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CAER Seminars

Coal/Biomass Fly In Concrete: Strength, Durability and the Underlying Kinetics and Mechanisms

Speaker:
Shuangzhen Wang
Advanced Carbon Research Center
Brigham Young University
Provo, Utah

Date:
Tuesday, November 28, 2006 10:30am
Ben Bandy Conference Center
UK Center for Applied Energy Research

Abstract:
Biomass fly ash is excluded from addition in concrete by ASTM C 618. This project studied the performances of biomass fly ash in concrete (partial cement replaced by ash) in related to strength build up, freezing and thawing, rapid chloride permeability, mitigation of Alkali Silica Reaction (ASR) expansion and the strength build up& quantitative kinetics of fly ash-calcium hydroxide system (no cement) and compared them with coal fly ash.

The results have shown that, in related to the comprehensive concrete properties investigated, five types of biomass fly ash have equal or much better performances than two types of coal fly ash; therefore, addition of biomass fly ash in concrete should be widely explored instead of being prohibited simply because of its non coal origin.

Numerous publications have been produced from this project: 1) six conference papers and one magazine article have been published; 2) three journal papers have been submitted to Fuel; 3) three / four more journal papers will be submitted; and 4) seven professional presentations will / have been given.