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Alkali-aggregate reaction in Nova Scotia I. Summary of a five-year study

✍ Scribed by M.A.G. Duncan; E.G. Swenson; J.E. Gillott; M.R. Foran

Book ID
107727854
Publisher
Elsevier Science
Year
1973
Tongue
English
Weight
709 KB
Volume
3
Category
Article
ISSN
0008-8846

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Alkali-aggregate reaction in Nova Scotia
Alkali-aggregate reaction in Nova Scotia II. Field and petrographic studies
✍ M.A.G. Duncan; J.E. Gillott; E.G. Swenson πŸ“‚ Article πŸ“… 1973 πŸ› Elsevier Science 🌐 English βš– 511 KB

Certain siliceous and sedimentary rocks in Nova Scotia, when used as aggregate with high alkali cement, have produced excessive expansion of concrete. Laboratory studies showed a type of alkali-aggregate reaction to be responsible. Rock types in structures and in aggregate sources were identified by

Alkali-aggregate reaction in nova scotia
Alkali-aggregate reaction in nova scotia III. Laboratory studies of volume change
✍ M.A.G. Duncan; E.G. Swenson; J.E. Gillott πŸ“‚ Article πŸ“… 1973 πŸ› Elsevier Science 🌐 English βš– 645 KB

Studies of alkali-expansivity of Nova Scotia rock types included extensive length change tests of mortar bars and concrete prisms, and also rock cylinders immersed in alkali solution. The effects of such variables as alkali content, type of alkali, temperature, wet and dry cycling, anisotropy, opti

A discussion of the paper β€œalkali-aggreg
A discussion of the paper β€œalkali-aggregate reaction in Nova Scotia - character of the reaction”
✍ P.K Mehta πŸ“‚ Article πŸ“… 1974 πŸ› Elsevier Science 🌐 English βš– 208 KB

The authors have presented an interesting mechanism based on their laboratory studies on the expansion of phyllitic rocks due to alkali-aggregate reaction. In an investigation described below the writer found similar results. In proposing a mechanism of expansion, the authors suggested that it is si