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    <title>Transport Research International Documentation (TRID)</title>
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    <atom:link href="https://trid.trb.org/Record/RSS?s=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" rel="self" type="application/rss+xml" />
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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
    <docs>http://blogs.law.harvard.edu/tech/rss</docs>
    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
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      <title>Transport Research International Documentation (TRID)</title>
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      <link>https://trid.trb.org/</link>
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    <item>
      <title>Mechanical properties of concrete reinforced with reused tyre steel fibres</title>
      <link>https://trid.trb.org/View/2677774</link>
      <description><![CDATA[This study presents a design-oriented experimental investigation on the use of reused tyre steel fibres (RTSF) as structural reinforcement in fibre-reinforced concrete, addressing both mechanical performance and environmental considerations. Two RTSF types with nominal lengths of 20 mm (FX-20) and 25 mm (FX-25) were evaluated at dosages of 15, 30 and 45 kg/m³ in three concrete mixes representative of common structural applications: precast segment lining, concrete pavements and sprayed concrete. The experimental programme included fresh-state characterisation (workability), hardened-state properties (compressive strength and residual flexural strength), and non-destructive assessment of fibre content and orientation using an inductive method. Residual flexural strengths obtained from notched beam and Barcelona tests were subsequently translated into constitutive stress-crack width and stress-strain relationships compatible with the fib Model Code 2020 and the forthcoming Eurocode 2 Annex L. The results show that FX-20 fibres provide a more robust contribution to compressive strength and cracking resistance, while FX-25 fibres enhance post-cracking behaviour and crack control due to their greater anchorage capacity. Inductive measurements revealed that effective fibre content, dispersion and orientation jointly govern the variability of residual strengths, supporting their use as complementary parameters for interpreting mechanical performance. Design-oriented verification examples demonstrated the direct applicability of the calibrated constitutive laws to typical structural elements. Finally, the environmental performance of RTSF was quantified using Environmental Product Declarations (EPDs) and benchmarked against industrial steel fibre EPDs, showing a substantially lower cradle-to-gate global warming potential for the recycled fibres. Overall, the study demonstrates that RTSF can be effectively used as structural reinforcement within current design frameworks, offering a technically sound and environmentally favourable alternative to conventional steel fibres.]]></description>
      <pubDate>Wed, 17 Jun 2026 12:23:22 GMT</pubDate>
      <guid>https://trid.trb.org/View/2677774</guid>
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    <item>
      <title>Comparative structural behavior of full precast UHPC columns with recycled and manufactured steel fibers</title>
      <link>https://trid.trb.org/View/2674542</link>
      <description><![CDATA[Ultra-high performance concrete (UHPC) has gained popularity in bridge construction due to its superior mechanical properties. However, the large-scale adoption of UHPC faces obstacles, including the high material costs associated with essential components like steel fibers. This study builds upon and extends emerging economic UHPC mixtures that utilize local and sustainable materials. It explores, for the first time, a significant large-scale application of recycled steel wires and fibers sourced from tires as they are integrated into full structural precast UHPC applications. The objective is to evaluate and compare the structural performance of eco-UHPC full precast bridge columns featuring both recycled steel fibers (RSF) and manufactured steel fibers (MSF). Two sets of identical 1/3-scale columns, designed with pocket or duct connections, were cast in an industrial precast plant and assembled with reinforced concrete (RC) footings before being tested under combined axial and cyclic loading. Overall results indicate that UHPC RSF columns achieve the desired drift capacity and ductility, highlighting RSF from recycled tires as a promising application for UHPC columns. The RSF UHPC columns compare reasonably well to the high-end columns with MSF in terms of mechanical characteristics, providing preliminary support for the feasibility of using RSF in structural UHPC applications.]]></description>
