<rss version="2.0" xmlns:atom="https://www.w3.org/2005/Atom">
  <channel>
    <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+PHBhcmFtIG5hbWU9ImxvY2F0aW9uIiB2YWx1ZT0iMCIgLz48L3BhcmFtcz48ZmlsdGVycz48ZmlsdGVyIGZpZWxkPSJpbmRleHRlcm1zIiB2YWx1ZT0iJnF1b3Q7TWlsZCBzdGVlbCZxdW90OyIgb3JpZ2luYWxfdmFsdWU9IiZxdW90O01pbGQgc3RlZWwmcXVvdDsiIC8+PC9maWx0ZXJzPjxyYW5nZXMgLz48c29ydHM+PHNvcnQgZmllbGQ9InB1Ymxpc2hlZCIgb3JkZXI9ImRlc2MiIC8+PC9zb3J0cz48cGVyc2lzdHM+PHBlcnNpc3QgbmFtZT0icmFuZ2V0eXBlIiB2YWx1ZT0icHVibGlzaGVkZGF0ZSIgLz48L3BlcnNpc3RzPjwvc2VhcmNoPg==" rel="self" type="application/rss+xml" />
    <description></description>
    <language>en-us</language>
    <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>
    <image>
      <title>Transport Research International Documentation (TRID)</title>
      <url>https://trid.trb.org/Images/PageHeader-wTitle.jpg</url>
      <link>https://trid.trb.org/</link>
    </image>
    <item>
      <title>Investigation of equal strength mild steel tenons as displacement restraining devices for long-span railway arch bridges</title>
      <link>https://trid.trb.org/View/1984427</link>
      <description><![CDATA[In this paper, Equal Strength Mild Steel Tenons (ESMSTs) have been developed as a candidate for displacement restraining device of long-span railway arch bridges. They are made of a cheap and easily fabricated material, low carbon mild steel. The geometry is designed according to the principle of equal strength beam to make full use of the ductile deformation of mild steel, increase the energy dissipation capacity and alleviate damage concentration. To begin, the design concept of ESMST is given followed by the derivation of the theoretical formula of the mechanical properties with the vertical free mechanism which is of no vertical load to guide the design. A pseudo-static experiment program is then presented for two full-scale 2.5 m tall ESMSTs. Besides, a rigorous 3D numerical model was developed in ABAQUS to reproduce the behavior of ESMSTs to guide the design of ESMST in future application. Finally, a case study is presented for the application of ESMST in one of typical long-span railway arch bridges to evaluate its efficiency and effectiveness. The test results indicate that the tested ESMSTs can meet the demands of the long-span railway arch bridges for high initial stiffness, energy dissipation and deformability under strong earthquake action. It was also found that the ESMST had good fatigue performance. In addition, the developed numerical model in ABAQUS can accurately reproduce hysteretic behavior of the ESMST and hence can be used with confidence in the future to guide the design of ESMSTs. Results from the case study show the ESMSTs can work effectively and efficiently in reducing the response of long-span railway arch bridges without imposing much additional demand on the substructure. Findings of this study can provide guidance on the design of ESMSTs as well as support for the application of the ESMSTs in long-span railway arch bridges.]]></description>
      <pubDate>Mon, 29 Aug 2022 09:27:31 GMT</pubDate>
      <guid>https://trid.trb.org/View/1984427</guid>
    </item>
    <item>
      <title>Lightweight Concrete: Development of Mild Steel in Tension</title>
      <link>https://trid.trb.org/View/1729696</link>
      <description><![CDATA[Much of the fundamental basis for the current lightweight concrete provisions in the AASHTO LRFD Bridge Design Specifications is based on research of lightweight concrete (LWC) from the 1960s. The LWC that was part of this research used traditional mixes of coarse aggregate, fine aggregate, portland cement, and water. Broad-based advancement in concrete technology over the past 50 years has given rise to significant advancements in concrete mechanical and durability performance. This document describes the results of tests on high-strength LWC splice beams that were conducted as part of an overall FHWA research project on LWC. The FHWA test results are included in a database of bond tests with over 200 tests on LWC specimens available in the literature. An analysis of the database was used to develop potential revisions to provisions related to LWC within Chapter 5 of the AASHTO LRFD Specifications. The framework for addressing LWC in the specifications that was proposed previously as a part of this research effort is applied to the design expression for development length of mild steel. The framework includes a proposed revision to the definition of LWC and a proposed modification factor relevant to LWC structural performance.]]></description>
      <pubDate>Fri, 28 Aug 2020 17:41:12 GMT</pubDate>
      <guid>https://trid.trb.org/View/1729696</guid>
    </item>
    <item>
      <title>Method for Separating Stress of Spot Welds under Combined Loading Using Nominal Structural Stress Calculation Method</title>
      <link>https://trid.trb.org/View/1686459</link>
      <description><![CDATA[In this paper, the stress distribution around the spot welds under the combined loads of shear, bending, peeling and torsion was separated into the components of each load by giving the displacement boundary conditions in the nominal structural stress calculation method for each load. Using this method, the contribution of each load to the nominal structural stress of the spot welded structure was calculated. The calculation results are useful for devising a simple fatigue test specimen that reproduces the fatigue phenomenon of the actual structural member.]]></description>
