石粉含量对机制砂性能影响的试验研究  

Experimental study of aggregate micro fines content on the performance of manufactured fine aggregate

作　　者：王雨利[1] 熊祖强[2] 周明凯[3] 李北星[3] 管学茂[1] 

机构地区：[1]河南理工大学材料科学与工程学院,河南焦作454003 [2]河南理工大学能源科学与工程学院,河南焦作454003 [3]武汉理工大学硅酸盐工程中心教育部重点实验室,湖北武汉430070

出　　处：《河南理工大学学报（自然科学版）》2009年第2期234-238,共5页Journal of Henan Polytechnic University（Natural Science）

基　　金：西部交通建设科技项目(200331881106);河南理工大学博士基金资助项目(B2008-48-648259)

摘　　要：为了更好地研究机制砂对混凝土性能的影响,以福刚石灰岩机制砂和石粉为例,系统地研究了石粉含量对机制砂级配、细度模数、堆积密度(空隙率)的影响.试验结果表明,石粉含量对0.15 mm档的累计筛余和细度模数的影响呈线性关系;石粉含量对机制砂空隙率的影响则可用非均一球形颗粒的填充理论来解释.这不仅有助于更好地研究机制砂对混凝土性能的影响,而且还有助于指导机制砂的生产.In order to have a better study on the effect between nufaetured fine aggregate and the concrete preformance, the effect of AMF content on gradation, modulus of fineness, packing density （void ratio） of MFA was systematically studied in the paper, by the example of Fugang limestone MFA. The results show that there are linear relations exist in AMF content, cumulative residue by 0. 15 mm sieve and fineness modulus. The effect of AMF content on void ratio of MFA is explained by the packing theory of particles with different size, which is benefit not only for study on the effect of MFA on perfornlances of concrete, but also the production of MFA.

关 键 词：机制砂 石粉含量 填充理论 

分 类 号：TU521.2[建筑科学—建筑技术科学]