      <pubDate>Wed, 17 Jun 2026 12:23:21 GMT</pubDate>
      <guid>https://trid.trb.org/View/2674542</guid>
    </item>
    <item>
      <title>Structural behaviour of reinforced rubberised concrete beam with waste tyre steel fibres</title>
      <link>https://trid.trb.org/View/2661860</link>
      <description><![CDATA[This study evaluates a novel high-performance rubberised concrete (RuC) system incorporating sustainable waste materials. In the concrete mix design, 63 % cement was replaced by supplementary cementitious materials (SCMs), specifically a blend of 36 % Ground-Granulated Blast Furnace Slag (GGBS) and 27 % Fly Ash (FA), and the fine natural sand was replaced by waste tyre rubber (WTR) particles at 10 % volume fraction. The RuC material matrix ultimately developed a 28-day compressive strength of 86.4 MPa. The mix was further reinforced by waste tyre steel fibres (WTSF) at 1 %-3 % volume fraction. WTSF addition significantly improved post-cracking tensile behaviour, with 3 % WTSF enhancing flexural strength by 32 %. Structural testing of reinforced RuC beams demonstrated the synergistic combination of conventional steel rebars plus WTSF improved the ultimate loading capacity. Reinforced RuC beams supplemented with 1 % WTSF exhibited 7 % higher load capacity, while 2 % WTSF addition further increased this capacity by 17 % compared to reinforced RuC specimens with no fibre addition. The optimised hybrid system (RuC mixture + WTSF + steel rebar) ultimately supported approximately 20 % greater loads than reinforced control concrete beam. The economic assessment validates the viability of this sustainable approach, demonstrating that incorporating WTSF reduces material costs while significantly lowering environmental impact. By replacing 63 % of Portland cement with SCMs, the resulting mixture achieves a notable reduction in cost per megapascal and carbon emissions. The research validates RuC as a technically viable and environmentally sustainable alternative for structural applications, balancing mechanical performance, ductility, and eco-efficiency through intelligent waste material utilisation.]]></description>
      <pubDate>Thu, 30 Apr 2026 09:11:06 GMT</pubDate>
      <guid>https://trid.trb.org/View/2661860</guid>
    </item>
    <item>
      <title>Synergistic Effects of Manufactured and Recycled Steel Fibers in Paving Concrete Mixtures</title>
      <link>https://trid.trb.org/View/2628339</link>
      <description><![CDATA[The cracking issues in concrete pavements caused by shrinkage, vehicular loading, and other factors can be mitigated by using steel fibers. However, the high cost and environmental impact of manufactured steel fibers (MSFs) necessitate alternative solutions. This study explores recycled steel fibers (RSFs) from waste tires as a sustainable alternative. The combined use of RSFs and MSFs, referred to as hybrid steel fibers (HSFs) in this study, is also explored. RSFs offer economic and environmental benefits, significantly improving the mechanical properties and durability of concrete. Testing reveals that flexural strength improves by around 36, 20, and 30%, and tensile strength by 53, 23, and 39% with MSFs, RSFs, and HSFs, respectively. Additionally, MSFs reduced the drying shrinkage by around 14%, RSFs by 10%, and HSFs by 18%. Incorporating MSF, RSF, and HSF enhances fracture resistance, improving ductility and crack-bridging effects compared to normal paving concrete. Key fracture properties indicate that HSF provides the best crack control and energy absorption capacity, followed by MSF and RSF.]]></description>
      <pubDate>Tue, 17 Mar 2026 09:48:46 GMT</pubDate>
      <guid>https://trid.trb.org/View/2628339</guid>
    </item>
    <item>
      <title>Investigation into the deicing efficiency and self-healing capability of asphalt mixtures with aluminum dross powder and steel fiber</title>
      <link>https://trid.trb.org/View/2633389</link>
      <description><![CDATA[In winter, reduced friction between tires and icy roads increases accident risks. This study designs an asphalt mixture incorporating conductive waste materials aluminium dross powder (ADP) and steel fibre (SF) to accelerate ice removal. Under simulated −20 °C conditions, microwave heating is applied for 120 seconds to evaluate deicing efficiency. The results show that higher ADP and SF content increases the average surface temperature (AST) and ice-melting speed (IMS). The highest AST increased by 112.86%, while IMS improved by 73.6% compared to the reference sample. A linear relationship (𝑅² = 0.91) is observed between ADP-SF content and microwave heating efficiency. For the Self-healing (SH) effect, an indirect tensile test (IDT) is performed before and after damage. Strength values and moisture susceptibility are also determined. Accordingly, higher ADP and SF content during 60 seconds of microwave heating enhanced healing, but after 120 seconds, increased SF content reduces healing effectiveness.]]></description>
