【摘要】 本文研究了再生骨料取代率对混凝土坍落度、抗压强度和抗冻性的影响。结果表明,再生骨料混凝土粘聚性保水性良好,随着再生骨料取代率的提高,混凝土坍落度逐渐降低,抗压强度亦逐渐降低,混凝土相对动弹性模量降低、质量损失增大,掺加引气剂的再生骨料混凝土抗冻耐久性可达到F300的要求。更多还原

【Abstract】 This paper studies the effect of the replacement ratio of recycled aggregate on the slump,compressive strength and frost resistance of concrete. The results show that the recycled aggregate concrete has good cohesion and water retention, along with the increase of the replacement rate of recycled aggregates, the slump of concrete gradually decreases, the compressive strength gradually decreases, and the relative dynamic elastic modulus of concrete decreases, and the mass loss increases. The frost resistance of recycled aggregate concrete with air-entraining agent can meet the requirements of F300.更多还原