Basalt as Pozzolana and Filler in Ordinary Portland Cement | Science Publications

American Journal of Engineering and Applied Sciences

A. M. Habboud¹  I. M. Helmy¹  Randa M. Osman¹  H. El-Didamony¹ 

关键词: Basalt;    Pozzolana;    Compressive Strength;    DTA;    XRD;   

DOI  :  10.3844/ajeassp.2015.263.274

学科分类：工程和技术（综合）

来源: Science Publications

【 摘 要 】

Pozzolanais defined as a siliceous or siliceous and aluminous materials which in itself possesslittle or no cementing properties, but will ina finally divided form and in the presence of moisture react with Ca(OH)₂at ordinary temperature to form compound possessing cementious properties.Pozzolanic cement contains Portland cement as one of their main components inaddition to natural or industrial by products. These include slag, fly ash,homra, silica fumes, rice husk ash, etc. The aim of the present investigationis to study the effect of fresh basalt on the properties of ordinary Portlandcement pastes. The rate of hydration was studied from the determination of freelime, combined water and insoluble residue up to 90 days of hydration. Thephysico-mechanical properties such as bulk density, apparent porosity andcompressive strength of the hardened cement pastes were determined. The resultsrevealed that the water of consistency increases with the basalt contentwhereas the setting time was slightly elongated. On the other side, thecombined water increases with the basalt content and curing time. This ismainly due to the effect of nucleating of basalt as filler. The addition of 20 wt%basalt gives the higher compressive strength of the cement pastes in comparisonto OPC and cement pastes containing 5, 10 and 15 wt% basalt at all curing times.

【 授权许可】

Unknown