基于响应面法的固化泥浆强度试验研究
|
摘要
试验选用水泥、粉煤灰、生石灰和硅酸钠作为泥浆的固化材料,即以水泥、粉煤灰、生石灰、硅酸钠作为四个影响因子,以28 d的无侧限抗压强度为响应值。采用Box-Behnken响应面试验设计方法安排试验。通过方差分析排除不显著项,建立二次多项式回归方程,并分析各影响因子间的交互关系。结果显示:水泥、生石灰对固化泥浆抗压强度的线性作用显著;粉煤灰在一定掺量条件下可以以1∶1的比例代替水泥对泥浆进行固化。生石灰掺量不宜过高,否则会影响水泥对泥浆的固化作用。生石灰作为粉煤灰的碱性激发剂,对提升粉煤灰的固化作用效果显著。
Cement,fly ash,quicklime and sodium silicate were selected as solidifying materials in the experiment,that is to say,cement,fly ash,quicklime and sodium silicate are taken as four influencing factors,and the unconfined compressive strength of 28 days is taken as the response value. The Box-Behnken response test design method was used to arrange the experiment. Quadratic polynomial regression equation was established by eliminating the insignificant items through variance analysis,and the interaction among the influencing factors was analyzed. The results show that cement and quicklime have significant linear effects on the compressive strength of solidified mud. Fly ash can be used to solidify the slurry instead of cement under certain conditions. The content of quicklime should not be too high,otherwise it will affect the solidification effect of cement on mud. As an alkaline activator of fly ash,quicklime has a significant effect on the solidification of fly ash.
Cement,fly ash,quicklime and sodium silicate were selected as solidifying materials in the experiment,that is to say,cement,fly ash,quicklime and sodium silicate are taken as four influencing factors,and the unconfined compressive strength of 28 days is taken as the response value. The Box-Behnken response test design method was used to arrange the experiment. Quadratic polynomial regression equation was established by eliminating the insignificant items through variance analysis,and the interaction among the influencing factors was analyzed. The results show that cement and quicklime have significant linear effects on the compressive strength of solidified mud. Fly ash can be used to solidify the slurry instead of cement under certain conditions. The content of quicklime should not be too high,otherwise it will affect the solidification effect of cement on mud. As an alkaline activator of fly ash,quicklime has a significant effect on the solidification of fly ash.
引文
[1]陈胜,王琦,岳云龙.新型土壤固化剂的研究[J].济南大学学报(自然科学版),2006,20(1):12-15.
[2]邓小轩,黄新,宁建国.外掺剂对水泥固化土强度的影响[J].岩土工程学报,2011,33(10):1628-1633.
[3]SulaD.O.A.A comparative evaluation of cement and lime modification of laterite[J].Engineering Geology,1996(42):71-81.
[4]Eishi Tomohisa,Kohei Sawa,Mari Tachibana.Hardening treatment of muddy soil with coal fly ashes[J].Journal of Hazardous Materials,1999(59):223-231.
[5]Mar Saeed Baghabra A1-Amoudi.Characterization and Chemical Stabilization of AI-Qurayyah Sabkha Soil[J].Journal of materials in civil engineering,2002,14(6):478-484.
[6]REZA TABARAKI,ASHRAF NATEGHI.Optimization of ultrasonicassisted extraction of natural antioxidants from rice bran using response surface methodology[J].Ultrasonics Sonochemistry,2011,18(6):1279-1286.
[7]郑杰.试验设计与数据分析[M].广州:华南理工大学出版社,2016.
[8]刘松玉,钱国超,章定文.粉喷桩复合地基理论与工程应用[M].北京:中国建筑工业出版社,2006.
[2]邓小轩,黄新,宁建国.外掺剂对水泥固化土强度的影响[J].岩土工程学报,2011,33(10):1628-1633.
[3]SulaD.O.A.A comparative evaluation of cement and lime modification of laterite[J].Engineering Geology,1996(42):71-81.
[4]Eishi Tomohisa,Kohei Sawa,Mari Tachibana.Hardening treatment of muddy soil with coal fly ashes[J].Journal of Hazardous Materials,1999(59):223-231.
[5]Mar Saeed Baghabra A1-Amoudi.Characterization and Chemical Stabilization of AI-Qurayyah Sabkha Soil[J].Journal of materials in civil engineering,2002,14(6):478-484.
[6]REZA TABARAKI,ASHRAF NATEGHI.Optimization of ultrasonicassisted extraction of natural antioxidants from rice bran using response surface methodology[J].Ultrasonics Sonochemistry,2011,18(6):1279-1286.
[7]郑杰.试验设计与数据分析[M].广州:华南理工大学出版社,2016.
[8]刘松玉,钱国超,章定文.粉喷桩复合地基理论与工程应用[M].北京:中国建筑工业出版社,2006.