The use of fly ash in concretes subject to heat

The influence of fly ash on the basic characteristics of lightweight and ordinary concretes subject to heat treatment has been studied. The use of fly ash increases the strength of lightweight concretes, reduces cement consumption by 15 to 25%, and permits a decrease in concrete mean density (by 100...

Full description

Saved in:
Bibliographic Details
Published in:Cement and concrete research 1991, Vol.21 (2), p.205-218
Main Authors: Leshchinsky, M.Yu, Velichko, V.A., Leshchinsky, A.M.
Format: Article
Language:English
Subjects:
Applied sciences
Buildings. Public works
Concretes. Mortars. Grouts
Exact sciences and technology
Materials
Properties and performance tests of mortar and hardened concrete
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The influence of fly ash on the basic characteristics of lightweight and ordinary concretes subject to heat treatment has been studied. The use of fly ash increases the strength of lightweight concretes, reduces cement consumption by 15 to 25%, and permits a decrease in concrete mean density (by 100 kg/m 3 on the average) and heat conduction. In ordinary concretes, the reduction of cement consumption is 40 to 70 kg/m 3, while increasing absolute and relative strength values after heat treatment. The latter is, on the average, 85% from the concrete strength at the age of 28 days. The role of fly ash as a polyfunctional ingredient which performs the functions of aggregate, active mineral admixture, plasticizer, and microfiller is also demonstrated.
ISSN:0008-8846
1873-3948
DOI:10.1016/0008-8846(91)90001-X