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    <title>Transport Research International Documentation (TRID)</title>
    <link>https://trid.trb.org/</link>
    <atom:link href="https://trid.trb.org/Record/RSS?s=PHNlYXJjaD48cGFyYW1zPjxwYXJhbSBuYW1lPSJkYXRlaW4iIHZhbHVlPSJhbGwiIC8+PHBhcmFtIG5hbWU9InN1YmplY3Rsb2dpYyIgdmFsdWU9Im9yIiAvPjxwYXJhbSBuYW1lPSJ0ZXJtc2xvZ2ljIiB2YWx1ZT0ib3IiIC8+PHBhcmFtIG5hbWU9ImxvY2F0aW9uIiB2YWx1ZT0iMCIgLz48L3BhcmFtcz48ZmlsdGVycz48ZmlsdGVyIGZpZWxkPSJpbmRleHRlcm1zIiB2YWx1ZT0iJnF1b3Q7V2V0dGluZyBhbmQgZHJ5aW5nIHRlc3RzJnF1b3Q7IiBvcmlnaW5hbF92YWx1ZT0iJnF1b3Q7V2V0dGluZyBhbmQgZHJ5aW5nIHRlc3RzJnF1b3Q7IiAvPjwvZmlsdGVycz48cmFuZ2VzIC8+PHNvcnRzPjxzb3J0IGZpZWxkPSJwdWJsaXNoZWQiIG9yZGVyPSJkZXNjIiAvPjwvc29ydHM+PHBlcnNpc3RzPjxwZXJzaXN0IG5hbWU9InJhbmdldHlwZSIgdmFsdWU9InB1Ymxpc2hlZGRhdGUiIC8+PC9wZXJzaXN0cz48L3NlYXJjaD4=" rel="self" type="application/rss+xml" />
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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
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    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
    <image>
      <title>Transport Research International Documentation (TRID)</title>
      <url>https://trid.trb.org/Images/PageHeader-wTitle.jpg</url>
      <link>https://trid.trb.org/</link>
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    <item>
      <title>Long-term Hydro-mechanical Behavior and Equilibrium Characteristics of Compacted Soils in Highway Subgrades Under Wetting-drying Cycles</title>
      <link>https://trid.trb.org/View/2690969</link>
      <description><![CDATA[The long-term moisture-density evolution of compacted soil was investigated through field investigations and laboratory experiments. Field investigations were conducted on multiple highway subgrades with service lives up to 20 years. Comparison with construction-stage data revealed a progressive increase in moisture content accompanied by a reduction in compaction degree, indicating long-term degradation of the compacted soil structure. Representative soil from a strong monsoonal region with pronounced capillary rise was selected for laboratory testing. Unsaturated triaxial tests were conducted to examine the hydromechanical response of the soil under controlled wetting-drying cycles involving variations in matric suction. The results demonstrated a linear relationship between moisture content and degree of compaction. Repeated wetting-drying cycles weakened the soil-water retention behavior, induced cumulative volumetric expansion, and reduced the moisture-holding capacity of the soil. To characterize the stabilized state of soil subjected to long-term wetting-drying cycles, the concepts of equilibrium moisture content (15.0%-19.6%) and equilibrium degree of compaction (95.3%-92.1%) were proposed. A critical compression-expansion line was established to distinguish between cumulative swelling and shrinkage behavior.]]></description>
      <pubDate>Mon, 27 Apr 2026 14:58:14 GMT</pubDate>
      <guid>https://trid.trb.org/View/2690969</guid>
    </item>
    <item>
      <title>Insights into the Influence of Environmental Stressors on Expansive Subgrades Stabilized with Different Calcium-Based Stabilizers for Resilient Transportation Infrastructure</title>
      <link>https://trid.trb.org/View/2681411</link>
      <description><![CDATA[Although chemical stabilization is well practiced in dealing with expansive soils, these soils’ endurance to extreme weather events is still questionable because of potential alterations in microstructure and degradation of stabilization products. This study, therefore, investigates how moisture and temperature variations affect the structure and engineering behavior of chemically stabilized expansive clay. A series of unconfined compressive strength tests were conducted before and after freezing–thawing (FT) and wetting–drying (WD) conditioning on high-plasticity clay stabilized with cement or hydrated lime, with lime sludge as a co-additive. Cement treatment resulted in a higher initial strength (3.1 MPa) compared with hydrated lime treatment (1.3 MPa), primarily as a result of the rapid formation of binding gels through cement hydration. However, environmental conditioning and post-conditioning testing protocols significantly affected the void ratio and saturation levels of specimens, yielding different strength values for both cement and lime treatments. Cement-treated specimens experienced a strength reduction under both FT and WD conditions, with a more pronounced decrease after WD. However, lime-treated specimens exhibited an interesting trend of getting weakened after FT but becoming stronger after WD. These differences are mainly attributed to variations in the evolution of void ratio and saturation levels during the respective conditioning and post-conditioning phases. To further confirm these links, data from the experiments was fed into a random forest regression model to identify key factors influencing the engineering performance. Sensitivity analysis showed the degree of saturation (0.53) to be marginally more influential than the void ratio (0.47) in determining the strength, aligning with the experimental findings.]]></description>
