<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=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" 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>Molecular Dynamics Study of Interaction Between Corrosion Inhibitors, Nanoparticles, and Other Minerals in Hydrated Cement</title>
      <link>https://trid.trb.org/View/918413</link>
      <description><![CDATA[How NaNO2 corrosion inhibitors and water molecules interact with nanoparticles and other minerals in hydrated cement is investigated at the nanoscale, with a focus on the dynamic behavior of inhibitors in the pore solution at different length and timescales. Representative minerals in hydrated cement (ettringite, Friedel’s salt, jennite, kuzelite, portlandite, and tobermorite) and nanoparticles (Al2O3, Fe2O3, SiO2, and TiO2) are computationally studied. The parameters for potential functions of NO2 ion necessary to describe interactions are evaluated from inverse parameterization. The focus is on the structure of nanoparticles, minerals, and water molecules near the solution–solid interface. Information on interactions of aqueous species with their surroundings is retrieved by molecular dynamics simulations, which provide insight into dynamic behaviors around the solution–solid interfaces. Further analysis reveals that the solid surfaces have a strong effect on the dynamic behaviors of corrosion inhibitors.]]></description>
      <pubDate>Thu, 27 May 2010 15:29:38 GMT</pubDate>
      <guid>https://trid.trb.org/View/918413</guid>
    </item>
    <item>
      <title>Corrosion Inhibition Performances at the Steel-Mortar Interface. Part 2: An Electrochemical Characterization</title>
      <link>https://trid.trb.org/View/884821</link>
      <description><![CDATA[This research aimed to unravel the role of salt contamination and admixed corrosion inhibitors in the processes of cement hydration and rebar corrosion, using mostly electrochemical impedance spectroscopy.  The admixing of all three inhibitors in fresh mortar was found to increase the polarization resistance of steel, indicating reduced corrosion rate of the steel over 48-day exposures to salt ponding.  0.05 M N,N'-dimethylethanolamine was the most capable and reliable corrosion inhibitor, followed by 0.5M sodium nitrite; whereas 0.05M disodium B-glycerophosphate was a slower and less capable corrosion inhibitor.  The admixing of NaCl and inhibitors in fresh mortar generally increased and decreased the electrical resistance of hardened mortar, respectively.  The admixing of inhibitors in fresh mortar consistently increased the capacitance of hardened mortar.  The effect of sodium nitrite on the resistance of steel-mortar interfacial film offset that of NaCl, attributable to the formation of a protective ferric oxide film.]]></description>
      <pubDate>Mon, 23 Mar 2009 07:41:24 GMT</pubDate>
      <guid>https://trid.trb.org/View/884821</guid>
    </item>
    <item>
      <title>A STUDY OF CORROSION INHIBITOR PERFORMANCE IN CHLORIDE CONTAMINATED CONCRETE BY ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY</title>
      <link>https://trid.trb.org/View/474852</link>
      <description><![CDATA[The deterioration of the highway and bridge infrastructure has received significant attention in recent years.  A major contributing factor to this deterioration is the reinforcing steel corrosion.  Electrochemical impedance spectroscopy and linear polarization techniques were used to study 5-year-old "lollipop-like" concrete specimens containing sodium nitrite and dinitrobenzoic acid.  An equivalent circuit model considering the physical characteristics of the rebar/concrete (RC) interface was used to simulate the impedance spectra.  The RC parameters obtained from the impedance spectra simulation including the maximum phase angle shift and polarization resistance were used to characterize the rebar corrosion.  The effectiveness of the corrosion-inhibiting additives in the presence and absence of chloride ions was evaluated.  The corrosion current densities estimated by impedance measurement were confirmed by those determined using linear polarization techniques.  The purpose of this study was to evaluate the long-term performance potential of sodium nitrite and dinitrobenzoic acid used as the corrosion-inhibiting additives in chloride contaminated reinforced concrete.]]></description>
