Effect of Calcium chloride on the hydration characteristics of blended cement pastesMaha Rabea Abu-Serea ; E. A. Kishar ; D. A. Ahmed
AbstractEffect of CaCl2 on the hydration characteristics of the different cement pastes using ordinary Portland cement (OPC) and blended Portland cement with ground clay bricks (GCB) or metakaolin (MK) was studied. Various mixes were prepared using a water/solid ratio (W/S) 0.25 (by weight). Three ratios of CaCl2 (0.25, 0.50 and 0.75% by weight of the solid binder) are used; the CaCl2 used was dissolved in the mixing water. The hydration characteristics of the different mixes are tested via determination of the combined water content, phase composition, compressive strength, total porosity (P%) and X-ray diffraction analysis (XRD) at different time intervals up to 180 days. The results showed that calcium chloride accelerates cement hydration in all systems studied. Ten% GCB in the presence of 0.50% CaCl2 is the optimum ratio which has the higher compressive strength.
|Keywords||Blended Portland cement, Calcium chloride, Ground clay bricks, Cement hydration||Issue Date||2013||Journal||Beni-Suef University Journal of Applied Sciences, 2(1), 29-43 (2013)||URI||http://research.asu.edu.eg/handle/123456789/155799|
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