Alkali-aggregate reaction

Alkali-aggregate reaction

de Rooij, M.R.
Godart, B.

2013

Alkali-aggregate reaction in concrete is the name given to a group of reactions leading to expansion caused by a chemical reaction between the alkalis contained in the cement paste and certain reactive forms of (usually silica containing) minerals in the aggregates, see Figure 4.The alkalis in the pore solution are derived from the hydration of the cement but may be augmented by alkalis in some aggregates or alkaline salts from the environment [5]. One characteristic consequence of AAR, in the presence of sufficient moisture, is variable expansions. The expansion may cause extensive cracking of the concrete, especially if it is not restrained, leading to various forms of structural damage and durability problems. Maintenance costs of the structure tend to increase and the service life can become reduced

Building Engineering & Civil Engineering
SR - Structural Reliability
TS - Technical Sciences
Buildings and Infrastructure
Materials
Built Environment

http://resolver.tudelft.nl/uuid:2236017b-83c5-4136-aa12-a832f33acb2f

473656

Springer Verlag, Berlin Heidelberg

9789400765665

Guide to diagnosis and Apprisal damage to concrete in structures, 13-18

RILEM State-of-the-art Reports

bookPart