改性水滑石对砂浆氯离子固化性能的影响_《混凝土与水泥制品》杂志社

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改性水滑石对砂浆氯离子固化性能的影响

Effect of modified hydrotalcite on solidification properties of chloride ions in mortar

2024年第8期

改性水滑石；砂浆；模拟海水；氯离子固化率；力学性能

Modified hydrotalcite; Mortar; Simulate seawater; Chlorine ion solidification rate; Mechanical property

2024年第8期

10.19761/j.1000-4637.2024.08.101.05

李永强

中国建材检验认证集团厦门宏业有限公司，福建厦门 361116

李永强

李永强.改性水滑石对砂浆氯离子固化性能的影响[J].混凝土与水泥制品,2024(8):101-105.

LI Y Q.Effect of modified hydrotalcite on solidification properties of chloride ions in mortar[J].China Concrete and Cement Products,2024(8):101-105.

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摘要：对水滑石进行了煅烧改性，并分析了煅烧温度（500、600、850 ℃）对水滑石微观性能的影响。研究了单Cl-模拟海水体系和Cl-、SO42-共存模拟海水体系下，改性水滑石掺量（0、3%、5%、7%）对砂浆氯离子固化能力、抗压强度的影响，同时进行了机理分析。结果表明：水滑石经过煅烧后会失去CO32-，导致层间位置空缺，最佳煅烧温度为500 ℃；与Cl-、SO42-共存模拟海水体系相比，单Cl-模拟海水体系下的氯离子固化率较大；随着改性水滑石掺量的增加，砂浆的氯离子固化率增大，抗压强度先增大后减小；综合考虑，改性水滑石最佳掺量宜为3%。 Abstract: The modification of hydrotalcite was carried out through calcination, and the influence of calcination temperature (500, 600, 850 ℃) on the microstructure properties of hydrotalcite was analyzed. The effects of modified hydrotalcite content (0, 3%, 5%, 7%) on the chloride ion solidification ability and compressive strength of mortar under single Cl- simulated seawater system and Cl- and SO42- coexisting simulated seawater system were studied, and the mechanism was analyzed. The results show that after calcination, hydrotalcite will lose CO32-, leading to interlayer vacancy, and the optimal calcination temperature is 500 ℃. Compared with the Cl- and SO42- coexisting simulated seawater system, the chloride ion solidification rate is higher in the single Cl- simulated seawater system. With the increase of modified hydrotalcite content, the chloride ion solidification rate of mortar increases, and the compressive strength first increases and then decreases. Taking all factors into consideration, the optimal content of modified hydrotalcite should be 3%.

英文名 : Effect of modified hydrotalcite on solidification properties of chloride ions in mortar

刊期 : 2024年第8期

关键词 : 改性水滑石；砂浆；模拟海水；氯离子固化率；力学性能

Key words : Modified hydrotalcite; Mortar; Simulate seawater; Chlorine ion solidification rate; Mechanical property

刊期 : 2024年第8期

DOI : 10.19761/j.1000-4637.2024.08.101.05

文章编号 :

基金项目 :

作者 : 李永强

单位 : 中国建材检验认证集团厦门宏业有限公司，福建厦门 361116

李永强

李永强.改性水滑石对砂浆氯离子固化性能的影响[J].混凝土与水泥制品,2024(8):101-105.

LI Y Q.Effect of modified hydrotalcite on solidification properties of chloride ions in mortar[J].China Concrete and Cement Products,2024(8):101-105.

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摘要

参数

结论

参考文献

引用本文

Abstract: The modification of hydrotalcite was carried out through calcination, and the influence of calcination temperature (500, 600, 850 ℃) on the microstructure properties of hydrotalcite was analyzed. The effects of modified hydrotalcite content (0, 3%, 5%, 7%) on the chloride ion solidification ability and compressive strength of mortar under single Cl- simulated seawater system and Cl- and SO42- coexisting simulated seawater system were studied, and the mechanism was analyzed. The results show that after calcination, hydrotalcite will lose CO32-, leading to interlayer vacancy, and the optimal calcination temperature is 500 ℃. Compared with the Cl- and SO42- coexisting simulated seawater system, the chloride ion solidification rate is higher in the single Cl- simulated seawater system. With the increase of modified hydrotalcite content, the chloride ion solidification rate of mortar increases, and the compressive strength first increases and then decreases. Taking all factors into consideration, the optimal content of modified hydrotalcite should be 3%.

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