摘要
研究通过改进水工混凝土抗冲磨（水下钢球法）两个试验参数,第一个是冲磨介质钢球的形貌,将现行规范中圆形表面光滑的钢球形貌,改为带有尖角的圆形六面体;第二是调整了钢球的级配及数量.通过对比试验表明：与现行规范方法相比,改进后方法对于高强混凝土,其磨损率提高一倍及抗冲磨强度减少一半,磨损后试件表面严重磨损,平均磨损深度从2～4 mm增加到10～35 mm,反映了混凝土本体而非表层的抗冲磨性能,磨损效果显著提高,更能反映C40以上高性能抗冲磨混凝土的磨损速度和抗冲磨强度.
An experimental study is made through improved hydraulic concrete abrasion of two test parameters,the first is the washed morphology of grinding media balls.The existing norms of the ball round smooth surface morphology,replaced with rounded comers hexahedral.The second is to adjust the gradation of the ball and quantity.A contrastive test shows that：compared with the existing norms,the improved method for high-strength concrete,the wear rate and doubling halving abrasion strength,wear,excessive wear surface after the test,the wear effect increased significantly,the average depth of wear from 2～4 mm to 20～35 ram,reflect the surface of the concrete body not abrasion resistance,better reflect the actual These conditions C40 high performance concrete abrasion wear rate and abrasion strength reflects the actual project wear better.
出处
《中国农村水利水电》
北大核心
2014年第4期126-128,共3页
China Rural Water and Hydropower
基金
新疆维吾尔自治区公益性科研院所基本科研业务经费资助项目(KY2013072)
水利部公益性行业科研专项经费项目(201201037)
关键词
抗冲磨混凝土
水下钢球法
抗冲磨强度
抗压强度
abrasion resistant concrete
steel ball method under water
abrasion resistance
compressive strength
