活性MgO含量对改性硫氧镁水泥强度的影响及机理分析

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发布时间：2020-01-06 00:00:00

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活性MgO含量对改性硫氧镁水泥强度的影响及机理分析

Effect and mechanism analysis of active MgO content on the strength of modified magnesium thioxide cement

2023年第7期

改性硫氧镁水泥；活性MgO；抗压强度；水化产物

Modified magnesium thioxide cement; Active MgO; Compressive strength; Hydration product

2023年第7期

10.19761/j.1000-4637.2023.07.018.05

山东省重点研发计划项目（公益性科技攻关类）（2019GSF109108）。

刘冲昊1，岳雪涛2，翟庆振1，于成鑫2,王硕2，闫浩康2，傅培林2

1.济南能源工程集团有限公司，山东济南 250101；2.山东建筑大学材料科学与工程学院，山东济南 250101

刘冲昊1，岳雪涛2，翟庆振1，于成鑫2,王硕2，闫浩康2，傅培林2

刘冲昊,岳雪涛,翟庆振,等.活性MgO含量对改性硫氧镁水泥强度的影响及机理分析[J].混凝土与水泥制品,2023(7):18-22.

LIU C H,YUE X T,ZHAI Q Z,et al.Effect and mechanism analysis of active MgO content on the strength of modified magnesium thioxide cement[J].China Concrete and Cement Products,2023(7):18-22.

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摘要：研究了不同活性MgO含量（60.4%、46.7%、45.9%）对改性硫氧镁水泥强度的影响规律，并结合XRD、SEM等方法分析了其影响机理。结果表明：改性硫氧镁水泥试件的抗压强度均随n（MgO）∶n（MgSO4）的增大而增大；用活性含量为45.9%的MgO制备的水泥试件各龄期抗压强度均高于活性含量为46.7%和60.4%的MgO；改性硫氧镁水泥样品的主要成分为MgO、Mg(OH)2和5Mg(OH)2·MgSO4·7H2O 相（5·1·7相），随着养护时间的延长，5·1·7相的衍射峰增强；样品内生成大量针棒状晶体，存在较多空隙。 Abstract: The effect of different active MgO content(60.4%、46.7%、45.9%) on the strength of modified magnesium thioxide cement were studied, and the influence mechanism was analyzed by XRD, SEM and other methods. The results show that the compressive strength of the modified magnesium thioxide cement specimens with different active MgO content increases with the increase of n(MgO)∶n(MgSO4). The compressive strength of cement samples prepared with 45.9% active MgO is higher than that of 46.7% and 60.4% at each age. There are MgO、Mg(OH)2 and 5Mg(OH)2·MgSO4·7H2O(5·1·7 phase) in modified magnesium thioxide cement samples. The longer curing time, the higher diffraction peak of 5·1·7 phase. There are needle-like crystals in the sapmles and there are much pores in it.

英文名 : Effect and mechanism analysis of active MgO content on the strength of modified magnesium thioxide cement

刊期 : 2023年第7期

关键词 : 改性硫氧镁水泥；活性MgO；抗压强度；水化产物

Key words : Modified magnesium thioxide cement; Active MgO; Compressive strength; Hydration product

刊期 : 2023年第7期

DOI : 10.19761/j.1000-4637.2023.07.018.05

文章编号 :

基金项目 : 山东省重点研发计划项目（公益性科技攻关类）（2019GSF109108）。

作者 : 刘冲昊1，岳雪涛2，翟庆振1，于成鑫2,王硕2，闫浩康2，傅培林2

单位 : 1.济南能源工程集团有限公司，山东济南 250101；2.山东建筑大学材料科学与工程学院，山东济南 250101

刘冲昊1，岳雪涛2，翟庆振1，于成鑫2,王硕2，闫浩康2，傅培林2

刘冲昊,岳雪涛,翟庆振,等.活性MgO含量对改性硫氧镁水泥强度的影响及机理分析[J].混凝土与水泥制品,2023(7):18-22.

