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李  劭，宋少民

 

 

(北京建筑大学，未来城市设计高精尖创新中心，北京 100044)

摘要：为了砂浆产业的低碳和可持续发展，文中研究固废基胶凝材料和用粉煤灰替代部分固废基胶凝材料的二元胶凝组分砂浆配合比设计的规律和关键参数，通过控制胶凝材料和水的用量研究M10~M50不同强度等级的砂浆性能。结果表明:胶凝材料和水的用量都对砂浆稠度和抗压强度有影响，胶凝材料对砂浆的影响比水的影响更为显著;胶凝材料用量不能过低，用水量不得过高，否则会出现明显的泌水。粉煤灰替代率对砂浆稠度和抗压强度影响显著，替代率增加，稠度增加，抗压强度有所下降，对砂浆早期强度有显著负面影响;当胶凝材料用量较低，粉煤灰替代率达50%时，早期强度过低，不具有技术可行性。总体上看，基于固废基胶凝材料的二元胶凝组分制备砂浆技术经济性更好。研究结果可为明确固废基胶凝材料砂浆配合比设计的技术要点,为固废基胶凝材料砂浆后期工程应用提供数据支撑。

关键词：砂浆;固废基胶凝材料；二元胶凝组分；配合比；稠度；抗压强度

中图分类号：TU528

文献标志码：A

文章编号：1005-8249（2025）06-0007-06

DOI：10.19860/j.cnki.issn1005-8249.2025-06- 002

 

 

 

LI Shao,SONG Shaomin

 

 

(Beijing University of Civil Engineering and Architecture,High-End Innovation Center for Future Urban Design,Beijing 100044,China)

 

Abstract：To promote low-carbon and sustainable development in the mortar industry,this study investigates the design principles and key parameters for binary cementitious mortar mix proportions using solid waste-based cementitious materials and a dual-component cementitious system where fly ash replaces solid waste-based cementitious materials.Mortar with strength grades ranging from M10 to M50 was prepared and tested by controlling cementitious material dosage and water content.The results showed that both cementitious material dosage and water content influence mortar consistency and compressive strength,with cementitious material dosage exerting a more significant effect than water content.During mortar preparation,cementitious material dosage must not be excessively low,and water content must not be excessively high,otherwise pronounced bleeding will occur.The fly ash replacement rate significantly affects mortar consistency and compressive strength.Increasing replacement rate enhances consistency but reduces compressive strength,exerting a pronounced negative effect on early-stage strength.When cementitious material content is low and fly ash replacement reaches 50%,early strength becomes excessively low,rendering the mixture technically unfeasible.Overall,the technology for preparing mortar using solid waste-based cementitious materials with a binary cementitious component demonstrates superior economic viability.These findings provide key technical insights for optimizing the mix design of solid waste-based cementitious mortar and offer data support for its future engineering applications.

 

Key words：mortar;solid waste-based cementitious materials;binary cementitious components;mix ratio;consistency;compressive strength

作者简介：李  劭（1999—）,男，硕士研究生,研究方向：建筑材料。

通信作者：宋少民（1965—）,男，硕士,教授,研究方向：土木工程材料。

收稿日期：2025-08-10