Investigation on the effect of mixing water in cement mortar performance
Loading...
Date
2014-07-30
Authors
Munyao, Onesmus Mulwa
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Mixing water is very vital for development of concrete and/or mortar. It can also be a source of
aggressive ions in the cured concrete/mortar. The study will investigate the effect of mixing
water on performance of mortar made from selected Ordinary Portland Cement (OPC) and
Portland Pozzolana Cement (PPC). Cement from three different companies will be used while
mixing water will be sampled from five different localities with potential aggressive ions to
cement mortar or concrete. The localities to be selected for water sampling will be areas with
either CI-, S042-, Mg2+, alkalis or with high salt levels. The water samples will include borehole
water, industrial waste water, runoff water, and river water. Cement mortar will be made using
the sampled water vis a vis tap and distilled water and cured in accordance to Kenya Standard
KS EAS 18: 2008. Compressive strength will be determined at 2nd, 7th, 28th and 90th day of
curing. Setting time, soundness, pozzolanic activity, pore water pH and alkali content will also
be investigated. Data will be statistically analyzed.