水泥基材料表面渗透防护试验研究  

Experimental Study on Cement-based Material Surface Permeability Protection

作　　者：章岩[1,2] 王起才[1] 张忠元[3] 李韶瑜[3] 彭峰[4] 

机构地区：[1]兰州交通大学土木工程学院,甘肃兰州730070 [2]西南科技大学先进建筑材料四川省重点实验室,四川绵阳621010 [3]国家电网甘肃省电力公司,甘肃兰州730000 [4]西南科技大学四川省非金属复合与功能材料重点实验室--省部共建国家重点实验室培育基地,四川绵阳621010

出　　处：《兰州交通大学学报》2014年第3期176-182,共7页Journal of Lanzhou Jiaotong University

基　　金："十二五"国家科技支撑计划项目(2012BAJ20B04);国家电网甘肃省电力公司研究开发项目(5227221350BW);西南科技大学科研基金(11zx7148)

摘　　要：水是环境中有害离子对水泥基材料构成侵害的载体,提高抗水性能就可提高抗有害离子侵蚀性能,渗透防护材料区别于在水泥基材料表面附加厚质防护涂层的传统手段,通过基材表面渗透,可在基材表层形成拒水防护层,以达到提高其抗水载有害离子侵蚀的能力的目的.研究结果表明,经研制出的有机硅类表面防护材料处理,可使水泥基材料的表面实现"超防水"效果,经防护处理后的水泥砂浆试块表面吸水率可降低28.7倍.Harmful ions in environment can invade cement-based materials by the carrier of water, so improving the water resistance of the surface can improve anti-corrosion properties of harmful ions.Penetration protective material,which is different from the traditional means of additional thick protective surface coating,penetrates the surface of the substrate materials and forms water-repellent protective layer on the substrate surface so as to achieve the purpose of improving its anti-erosion ability to water containing harmful ion.The research results show that the surface of the cement-based materials achieves ＆quot;super water-repellent＆quot;effect and the surface water absorption of cement mortar test block is reduced 28.7 times after processed by the silicone surface protection materials prepared.

关 键 词：水泥基材料 表面 防护 渗透 超防水 耐久性 

分 类 号：TU528.33[建筑科学—建筑技术科学]