赤泥对碱激发轻质泡沫混凝土性能的影响研究

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发布时间：2020-01-06 00:00:00

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赤泥对碱激发轻质泡沫混凝土性能的影响研究

Study on the effect of red mud on properties of alkali activated lightweight foam concrete

2023年第10期

轻质泡沫混凝土；赤泥掺量；宏观性能；微观机理

Lightweight foam concrete; Content of red mud; Macroscopic property; Microscopic mechanism

2023年第10期

10.19761/j.1000-4637.2023.10.066.06

胡忠帅，董建统，刘志勇*

烟台大学土木工程学院，山东烟台264005

胡忠帅，董建统，刘志勇*

胡忠帅,董建统,刘志勇.赤泥对碱激发轻质泡沫混凝土性能的影响研究[J].混凝土与水泥制品,2023(10):66-71.

HU Z S,DONG J T,LIU Z Y.Study on the effect of red mud on properties of alkali activated lightweight foam concrete[J].China Concrete and Cement Products,2023(10):66-71.

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摘要：为探究赤泥部分取代矿渣对碱激发泡沫混凝土性能及其微观机理的影响，以赤泥-硅酸盐水泥-矿渣三元复合胶凝材料为泡沫混凝土基体，采用氢氧化钠和硅酸钠溶液作为激发剂，通过纳米改性发泡剂进行物理发泡，制备了不同赤泥取代率的轻质泡沫混凝土（密度等级为A04），并采用激光位移传感器、电子显微镜、X射线衍射仪及热重分析仪进行了检测和表征。结果表明：赤泥的掺入不利于泡沫混凝土的前期稳定性，当赤泥取代率为20%~40%时，泡沫混凝土前90 min的最终沉降量增量较小；赤泥的掺入会降低泡沫混凝土流动度和抗压强度；当赤泥掺量为30%时，泡沫混凝土的抗压强度下降速率最低。 Abstract: In order to study the replacement of mineral powder with red mud on the macroscopic properties and microscopic mechanism of alkali activited foam concrete, the lightweight foam concrete(its density class is A04) with different contents of red mud was prepared by using red mud-Portland cement-slag terpolymer as the foam concrete matrix, the sodium hydroxide and sodium silicate solutions were used as activators, the nano-modified foaming agent was used as physical foaming. The laser displacement sensor, electron microscope, X-ray diffractometer and thermogravimetric analyzer were used to detect and characterize. The results show that the replacement of mineral powder with red mud is not conducive to the early stability of foam concrete, but when the content of red mud increases from 20% to 40%, the increment of final settlement in the first 90 min of foam concrete is small. The replacement of mineral powder with red mud will reduce the fluidity and compressive strength of foam concrete. When the content of red mud is 30%, the compressive strength of foam concrete will decrease at the lowest rate.

英文名 : Study on the effect of red mud on properties of alkali activated lightweight foam concrete

刊期 : 2023年第10期

关键词 : 轻质泡沫混凝土；赤泥掺量；宏观性能；微观机理

Key words : Lightweight foam concrete; Content of red mud; Macroscopic property; Microscopic mechanism

刊期 : 2023年第10期

DOI : 10.19761/j.1000-4637.2023.10.066.06

文章编号 :

基金项目 :

作者 : 胡忠帅，董建统，刘志勇*

单位 : 烟台大学土木工程学院，山东烟台264005

胡忠帅，董建统，刘志勇*

胡忠帅,董建统,刘志勇.赤泥对碱激发轻质泡沫混凝土性能的影响研究[J].混凝土与水泥制品,2023(10):66-71.

HU Z S,DONG J T,LIU Z Y.Study on the effect of red mud on properties of alkali activated lightweight foam concrete[J].China Concrete and Cement Products,2023(10):66-71.

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摘要

参数

结论

参考文献

引用本文

Abstract: In order to study the replacement of mineral powder with red mud on the macroscopic properties and microscopic mechanism of alkali activited foam concrete, the lightweight foam concrete(its density class is A04) with different contents of red mud was prepared by using red mud-Portland cement-slag terpolymer as the foam concrete matrix, the sodium hydroxide and sodium silicate solutions were used as activators, the nano-modified foaming agent was used as physical foaming. The laser displacement sensor, electron microscope, X-ray diffractometer and thermogravimetric analyzer were used to detect and characterize. The results show that the replacement of mineral powder with red mud is not conducive to the early stability of foam concrete, but when the content of red mud increases from 20% to 40%, the increment of final settlement in the first 90 min of foam concrete is small. The replacement of mineral powder with red mud will reduce the fluidity and compressive strength of foam concrete. When the content of red mud is 30%, the compressive strength of foam concrete will decrease at the lowest rate.

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赤泥对碱激发轻质泡沫混凝土性能的影响研究

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