摘要
试验制备了一种基于固废物胶凝材料的混凝土,并通过单因素试验及正交试验研究其最优配比。试验结果表明,在水胶比0.4~0.5范围内,材料的抗压、抗折强度随水胶比的增加而增大;适量的固废材料掺入混凝土,可以同时提升材料的抗压、抗折强度;在集料掺量60%~80%范围内,抗压、抗折强度曲线均呈现先增后减的趋势;聚丙烯纤维掺量在0.1%~0.3%范围内,抗压强度随掺量增加而下降,抗折强度随掺量增加而增加;减水剂在0.2%~0.8%范围内,减水剂掺量与材料强度呈正相关;通过正交试验确定最优配比为:水胶比为0.5,固废材料掺量为40%,集料掺量为40%,聚丙烯纤维掺量为0.1%,减水剂掺量为0.8%。综上,试验制备的固废基胶凝材料混凝土具备较好的力学性能。
This experiment prepared a concrete based on solid waste cementing materials,and studied its optimal mix ratio through single factor experiments and orthogonal experiments.The experimental results showed that the compressive and flexural strength of the material increases with the increase of the water binder ratio in the range of 0.4 to 0.5;Mixing an appropriate amount of solid waste material into concrete can simultaneously improve the compressive and flexural strength of the material;In the range of 60%~80%aggregate content,the compressive and flexural strength curves showed a trend of increasing first and then decreasing;When the content of polypropylene fiber ranges from 0.1%to 0.3%,the compressive strength decreases with the increase of the content,while the flexural strength increases with the increase of the content;In the range of 0.2%to 0.8%,the amount of water reducing agent is positively correlated with the strength of the material;Through orthogonal test,the optimal ratio is determined as follows:water cement ratio of 0.5,solid waste material content of 40%,aggregate content of 40%,polypropylene fiber content of 0.1%,water reducer content of 0.8%.In summary,the solid waste based cementitious material concrete prepared in this experiment has good mechanical properties.
作者
王伟芳
WANG Weifang(Weinan Vocational and Technical College,Weinan 714000,China)
出处
《盐科学与化工》
CAS
2023年第10期30-35,38,共7页
Journal of Salt Science and Chemical Industry
基金
陕西省职业技术教育学会2021年度职业教育研究课题(2021SZXYB21建筑工程技术高水平专业群建设的研究与实践)
渭南职业技术学院工程服务有限公司科研项目(KY2021-02《回弹法检测混凝土强度的准确性研究》)。
关键词
固废物
正交试验
水胶比
聚丙烯纤维
强度
Solid waste
Orthogonal test
Water glue ratio
Polypropylene fiber
Strength