      <pubDate>Tue, 10 Mar 2026 09:56:53 GMT</pubDate>
      <guid>https://trid.trb.org/View/2633389</guid>
    </item>
    <item>
      <title>Study on the Preparation and Mechanical Properties of Ultra-Early Strength Ultra-High-Performance Concrete (UES-UHPC)</title>
      <link>https://trid.trb.org/View/2672681</link>
      <description><![CDATA[To address the low early-age strength of ultra-high-performance concrete (UHPC) under standard curing, this study develops an ultra-early-strength (UES)-UHPC. The cementitious materials system of the proposed UES-UHPC is a composite of sulfoaluminate cement (SAC) and ordinary Portland cement (OPC). Calcium oxide (CaO) is incorporated to boost early-age strength. The chemical admixtures primarily include an early-strength accelerator, a retarder, and an early-strength superplasticizer. To enhance the toughness of UES-UHPC, steel fibers (SF) were incorporated. X-ray diffraction (XRD) and scanning electron microscopy (SEM) are used to characterize hydration products and microstructures. The acoustic emission (AE) technique is applied during early-age flexural tests to track internal damage evolution. In addition, the flowability of the fresh UES-UHPC mixture and the mechanical properties of UES-UHPC were measured. This study focuses on the synergistic toughening and ultra-early-age compressive-strength enhancement afforded by the SAC–OPC–CaO–SF system. Results show that the proposed UES-UHPC achieves a compressive strength of up to 96 MPa at 2 h and 179 MPa at 28 days. The system rapidly forms an ettringite (AFt) and calcium–alumino–silicate–hydrate (C–A–S–H) skeleton together with a densified interfacial transition zone (ITZ), which in turn enables SF to bridge cracks effectively. Consequently, under ambient curing the system concurrently delivers ultra-early-age strength and high toughness. Moreover, a higher SF content leads to a larger proportion of shear-dominated cracks, especially near failure.]]></description>
      <pubDate>Sun, 22 Feb 2026 14:57:19 GMT</pubDate>
      <guid>https://trid.trb.org/View/2672681</guid>
    </item>
    <item>
      <title>Enhancing deicing efficiency of electrically heated pavements with steel fiber-reinforced concrete and anti-icing coatings</title>
      <link>https://trid.trb.org/View/2643532</link>
      <description><![CDATA[Winter bridge deck icing poses a serious threat to driving safety, often leading to traffic accidents and economic losses. Efficient and low-energy deicing solutions are therefore essential. This study investigates the integration of steel fiber-reinforced concrete and anti-icing coatings in an electrically heated bridge deck system to enhance deicing performance. First, 2% steel fibers were incorporated into C50 concrete to improve mechanical strength and thermal conductivity, achieving a thermal conductivity coefficient of 2.45 W/(m·°C). Next, an emulsion asphalt coating containing 1% anti-icing agent was developed and evaluated for freezing point, electrical conductivity, adhesion, and ice detachment performance, demonstrating optimal deicing effectiveness while maintaining good adhesion to the substrate. Field experiments on electrically heated concrete panels measured surface temperature evolution and energy consumption. After 3 hours of heating, the surface temperature increased by approximately 10?°C, with a heating rate of 3.3 °C/h and uniform temperature distribution. Energy analysis showed that raising the temperature of a single panel by 1?°C required 0.22 kWh, while raising the temperature of 1 m² by 1?°C required only 0.085 kWh, highlighting the system’s energy efficiency. Although the heating rate is lower than that of conventional electrically heated pavements, the combination of steel fiber concrete and anti-icing coating provides a reliable, low-energy, and environmentally friendly deicing solution. These findings offer a scientific basis for the development of efficient, cost-effective, and sustainable bridge deck deicing technologies, contributing to improved winter traffic safety.]]></description>
      <pubDate>Mon, 02 Feb 2026 16:31:32 GMT</pubDate>
      <guid>https://trid.trb.org/View/2643532</guid>
    </item>
    <item>
      <title>Enhanced mechanical performance of high-early-strength concrete with basalt macro-fibre reinforcement for rapid repair and construction applications in airfield pavements</title>
      <link>https://trid.trb.org/View/2643788</link>