      <pubDate>Tue, 09 Dec 1997 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/474852</guid>
    </item>
    <item>
      <title>DURABILITY OF REINFORCED LIGHTWEIGHT MORTARS WITH CORROSION INHIBITORS</title>
      <link>https://trid.trb.org/View/469780</link>
      <description><![CDATA[The authors of this experimental work studied the performance of reinforced mortar specimens containing Greek fine-pumice aggregates together with corrosion inhibitors added to reduce the corrosion rate of steel reinforcement in a chloride environment. The durability of the specimen was assessed by measuring the corrosion potential and the mass loss time dependence of the steel rebar, the carbonation depth, the porosity, and the compressive strength of the specimens.  The results were correlated to reveal that the corrosion inhibitors studied have a protective effect on the steel, while the changes of the mechanical strength of the relative lightweight mortars are not significant compared to the practical needs.  Sodium nitrite was the most efficient inhibitor in both concentrations examined, that is, 2 and 5 percent.]]></description>
      <pubDate>Mon, 03 Feb 1997 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/469780</guid>
    </item>
    <item>
      <title>USE OF NITRITE SALT AS CORROSION INHIBITOR ADMIXTURE IN REINFORCED CONCRETE STRUCTURES IMMERSED IN SEA-WATER . ADMIXTURES FOR CONCRETE: IMPROVEMENT OF PROPERTIES. PROCEEDINGS OF THE INTERNATIONAL SYMPOSIUM HELD BY RILEM (THE INTERNATIONAL UNION OF TESTING AND RESEARCH LABORATORIES FOR MATERIALS AND STRUCTURES), BARCELONA, MAY 14-17, 1990</title>
      <link>https://trid.trb.org/View/360697</link>
      <description><![CDATA[Sodium nitrite is supposed to be a corrosion inhibitor of reinforced concrete structures in contact with chlorides. In the present work the effect of 4% sodium nitrite by weight of cement on the corrosion process of cracked reinforced concrete specimens (w/c=0.50) immersed in sea-water has been studied.  It has been found that in cracked concrete specimens corrosion becomes more severe in the presence of sodium nitrite.  The effect is quicker the larger the crack width of the concrete.  Sodium nitrite does not substantially modify the chloride diffusion through uncracked concrete specimens, so that the above negative effect of sodium nitrite should be expected even in uncracked reinforced concrete areas but after longer immersion time in sea-water. (Author/TRRL)]]></description>
      <pubDate>Sat, 31 Aug 1991 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/360697</guid>
    </item>
    <item>
      <title>ANTIFREEZE ADMIXTURES FOR COLD WEATHER CONCRETING</title>
      <link>https://trid.trb.org/View/351976</link>
      <description><![CDATA[Based on a literature survey, a laboratory study was begun to evaluate promising antifreeze compounds.  Laboratory tests were performed to study the beneficial and detrimental effects of antifreeze admixturues on concrete properties such as strength gain at low temperature, freeze-thaw durability, workability and corrosion of embedded metal.  It was found that antifreeze concrete can be cured at temperatures significantly below 0 deg C without harming its performance compared to that of normal concrete cured at room temperature.  Of the antifreeze concrete mixes tested, those containing sodium nitirite/calcium nitrite and sodium nitrite/potassium carbonate performed the best.  Even for those concretes whose strength lagged behind that of the control mix, the prognosis is that they will eventually recover full strength when thawed.]]></description>
      <pubDate>Thu, 28 Feb 1991 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/351976</guid>
