段明磊,肖 强,程智清,杨金铨,刘 聪,王立军
陶瓷抛光粉和石灰石粉双掺对混凝土性能的影响研究
段明磊,肖 强,程智清,杨金铨,刘 聪,王立军
摘 要:研究了不同掺量的陶瓷抛光粉和石灰石粉对混凝土工作性、力学性能以及抗氯离子扩散和抗冻融性能的影响。结果表明,双掺10%石灰石粉和不超过20%的陶瓷抛光粉可以提高混凝土坍落度,改善粘聚性,同时可细化混凝土孔结构并改善其界面结构,从而提高混凝土强度、抗氯离子扩散和抗冻融性能。双掺时,陶瓷抛光粉最佳掺量为10%;继续增加陶瓷抛光粉掺量对于改善混凝土内部结构无益,反而劣化了混凝土性能。
Abstract: Effects of different contents of ceramic polishing powder and limestone powder on the workability, mechanical properties, resistance chlorine diffusion and freezing-thawing circle of concrete are studied in this paper. The results indicate that the workability, microstructure, compressive strength, resistance chlorine diffusion and freezing-thawing circle performance of concrete mixed with 10% limestone powder and not more than 20% ceramic polishing powder are improved. The optimal replaced content of ceramic polishing powder is 10%, when mixed with limestone and ceramic polishing powder. However, the performance of concrete could not be improved when the dosage of ceramic polishing powder is more than 10%.
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