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Showing 1 to 8 of 8 for “"concrete pore solution"”.
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Durability of Silane Sealer in a Highly Alkaline Environment
… present in certain aggregates and alkalis in the concrete pore solution. The reaction can lead to expansion and severe damage in concrete members. One method to mitigate ASR expansion is to use a penetrating sealer such as silane. A set of columns located in a food preparation facility was treated …
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The development of a rapid chloride test for concrete and its use in engineering practice
… the short test duration, it is possible to test concretes cured for very short periods. Samples can also be left immersed in chloride solution and re-tested at later ages to study time-dependent phenomena such as chloride binding. The chloride conductivity test involves the standardisation of the …
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Characterization, Evaluation, And Repair of Full-Scale Alkali-Silica Reaction Affected Structural Concrete
… reaction (ASR), a chemical reaction occurring in concrete between reactive siliceous minerals in some aggregates and alkalis in the concrete pore solution, can produce an expansive gel that, in the presence of sufficient moisture, leads to expansion and cracking. This not only decreases mechanical …
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CFRP Prestressed Concrete Exposed to Moisture
… matrix-dominated changes to the CFRP-concrete bond when the CFRP rods are cast into concrete as prestressed reinforcement. Experiments were conducted to measure the transverse swelling and moisture uptake rates of stressed and unstressed CFRP rods immersed in water and concrete pore …
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Investigation of parameters governing the corrosion protection efficacy of fusion bonded epoxy coatings
… the passivation of the bare steel exposed to the concrete pore solution at the breaches in the epoxy coating is not the same as a bare bar under similar exposure conditions allowing it instead to corrode at lower concrete chloride concentration levels than bare bars. The results also show a …
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Assessment of Commercial Corrosion Inhibiting Admixtures for Reinforced Concrete
Corrosion of reinforcing steel in concrete exposed to chloride-laden environments is a well-known and documented phenomenon. The need for cost effective systems for protection against corrosion has become increasingly clear since the first observations of severe corrosion damage to interstate …
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Reactivity of crystalline slag phases in cementitious systems
… Efforts to incorporate industrial wastes into concrete in order to offset the environmental burden of traditional cements have been growing in recent years. Reactive industrial wastes such as blast furnace slag and fly ash have been the subject of much research and have been successfully …
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Performance Evaluation of Epoxy-Coated Reinforcing Steel and Corrosion Inhibitors in a Simulated Concrete Pore Water Solution
… protection evaluation test was developed for concrete corrosion inhibitor admixtures. The test solution is a simulated concrete pore water. Corrosion is accelerated by evaluating the temperature to field conditions of 40 C. The test consists of a 7 day pretreatment period followed by a 90 day …