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Studies of alkali-silica reaction. Part 7. Modelling of expansion

✍ Scribed by S. Chatterji; P. Christensen


Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
297 KB
Volume
20
Category
Article
ISSN
0008-8846

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✦ Synopsis


It has been shown that expansion of mortar prisms, due to alkali-silica reaction, can be quantitatively related to their environment, i.e. alkali ion concentration and temperature by an equation of the type

The physical significance of negative signs of dl/dC and dl/dT terms have been discussed. This relation permits a rational choice of aggregates for a given environment.


πŸ“œ SIMILAR VOLUMES


Studies of alkali-silica reaction β€” part
✍ A.D. Jensen; S. Chatterji; P. Christensen; N. Thaulow πŸ“‚ Article πŸ“… 1984 πŸ› Elsevier Science 🌐 English βš– 475 KB

From an extensive petrographic investigation of concrete samples suffering from alkali-silica reaction, it has been hypothesized that a deliberately introduced air-bubble system will reduce expansion due to alkali-silica reaction. The above hypothesis has been tested using mortar bars made from 35 s

Studies of alkali-silica reaction: Part
✍ H. Strunge; S. Chatterji; A.DamgΓ₯rd Jensen πŸ“‚ Article πŸ“… 1991 πŸ› Elsevier Science 🌐 English βš– 255 KB

Recently a method for the detection of alkali-silica reactivity of sand has been proposed. In this method sand is digested in a mixture of Ca(OH)2 and saturated KCl for 24 hours. The OH ion concentration is determined by titration. The OH ion concentration for a control mixture without sand is deter

Studies of alkali-silica reaction, part
✍ S. Chatterji; N. Thaulow; A.D. Jensen πŸ“‚ Article πŸ“… 1988 πŸ› Elsevier Science 🌐 English βš– 244 KB

In this paper various practical implications of a recently proposed alkali-silica reaction mechanism have been expressed in a coherent fashion. Aspects of alkali-silica reaction considered are: long latency, sources of alkalies, relative aggressivity of sodium and potassium ions, reduction of expans