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| 特性环境对水泥砂浆硫酸盐侵蚀类型的影响 | |
| 引用本文： | 马保国,罗忠涛,李相国,高小建,张美香.特性环境对水泥砂浆硫酸盐侵蚀类型的影响[J].硅酸盐学报,2007,35(11):1561-1566. |
| 作者姓名： | 马保国 罗忠涛 李相国 高小建 张美香 |
| 作者单位： | 1. 武汉理工大学,硅酸盐材料工程教育部重点实验室,武汉,430070 2. 哈尔滨工业大学,土木工程学院,哈尔滨,150006 3. 湖北华新水泥股份有限公司技术中心,湖北,黄石,435002 |
| 摘 要： | 研究了硫酸盐种类(Na2SO4,MgSO4)及温度(5 ℃,20 ℃)等影响因素对水泥砂浆硫酸盐侵蚀类型的影响,以明确碳硫硅酸钙型硫酸盐侵蚀的特性环境条件.试验结果表明:掺加石灰石粉的水泥砂浆试件置于5% MgSO4溶液、5 ℃及20 ℃温度环境下浸泡450 d后,均能生成碳硫硅酸钙.而一般水泥砂浆试件置于5% Na2SO4溶液、5 ℃及20 ℃温度环境浸泡侵蚀后,未生成碳硫硅酸钙.证明水泥混凝土在＞15 ℃的硫酸盐侵蚀环境下亦可生成碳硫硅酸钙,而Mg2 的存在对碳硫硅酸钙的形成过程具有加速催化作用. |
| 关 键 词： | 水泥砂浆 硫酸盐侵蚀 特性环境 碳硫硅酸钙 cement mortars sulfate attack characteristic environment thaumasite |
| 文章编号： | 0454-5648（2007）11-1561-06 |
| 修稿时间： | 2007-05-12 |
INFLUENCE OF ENVIRONMENTAL CHARACTERISTICS ON SULFATE ATTACK TYPES OF CEMENT MORTARS |
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| MA Baoguo,LUO Zhongtao,LI Xiangguo,GAO Xiaojian,ZHANG Meixiang.INFLUENCE OF ENVIRONMENTAL CHARACTERISTICS ON SULFATE ATTACK TYPES OF CEMENT MORTARS[J].Journal of The Chinese Ceramic Society,2007,35(11):1561-1566. | |
| Authors: | MA Baoguo LUO Zhongtao LI Xiangguo GAO Xiaojian ZHANG Meixiang |
| Abstract: | The influence of environmental factors with different sulfate types (Na2SO4, MgSO4) and temperatures (5, 20 ℃) on various kinds of sulfate attack of cement mortars was studied, and the special environmental factors for the formation of thaumasite were confirmed. The experimental results show that after immersion for 450 d, the samples including limestone exposed to 5％ MgSO4 solution at 5 ℃ and 20 ℃ both could produce thaumasite. However, thaumasite could not be found in the samples without limestone exposed to 5％ Na2SO4 solution at 5 ℃ and 20 ℃. This proves that concrete can produce thaumasite in a sulfate environment over 15 ℃, and the existence of Mg2+ can accelerate the formation of thaumasite. |
| Keywords: | cement mortars sulfate attack characteristic environment thaumasite |
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