外掺粉煤灰天然轻骨料混凝土早期力学性能研究  

Experimental Study on Early Mechanical Properties of Natural Lightweight Aggregate Concrete with External Mixing Fly Ash

作　　者：韩俊涛[1] 申向东[1] 

机构地区：[1]内蒙古农业大学,呼和浩特010018

出　　处：《硅酸盐通报》2012年第4期847-851,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(No.10762002);内蒙古自治区自然科学基金项目(2009MS0705)

摘　　要：以天然浮石作为粗骨料,通过外掺法分别掺加0%、20%、30%和40%体积的粉煤灰替代相同体积的砂,配置轻骨料混凝土。通过对混凝土在3 d、14 d、28 d的抗压强度,以及28 d的弹性模量与轴心抗压强度的研究,得出天然浮石轻骨料混凝土外掺粉煤灰最优掺量为30%。浮石轻骨料混凝土在此掺量下,不仅改善了混凝土的和易性,而且提高了基本力学性能。With natural pumice as coarse aggregate, through external addition method by mixing respectively 0%, 20%, 30% and 40% of the volume of fly ash replacement the same volume of sand, the configuration of lightweight aggregate concrete. Study of concrete in the 3 d, 14 d, 28 d compressive strength , and 28 d of the elastic modulus, axial compressive strength, come to a natural pumice lightweight aggregate concrete outside the concrete at this dosage mechanical properties. optimal , not only to improve the dosage of fly ash is 30%. Pumice lightweight aggregate workability of concrete, but also to improve the basic

关 键 词：浮石混凝土 粉煤灰 外掺法 抗压强度 弹性模量 

分 类 号：TU528[建筑科学—建筑技术科学]