| 苯丙乳液改性砂浆的优化配比及其性能研究 |
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| 引用本文： | 邢小光,许金余,白二雷,王谕贤.苯丙乳液改性砂浆的优化配比及其性能研究[J].硅酸盐通报,2018,37(4):1174-1180. |
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| 作者姓名： | 邢小光 许金余 白二雷 王谕贤 |
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| 作者单位： | 空军工程大学机场建筑工程系,西安,710038;空军工程大学机场建筑工程系,西安 710038;西北工业大学力学与土木建筑学院,西安 710072 |
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| 摘 要： | 针对工程渗漏、混凝土修补问题,研究了苯丙乳液对水泥砂浆的改性效果.结果表明:砂浆中加入苯丙乳液能够提高抗折强度、抗拉强度和粘结强度,分别提高最大为42.8%、61.8%和1.91 MPa;苯丙乳液对砂浆吸水率影响十分显著,乳液掺量越大,吸水率越小;苯丙乳液能够改善砂浆的抗冻性、抗渗性、抗碳化性、耐腐蚀性和收缩率;龄期42 d,改性砂浆的收缩量减少13.6%;改性砂浆的透水压力为2.4 MPa,提高0.9 MPa;改性砂浆的氯离子渗透高度减少13.6%,且乳液掺量越大,氯离子的渗透高度越小.
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| 关 键 词： | 苯丙乳液 力学性能 耐久性 改性机理 |
Optimum Proportion and Performance of Styrene-acrylic Emulsion Modified Mortar |
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| XING Xiao-guang,XU Jin-yu,BAI Er-lei,WANG Yu-xian.Optimum Proportion and Performance of Styrene-acrylic Emulsion Modified Mortar[J].Bulletin of the Chinese Ceramic Society,2018,37(4):1174-1180. |
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| Authors: | XING Xiao-guang XU Jin-yu BAI Er-lei WANG Yu-xian |
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| Abstract: | In order to solve the problems of engineering seepage and concrete repair, the modified effect of styrene acrylic emulsion on cement mortar was studied.The results show that styrene acrylic emulsion can improve the flexural strength, tensile strength and bond strength of mortar, and the maximum increase is 42.8%,61.8%and 1.91 MPa respectively.The influence of styrene acrylic emulsion on the water absorption rate of mortar is obvious.The greater the amount of emulsion is, the smaller the water absorption rate is.Styrene acrylic emulsion can improve the frost resistance, impermeability, carbonization resistance,corrosion resistance and shrinkage of mortar.The age of 42 d,the shrinkage of modified mortar is 13.6%less than that of ordinary mortar.The seepage pressure of the modified mortar is 2.4 MPa,increasing by 0.9 MPa.The chloride penetration of modified mortar was reduced by 13.6%. And the greater the amount of emulsion is,the smaller the permeability of chloride ion is. |
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| Keywords: | styrene-acrylic emulsion mechanical property durability modification mechanism |
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