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李崇智¹ ,  王琬怡¹ ,  梁志勇² ,  谈 珽² ,  彭家蔓¹ ,  王    坤¹ ,  任强伟¹

( 1 .  北京建筑大学 土木与交通工程学院 ，北京 100044 ;  2.  广西宝添环保材料有限公司 ，南宁 530001)

摘   要 ：为加强对花岗岩石粉高效利用和环境可持续发展的重视，研究花岗岩石粉对矿粉－粉煤灰复合水 泥浆体及其制备的 C30 与 C50 混凝土性能的影响。结果表明，将花岗岩石粉内掺到 1 ∶1 矿粉和粉煤灰中，内掺10% 时水泥浆体流动度最大，内掺超过 30% 时浆体的流动度急剧下降 ；对 28 d 水泥胶砂抗压强度的影响在内掺 30% 时达到最优，对抗折强度影响相对较小；内掺 15% 的花岗岩石粉复合掺合料应用于 C30 和 C50 混凝土，新 拌混凝土工作性能良好，无离析泌水现象，混凝土表面平整，28 d 抗压强度分别提升至 36. 7 和 56. 8 MPa;  碳化 深度试验表明，适量的花岗岩石粉能够有效提升混凝土的抗碳化性能。

关键词：花岗岩石粉 ；复合掺合料 ；混凝土

中图分类号：TU528           

文献标志码：A            

文章编号： 1005- 8249  (2025)  01- 0024- 05 

DOI:10. 19860/j.cnki.issn1005 - 8249.2025 .01 .005

 

LI Chongzhi ¹  ,  WANG Wanyi ¹  ,  LIANG Zhiyong² ,  TAN Ting² ,  PENG Jiaman¹  ,  WANG Kun¹  ,  REN Qiangwei ¹

( 1 . School of Civil and Transportation Engineering ,   Beijing University of Civil Engineering and

Architecture ,  Beijing 100044 ,  China;  2. Guangxi  Baotian Environmental Protection  Materials

Co. ，Ltd. ，Nanning 530001 ,   China)

Abstract: To enhance the emphasis on the efficient utilization of granite powder and sustainable environmental development, the study explores the impact of granite powder on the properties of composite cement slurry consisting of mineral powder and fly ash, as well as the performance of the resulting C30 and C50 concrete.The results show that when the granite powder is mixed into 1:1 mineral powder and fly ash, the fluidity of cement slurry reaches the maximum when the granite powder is mixed with 10%, and the fluidity of slurry decreases rapidly when the granite powder is mixed with more than 30%. The influence on compressive strength of 28 d cement mortar is the largest when 30% is added, and the influence on flexural strength is relatively small.When the composite admixture of 15% granite powder is applied to C30 and C50 concrete, the newly mixed concrete has good workability, no segregation and bleeding problem, the appearance of concrete is smooth, and the 28 d compressive strength increased to 36.7 MPa and 56.8 MPa. The carbonation depth test shows that an appropriate amount of granite powder can effectively improve the carbonation resistance of concrete.

Key words: granite powder, compound admixture, concrete

作者简介：李崇智  (1969—) ,  男 ，博士，教授 、硕导 ，研究方向：混凝土外加剂和矿物掺合料的研制与应用。

通信作者： 王琬怡  (1999—) ,  女 ，硕士研究生 ，研究方向： 固废基胶凝材料道路混凝土和镁水泥固化土。

收稿日期：2023 - 09 - 09