| 抗裂水泥对混凝土性能的影响研究 |
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| 引用本文： | 宋少民,李紫翼.抗裂水泥对混凝土性能的影响研究[J].混凝土与水泥制品,2020(1):24-28. |
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| 作者姓名： | 宋少民 李紫翼 |
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| 作者单位： | 北京建筑大学 建筑结构与环境修复功能材料北京市重点实验室,100044;北京建筑大学 建筑结构与环境修复功能材料北京市重点实验室,100044 |
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| 基金项目： | 国家自然非活性掺合料在低熟料胶凝体系中微结构与稳定性研究 |
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| 摘 要： | 为明确抗裂水泥对于现代混凝土的适用性与技术优势,针对抗裂水泥与普通硅酸盐水泥配制的混凝土强度、和易性、抗裂性能等进行了对比研究。试验结果表明,抗裂水泥对减水剂的相容性优于普通水泥,水化热低,在净浆和混凝土中开裂敏感性低,抗裂水泥配制的混凝土和易性良好,强度低于普通水泥混凝土,但均满足各强度等级要求,且有一定的强度保证率,对提升混凝土抗裂性能有利。
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| 关 键 词： | 抗裂水泥 混凝土 外加剂相容性 开裂敏感性 抗压强度 |
Study on Effect of Crack-resistant Cement on Concrete Performance |
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| SONG Shao-min,LI Zi-yi.Study on Effect of Crack-resistant Cement on Concrete Performance[J].China Concrete and Cement Products,2020(1):24-28. |
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| Authors: | SONG Shao-min LI Zi-yi |
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| Affiliation: | (Beijing University of Civil Engineering and Architecture Beijing Key Laboratory of Advanced Functional Materials for Building and Environment,100044) |
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| Abstract: | In order to clarify the applicability and technical advantages of crack-resistant cement for modern concrete,the strength, workability and crack resistance of concrete prepared by crack-resistant cement and ordinary Portland cement were compared. The test results show that the compatibility of the crack-resistant cement to the water-reducing agent is better than that of ordinary cement, the hydration heat and the cracking sensitivity are lower in the paste and concrete respectively, and the concrete prepared by the crack-resistant cement has better workability. The strength is lower than that of ordinary cement concrete, but it satisfies the requirements of various strength grades, and has a certain strength guarantee rate, which is beneficial to improve the crack resistance of concrete. |
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| Keywords: | Crack-resistant cement Concrete Additives compatibility Cracking sensitivity Compressive strength |
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