复合矿粉再生骨料CFG桩桩身材料强度试验研究

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发布时间：2020-01-06 00:00:00

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复合矿粉再生骨料CFG桩桩身材料强度试验研究

Experimental Study on the Strength of Materials of Composite Mineral Powder Recycled Aggregate CFG Piles

2020年1期

复合矿粉再生骨料CFG桩；配合比试验；正交试验；强度预测

Composite mineral powder recycled aggregate CFG pile; Mixing ratio test; Orthogonal test; Strength prediction

2020年1期

10.19761/j.1000-4637.2020.01.097.04

苏州市科技计划项目（SGC201721）。

陈辉1，高强2，陈甦1，孙飞2，钱林根1

1.苏州大学，215131；2.江苏建院营造股份有限公司，苏州 215001

陈辉1，高强2，陈甦1，孙飞2，钱林根1

陈辉,高强,陈甦,等.复合矿粉再生骨料CFG桩桩身材料强度试验研究[J].混凝土与水泥制品,2020(1):97-100.

CHEN H,GAO Q,CHEN S,et al.Experimental Study on the Strength of Materials of Composite Mineral Powder Recycled Aggregate CFG Piles[J].China Concrete and Cement Products,2020(1):97-100.

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摘要：研究了复合矿粉（矿粉+粉煤灰）再生骨料CFG桩桩身材料强度随矿粉替代粉煤灰百分比和养护龄期的变化规律；通过正交试验设计，分析了复合矿粉再生骨料CFG桩桩身材料强度的影响因素，并对正交试验结果进行数值拟合，提出了强度预测公式。研究结果表明，复合矿粉再生骨料CFG桩桩身材料强度随矿粉替代粉煤灰百分比的增加而增加，但当矿粉替代粉煤灰百分比大于50%时，强度增长速率开始减小；复合矿粉再生骨料桩桩身材料强度随龄期增加而增大；影响复合矿粉CFG桩桩身材料强度的因素顺序依次为：龄期>矿粉取代粉煤灰>矿粉取代水泥，最优组合为矿粉取代粉煤灰100%、矿粉取代水泥0、龄期90 d；桩身材料强度预测公式精度较高。
Abstract: Through mixture ratio test of CFG pile with composite mineral powder (mineral powder + fly ash) recycled aggregate, the change rules of material strength under different replacement percentage of fly ash with mineral powder and various curing age were studied, and the influencing factors of material strength of CFG pile with composite mineral powder recycled aggregate was analyzed by orthogonal test, and the material strength prediction formula was proposed by mathematical fitting. The results show that the strength of composite mineral powder recycled aggregate pile increases with the increase of the percentage of fly ash replaced by mineral powder, but when the replacement percentage is greater than 50%, the growth rate of strength begins to decrease. The strength of composite mineral powder recycled aggregate pile increases with the increase of curing age. The importance ranking of factors affecting the strength of CFG pile material is: curing age > replacement percentage of fly ash with mineral powder > replacement percentage of cement with mineral powder, and the optimal combination is 100% fly ash replaced by mineral powder, 0% cement replaced by mineral powder, and 90 days curing age. The prediction formula of material strength has high accuracy

英文名 : Experimental Study on the Strength of Materials of Composite Mineral Powder Recycled Aggregate CFG Piles

刊期 : 2020年1期

关键词 : 复合矿粉再生骨料CFG桩；配合比试验；正交试验；强度预测

Key words : Composite mineral powder recycled aggregate CFG pile; Mixing ratio test; Orthogonal test; Strength prediction

刊期 : 2020年1期

DOI : 10.19761/j.1000-4637.2020.01.097.04

文章编号 :

基金项目 : 苏州市科技计划项目（SGC201721）。

作者 : 陈辉1，高强2，陈甦1，孙飞2，钱林根1

单位 : 1.苏州大学，215131；2.江苏建院营造股份有限公司，苏州 215001

陈辉1，高强2，陈甦1，孙飞2，钱林根1

陈辉,高强,陈甦,等.复合矿粉再生骨料CFG桩桩身材料强度试验研究[J].混凝土与水泥制品,2020(1):97-100.

CHEN H,GAO Q,CHEN S,et al.Experimental Study on the Strength of Materials of Composite Mineral Powder Recycled Aggregate CFG Piles[J].China Concrete and Cement Products,2020(1):97-100.

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引用本文

摘要：研究了复合矿粉（矿粉+粉煤灰）再生骨料CFG桩桩身材料强度随矿粉替代粉煤灰百分比和养护龄期的变化规律；通过正交试验设计，分析了复合矿粉再生骨料CFG桩桩身材料强度的影响因素，并对正交试验结果进行数值拟合，提出了强度预测公式。研究结果表明，复合矿粉再生骨料CFG桩桩身材料强度随矿粉替代粉煤灰百分比的增加而增加，但当矿粉替代粉煤灰百分比大于50%时，强度增长速率开始减小；复合矿粉再生骨料桩桩身材料强度随龄期增加而增大；影响复合矿粉CFG桩桩身材料强度的因素顺序依次为：龄期>矿粉取代粉煤灰>矿粉取代水泥，最优组合为矿粉取代粉煤灰100%、矿粉取代水泥0、龄期90 d；桩身材料强度预测公式精度较高。

Abstract: Through mixture ratio test of CFG pile with composite mineral powder (mineral powder + fly ash) recycled aggregate, the change rules of material strength under different replacement percentage of fly ash with mineral powder and various curing age were studied, and the influencing factors of material strength of CFG pile with composite mineral powder recycled aggregate was analyzed by orthogonal test, and the material strength prediction formula was proposed by mathematical fitting. The results show that the strength of composite mineral powder recycled aggregate pile increases with the increase of the percentage of fly ash replaced by mineral powder, but when the replacement percentage is greater than 50%, the growth rate of strength begins to decrease. The strength of composite mineral powder recycled aggregate pile increases with the increase of curing age. The importance ranking of factors affecting the strength of CFG pile material is: curing age > replacement percentage of fly ash with mineral powder > replacement percentage of cement with mineral powder, and the optimal combination is 100% fly ash replaced by mineral powder, 0% cement replaced by mineral powder, and 90 days curing age. The prediction formula of material strength has high accuracy.

关键词:

复合

the

mineral

powder

strength

强度

cfg

with

粉煤灰

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