      <description><![CDATA[High-strength concrete (HSC) materials exhibit increased gains from steel fibre reinforcement, mainly due to HSC's inherent brittleness and high adhesion capacity, with steel fibres contributing to a notable increase in compressive strength. However, steel fibres may be unsuitable for applications, such as airfield pavements, due to their corrosion susceptibility. This study introduces fine basalt fibres with a high elastic modulus and diameters comparable to those of commonly used steel fibres. When assembled into macro-fibres using a polymer matrix, the lightweight and corrosion-resistant macro-fibres were experimentally shown to enhance the early-age compressive strength of high-early-strength concrete by up to 20% and increase flexural strength and toughness by approximately 25% and 30%, respectively. The study also demonstrated that pavements incorporating basalt macro-fibres could sustain C-17 aircraft gear loading, with materials achieving 75% of their ultimate flexural strength within 75 minutes of application, vital for rapid repair scenarios. Scanning Electron Microscopy (SEM) analyses clarified the interactions between basalt macro-fibres and ultra-rapid-hardening cementitious binders, revealing a strong bond and uniform distribution of hydration products that contribute to a 20% increase in interfacial toughness. These findings position basalt macro-fibres as a competitive and sustainable alternative to steel fibres for reinforcing HSC in infrastructure applications.]]></description>
      <pubDate>Mon, 26 Jan 2026 08:41:44 GMT</pubDate>
      <guid>https://trid.trb.org/View/2643788</guid>
    </item>
    <item>
      <title>Flexural performance of steel fiber reinforced MPCC beams: Experimental study and theoretical analysis</title>
      <link>https://trid.trb.org/View/2632262</link>
      <description><![CDATA[Magnesium phosphate cement (MPC) is characterized by its rapid hardening, which has great potential for use in the field of rapid bridge construction. The bending beam is one of the most important structural elements in bridge engineering, and the flexural performance is directly related to the safe use of the structures. To investigate the effects of the steel fiber (SF) volume ratio and the reinforcement ratio on the flexural performance of magnesium phosphate cement concrete (MPCC) beams, one normal concrete (NC) beam and seven MPCC beams were subjected to a four-point bending test, and the flexural performance were studied. In addition, based on the basic assumptions, the calculation methods for bending performance were proposed. The results indicated that the cracking load of the MPCC beams was significantly higher than that of the NC beam, whereas the ductility of the NC beam was greater than that of the MPCC beams. The ductility of the MPCC beams positively correlated with the SF volume ratio, whereas negatively correlated with the reinforcement ratio. The cracking, yielding, and ultimate loads are important nodes in the crack-width development. The proposed calculation theory exhibited high accuracy in predicting the bending performance of MPCC beams, the maximum error was within 10 %, and the maximum variation coefficient was 1.70, which can provide theoretical support for the application and design specification of MPCC beams.]]></description>
      <pubDate>Fri, 23 Jan 2026 09:58:48 GMT</pubDate>
      <guid>https://trid.trb.org/View/2632262</guid>
    </item>
    <item>
      <title>Inductive healing asphalt mixture incorporating waste steel shavings and waste ferrites for sustainable infrastructure</title>
      <link>https://trid.trb.org/View/2643598</link>
      <description><![CDATA[Incorporating conductive metals into asphalt mixtures enables inductive heating, enhancing their self-healing capability and supporting sustainable infrastructure. However, conventional inductive healing asphalt mixtures (IHAM) suffer from temperature gradient heating, leading to suboptimal healing in the lower part and reduced overall efficiency. To address this issue, this study proposes innovative approaches by adjusting the content and type of waste steel shavings (WSS) and steel wool fibers (SWF) in the lower part of IHAM, as well as developing magnetically conductive asphalt mixture (MCAM) to regulate the magnetic field distribution within IHAM. The high-temperature stability, low-temperature crack resistance, moisture susceptibility, and bending strength of the novel IHAM and MCAM are evaluated. Damage-healing-damage cyclic tests are conducted to quantitatively assess the healing efficiency and heating rate of all groups. Finally, a fuzzy comprehensive evaluation is performed to determine the optimal scheme, considering healing efficiency, mechanical performance, thermal response, and economic feasibility. Results show that using 6% SWF in both the upper and lower parts of IHAM, combined with MCAM, achieves the highest performance. Additionally, the combination of 6% WSS in the upper part and 8% SWF in the lower part is the best non-MCAM alternative, offering a cost-effective solution for real-world applications.]]></description>