      <pubDate>Fri, 20 Mar 2026 08:38:25 GMT</pubDate>
      <guid>https://trid.trb.org/View/2681411</guid>
    </item>
    <item>
      <title>Chloride transport in estuarine ship-lock concrete structure exposed to a unique seawater corrosive environment with low chlorine-salt concentrations and high-frequency drying‒wetting cycles: Experimental study and computational model</title>
      <link>https://trid.trb.org/View/2652441</link>
      <description><![CDATA[Estuarine ship-locks are the navigational structures closest to the sea, which can form a unique seawater corrosive environment characterized by low chlorine-salt concentrations and high-frequency drying‒wetting cycles. Such an environment is caused by the downstream saltwater tides infiltrating into the ship-lock chamber and coupled with the filling and drainage water processes during the ship-lock operation. This unique seawater corrosive environment can seriously threaten the durability of estuarine ship-locks concrete structures. Currently, the chloride transport mechanisms in concrete for estuarine ship-locks under such a unique seawater corrosive environment remain elusive. Particularly, the transport characteristics of chloride invasion into estuarine ship-lock concrete structures, driven by drying-wetting cycle environmental factors, necessitate further study. This paper investigates the effects of drying‒wetting cycle environmental factors of the unique seawater corrosive environment, including the environmental chloride salt concentration, the drying‒wetting frequency, and the drying‒wetting ratio, on the chloride transport in estuarine ship-lock concrete structure by carrying out a physical experimental study. Results indicated an "M"-shaped trend in chloride concentration, surface chloride concentration, and chloride diffusion coefficient of concrete with an increasing drying-wetting ratio. Additionally, the aforementioned chloride transport parameters exhibited a positive correlation with the increase of drying-wetting frequency and environmental chlorine-salt concentration. Notably, the environmental chlorine-salt concentration had the greatest influence on chloride transport, whereas the high-frequency drying-wetting cycles can diminish the promotion degree of environmental chlorine-salt concentration on chloride transport behaviors in concrete. Furthermore, the time-varying patterns of surface chloride concentration and apparent chloride diffusion coefficient in the estuarine ship-lock concrete structures, subjected to different drying-wetting ratios under low chlorine-salt concentrations and high-frequency drying‒wetting cycles, were quantified, and the mathematical relationship between the drying-wetting ratios and ship-lock structural elevation was derived. On the basis of Fick's second law, a computational model of chloride transport in estuarine ship-lock concrete structure was developed, incorporating the influence of structural elevation, i.e., drying-wetting ratios.]]></description>
      <pubDate>Mon, 02 Mar 2026 08:55:13 GMT</pubDate>
      <guid>https://trid.trb.org/View/2652441</guid>
    </item>
    <item>
      <title>The incorporation of the plastic-coated aggregates into a South African asphalt mixture</title>
      <link>https://trid.trb.org/View/2618010</link>
      <description><![CDATA[The use of plastic waste in asphalt pavements has been studied internationally. However, only a limited number of studies have been conducted in South Africa that focus on non-recycled plastic waste. This article focuses on the incorporation of LDPE (Low-Density Polythene) plastic waste into South African asphalt mixes via the ‘dry’ modification method. The purpose was to evaluate the effect of LDPE plastic waste on the volumetric and performance properties of an asphalt mixture at optimum bitumen content. Contrary to other research findings, the added LDPE plastic waste did not act as a binder replacement because the bitumen content at the optimum binder content of the asphalt mix remained unchanged after plastic waste addition. Instead, the plastic waste introduced an additional binding effect between the aggregates. The asphalt mix with plastic-coated aggregates (PCA) showed improved resistance to rutting, in line with the improved asphalt stiffness and elasticity at elevated temperatures.]]></description>
