中山大学学报（自然科学版）2009，Vol.48Issue(z2)：20-22,3.
再生骨料混凝土耐久性能影响因素研究
Influence Factors of Durability of the Recycled Aggregate Concrete
摘要
Abstract
Compared with natural aggregate, simply-crushed recycled aggregate particles are attached by many hardened cement mortar remains on its surface, and micro-cracks are formed in the crushing process. Therefore, simply-crushed recycled aggregate concrete re-quests greater water demand which in turn leads to larger shrinkage, greater chloride ion permeability coefficient, quicker carbonization and lower freezing-thawing resistance. Nevertheless, particle reshaping is able to remove the adherent mortar and makes aggregate par-ticle smoother and stronger. The paper presents experimental researches on recycled concrete durability influences by particle-shaping. The results indicate that it reduces the water demand and the corresponding shrinkage, and herein improves the resistance to chloride ion permeability, carbonization property and freezing-thawing resistance. Consequently, the application domain of recycled concrete will be developed.关键词
再生骨料/简单破碎/颗粒整形/耐久性Key words
recycled aggregate concrete/simply-crushed/particle shaping/durability分类
建筑与水利引用本文复制引用
高嵩,李秋义,陈建珍..再生骨料混凝土耐久性能影响因素研究[J].中山大学学报（自然科学版）,2009,48(z2):20-22,3.基金项目
国家"十一五"科技支撑计划重点基金资助项目(2006BAJ02B0504) （2006BAJ02B0504）