    </item>
    <item>
      <title>INFLUENCE OF THREE COMMONLY USED INORGANIC COMPOUNDS ON PORE SOLUTION CHEMISTRY AND THEIR POSSIBLE IMPLICATIONS TO THE CORROSION OF STEEL IN CONCRETE</title>
      <link>https://trid.trb.org/View/302017</link>
      <description><![CDATA[An experimental investigation was conducuted to assess the effects of calcium chloride, calcium nitrate, and sodium nitrite on pore solutions chemistry and their relationship to corrosion of steel in concrete.  The possibility of an ion-exchange mechanism between ingressed chloride ions and complex admixed ions also was investigated.  The results indicated that the concentration of admixed ions in the aqueous phase (pore solution) decreased significaltly with time.  Thence, it is speculated that these cheimcals at commonly used dosages are unlikely to promote or inhibit corrosion of reinforcing steel in concrete very significantly.  It was found that no ion exchange occurred between ingressed chloride ions and bound admixed anions.]]></description>
      <pubDate>Thu, 30 Nov 1989 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/302017</guid>
    </item>
    <item>
      <title>SOME LABORATORY EXPERIMENTS ON THE INHIBITOR EFFECT OF SODIUM NITRITE ON REINFORCEMENT CORROSION</title>
      <link>https://trid.trb.org/View/288561</link>
      <description><![CDATA[The summary of several years of research about the inhibitor effect of NO2 ions on the corrosion of reinforcement is presented.  Their inhibitor effect has been studied using galvanostatic and potentiodynamic polarization curves, and we have measured the corrosion rates using the polarization resistance method (linear polarization).  Verification has been done by this last technique, showing that the NO2 ions in concrete, if used in sufficient proportion, are a complete inhibitor when the Cl ion is added during the mixing (for example, mixing with seawater, calcium chloride as an accelerator inhibitor).  Insufficient amounts of NO2 ion have never provoked more corrosion in our experiments in concrete.  The presence of NO2 ion always has produced a beneficial effect.  The NO2 ions are also beneficial in carbonated concrete, suppressing or at least reducing the attacked area and the corrosion rate of the reinforcements.]]></description>
      <pubDate>Mon, 31 Oct 1988 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/288561</guid>
    </item>
    <item>
      <title>MOBILITY AND INDIVIDUAL TRANSPORT IN THE NINETIES</title>
      <link>https://trid.trb.org/View/197230</link>
      <description><![CDATA[This report describes the results of a scenario study on mobility and the extent of individual transport in the Federal Republic of Germany for the period 1980 to 2000. The scenario was conceived within the context of the announcement of a project "research vehicle" on behalf of the Federal German Ministry for Research and Technology. The aim of the project is to describe the economic and societal boundary conditions within which individual transport could develop in the coming decades.  The results of this study are compared with recent forecasts which take the changes in the total economy since 1978 into consideration.  The upper limit of the developments described in the scenario agrees to a large extent with the developments forecast today as the most probable. Thus conclusions drawn concerning the requirements on the technology of the passenger car of the nineties will continue to be valid.  (Author/TRRL)]]></description>
      <pubDate>Tue, 30 Aug 1983 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/197230</guid>
    </item>
    <item>
      <title>NANO2-NASO4 COMBINED ADDITIVE IN COLD CONCRETE</title>
      <link>https://trid.trb.org/View/143562</link>
