河道疏浚底泥制备泡沫混凝土试验研究_《混凝土与水泥制品》杂志社

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发布时间：2020-01-06 00:00:00

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河道疏浚底泥制备泡沫混凝土试验研究

Experiment Study on Preparation of Foamed Concrete with Dredged River Sediment

2020年1期

疏浚底泥；泡沫混凝土；性能；微硅粉；生物炭

Dredged river sediment; Foamed concrete; Property; Silica fume; Biochar

2020年1期

10.19761/j.1000-4637.2020.01.086.06

国家水体污染控制与治理科技重大专项资助课题（2017ZX07202005-005、2017ZX07204002-03）

杨小云1，赵玲1,2；陈兵3，仁增1，张颖2，李德平2，申哲民1

中机国际工程设计研究院有限责任公司，长沙 410000

杨小云1，赵玲1,2；陈兵3，仁增1，张颖2，李德平2，申哲民1

杨小云,赵玲,陈兵,等.河道疏浚底泥制备泡沫混凝土试验研究[J].混凝土与水泥制品,2020(1):86-91.

YANG X Y,ZHAO L,CHEN B,et al.Experiment Study on Preparation of Foamed Concrete with Dredged River Sediment[J].China Concrete and Cement Products,2020(1):86-91.

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1000

摘要：利用河道疏浚底泥制备泡沫混凝土，研究了石灰、粉煤灰和微硅粉部分代替水泥，以及外掺偏硅酸钠、水玻璃和生物炭对所制备的底泥基泡沫混凝土抗压强度、导热系数和吸水耐水性能的影响。结果表明，微硅粉的加入优化了孔隙分布，可诱发火山灰反应，改善底泥基泡沫混凝土的综合性能；外掺2%的大麦草生物炭（500 ℃）可使底泥基泡沫混凝土的抗压强度提高14.2%，导热系数降低4.78%；添加石灰、粉煤灰和偏硅酸钠降低了泡沫混凝土的综合性能；水玻璃对泡沫混凝土的性能影响不大。
Abstract: Dredged sediment was used to produce foamed concrete, and the effects of partial replacement of cement by lime, fly ash and silica fume, and doping sodium metasilicate, water glass and biochar on the compressive strength, thermal conductivity and water absorption of the foamed concrete were studied. The results show that the addition of silica fume optimizes the pore distribution, induce the pozzolanic reaction, which can improve the comprehensive properties of the sediment foamed concrete. Dosage of 2% barley grass biochar (500 ℃) can increase the compressive strength of the sediment foamed concrete by 14.2% and reduce the thermal conductivity by 4.78%. The addition of lime, fly ash and sodium metasilicate reduce the comprehensive properties of foam concrete, and water glass has little effect on the properties of foam concrete.

英文名 : Experiment Study on Preparation of Foamed Concrete with Dredged River Sediment

刊期 : 2020年1期

关键词 : 疏浚底泥；泡沫混凝土；性能；微硅粉；生物炭

Key words : Dredged river sediment; Foamed concrete; Property; Silica fume; Biochar

刊期 : 2020年1期

DOI : 10.19761/j.1000-4637.2020.01.086.06

文章编号 :

基金项目 : 国家水体污染控制与治理科技重大专项资助课题（2017ZX07202005-005、2017ZX07204002-03）

作者 : 杨小云1，赵玲1,2；陈兵3，仁增1，张颖2，李德平2，申哲民1

单位 : 中机国际工程设计研究院有限责任公司，长沙 410000

杨小云1，赵玲1,2；陈兵3，仁增1，张颖2，李德平2，申哲民1

杨小云,赵玲,陈兵,等.河道疏浚底泥制备泡沫混凝土试验研究[J].混凝土与水泥制品,2020(1):86-91.

YANG X Y,ZHAO L,CHEN B,et al.Experiment Study on Preparation of Foamed Concrete with Dredged River Sediment[J].China Concrete and Cement Products,2020(1):86-91.

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摘要

参数

结论

参考文献

引用本文

摘要：利用河道疏浚底泥制备泡沫混凝土，研究了石灰、粉煤灰和微硅粉部分代替水泥，以及外掺偏硅酸钠、水玻璃和生物炭对所制备的底泥基泡沫混凝土抗压强度、导热系数和吸水耐水性能的影响。结果表明，微硅粉的加入优化了孔隙分布，可诱发火山灰反应，改善底泥基泡沫混凝土的综合性能；外掺2%的大麦草生物炭（500 ℃）可使底泥基泡沫混凝土的抗压强度提高14.2%，导热系数降低4.78%；添加石灰、粉煤灰和偏硅酸钠降低了泡沫混凝土的综合性能；水玻璃对泡沫混凝土的性能影响不大。

Abstract: Dredged sediment was used to produce foamed concrete, and the effects of partial replacement of cement by lime, fly ash and silica fume, and doping sodium metasilicate, water glass and biochar on the compressive strength, thermal conductivity and water absorption of the foamed concrete were studied. The results show that the addition of silica fume optimizes the pore distribution, induce the pozzolanic reaction, which can improve the comprehensive properties of the sediment foamed concrete. Dosage of 2% barley grass biochar (500 ℃) can increase the compressive strength of the sediment foamed concrete by 14.2% and reduce the thermal conductivity by 4.78%. The addition of lime, fly ash and sodium metasilicate reduce the comprehensive properties of foam concrete, and water glass has little effect on the properties of foam concrete.

关键词:

疏浚

the

and

混凝土

泡沫

foamed

性能

concrete

底泥

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[15] WANG L,CHEN L,TSANG D C,et al.The roles of biochar as green admixture for sediment-based construction products[J].Cement and Concrete Composites,2019(104):103348.

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