      <pubDate>Mon, 09 Feb 2026 13:55:11 GMT</pubDate>
      <guid>https://trid.trb.org/View/2618010</guid>
    </item>
    <item>
      <title>Durability and crack resistance of clayey soils treated with soybean induced carbonate precipitation under cyclic wetting–drying conditions</title>
      <link>https://trid.trb.org/View/2630952</link>
      <description><![CDATA[Desiccation cracking can easily occur in clay soils and lead to engineering accidents such as slope failure, pavement failure, and loss of bearing capacities. Soybean-urease induced carbonate precipitation (SICP) has emerged as an effective, low-cost and environmentally-friendly technique that can potentially enhance the properties of clayey soils and inhibit the formation of desiccation cracks. In this study, we investigated the cementation effects and crack resistance of SICP technology on clayey soils under cyclic wetting–drying conditions. First, the crack resistances of clayey soils treated with deionized water, soybean urease, cementation solution, and SICP reaction solution was evaluated. Then, SICP-treated samples with different cementation levels were prepared and underwent cyclic wetting–drying tests. During multiple wetting–drying cycles, the cracking resistances and moisture retention capacities of the samples were characterized. The SICP-treated sample exhibited optimal crack resistance with a surface crack ratio of 1.17 % after drying for 72 h, which is approximately ten times lower than that of the control sample treated with deionized water. Cyclic wetting–drying tests validate that SICP-treated samples exhibited optimal crack resistance, with a surface crack ratio lower than 4 % after four wetting–drying cycles when using the optimal reaction solution containing 80 g/L soybean urease and 2.0 mol/L cementation solution. These results indicate that SICP technology can effectively enhance the cracking resistance of clayey soils. Furthermore, the mechanism of the SICP technique on desiccation crack mitigation was discussed.]]></description>
      <pubDate>Tue, 20 Jan 2026 09:09:10 GMT</pubDate>
      <guid>https://trid.trb.org/View/2630952</guid>
    </item>
    <item>
      <title>Micro-to-Macro Insights into Durability of Stabilized Soils Exposed to Wetting-Drying Cycles  </title>
      <link>https://trid.trb.org/View/2646953</link>
      <description><![CDATA[Roads built on problematic soils like expansive and soft clays often fail prematurely due to issues like heaving, cracking, and rutting. Low-strength, high-compressibility, and moisture sensitivity of these soils, primarily driven by the reactive nature of clay minerals, are the underlying causes for this. Stabilizing such problematic soils with cementitious binders is a common practice. Soils are often subjected to severe Wetting-Drying (W-D) cycles due to extreme weather events like flooding during monsoons and heat waves during summers and the long-term durability of stabilized soils under these stresses remains a critical concern. Often, failure in the system due to these W-D cycles is progressive in nature, starting from the generation of micro-cracks that eventually propagate into fully developed fractures within the soil mass. Also, the pore structure and pore connectivity alter significantly during this process, and manifest into the overall strength and performance deterioration. The evolution of the pore network, number of cracks, and their morphological features, like the length, width, and connectivity, are extremely important to understand the longevity and durability of stabilized soils to ensure safety of the transportation infrastructure. With this objective, this project aims to investigate the micro-to-macro scale damage progression in stabilized soils subjected to the W-D durability cycles. The study will be conducted on soft soil (low-plasticity clay) with two different stabilizers, namely Portland limestone cement and lime. Modification to the workability and strength characteristics of the stabilized soils will be quantified through laboratory tests, including Atterberg limits, Proctor compaction, and Unconfined Compressive Strength (UCS) tests, and the optimum