The volcanic rock coarse aggregate has the characteristics of low density,high porosity and strong water absorption.If the coarse volcanic aggregate is not treated,it will have a great influence on the performance of both freshly mixed concrete and hardened concrete when applied to concrete.After the volcanic rock coarse aggregate was modified by polymer modification,the properties such as soundness,water absorption and water reducing agent ad-sorption have been significantly improved.the rheological properties,workability,compressive strength and chloride penetration resistance of the modified volcanic rock coarse aggregate concrete are greatly improved.The properties are the same as ordinary crushed stone concrete.
ConcreteVolcanic Rock Coarse AggregatePolymer ModificationCompressive StrengthRheological PropertyChloride Diffusion Coefficient
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万方数据
