[1]金耀华,赵延春,王 兵,等.基于正交试验的植生型再生混凝土配合比优化研究[J].西安建筑科技大学学报(自然科学版),2021,53(01):47-52.[doi:10.15986/j.1006-7930.2021.01.007]
　JIN Yaohua,ZHAO Yanchun,WANG Bing,et al.Mix optimization design of platgrowing recycled concrete based on orthogonality test[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2021,53(01):47-52.[doi:10.15986/j.1006-7930.2021.01.007]
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基于正交试验的植生型再生混凝土配合比优化研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
53
期数:
2021年01期
页码:
47-52
栏目:
出版日期:
2021-02-28

文章信息/Info

Title:
Mix optimization design of platgrowing recycled concrete based on orthogonality test
文章编号:
1006-7930(2021)01-0047-06
作者:
金耀华1; 赵延春1; 王 兵1; 等
(1.扬州市职业大学 土木工程学院,江苏 扬州 225000; 2. 扬州华正建筑工程质量检测有限公司,江苏 扬州 225000)
Author(s):
JIN Yaohua1;  ZHAO Yanchun1;  WANG Bing1;  et al
(1.College of Civil Engineering,Yangzhou Vocational University, Jiangsu Yangzhou 225000,China; 2.Yangzhou Huazheng Construction Engineering Quality Inspection Co., Ltd, Jiangsu Yangzhou 225000,China)
关键词:
植生型再生混凝土;  正交试验;  配合比设计
Keywords:
platgrowing recycled concrete;  orthogonality test;  max optimization design
分类号:
TU443
DOI:
10.15986/j.1006-7930.2021.01.007
文献标志码:
A
摘要:
通过正交试验法研究目标孔隙率、水胶比、硅灰掺量和增稠剂掺量四种因素对植生型再生混凝土实测孔隙率、28 d抗压强度和pH值的影响.利用考虑外掺料的绝对体积法进行配合比设计计算,通过极差和方差分析方法确定因素主次之分以及影响水平,采用综合因素考虑法进行配合比优化设计.结果表明:当目标孔隙率30%,水胶比0.32,硅灰掺量7%,增稠剂添量1‰时植生再生混凝土性能最优,其实测孔隙率达28.3%,28 d抗压强度达11.75 MPa,pH值为9.95.目标孔隙率是各性能指标的首要控制因素; 硅灰掺量对pH值有显著影响,随着硅灰掺量的增加,能明显降低pH值.
Abstract:
The influence of target porosity,water-binder ratio,silica fume dosages,and addition of thickener ratio on the measured porosity,28 days compressive strength, and pH value of platgrowing recycled concrete was studied by orthogonality test.The absolute volume method considering the admixture was used to calculate the mix design.The primary and secondary factors as well as the influence level were determined by range and variance analysis.The comprehensive factor method was used to optimize the mix design.Results showed that the platgrowing recycled concrete reached the optimum level when the target porosity water-binder ratio,the silica fume dosages,and the addition of thickener were 30%,0.32, 7%,and 1‰,respectively with this condition,the measured porosity, 28 days compressive strength,and pH value were 28.3%,11.75 MPa,and 9.95 respectively.The target porosity is the primary control factor of each performance index,and the silica fume dosages has a significant effect on the pH value. With the increase of silica fume dosages, the pH value can be significantly decreased.

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备注/Memo

备注/Memo:
收稿日期:2020-07-14 修改稿日期:2021-01-12
基金项目:扬州市级计划-社会发展基金资助项目(YZ2019049); 扬州市科技局“市校合作专项”基金资助项目(YZ2017287); 扬州市职业大学校级科研基金资助项目(2017ZR20、2018ZR22)
第一作者:金耀华(1981-),男,副教授,主要从事混凝土教学与研究.E-mail:jinyz03429@163.com
更新日期/Last Update: 2021-02-28