dosages of the stabilizers will be determined. Durability assessment of the stabilized soils with optimum dosages will be evaluated for 0, 2, 4, 8, and 12 W-D cycles following the ASTM D559 & AASHTO T135 testing protocols with different specimen sizes. Mass loss, volumetric strain, and UCS values post-durability cycles will be recorded from different specimen sizes and compared to evaluate the effects of specimen size on the durability evaluation. This data will be beneficial for simplifying and advancing the durability testing protocols. Additionally, advanced X-ray micro-Computed Tomography (μCT) will be used to visualize and quantify internal microstructural changes, such as pore connectivity and crack morphology evolution, in miniature soil specimens. Image analysis algorithms may be developed for the robust and accurate quantification of the microstructure. Finally, correlations will be developed between the total porosity, number of cracks, crack length, crack width, and the UCS values of soil for various durability cycles. These correlations are expected to aid in the realistic prediction of the long-term performance of stabilized soils. Micro-perspectives and insights from this project will be crucial for developing more resistant and durabletransportation infrastructure in regions with problematic soils.]]></description>
      <pubDate>Mon, 12 Jan 2026 15:59:58 GMT</pubDate>
      <guid>https://trid.trb.org/View/2646953</guid>
    </item>
    <item>
      <title>Durability Evaluation and Life Prediction of Desert Sand Grouting Material for Semi - flexible Pavements under Sulfate Dry - Wet Cycles Based on Entropy Weight Method and Grey Theory</title>
      <link>https://trid.trb.org/View/2636230</link>
      <description><![CDATA[The application of desert sand in building materials has witnessed certain advancements. However, regarding its utilization in semi - flexible pavement grouting materials within sulfate - eroded environments, the existing comprehensive durability evaluation criteria and life - prediction methods suffer from the limitation of considering only single factors. In this study, semi - flexible pavement desert - sand grouting materials (DSGM) were prepared by substituting river sand with desert sand (DS) at dosages of 0%, 15%, and 30%. The systematic investigation was carried out to explore the impacts of DS content and the number of sulfate dry - wet cycles (DWCs) on the durability of DSGM. Based on the entropy - weight method and the GM(1, 1) model, a comprehensive durability evaluation criterion and a life - prediction model were established, taking into account the variations in mass, compressive strength, and flexural strength. The results of the sulfate DWCs tests indicated that DS enhanced the compactness of the materials by optimizing the interface between aggregates and the paste and filling pores. In the initial stage of sulfate erosion, the expansion products such as ettringite and gypsum increased the density of the matrix in the short term. Nevertheless, with the continuous accumulation of erosion products, the pore network became interconnected, eventually leading to a trend where both the mass loss rate and the compressive - strength loss rate of DSGM first decreased and then increased. After determining the weights of compressive strength, flexural strength, and mass using the entropy - weight method, a comprehensive evaluation criterion centered around the durability value was proposed. This criterion can comprehensively account for the influences of various factors on durability. Furthermore, by introducing the GM(1, 1) model, a life - prediction model was developed, which can accurately predict the attenuation pattern of the durability value of DSGM under different erosion cycles. The findings of this study can provide theoretical support for the engineering applications and durability research of DSGM in sulfate - eroded environments in desert regions.]]></description>
      <pubDate>Tue, 30 Dec 2025 09:46:13 GMT</pubDate>
      <guid>https://trid.trb.org/View/2636230</guid>
    </item>
    <item>
      <title>Modeling cumulative plastic deformation and critical dynamic stress of red-bed interbedded rock filler under coupled wetting–drying and cyclic loading: Experimental and theoretical study</title>
      <link>https://trid.trb.org/View/2614630</link>