      <pubDate>Tue, 31 Mar 2020 16:48:32 GMT</pubDate>
      <guid>https://trid.trb.org/View/1686459</guid>
    </item>
    <item>
      <title>Surface modification of mild steel by co-deposition using Zn-ZnO-Ant hill particulate composite coating in simulated sea water</title>
      <link>https://trid.trb.org/View/1640527</link>
      <description><![CDATA[Naval ships are constructed with mild steel. Corrosion is a major concern in a marine environment. This particular type of material degradation has recently received more attention by the marine industry. Effort is make researchers to combat this problem. In this work, co-deposition of Zn-ZnO-Ant hill powder composite coating on mild steel was reported with the view to combat this problem. The Ant hill powder was varied from 0 to 25 g. A 10 mL of orange juice was used as an organic additive. The coating thickness, surface roughness, microstructure, hardness values, wear rate and potentiodynamic polarization in simulated sea water were determined. The addition of orange juice as an additive changed the morphological and texture of the coating, and the hardness values, wear and corrosion rate were enhanced. Maximum corrosion protection efficiency of 92.86% and 94.41% was obtained at Zn-ZnO-25gAnt hill and Zn-ZnO-25gAnt hill + orange juice, respectively. The work has established that Zn-ZnO-Ant hill powder composite coating on mild steel is promising.]]></description>
      <pubDate>Tue, 24 Sep 2019 14:52:59 GMT</pubDate>
      <guid>https://trid.trb.org/View/1640527</guid>
    </item>
    <item>
      <title>Residual Protection of Steel Following Suspension of Impressed Current Cathodic Protection System on a Wharf Structure</title>
      <link>https://trid.trb.org/View/1594924</link>
      <description><![CDATA[Impressed Current Cathodic Protection (ICCP) is an established technique for the remediation of steel reinforced concrete structures. There have been examples of residual protection being afforded to structures where the ICCP system has been de-activated but to date no detailed investigation over the duration of the de-activation period has been undertaken. This study reports the findings of a systematic study in which an ICCP system was suspended for a period of 106 days. The results showed that based on the absolute passive potential criterion of maintaining a potential more positive than −150 mV with respect to a silver silver chloride reference electrode, 10% of the elements studied displayed residual protection. However, analysing the data based on the movement of the instant off potential to more positive values with time showed that 85% displayed evidence of residual protection. The data displayed a good correlation between charge passed and the duration of residual protection.]]></description>
      <pubDate>Thu, 23 May 2019 10:24:38 GMT</pubDate>
      <guid>https://trid.trb.org/View/1594924</guid>
    </item>
    <item>
      <title>Cyclic Performance of Precast Concrete Segmental Bridge Columns: Simplified Analytical and Finite Element Studies</title>
      <link>https://trid.trb.org/View/776728</link>
      <description><![CDATA[The cyclic performance of an unbonded precast concrete segmental bridge column system is examined in this paper. This system uses unbonded posttensioning to enhance the self-centering capability and mild steel reinforcement extended across the segment joints to enhance the energy dissipation capability. A simplified analytical method for the system under lateral load is established, and the simplified analytical results are compared with those obtained from the three-dimensional (3-D) finite element method (FEM). On the basis of the simplified analytical method, suggestions are made about both the height of the column to which the mild steel should be continued from the foundation and the limitation of the steel ratio to minimize residual displacement. With the steel ratio varied, the correlation between the energy dissipation capability and the self-centering capability of this system is investigated by means of the 3-D FEM. From simulation results, it was found that both the energy dissipation and the residual displacement increase as the steel ratio increases. It was also found that the system with a steel ratio suggested by the proposed equation resulted in a significant increase in energy dissipation compared with the one without mild steel across the joints, while the recommended system maintained a small residual displacement after loading reversals.]]></description>
      <pubDate>Thu, 08 Jun 2006 11:26:04 GMT</pubDate>
      <guid>https://trid.trb.org/View/776728</guid>
    </item>
    <item>
      <title>ALUMINUM BRONZE ALLOY FOR CORROSION-RESISTANT REBAR</title>
      <link>https://trid.trb.org/View/481483</link>
