摘要
随着生产技术和施工工艺的进步,强度等级为LC60以上的轻骨料混凝土制备技术逐步成熟,采用四种不同堆积密度的碎石和圆球型膨胀页岩陶粒,对其物理性能进行了研究,设计了21组配合比试验方案,系统分析了骨料、水胶比、纤维对其力学性能的影响,得到了强度等级为LC40、LC50、LC60的最优配合比。研究表明:碎石型陶粒为制备高强轻骨料混凝土的最优骨料,0.26的水胶比可使混凝土强度达到70 MPa,纤维起到了良好的阻裂作用。
With the advancement of production technology and construction craft, the manufacturing technology of lightweight aggregate concrete with strength grade above LC60 is becoming mature. By using gravel and round type shale ceramsite with four different bulk densities, through making researches on the physical feature, the experimental program of 21 pairs of mixture was designed, and the influence of aggregate, water-binder ratio and fiber on the mechanical property was systematically analysised. The premium mixture of LC40, LC50, LC60 was gained. According to researches, gravel type ceramsite is the best aggregate. What is more, water-binder ratio of 0.26 can make the concrete compressive strength reach 70 MPa, and fiber plays a good role of rip-resistance.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2016年第7期2002-2006,2013,共6页
Bulletin of the Chinese Ceramic Society
基金
国家自然科学基金项目(51578072
5578077)
陕西省科技统筹创新工程计划项目(2015KTZDSF03-04)
陕西省自然科学基金(2016JM5070)
中央高校基本业务费(310828163410
310828161006)
关键词
高强轻骨料混凝土
骨料
水胶比
纤维
抗压强度
high-strength lightweight aggregate concrete
aggregate
water-binder ratio
fiber
compressive strength