      <pubDate>Thu, 15 Jan 2026 14:31:03 GMT</pubDate>
      <guid>https://trid.trb.org/View/2643598</guid>
    </item>
    <item>
      <title>Performance improvement of ecologically friendly ultra-high performance concrete with waste tire recycled steel fiber</title>
      <link>https://trid.trb.org/View/2605613</link>
      <description><![CDATA[Ecologically friendly ultra-high performance concrete (eco-friendly UHPC) is typically produced using recycled materials, which play a decisive role in the matrix performance. Enhancing the application of recycled materials is essential for the sustainable development of eco-friendly UHPC. In this study, a novel low-carbon eco-friendly UHPC was developed by incorporating 15 % rubber powder and 2 % recycled steel fibers (RSF). A series of macro- and micro-scale tests were conducted to evaluate the effects and synergistic behavior of RSF dosage, RSF length, and the mixing ratios of 0–10 mm to 20–30 mm fibers on mechanical performance. The results showed that both fiber length and dosage significantly affected the compressive strength. The optimal compressive performance was achieved at a fiber content of 2 %, with extra-short recycled steel fiber (ESRSF) providing the greatest enhancement. Flexural strength increased proportionally with fiber length and dosage, with extra-long recycled steel fiber (ELRSF) contributing the most to flexural capacity and energy absorption. Synergistic effects were observed in specimens reinforced with mixed ratios of ESRSF and ELRSF. The poorest synergy was found at a ratio of 60 % ESRSF to 40 % ELRSF, with a synergy value of –0.354. The optimal synergy occurred at 20 % ESRSF to 80 % ELRSF, with a value of 0.054. These findings offer valuable insights for optimizing RSF combinations in sustainable UHPC applications.]]></description>
      <pubDate>Fri, 21 Nov 2025 08:42:16 GMT</pubDate>
      <guid>https://trid.trb.org/View/2605613</guid>
    </item>
    <item>
      <title>Mechanical and Electromagnetic Induced Heating Self-Healing Properties of Asphalt Concrete with Hybrid Steel Fibers and Nano-CaCO₃</title>
      <link>https://trid.trb.org/View/2604219</link>
      <description><![CDATA[Steel fibers with excellent electrical and thermal conductivity can convert electricity into heat by cutting magnetic inductances and then transferring heat in asphalt concrete, reducing viscosity of asphalt binder and allowing it to expand/flow and then fill cracks under loads. However, steel fibers only perform well at high aspect ratio and dosage, thus adversely influencing the degree of compaction and cost of asphalt concrete. This study innovatively proposes hybrid using of nano-CaCO3 and steel fibers to develop asphalt concrete with both high self-healing index and mechanical properties, especially under the selected mixing method and heating system where the average temperature of the self-healing region were controlled around 70°C. The self-healing index based on low-temperature semicircle bending (SCB) peak load and fracture energy of asphalt concrete with 13-mm steel fibers were 29.2% and 47.8% higher than that of asphalt concrete with 6-mm steel fibers, and this was consistent with the former reducing heating rate of asphalt concrete by 69.3%. However, peak load and cracking load of asphalt concrete with 13-mm steel fibers before self-healing were 19.5% and 27.2% lower than that with 6-mm steel fibers because of loose structure. Incorporating 5.0% by volume nano-CaCO3 by high-speed shearing method enhanced the self-healing index of asphalt concrete with 6-mm steel fibers based on peak load and fracture energy by 13.9% and 26.4%, respectively. Nano-CaCO3 can be absorbed on the surface of steel fibers to improve heat transfer ability to asphalt binder, which had been verified by the 4.0% increase of thermal conductivity and reduction of heating rate of asphalt concrete. Meanwhile, incorporating nano-CaCO3 can strengthen the bridging effect of steel fibers and lead to 32% extension of crack development duration time. Furthermore, nano-CaCO3 in the matrix made asphalt binder morphology changes from smooth to flaky, and enabled the flow of asphalt binder more easily at high temperature. Therefore, the self-healing index gap between asphalt concrete with 6- and 13-mm steel fibers was reduced by 14.3%; meanwhile, the fracture energy for asphalt concrete with hybrid 6-mm steel fibers and 5.0% by volume nano-CaCO3 after self-healing was 41.4% higher than that of composites without nano-CaCO3.]]></description>
