THE USE OF CELLULOSE WASTES IN LIGHTWEIGHT CONCRETE: IMPROVEMENT OF PROPERTIES BY ADMIXTURES
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Published:2002
R Jauberthie, C Lanos, I Cisse, S Tamba, F Rendell, 2002. "THE USE OF CELLULOSE WASTES IN LIGHTWEIGHT CONCRETE: IMPROVEMENT OF PROPERTIES BY ADMIXTURES", Challenges of Concrete Construction: Volume 5, Sustainable Concrete Construction: Proceedings of the International Conference held at the University of Dundee, Scotland, UK on 9–11 September 2002, Ravindra K. Dhir, Thomas D. Dyer, Judith E. Halliday
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Rice husk has a pozzolanic quality and can be used in lightweight concrete; additionally its fibrous nature improves flexural strength. Tests were carried out on 40×40×160 mm3 samples of an OPC / rice husk mortar cured for 7 days at 100% RH. Two low cost admixtures intended to improve the physical properties of the material were studied. The first admixture, dune sand, was found to improve compressive strength with an increase in mortar density and reduction in flexural strength. The second admixture, aluminium sulphate acts as a foaming agent. This had the effect of reducing density and increasing the flexural / compressive strength ratio; moreover, further work is required to examine the long term durability.
INTRODUCTION
RICE HUSK MORTAR
ADMIXTURE: DUNE SAND
CHEMICAL ADMIXTURE
CONCLUSIONS
REFERENCES
