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2.8.1 STRENGTH REDUCTION Compressive strength is the major property of hardened concrete and the superfluous quantity of water reduces the compressive strength of concrete. The excess water will not participate in the hydration process and retains in concrete even after hardening. This water will evaporate when exposed to atmosphere and form voids in the concrete. These voids formed are therefore responsible for the reduction of compressive strength of concrete. 2.8.2 DRYING SHRINKAGE Increase in water-cement ratio increases the drying shrinkage and concrete becomes weaker in tensile strength and as a result, cracks will form on the concrete surface. 2.8.3 LOSS OF ABRASIVE RESISTANCE Abrasive resistance of concrete is directly proportional to its strength. When excessive water increases, the strength of the concrete decreases and therefore, the abrasive resistance also reduces. 18PDF Image | concretes that use polymers as a binder
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