Alkali-Silica Reaction in Concrete by R. N. Swamy

By R. N. Swamy

This publication stories the basic reasons and spectrum results of ASR. It considers he advances which were made in our figuring out of this challenge through the global.

Show description

Read Online or Download Alkali-Silica Reaction in Concrete PDF

Similar civil & environmental books

Bridge Loads

This publication offers a close precis of bridge lots from a world point of view. The authors conceal all features from the method in the back of the calculation of bridge rather a lot and the complicated interactions among lots and bridges, to monetary issues. a variety of bridge rather a lot are lined, together with street automobile so much, pedestrian so much, railing so much and wind so much.

Ground Improvement Techniques

Bargains with formation and improvement of floor, compaction, drainage equipment, and extra.

Surface Wave Methods for Near-Surface Site Characterization

Advance a better figuring out of the way and Why floor Wave trying out Works utilizing examples and case experiences at once drawn from the authors’ adventure, floor Wave equipment for Near-Surface website Characterization addresses either the experimental and theoretical features of floor wave propagation in either ahead and inverse modeling.

Fire Officer's Handbook Of Tactics

Geared toward firefighters and fireplace officials, presents info on glossy firefighting strategies. summary: smooth firefighting is a continuously evolving technological know-how with new applied sciences consistently being utilized to the hearth provider. within the newest version of this perennial favourite, Norman examines those new applied sciences and the way they impact fireplace floor strategies.

Extra info for Alkali-Silica Reaction in Concrete

Sample text

This mobility will, of course, depend on the porosity and permeability of the concrete, and this in turn will depend on a number of factors, but perhaps most important among these will be the watercement ratio. 7 Gel reaction product The interaction between alkali and reactive silica in the presence of moisture produces an alkali-silica gel which swells on the absorption of water. This gel varies considerably in composition, depending on the composition of the alkali pore fluids and probably on the nature of the particular form of reactive silica, temperature of reaction and concentration of reactants.

M. (1967) Durability of Concrete Structures in Denmark. Danish Technical Press, Copenhagen. 6 . Asgeirsson, H. ) (1975) Proceedings of a Symposium on Alkali-Aggregate Reaction, Preventive Measures. Icelandic Building Research Institute, Reykjavik. 7 . B. ) (1976) Proceedings of the Third International Symposium on the Effect of Alkalis on the Properties of Concrete. Cement and Concrete Association, Wexham Springs, Slough, UK. 8 . Diamond, S. ) (1978) Proceedings of the Fourth International Conference on the Effects of Alkalis in Cement and Concrete.

There is also evidence that at least under laboratory conditions partially dehydrated silica gel can be rehydrated and will re-expand when additional water is added to the specimen. However, dried gel that has become white and carbonated cannot be reconstituted and is not readily soluble in water. 9 The observed effects of alkali-silica reaction Concrete structures affected by alkali-silica reaction typically show at least one of the following features: cracking, expansion and misalignments of structural elements, gel exudations and spalls referred to as ‘pop-outs’.

Download PDF sample

Rated 4.95 of 5 – based on 24 votes