      <description><![CDATA[This Innovations Deserving Exploratory Analysis (IDEA) project investigated rebars of three alloys for resistance to chloride ions at two pH levels.  The alloys were aluminum bronze, ductile iron, and mild steel.  Samples of mild steel rebar were selected from commercial sources.  Rebars of aluminum bronze and ductile iron had to be produced by a custom-made process.  Aluminum bronze rebar showed excellent corrosion resistance.  Both ductile iron and steel had poor corrosion resistance, with ductile iron being somewhat better than mild steel.  The mechanical properties of the custom-made aluminum bronze rebar tested lower than the steel rebar.  It was demonstrated that an inexpensive cold working process called drawing could increase the mechanical properties of the aluminum bronze alloy.  An 18% reduction in area by cold drawing was sufficient to raise the yield strength of aluminum bronze rebar to meet ASTM specifications for steel rebar.]]></description>
      <pubDate>Mon, 26 Mar 2001 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/481483</guid>
    </item>
    <item>
      <title>EFFECT OF EXPOSURE ANGLE ON THE MARINE ATMOSPHERIC CORROSION OF MILD STEEL</title>
      <link>https://trid.trb.org/View/467591</link>
      <description><![CDATA[The effect of exposure angle on mild-steel corrosion in a marine atmosphere was assessed, and was found to vary with the angle of exposure, especially above 75o: and approximately- 425% increase in corrosion rate was evident at 180o.  A similar trend was observed in the rate of salt accumulation on the test panel.  There were positive linear relationships between the angle of exposure and mild- steel corrosion, and between the rate of salt accumulation and the corrosion of the mild steel sample.  This suggest that the angle of metal exposure influences salt accumulation, thereby affecting the corrosion rate.  Theoretical values for Fe304 content in the corrosion product were in the range 79-89%.]]></description>
      <pubDate>Mon, 04 Nov 1996 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/467591</guid>
    </item>
    <item>
      <title>CORROSION BEHAVIOUR OF MILD STEEL IN OFFSHORE WATERS OF THE ARABIAN SEA</title>
      <link>https://trid.trb.org/View/433703</link>
      <description><![CDATA[No abstract provided.]]></description>
      <pubDate>Mon, 14 Aug 1995 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/433703</guid>
    </item>
    <item>
      <title>EFFECT OF STRESS RATIO ON BENDING FATIGUE STRENGTH IN BUTT-WELDED JOINTS OF LOW-CARBON STEEL AND HIGH STRENGTH STEEL</title>
      <link>https://trid.trb.org/View/442354</link>
      <description><![CDATA[This paper is concerned with the effect of stress ratio on the fatigue strength of butt-welded joints made by two kinds of steels (0.18 C steel and 780 MPa high strength steel).  The effect of mean stress on the fatigue strength of welded joints depends on the type of steel and the value of a notch root radius at the weld toe.  The fatigue strength of a welded joint with a small notch root radius at the weld tow is remarkably influenced by the mean stress.  In this case, the fatigue limit of the welded joint increases when the positive mean stress changes into the negative.  The fatigue strength of a welded joint with a large notch root radius at the weld toe is a little affected by the mean stress.  The beneficial effect of TIG treatment on the fatigue strength is more remarkable at the stress ratio R=0 than at R=-1 and also more remarkable in 780 MPa high strength steel than in 0.18 C steel.]]></description>
      <pubDate>Mon, 14 Aug 1995 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/442354</guid>
    </item>
    <item>
      <title>THE EFFECT OF INHIBITORS ON THE CORROSION OF MILD STEEL IN ACIDIC AND SEA-WATER ENVIRONMENTS</title>
      <link>https://trid.trb.org/View/442366</link>
      <description><![CDATA[The corrosion of mild steel in dilute sulphuric acid, acetic acid and sea-water environments, inhibited in turn with triethylamine, diethylamine, sodium benzoate and zinc oxide inhibitors, was studied in this work using the weight-loss and potential-measurement techniques.  In particular, the inhibitors were very effective in dilute sulphuric acid, where their efficiency was very significant.  Diethylamine inhibitor was found to be very effective in acetic acid, while triethylamine's effective was slightly above average and that of sodium benzoate and zinc oxide were less than average.  Only diethylamine and sodium benzoate inhibitors, with triethylamine and zinc oxide, were not inhibitive at all in the concentrations used in the sea-water medium.  The synergistic effect of some of the inhibitors was also confirmed by potential measurement.]]></description>
      <pubDate>Mon, 14 Aug 1995 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/442366</guid>
    </item>
    <item>
      <title>CORROSION INHIBITION BY SOME ORGANIC COMPOUNDS OF MILD STEEL IN SYNTHETIC AND NATURAL SEAWATER</title>
      <link>https://trid.trb.org/View/445749</link>
