| 改性硼酸延缓硫铝酸盐水泥的凝结 |
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| 引用本文： | 杜鹏,叶正茂,程新.改性硼酸延缓硫铝酸盐水泥的凝结[J].济南大学学报(自然科学版),2011,25(2):115-118. |
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| 作者姓名： | 杜鹏 叶正茂 程新 |
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| 作者单位： | 济南大学,材料科学与工程学院,山东,济南,250022 |
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| 基金项目： | 国家重点基础研究发展计划(973)，山东省自然科学基金，山东省高等学校科技计划 |
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| 摘 要： | 复掺硼酸和硫酸铝研制新型硫铝酸盐水泥缓凝剂。采用扫描电子显微镜(SEM)分析新型缓凝剂和硫酸铝对硫铝酸盐水泥的缓凝效果和力学性能的影响。结果表明:掺入w=0.3%的硼酸,硫铝酸盐水泥初凝时间为296 min,终凝时间为361 min;复掺w(硼酸)=0.3%,w(硫酸铝)=0.5%,初凝和终凝时间降为113 min和168 min,继续增加硫酸铝掺量,凝结时间会进一步降低,对前期强度无不利影响,且后期强度升高。单掺硫酸铝对硫铝酸盐水泥有促凝作用,但强度略有下降。
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| 关 键 词： | 硫铝酸盐水泥 硼酸 硫酸铝 缓凝剂 |
Modified Boracic Acid Retarding the Set of Sulphoaluminate Cement |
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| DU Peng,YE Zheng-mao,CHENG Xin.Modified Boracic Acid Retarding the Set of Sulphoaluminate Cement[J].Journal of Jinan University(Science & Technology),2011,25(2):115-118. |
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| Authors: | DU Peng YE Zheng-mao CHENG Xin |
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| Institution: | DU Peng,YE Zheng-mao,CHENG Xin(School of Material Science and Engineering,University of Jinan,Jinan 250022,China) |
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| Abstract: | A new type of retarder,of which main ingredients are boracic acid and aluminum sulphate,was developed for sulphoaluminate cement.The influence of the new type of retarder and aluminum sulphate on the retarding effect and the mechanical property of sulphoaluminate cement was analyzed by SEM.Experimental results show that adding 0.3% mass fraction of boracic acid,the initial setting time of sulphoaluminate cement is 296min,and the final setting time is 361min;adding 0.3% mass fraction of boracic acid and 0.5%... |
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| Keywords: | sulphoaluminate cement boracic acid aluminum sulphate retarder |
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