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基于正交试验的硅粉-纳米SiO2高强灌浆料性能研究
Study on Properties of Silica Fume-nano-SiO2 High-strength Grout Based on Orthogonal Tests
2021年第10期
正交试验;硅粉;纳米二氧化硅;抗压强度;灌浆料
Orthogonal test; Silica fume; Nano-SiO2; Compressive strength; Grouting material
2021年第10期
10.19761/j.1000-4637.2021.10.012.04
国家自然科学基金项目(51779224、51579221);浙江省基础公益研究计划项目(LHZ19E090002)。
李政达1,王庆敏1,刘立群2,郦湫翰1,王振宇1
浙江大学 建筑工程学院,浙江 杭州 310058;2.大唐滑县风力发电有限责任公司,河南 安阳456476

李政达1,王庆敏1,刘立群2,郦湫翰1,王振宇1

李政达,王庆敏,刘立群,等.基于正交试验的硅粉-纳米SiO2高强灌浆料性能研究[J].混凝土与水泥制品,2021(10):12-15.

LI Z D,WANG Q M,LIU L Q,et al.Study on Properties of Silica Fume-nano-SiO2 High-strength Grout Based on Orthogonal Tests[J].China Concrete and Cement Products,2021(10):12-15.

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摘   要:为了制备具有高流动性的高强灌浆料,进行了四因素三水平的正交试验L9(34),研究了硅粉掺量、纳米二氧化硅(NS)掺量、砂胶比、水胶比对硅粉-NS灌浆料的流动度、抗折强度、抗压强度的影响。结合极差分析法,分析了各材料掺量变化对灌浆料流动度、抗折强度、抗压强度的影响程度。结果表明:与NS相比,硅粉对灌浆料早期强度的影响较大;通过优化砂胶比和水胶比,可以配制出流动度好、强度高的硅粉-NS灌浆料。 Abstract: In order to produce high-strength grout with high fluidity, the orthogonal tests L9(34) with four control factors and three levels were carried out via the fluidity tests. The influence of silica fume content, nano-SiO2(NS) content, sand-binder ratio, W/B on the fluidity, flexural strength and compressive strength of silica fume-NS grout was studied. Combined with the range analysis method, the influence degree of each material content change on the fluidity, flexural strength and compressive strength of grout was analyzed. The results show that compared with NS, silica fume has a greater impact on the early strength. By optimizing the sand-binder ratio and W/B, a silica fume-NS grout with good fluidity and high strength can be prepared.
英文名 : Study on Properties of Silica Fume-nano-SiO2 High-strength Grout Based on Orthogonal Tests
刊期 : 2021年第10期
关键词 : 正交试验;硅粉;纳米二氧化硅;抗压强度;灌浆料
Key words : Orthogonal test; Silica fume; Nano-SiO2; Compressive strength; Grouting material
刊期 : 2021年第10期
DOI : 10.19761/j.1000-4637.2021.10.012.04
文章编号 :
基金项目 : 国家自然科学基金项目(51779224、51579221);浙江省基础公益研究计划项目(LHZ19E090002)。
作者 : 李政达1,王庆敏1,刘立群2,郦湫翰1,王振宇1
单位 : 浙江大学 建筑工程学院,浙江 杭州 310058;2.大唐滑县风力发电有限责任公司,河南 安阳456476

李政达1,王庆敏1,刘立群2,郦湫翰1,王振宇1

李政达,王庆敏,刘立群,等.基于正交试验的硅粉-纳米SiO2高强灌浆料性能研究[J].混凝土与水泥制品,2021(10):12-15.

LI Z D,WANG Q M,LIU L Q,et al.Study on Properties of Silica Fume-nano-SiO2 High-strength Grout Based on Orthogonal Tests[J].China Concrete and Cement Products,2021(10):12-15.

摘要
参数
结论
参考文献
引用本文

摘   要:为了制备具有高流动性的高强灌浆料,进行了四因素三水平的正交试验L9(34),研究了硅粉掺量、纳米二氧化硅(NS)掺量、砂胶比、水胶比对硅粉-NS灌浆料的流动度、抗折强度、抗压强度的影响。结合极差分析法,分析了各材料掺量变化对灌浆料流动度、抗折强度、抗压强度的影响程度。结果表明:与NS相比,硅粉对灌浆料早期强度的影响较大;通过优化砂胶比和水胶比,可以配制出流动度好、强度高的硅粉-NS灌浆料。

Abstract: In order to produce high-strength grout with high fluidity, the orthogonal tests L9(34) with four control factors and three levels were carried out via the fluidity tests. The influence of silica fume content, nano-SiO2(NS) content, sand-binder ratio, W/B on the fluidity, flexural strength and compressive strength of silica fume-NS grout was studied. Combined with the range analysis method, the influence degree of each material content change on the fluidity, flexural strength and compressive strength of grout was analyzed. The results show that compared with NS, silica fume has a greater impact on the early strength. By optimizing the sand-binder ratio and W/B, a silica fume-NS grout with good fluidity and high strength can be prepared.

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(1)灌浆料的流动度主要取决于水胶比,流动度随水胶比增加而增加,随胶砂比增加而降低;当硅粉掺量为15%~25%、NS掺量为10%~30%时,灌浆料的流动度均随硅粉、NS掺量增加呈先降低再略增加的趋势。
(2)灌浆料的早期抗折强度主要取决于硅粉掺量,随着硅粉掺量从15%增加到25%时,灌浆料早期抗折强度减小。灌浆料的后期抗折强度主要取决于水胶比,适当降低水胶比能够提高基体密实性和后期抗折强度。
(3)灌浆料的早期抗压强度主要取决于硅粉掺量,随着硅粉掺量的增加,灌浆料早期抗压强度减小。灌浆料的后期抗压强度主要取决于砂胶比,适宜的砂胶比可以提高其后期抗压强度。

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李政达,王庆敏,刘立群,.基于正交试验的硅粉-纳米SiO2高强灌浆料性能研究[J].混凝土与水泥制品,2021(10):12-15.

LI Z D,WANG Q M,LIU L Q,et al.Study on Properties of Silica Fume-nano-SiO2 High-strength Grout Based on Orthogonal Tests[J].China Concrete and Cement Products,2021(10):12-15.

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