Report BR 216 Durability of pfa concrete

Publication Year

1994

Document Status

Current

Abstract

Principally concerned with the results from a laboratory study on the effects of curing on the durability of concretes containing pulverised-fuel ash (pfa). The Building Research Establishment has been carrying out an extensive laboratory research programme into the durability of pfa concrete for more than 10 years. This has produced considerable information on the strength of pfa concrete and durability properties including permeability, carbonation, alkali-silica reaction and attack by sulphates, acid and frost. Although it is recognised that adequate curing is essential for all concrete if the potential properties of the concrete are to be fully realised, it has been suggested that pfa concrete may be more sensitive to curing due to it slower development of properties compared with ordinary Portland cement (OPC) concrete. This study set out to establish the response of the strength and durability of OPC and pfa concretes to a range of curing conditions representative of the treatment concrete may receive on site. Design of concrete mixes. the objective of this study was, specifically, to determine the effect of curing time and temperature on the durability of pfa concrete. It was considered, therefore, desirable to compare concretes (with and without pfa) that would be expected to be of equal durability when adequately cured.

Author

Thomas, M. D. A. and Matthews, J. D.

ISBN

9780851255200

Publisher Information