      <description><![CDATA[Six organic compounds, N-1 naphthylethylene diamine dihydrochloride (a), N,N-diethyl-P-phenylenediamine sulphate (B), ethylene diamine tetra-acetic acid (C), hexamethylenetetramine (D), sulphanilamide (E), and 1-naphthylamine (F), were assessed for corrosion inhibition of mild steel using potentiodynamic polarization. The concentrations required to achieve maximum inhibition varied with the type of organic compound and the electrolyte.  The differences observed are due to the chemical nature of the compounds and the electrolyte.  In general, the six compounds were all found to control the anodic process more than the cathodic process, suggesting that they may be mixed-type inhibitors. Compound E was found to be a weak inhibitor in synthetic seawater, whereas in natural seawater it acted as a very efficient inhibitor.  The corrosion-inhibition efficiency of the compounds in synthetic seawater was in the order A>D>C>B>F>E, whereas in natural seawater their efficiency was in the order E>C>A>F>B>D.]]></description>
      <pubDate>Mon, 14 Aug 1995 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/445749</guid>
    </item>
    <item>
      <title>STUDY OF DEFORMATION MECHANISM AND STRENGTH CHARACTERISTICS OF SHIP STRUCTURAL MATERIALS UNDER CYCLIC LOADING CONDITIONS (2ND REPORT)</title>
      <link>https://trid.trb.org/View/450110</link>
      <description><![CDATA[Complete compression-to-tension load-controlled axial loading test programs, constant amplitude and random loading with an exponential distribution of stress amplitude, were performed for mild steel plate specimens.  From the results, coefficients in the visco elastic-plastic constitutive equation derived in a previous paper are given as a function of both the value of applied stress and their cycles.  The correlation between fatigue limit and the stress at the transition point is discussed.  The following results were obtained: 1) there is a good correlation between fatigue limit and the stress at the transition point under variable-amplitude loading conditions; 2) the transition point stress decreases when stresses larger than fatigue limit (corresponding to the transition point stress) are applied, and then converges to a certain value, depending on the value of the larger applied stresses and their cycles; 3) given the condition of variable amplitude loading, the transition point stress can be calculated using the derived constitute equation; and 4) using the above results, a method for determining fatigue limit under variable amplitude loading conditions is proposed.]]></description>
      <pubDate>Mon, 14 Aug 1995 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/450110</guid>
    </item>
    <item>
      <title>NCEER-TAISEI CORPORATION RESEARCH PROGRAM ON SLIDING SEISMIC ISOLATION SYSTEMS FOR BRIDGES: EXPERIMENTAL AND ANALYTICAL STUDY OF A SYSTEM CONSISTING OF LUBRICATED PTFE SLIDING BEARINGS AND MILD STEEL DAMPERS. TECHNICAL REPORT</title>
      <link>https://trid.trb.org/View/411874</link>
      <description><![CDATA[This report describes the results of an experimental study of the behavior of a bridge seismic isolation system consisting of lubricated flat sliding bearings and mild steel dampers. Earthquake simulator tests have been performed on a model bridge structure both isolated with this system and non-isolated.  The experimental results demonstrate that the system is capable of maintaining the forces transmitted to the substructure at a preset limit, however at the expense of significant permanent displacements.  Analytical techniques are used to predict the dynamic response of the system and the obtained results are in good agreement with the experimental results.]]></description>
      <pubDate>Thu, 16 Feb 1995 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/411874</guid>
    </item>
    <item>
      <title>SEISMIC ENERGY BASED FATIGUE DAMAGE ANALYSIS OF BRIDGE COLUMNS: PART I - EVALUATION OF SEISMIC CAPACITY. TECHNICAL REPORT</title>
      <link>https://trid.trb.org/View/411876</link>
      <description><![CDATA[This study is concerned with the computational modeling of energy absorption (fatigue) capacity of reinforced concrete bridge columns by using a cyclic dynamic Fiber Element computational model.  The results may be used with a hysteretic rule to generate seismic energy demand.  By comparing the ratio of energy demand to capacity, inferences of column damageability or fatigue resistance can be made.  A complete analysis methodology for bridge columns is developed.  The hysteretic behavior of ordinary mild steel as well as high threadbare prestressing reinforcement--stability, degradation, and consistency of cyclic behavior--is explained.  An energy based universally applicable low cycle fatigue model for such reinforcing steels is proposed.  A hysteretic model for confined and unconfined concrete subjected to both tension or compression cyclic loading is developed.  The model is also capable of simulating gradual crack closure under cyclic loading.  A Cyclic Inelastic Strut-Tie (CIST) model is developed, in which the comprehensive concrete model stress-strain proved to be suitable.  A fiber element based column analysis program UB-COLA is also developed, which is capable of accurately predicting the behavior of reinforced concrete columns subjected to inelastic cyclic deformations.  The program is useful in predicting the failure model of high axial load columns.  For shear critical columns, the cyclic inelastic behavior is accurately simulated through the CIST modeling technique.]]></description>
      <pubDate>Thu, 16 Feb 1995 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/411876</guid>
    </item>
  </channel>
</rss>