Abstract
The purpose of this report is to study the use of waste brick as an additive for Portland cement, in which 5, 10, 15 and 20% (by weight) of Portland cement is substituted by waste brick. The specimens are subsequently hardened for a period of 7, 28, 90 and 180 days under curing with the condition of distilled water, groundwater and seawater. The waste brick additives prompt the initial hydration of Portland cement and promote the hydration reaction. In the next stage of hardening (after 28, 90 and 180 days of hydration), waste brick supplement (up to 20 wt.%) enhances the compressive strength of the specimens, illustrating this effect as the development of calcium silicate hydrates. It is to be mentioned that waste brick activates the hydric properties of Portland cement. In the initial stages, additional seawater promotes cement hydration and, in the later stage, retards the same.
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