棉花秸秆超轻粗骨料表面改性的试验研究  

Experimental research on the surface modification of lightweight aggregate from cotton stalk

作　　者：王宣[1] 朱琳[1] 晋强[1] 

机构地区：[1]新疆农业大学水利与土木工程学院,新疆乌鲁木齐830052

出　　处：《新型建筑材料》2016年第5期57-60,共4页New Building Materials

基　　金：国家自然科学基金项目(51268056);国家级大学生创新创业训练计划项目(201410758020);新疆维吾尔自治区高等学校科研计划项目资助(XJEDU2014S021)

摘　　要：摘要：通过对棉花秸秆颗粒表面改性的方式制各超轻粗骨料。采用2种不同的包裹方式和丙烯酸酯防水涂料对棉花秸秆颗粒表面进行改性，利用微观电镜分析包裹效果，确定最佳包裹方式，以吸水率试验来验证表面改性的效果。结果表明，分层包裹比混合包裹效果好，包裹层更薄；丙烯酸酯防水涂料吸附水泥的方式改性效果最好；表面改性后的棉花秸秆超轻粗骨料1h吸水率可以控制在10％～20％。Lightweight aggregate was prepared by surface modification of aggregate from cotton stalk. The surface modification of aggregate from cotton stalk was achieved by means of two different ways of wrapped package and acrylic waterproof coating,ef- ficiency of the package was defined with SEM,and the best package way was chosen. The surface modification effect was validat- ed through water absorbing test. The results show that layered wrapped package has better effect than the mixed package,the wrapping layer is thinner： the way of absorbing cement with acrylate waterproof coating has the best effect. The 1 h water absorp- tion of aggregate from cotton stalk rate after surface modification was 10%~20%.

关 键 词：棉花秸秆 粗骨料 表面改性 吸水率 

分 类 号：TU528.041[建筑科学—建筑技术科学]