      <description><![CDATA[The long-term performance of highway subgrade constructed with red-bed interbedded rock filler (RBIRF) is strongly affected by its deformation stability under cyclic loading and wetting–drying conditions. To address the associated geotechnical risks, this study investigates the evolution characteristics of cumulative plastic deformation and the critical dynamic stress of RBIRF through a series of wetting–drying cycles and large-scale dynamic triaxial tests. The experimental program systematically examines the effects of wetting–drying cycles, confining pressure, and dynamic stress amplitude on the deformation behavior. The results reveal that repeated wetting–drying cycles significantly deteriorate inter-particle bonding, promote particle breakage, and induce structural loosening, leading to reduced resistance against cyclic deformation. Increasing confining pressure enhances particle interlocking and suppresses deformation, whereas dynamic stress amplitude governs the overall stability, exhibiting a distinct threshold effect. To quantitatively capture the deformation behavior under coupled environmental and mechanical actions, a power-function-based cumulative plastic strain prediction model is established, incorporating a working-condition correction coefficient to improve its adaptability. Furthermore, a critical dynamic stress prediction model is developed based on the shakedown theory of deformation stability, enabling the identification of the stress threshold between stable and unstable states. The predicted critical dynamic stress values show good agreement with experimental data, with deviations within 5.0%. The proposed models effectively characterize the mechanical response of RBIRF under realistic field conditions and provide a theoretical foundation for evaluating dynamic stability and guiding the design of subgrade structures in red-bed regions.]]></description>
      <pubDate>Mon, 22 Dec 2025 09:53:22 GMT</pubDate>
      <guid>https://trid.trb.org/View/2614630</guid>
    </item>
    <item>
      <title>Enhancing the Durability of Cement-Stabilized Clayey Sand with Zeolite and PVA Fibers Under Wet–Dry and Freeze–Thaw Cycles</title>
      <link>https://trid.trb.org/View/2563791</link>
      <description><![CDATA[In this study, the role of zeolite and polyvinyl alcohol (PVA) fibers on the durability of cement-stabilized clayey sand soil under freeze–thaw and wet–dry cycles was investigated. Laboratory tests, including unconfined compressive strength (UCS), scanning electron microscope (SEM), and ultrasonic pulse velocity (UPV), were performed to evaluate the effect of zeolite replacement ratio and fiber content on the durability and mechanical characteristics of the stabilized soil. The results showed that the mechanical properties of cemented samples decreased significantly under wet–dry cycles compared to freeze–thaw cycles. The optimal zeolite replacement ratio to achieve the most appropriate durability behavior of cement-treated clayey sand was 20%. Compared to the unreinforced samples, the samples with 0.8% fibers showed a lower reduction in UCS and mass loss under wet–dry and freeze–thaw cycles. The reduction in UCS was limited to 13% and 15%, respectively. The mass loss was limited to 5.2%, which indicates the positive effect of fibers in improving the durability of soil. Samples containing zeolite and fibers had lower mass loss in wet–dry and freeze–thaw conditions than samples without zeolite and fibers. Finally, the SEM microstructural observations justified the results of the durability tests.]]></description>
      <pubDate>Fri, 21 Nov 2025 08:44:20 GMT</pubDate>
      <guid>https://trid.trb.org/View/2563791</guid>
    </item>
    <item>
      <title>Macro-meso mechanical behavior and degradation mechanisms of silty clay subgrade subjected to coupled traffic loading and dry-wet cycles</title>
      <link>https://trid.trb.org/View/2601819</link>
      <description><![CDATA[Existing studies on subgrade soil degradation predominantly isolate traffic loading or dry-wet cycles, neglecting their synergistic impacts and leaving microscale mechanisms underlying macroscale weakening poorly quantified. This study addresses these gaps through a multiscale investigation of silty clay subgrades under coupled traffic loading and cyclic hydration-dehydration using direct shear tests, dynamic triaxial tests, and advanced imaging techniques (computed tomography [CT], scanning electron microscopy [SEM], and mercury intrusion porosimetry [MIP]). Key findings reveal biphasic strength degradation: cohesion (c) decreases by 13.02–21.68 % after five cycles, stabilizing after the second cycle, while the internal friction angle (φ) maintains 89.49 % of the initial capacity. Dynamic resilience modulus (MR) decreases by 33 % during the initial cycles, with cumulative strains reaching 12.16 % under low confinement (20 kPa) and high moisture (22 %). CT quantification identifies macropores (>100 μm) as dominant (99.95 % porosity), driven by micropores coalescence, linearly correlating with axial strain (0.27 % per 1 % porosity increase at 20 kPa. A refined hyperbolic model, distinct from standard formulations by incorporating moisture-dependent decay parameters (a, b) that capture cyclic hydration effects, accurately predicts strain stabilization (R² > 0.96), validated against experimental data. These results establish explicit linkages between pore network dynamics and mechanical degradation, offering a paradigm shift from isolated to coupled conditioning frameworks and providing practical implications for designing climate-resilient subgrades.]]></description>
      <pubDate>Tue, 11 Nov 2025 09:23:09 GMT</pubDate>
      <guid>https://trid.trb.org/View/2601819</guid>
    </item>
    <item>
      <title>Comprehensive Analysis of Adherence in Stone Pavements</title>
      <link>https://trid.trb.org/View/2571304</link>
      <description><![CDATA[This study aims to establish a reliable method for analyzing adherence on stone road pavements. Field tests were conducted under dry and wet conditions on various natural stones, including porphyry, and basalt. The adherence was tested in different orientations (0°, 90°, 180°, and 270°), demonstrating a substantial invariability concerning the test direction for all materials tested. This allowed for the validation of the testing methodology prescribed in UNI EN 13036-4 for stone pavements. The adherence of stone pavements is influenced not only by the stone elements but also by the joints. The comparative analysis included tests on old and refurbished pavements, showing few significant differences in adherence characteristics. Furthermore, the properties of polyurethane resin joints were examined, including laboratory tests. These investigations revealed that an augmented resin presence on the surface of aggregates tends to reduce adherence. In conclusion, this study provides a detailed analysis of the adherence of stone pavements, taking into consideration various factors such as the type of stone, surface conditions (dry or wet), testing direction, and the contribution of joints. This information is crucial for the design and maintenance of stone road pavements.]]></description>
      <pubDate>Mon, 08 Sep 2025 14:53:19 GMT</pubDate>
      <guid>https://trid.trb.org/View/2571304</guid>
    </item>
    <item>
      <title>Appraising the Synergistic Use of Nano Fly Ash and Cold Bituminous Emulsion Mixes</title>
      <link>https://trid.trb.org/View/2562243</link>
      <description><![CDATA[Cold Bituminous Emulsion Mix (CBEM) is advantageous in terms of lesser energy consumption and lower greenhouse gas emissions than hot mix asphalt, but it suffers from poor mechanical performance. This study incorporates Nano Fly Ash (NFA) with bitumen emulsion to evaluate its influence on the strength of CBEM. The research focuses on assessing volumetric characteristics, along with stability under both wet and dry conditions, as key performance indicators within the Marshall mix design framework. NFA was added at varying dosages of 0% (control sample), 1%, 2%, and 3% by weight of residual bitumen content (RBC) using a high-shear mixer at 4,000 RPM to prepare CBEM. Results show that up to 3% NFA improves both dry and wet stability. The findings advocate for the adoption of NFA in CBEM formulations, paving the way for more resilient and environmentally friendly pavement solutions.]]></description>
      <pubDate>Thu, 21 Aug 2025 09:19:23 GMT</pubDate>
      <guid>https://trid.trb.org/View/2562243</guid>
    </item>
    <item>
      <title>Soybean urease intensified magnesia carbonation for soil solidification: Strength and durability under drying-wetting and soaking conditions</title>
      <link>https://trid.trb.org/View/2564493</link>
