Investigations on the Long-Term Durability of Hydrophobic Treatments on Concrete
Investigations on the Long-Term Durability of Hydrophobic Treatments on Concrete
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DOI：
10.14359/12699
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发表时间：
2003-06
期刊：
影响因子：
--
通讯作者：
M. Raupach;L. Wolff
中科院分区：
文献类型：
--
作者：
M. Raupach;L. Wolff
对混凝土表面进行补充疏水处理是一种持久有效的方法，可以降低混凝土的含水率，并通过抑制侵蚀性物质的迁移以及减缓腐蚀过程来提高其耐久性。本文对各种疏水剂在不同类型混凝土上的效能和长期耐久性进行了对比试验。采用多环电极传感器监测疏水处理的有效性和耐久性，通过测量混凝土的电解电阻率来指示混凝土在不同深度的湿度变化。结果表明，施加剂量对疏水处理的耐久性和效率影响最大。其他因素，如活性成分、活性剂类型或渗透深度，只有次要的影响。
Supplementary hydrophobic treatment of concrete surfaces can be a durable and potent means of lowering the moisture content of the concrete and improve its durability by inhibiting the migration of aggressive substances as well as slowing down the corrosion process. In this work, comparative tests were conducted on the efficiency and long-term durability of various hydrophobic agents on different concrete types. The effectiveness and durability of the hydrophobic treatment was monitored by a multiring-electrode sensor, which indicates the variation of humidity of the concrete in different depths through measurement of its electrolytic resistivity. Results show that the applied dosage on the specimens influenced the durability and efficiency of the hydrophobic treatment the most significantly. Other factors, such as active content, type of active agent, or penetration depth, have only a subordinate influence.