      <pubDate>Thu, 13 Nov 2025 09:28:15 GMT</pubDate>
      <guid>https://trid.trb.org/View/2604219</guid>
    </item>
    <item>
      <title>Mitigating Cracks in Concrete Members for Durable Bridge Construction</title>
      <link>https://trid.trb.org/View/2616820</link>
      <description><![CDATA[As a brittle material with low tensile capacity, concrete is prone to cracking under service-level loads. Typical approaches for improving concrete’s cracking resistance involve either increasing the compressive strength, which also leads to greater brittleness, or adding fibers, which controls crack widths but has little effect on the cracking strength. In this research, the primary objective was to enhance the fracture toughness of concrete by employing steel wool. Unlike conventional steel fibers, steel wool provides micro-scale reinforcement to the concrete matrix, which increases its tensile cracking strength under tension. Optimum volume fractions of steel wool in two different concretes were determined considering its effect on fracture toughness and modulus of rupture. Standard compressive strength tests were performed for flexure, and fracture toughness tests were performed at the material-scale specimens. The findings demonstrated remarkable improvements in flexural strength and fracture toughness when steel wool was incorporated, compared to reference specimens without steel wool.]]></description>
      <pubDate>Thu, 13 Nov 2025 09:07:57 GMT</pubDate>
      <guid>https://trid.trb.org/View/2616820</guid>
    </item>
    <item>
      <title>Enhancing Pavement Resilience: Self-Healing Bituminous Pavements Reinforced with Steel Fibers</title>
      <link>https://trid.trb.org/View/2601311</link>
      <description><![CDATA[This comprehensive research paper seeks to explore the potential benefits of incorporating steel fibers into bituminous pavements, which possess self-healing capabilities, aimed at enhancing pavement resilience. The study offers an in-depth analysis of the persistent challenges encountered by conventional bituminous pavements and highlights the need for innovative solutions to augment their durability and longevity. The primary focus of this research is self-healing pavements, with a particular emphasis on those reinforced with steel fibers. This innovative approach is designed to address common pavement damage issues by autonomously repairing and restoring pavement functionality without human intervention, thus reducing the frequency of maintenance and minimizing traffic disruptions. The paper deals with the effectiveness of steel fibers in enhancing the self-healing ability of bituminous pavements. It analyzes their impact on various factors, including crack healing, load-bearing capacity, and overall pavement resilience. The outcomes of this research provide fields of engineering and innovation.]]></description>
      <pubDate>Tue, 04 Nov 2025 09:13:38 GMT</pubDate>
      <guid>https://trid.trb.org/View/2601311</guid>
    </item>
    <item>
      <title>Comparative life cycle assessment of UHPFRC bridge deck overlays</title>
      <link>https://trid.trb.org/View/2611508</link>
      <description><![CDATA[This study compares the environmental impact of Ultra-High Performance Fiber Reinforced Concrete (UHPFRC) and conventional Steel Fiber Reinforced Concrete (SFRC) in hypothesized bridge deck overlay applications through comprehensive Life Cycle Assessment (LCA). Despite UHPFRC's higher initial material cost, an analysis that uses the function of overlaying 1 m2 area of a bridge deck and maintaining a specified structural performance, specifically the load-bearing capacity against design live loads, for a period of 100 years, demonstrates the UHPFRC superior environmental performance across multiple categories. UHPFRC achieved significant reductions in energy consumption (39 %), fossil resource usage (oil: 53 %, coal: 26 %), CO₂ emissions (34 %), and most air pollutants (approximately 30 %). The material superior strength properties enable thinner overlays, resulting in substantial environmental benefits throughout the entire life cycle. Using the LIME3 methodology, UHPFRC demonstrated net environmental benefits 1.76 times higher than conventional SFRC, with particularly notable improvements in fossil fuel consumption (46 %), mineral resources (56 %), and water resources (71 %). These advantages also stem from UHPFRC's extended service life due to enhanced fatigue life endurance, significantly reducing major maintenance frequency and environmental impact per functional unit. The findings support UHPFRC as a more sustainable solution for infrastructure rehabilitation.]]></description>
      <pubDate>Mon, 27 Oct 2025 09:37:33 GMT</pubDate>
      <guid>https://trid.trb.org/View/2611508</guid>
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