      <description><![CDATA[Magnesia carbonation can be adopted as a soil solidification technology for geotechnical engineering. Recent studies have shown that urea decomposition under the catalyzation of ureolytic bacteria can provide a carbon source for magnesia carbonation. Although many related studies have been reported, the mechanical behaviour of the magnesia solidified soil, especially its durability and long-term performance, still require further deep investigations. Besides, the use of plant urease instead of bacteria for magnesia carbonation is also of research interest and requires further studies. In this study, we used crude soybean urease for the catalyzation of urea decomposition in order to provide carbon source for magnesia carbonation (soybean urease intensified magnesia carbonation, SIMC). The mechanical behaviour and durability of SIMC solidified soil under drying-wetting and soaking conditions in acid rain solution were investigated. For SIMC samples, the addition of urea and urease as internal carbon sources led to a much higher strength compared with those without them. The optimum urea concentration was 2 mol/L, and higher concentrations could have negative impact on the strength. As for magnesia, the highest strengths were obtained when the addition was 8 %. During the drying-wetting cycles and soaking tests with acid rain water, there was a generally moderate decreasing trend in strength for the SIMC samples with more drying-wetting cycles or soaking durations. However, the strength reduction ratio, which was defined as the long-term strength in acid environment to that in neutral environment, was much higher compared to the PC samples, implying a much stronger resistance to acid rain water. The mineralogical analysis revealed that hydrated magnesium carbonates were the major effective cementing materials.]]></description>
      <pubDate>Wed, 16 Jul 2025 19:47:46 GMT</pubDate>
      <guid>https://trid.trb.org/View/2564493</guid>
    </item>
    <item>
      <title>Novel Test to Assess Moisture-Induced Durability of Stabilized Soils Under Cyclic Loading</title>
      <link>https://trid.trb.org/View/2567049</link>
      <description><![CDATA[This study presents a new experimental procedure for evaluating the durability of stabilized soils subjected to multiple wetting and drying (W-D) cycles. An integrated experimental program combining dynamic shear rheometer (DSR) testing with W-D cycles was designed and implemented to assess moisture-induced performance degradation in natural sand stabilized with two types of rapid-setting cementitious stabilizers. Small cylindrical specimens (10.5?mm in diameter and 35.0?mm in height) of stabilized sand mixes were compacted, cured, and subjected to up to seven W-D cycles. Each W-D cycle was meticulously controlled to gauge its impact on the material’s durability. The mechanical properties of the stabilized samples were evaluated at different stages of the W-D cycles using the strain-sweep DSR testing based on a methodology developed from preliminary work. The proposed test method focuses on the shear properties of the material, measuring its mechanical response under the torsional loading of a cylindrical sample and providing dynamic mechanical properties and fatigue-resistance characteristics of the stabilized soils under cyclic loading. Test results demonstrate water-induced deterioration of stiffness and reduced resistance to cyclic loading with good testing repeatability, efficiency, and material-specific sensitivity. By combining dynamic mechanical characterization with durability assessment, the new testing method provides a high potential as a simple, scientific, and efficient method for assessing, engineering, and developing stabilized soils, which will enable more resilient transportation infrastructure systems.]]></description>
      <pubDate>Mon, 23 Jun 2025 08:44:37 GMT</pubDate>
      <guid>https://trid.trb.org/View/2567049</guid>
    </item>
    <item>
      <title>Moisture Protection for Concrete</title>
      <link>https://trid.trb.org/View/2543334</link>
      <description><![CDATA[Tests to identify effective waterproofing materials for hardened concrete are described. Test results and limited cost data are given. Wetting-drying tests were made to measure the percentage weight of water infiltrating through treated surfaces of concrete partially submerged in tap water. Freeze-thaw tests were made of sealed concrete surfaces ponded with brine. Eighteen surface treatments were tested; they included linseed oil, silicones, epoxies, and others. Percentage weight of water absorbed and number of freeze-thaw cycles are tabulated. Moisture absorption curves and photographs of freeze-thaw specimens are included. Epoxies and linseed oil were the most effective of the treatments in these tests. On the basis of effectiveness, ease of application, and low cost, linseed oil appeared to be the best suited under the test condition.]]></description>
      <pubDate>Wed, 21 May 2025 14:12:18 GMT</pubDate>
      <guid>https://trid.trb.org/View/2543334</guid>
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