掺合料对高耐久性清水混凝土外观的影响  

Effect of admixture on appearance of high durable fair-faced concrete

作　　者：谷坤鹏[1] 于福 叶守杰 钟赛 陈克伟[1] 李维洲 何文胜 GU Kun-peng;YU Fu;YE Shou-jie;ZHONG Sai;CHEN Ke-wei;LI Wei-zhou;HE Wen-sheng(CCCC Shanghai Third Harbor Scientific Research Institute Co.,Ltd.,Shanghai 200030,China;No.2 Engineering Company Ltd.of CCCC First Harbor Engineering Company Ltd.,Qingdao 266000,China;Qingdao West Coast Rail Transit Co.,Ltd.,Qingdao 266000,China;China Communications Construction Co.,Ltd.,Beijing 100088,China)

机构地区：[1]中交上海三航科学研究院有限公司,上海200030 [2]中交一航局第二工程有限公司,山东青岛266000 [3]青岛市西海岸轨道交通有限公司,山东青岛266000 [4]中国交通建设股份有限公司,北京100088

出　　处：《水运工程》2018年第10期63-67,共5页Port & Waterway Engineering

摘　　要：针对海洋环境下高耐久性清水混凝土外观缺陷问题,进行混凝土的圆桶及方模试验,研究掺合料对其外观的影响。结果表明,单掺矿粉的清水混凝土表面气泡较多,且直径较大;双掺矿粉和粉煤灰的清水混凝土的色泽会偏黑,偏暗;双掺矿粉和石粉的清水混凝土表面有较多大直径气泡;而双掺矿粉和硅粉的清水混凝土,色泽较为明亮均匀、气泡较少且气泡尺寸较小,整体均匀性在双掺体系中最好;三掺矿粉、粉煤灰和硅粉的清水混凝土,相对于所有其他系列的清水混凝土,外观改善情况最好,整体色泽均匀明亮,且气泡较少,将其应用于某海洋环境下清水混凝土工程,效果良好。According to the appearance of defects in marine environment of high durability fair-faced concrete,we carry out the drum and square model test,and study the effect of admixture on the appearance of fair-faced concrete.The results show that the fair-faced concrete with slag has more surface bubbles and larger diameter.The color of fair-faced concrete with slag and fly ash is black and dark.The bubble situation of the concrete with slag and stone powder is the same as that mixed the slag only.The concrete with slag and silicon powder has more color bright uniform,less bubble and smaller bubble size,and the overall uniformity is the best in double doped system.Compared with all other series of concrete,the concrete with slag,fly ash and silica fume has the best appearance,the color is bright and uniform,and the bubble is less.We apply the last kind of concrete to a marine environment under water concrete engineering,which achieves a good result.

关 键 词：掺合料 清水混凝土 高耐久性 外观 

分 类 号：TU528[建筑科学—建筑技术科学] U654[交通运输工程—港口、海岸及近海工程]