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肖    强¹  ,  陈艳丽²  ,  王小勇²  ,  陆明志²  ,  朱    维¹  ,  朱炳喜²

 

( 1 .  江苏省水利建设工程有限公司 ，扬州 225002 ;  2.  江苏省水利科学研究院 ，扬州 225002)

摘   要 ：为实现淮河入海水道二期滨海枢纽工程百年寿命高性能混凝土目标、预防碱骨料反应，提出混凝  土性能与配合比参数控制要求。采用正交试验，对胶凝材料用量、粉煤灰和矿渣粉总掺量、减水剂品种与掺量、粉煤灰与矿渣粉掺量比4因素3水平9组配合比的抗压强度、用水量等试验结果进行极差分析。结果表明：胶凝材料用量和减水剂品种是影响混凝土28 d 强度的主要因素，减水剂品种是影响混凝土用水量的主要因素；C30   和 C40 混凝土配合比参数可选用：胶凝材料用量不大于 410 kg/m3、粉煤灰和矿渣粉总掺量 35% ~ 45%、粉煤灰与矿渣粉掺量比 0. 5 ~ 1 . 5、减水剂减水率不低于25% ;  碱骨料反应抑制效果评定有效。研究成果对可能使用碱活性骨料的百年寿命高性能混凝土配制、施工具有指导意义。

关键词：细骨料 ；碱活性 ；碱骨料反应 ；配合比优化 ；正交试验

中图分类号：TV431            

文献标志码：A           

文章编号： 1005- 8249   (2025)  02- 0001- 06 

DOI:10. 19860/j.cnki.issn1005 - 8249.2025 .02.001

 

XIAO Qiang¹  ,  CHEN Yanli² ,  WANG Xiaoyong² ,  LU Mingzhi² ,  ZHU Wei ¹  ,  ZHU Bingxi² 

(1 . Jiangsu Hydraulic Engineering Construction Co . ,  Ltd . ,  Yangzhou 225002,  China;2. Jiangsu Water Conservancy Science Research Institute ,  Yangzhou 225002 ,  China)

Abstract : In order to achieve the goal of 100-year life of high-performance concrete for the Binhai hub project within the second phase of Huaihe River waterway project, and prevent the reaction of alkali aggregates, the control requirements of concrete performance and mix ratio parameters were proposed。The orthogonal test was used，and the range of the test results of compressive strength and water consumption of the dosage of cementitious material、the total content of fly ash and slag powder、the variety and dosage of superplasticizer、the dosage ratio of fly ash and slag powder of the 9 groups in 4 factors and 3 levels was analyzed。The results showed that the dosage of cementitious material and the variety of superplasticizer were the main factors affecting the 28-day strength of concrete, and the variety of superplasticizer was the main factors affecting the water consumption of concrete；the mix ratio parameters of C30 and C40 concrete can be selected：the dosage of cementitious material is not more than 410 kg/m3、the total content of fly ash and slag powder is 35%~45%、the ratio of fly ash to slag powder is 0.5~1.5、the water reduction rate of superplasticizer is not less than 25%；the alkali-aggregate reaction inhibition effect was effectively evaluated. It is of guiding significance for the preparation and construction of 100-year-old concrete that may use alkali active aggregates.

Key words :  fine aggregates;  alkaline activity;  alkali - aggregate reaction;  optimization of mix proportion;  orthogonal test

基金项目： 国家自然科学基金资助项目  (52178171 ) ;  江苏省水利科技基金资助项目  (2024013) 。

作者简介： 肖   强(1981 —) ,  男，本科，高级工程师 ，研究方向：混凝土施工技术。

通信作者：朱炳喜(1966—) ,  男，硕士，研究员级高级工程师 ，研究方向： 高性能混凝土。

收稿日期：2024 - 11 - 02