Title: Using Metakaolin to Improve Sawdust-Ash Concrete

Author(s): Augustine U. Elinwa, Stephen P. Ejeh, and Ibanga O. Akpabio

Publication: Concrete International

Volume: 27

Issue: 11

Appears on pages(s): 49-52

Keywords: early-age strength; metakaolin; sawdust ash; supplementary cementitious material

DOI:

Date: 11/1/2005

Abstract:
Research has shown that sawdust ash, when used as a supplementary cementitious material, decreases the early strength gain of concrete. In the research presented here, metakaolin was added to sawdust-ash concrete with the objective of improving the slow strength development reported earlier. The results demonstrate that the detrimental effects on early-age strength gain can be counteracted by the addition of small amounts of metakaolin.