作者：杨健¹, 郝春来¹, 卢杨¹, 赫丽杰¹, 苏锐²

作者单位：1. 营口理工学院材料科学与工程学院，辽宁 营口115014;
2. 辽宁广物钢铁有限公司，辽宁 沈阳 110020

关键词：外加剂;硫氧镁水泥;泡沫混凝土;抗压强度;耐水性;软化系数

摘要：

该文研究磷酸三钠、葡萄糖、有机酸C、有机酸盐D四种外加剂复掺对硫氧镁水泥泡沫混凝土抗压强度和耐水性的影响。并采用XRD、SEM表征硫氧镁水泥泡沫混凝土试样的物相组成和微观结构。结果表明，适当掺量的四种外加剂都能提高硫氧镁水泥泡沫混凝土抗压强度及耐水性，有机酸C对硫氧镁水泥泡沫混凝土抗压强度影响较大，有机酸C掺量为0.6%时，试块28 d抗压强度达到1.91 MPa；磷酸三钠可以有效改善硫氧镁水泥泡沫混凝土耐水性，当磷酸三钠掺量0.6%时，试块软化系数达 0.8；复掺外加剂试样强度与耐水性得到提升，其28 d抗压强度达到2.1 MPa，是不掺外加剂试样的1.58倍，其软化系数达 0.92。

Effect of additives on properties of magnesium sulfate cement foam concrete
YANG Jian¹, HAO Chunlai¹, LU Yang¹, HE Lijie¹, SU Rui²
1. School of Materials Science and Engineering, Yingkou Institute of Technology, Yingkou 115014, China;
2. Liaoning Guangwu Iron and Steel Limited Company, Shenyang 110020, China
Abstract: The effects of trisodium phosphate, glucose, organic acid C, organic acid D and four admixtures on the compressive strength and water resistance of magnesium sulfate cement foamed concrete were studied. The phase composition and microstructure of mgo cement foamed concrete were characterized by XRD and SEM. The results show that the compressive strength and water resistance of mgo cement foamed concrete can be improved by adding four kinds of admixtures in proper amount, and organic acid C has a great influence on the compressive strength of MGO cement foamed concrete. When the content of organic acid C is 0.6% , the compressive strength of MGO cement foamed concrete can be improved by adding four kinds of admixtures in proper amount, the compressive strength of the 28-day specimen was 1.91 MPa, the trisodium phosphate could effectively improve the water resistance of the foamed concrete, and the softening coefficient of the specimen was 0.8 when the trisodium phosphate content was 0.6% , and the strength and water resistance of the specimen were enhanced when the admixture was added, the compressive strength at 28 d is 2.1 MPa, which is 1.58 times of the sample without additive, and the softening coefficient is 0.92.
Keywords: admixtures;magnesium oxysulfide cement;foam concrete;compressive strength;water resistance;softening coefficient
2024, 50(3):75-83  收稿日期: 2022-07-29;收到修改稿日期: 2022-10-24
基金项目: 辽宁省教育厅2023年度基本科研项目面上项目（JYTMS20230068）；辽宁省首批高质量产学合作协同育人项目（营口理工学院第四批产教融合项目（2023CJRH0409））；营口理工学院校级创新训练计划项目（X202314435004）
作者简介: 杨健(1991-),男,辽宁昌图县人,讲师,硕士,研究方向为新型无机非金属材料的制备与研究。
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