人工砂高云母石粉对抗冲磨混凝土性能影响研究  

Effect of Mica-rich Stone Powder Contained in Manufactured Sand on the Properties of Abrasion Resistance Concrete

作　　者：李新宇[1] 谢国帅[1] 任金明[1] 邢界泉 

机构地区：[1]中国电建集团华东勘测设计研究院有限公司,浙江杭州310014 [2]浙江大学建筑工程学院,浙江杭州310058

出　　处：《水力发电》2016年第2期106-110,共5页Water Power

基　　金：国家自然科学基金青年基金资助项目(51209219)

摘　　要：通过控制人工砂中石粉含量,系统研究了高云母石粉对抗冲磨混凝土性能的影响规律。结果表明,在一定范围内,随着人工砂中高云母石粉含量的增加,抗冲磨混凝土单位用水量有所增加,抗压强度与劈拉强度呈现先增加后减小的趋势,但变化幅度相对较小;人工砂中高云母石粉含量对于抗冲磨混凝土早龄期干缩值影响相对较小,对于长龄期干缩值却有较大幅度影响;人工砂中高云母石粉含量与混凝土抗冲磨强度呈现明显的线性负相关关系。适当控制人工砂中高云母石粉含量在一定程度上有利于提高抗冲磨混凝土性能。The effects of mica-rich stone powder contained in manufactured sand on the properties of abrasion resistance concrete are systematically studied by controlling the content of stone powder. The test results show that, （a） the unit water use of abrasion resistance concrete will increase while its compressive strength and splitting strength changes slightly with the increase of mica-rich stone powder content; （b） the effect of mica-rich stone powder on the early-age shrinkage of abrasion resistance concrete is negligible while its long-age shrinkage value increase as the increase of mica-rich stone powder content; and （e） the abrasion resistance strength of concrete shows a strong negative linear correlation in terms of mica-rich stone powder content. Maintaining the content of mica-rich stone powder in a proper range will partly contribute to improve the properties of abrasion resistance concrete.

关 键 词：人工砂 高云母石粉 抗冲磨混凝土 干缩 抗冲磨强度 

分 类 号：TV431[水利工程—水工结构工程]