      <description><![CDATA[Experiments were conducted in which NaNO2, Na2SO4 and N(C2H4OH)3 were added to cold concrete to prevent freezing and promote strengthening. NaNO2 was added in an amount equal to 13.3% of the water content of the concrete, and Na2SO4 and N(C2H4OH)3 in amounts equal to 3% and 0.03%, respectively, of the cement content. The concrete was kept from freezing at -10 C and the strength increased to over 60% of the design strength after 28 days and 80%-90% of the design strength after three months. If this type of additive is used under positive temperature conditions (+10 to +15 C), it results in an early strengthening effect, good concrete density, resistance to infiltration of up to 28-30 kg/sq cm, strength in the later stages 5 to 10% greater than that of ordinary concrete and physical properties superior to those of ordinary concrete. Because of the rust-preventing action of NaNO2, the cold concrete additives do not have any rusting or corroding effects on the steel bars. The facts that cold concrete is convenient to work with, that the additives can be obtained easily and that the costs are comparatively low make this a method that is well worth adopting and using widely in carrying out construction during winter. (Author)]]></description>
      <pubDate>Mon, 29 Dec 1980 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/143562</guid>
    </item>
    <item>
      <title>THE INHIBITING ACTION OF DIFFERENT DOSAGES OF SODIUM NITRITE ON THE CORROSION OF REINFORCEMENT IN PRESTRESSED BEAMS USING THE RESISTANCE TO POLARIZATION AS A MEASUREMENT TECHNIQUES</title>
      <link>https://trid.trb.org/View/58900</link>
      <description><![CDATA[Amongst the best known methods of protecting reinforcement in concrete against the aggressive action of chloride ions, NaN92 was tested as an inhibitor, in the proportions 1 - 1, 5 - 2 - 2, 5 and 3% with respect to the weight of cement, with 2% of calcium chloride.  The test samples were small prestressed concrete beams 0.1 x 0.1 x 2M, made of p-350 and p-450 cement.  The tests are planned for five years, and the study gives partial results obtained after ten months.  The resistance to polarization is used as a non-destructive measurement of the rate of corrosion.  All the dosages of NaN02 studied in the environmental test conditions (pressure and temperature constant) inhibit the corrosive action of the chloride ions on the steel of the reinforcement; the larger the dosage, the greater the inhibiting effect.  The values of the resistance to polarization have A semi-quantitative validity, and it is necessary to conduct new tests which permit the linking of this index to loss of weight used as a measure of corrosion. /TRRL/]]></description>
      <pubDate>Thu, 18 May 1978 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/58900</guid>
    </item>
    <item>
      <title>THE USE OF CORROSION INHIBITORS FOR THE PROTECTION OF CONCRETE REINFORCEMENT / IN ITALIAN/</title>
      <link>https://trid.trb.org/View/108184</link>
      <description><![CDATA[A STUDY IS DESCRIBED ON THE ELECTRO-CHEMICAL EFFECTS OF 2 STEEL CORROSION INHIBITORS: POTASSIUM CHROMATE AND SODIUM NITRITE. TESTS WERE CARRIED OUT ON MORTAR PREPARED WITH THREE-TYPES OF CEMENT: PORTLAND CEMENT, BLAST-FURNACE CEMENT, AND POZZOLANIC CEMENT, SOME WITH AND SOME WITHOUT CALCIUM CHLORIDE. DURING MOULDING, A STEEL BAR WAS INSERTED IN EACH CYLINDICAL SAMPLE. AFTER 48 HOURS THE SAMPLES WERE IMMERSED IN A CALCIUM HYDROXIDE SOLUTION IN WHICH GRAPHITE ELECTRODES WERE ALSO PLACED. A CURRENT OF INCREASING CONCRENTRATION WAS APPLIED TO THE STEEL BAR AND GRAPHITE CATHODES, AND ANODIC POLARIZATION CURVES WERE DRAWN. THOSE CURVES SHOW THAT FOR PORTLAND AND POZZOLANIC CEMENT THE TWO INHIBITORS COMPLETELY NEUTRALIZE THE DEPASSIVATING EFFECT OF CALCIUM CHLORIDE. WITH REGARD TO BLAST FURNACE CEMENT, THE NEUTRALIZATION IS LESS COMPLETE FOR 2 PER CENT OF CALCIUM CHLORIDE BUT BECOMES COMPLETE WHEN THE PROPORTION BECOMES 1 PER CENT OF CALCIUM CHLORIDE. THIS SUGGESTS THAT THERE EXISTS A COMPETITIVE EFFECT BETWEEN THE INFLUENCE OF THE INHIBITOR AND THAT OF THE ADMIXTURE /LCPC/RRL/]]></description>
      <pubDate>Tue, 13 Oct 1970 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/108184</guid>
    </item>
  </channel>
</rss>