Over time, cases of collapsing buildings have increased. Mavoko water from Ukambani region of Kenya is prone to a combination of several salts attributed to decreasing concrete stability. This study aimed at analyzing the extent by which this water affects concrete compressive strength, soundness and setting time. Ordinary Cement (OPC) and Pozzolanic Portland Cement (PPC) containing 20% filler (PPC-1) and 30% filler (PPC-2) were moulded using different water samples and their setting time, strength and soundness monitored. The results proved Mavoko water retarded concrete compressive strengths, increased soundness and fluctuated setting times. Concrete expansion increased by 2.5mm. Download
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