LIU C H,YUE X T,ZHAI Q Z,et al.Effect and mechanism analysis of active MgO content on the strength of modified magnesium thioxide cement[J].China Concrete and Cement Products,2023(7):18-22.

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摘要

参数

结论

参考文献

引用本文

摘要：研究了不同活性MgO含量（60.4%、46.7%、45.9%）对改性硫氧镁水泥强度的影响规律，并结合XRD、SEM等方法分析了其影响机理。结果表明：改性硫氧镁水泥试件的抗压强度均随n（MgO）∶n（MgSO₄）的增大而增大；用活性含量为45.9%的MgO制备的水泥试件各龄期抗压强度均高于活性含量为46.7%和60.4%的MgO；改性硫氧镁水泥样品的主要成分为MgO、Mg(OH)₂和5Mg(OH)₂·MgSO₄·7H₂O 相（5·1·7相），随着养护时间的延长，5·1·7相的衍射峰增强；样品内生成大量针棒状晶体，存在较多空隙。

Abstract: The effect of different active MgO content(60.4%、46.7%、45.9%) on the strength of modified magnesium thioxide cement were studied, and the influence mechanism was analyzed by XRD, SEM and other methods. The results show that the compressive strength of the modified magnesium thioxide cement specimens with different active MgO content increases with the increase of n(MgO)∶n(MgSO₄). The compressive strength of cement samples prepared with 45.9% active MgO is higher than that of 46.7% and 60.4% at each age. There are MgO、Mg(OH)₂ and 5Mg(OH)₂·MgSO₄·7H₂O(5·1·7 phase) in modified magnesium thioxide cement samples. The longer curing time, the higher diffraction peak of 5·1·7 phase. There are needle-like crystals in the sapmles and there are much pores in it.

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[1] WU C Y,YUH F,DONG J M.Effects of phosphoric acid and phosphates on magnesium oxysulfate cement[J].Materials and Structures,2015,48(4):907-917.
[2] 吴成友,邢赛男,张吾渝,等.碱式硫酸镁水泥水化规律研究[J].功能材料,2016,47(11):1120-1124,1130.
[3] 吴成友.碱式硫酸镁水泥的基本理论及其在土木工程中的应用技术研究[D].西宁:中国科学院青海盐湖研究所,2014.
[4] 曾翔超,余红发.钢筋碱式硫酸镁水泥混凝土梁抗弯性能试验研究[J].哈尔滨工程大学学报,2018,39(12):1933-1940.
[5] 杨三强,麻海燕,余红发,等.碱式硫酸镁水泥混凝土力学性能试验研究[J].硅酸盐通报,2016,35(8):2548-2555.
[6] QIN L,GAO X J,CHEN T F.Recycling of raw rice husk to manufacturemagnesium oxysulfate cement based lightweight building materials[J].Journal of Cleaner Production,2018,191:220-232.
[7] 陈远基,吴成友,陈方宇,等.菱苦土对轻烧白云石制备碱式硫酸镁水泥影响的研究[J].硅酸盐通报,2018,37(8):2506-2511.
[8] ZHOU X,LI Z.Light-weight wood-magnesium oxychloride cement composite building products made by extrusion[J].Construction and Building Materials,2012,27(1):382-389.
[9] 王爱国,楚英杰,徐海燕,等.碱式硫酸镁水泥的研究进展及性能提升技术[J].材料导报,2020,34(13):13091-13099.
[10] 黄泓萍,余红发,张娜,等.碱式硫酸镁水泥的配料规律与基本物理力学性能研究[J].硅酸盐通报,2016,35(8):2561-2574.
[11] 李振国,刘博,吴运强,等.碱式硫酸镁水泥耐酸腐蚀性能研究[J].材料导报,2018,32(8):2733-2737.
[12] WANG N,YU H F,BI W L.Effects of sodium citrate and citric acid on the properties of magnesium oxysulfate cement[J].Construction and Building Materials,2018,169:697-704.
[13] 姜黎黎,刘江武,董文进,等.柠檬酸掺量对硫氧镁水泥耐水性的影响[J].硅酸盐通报,2016,35(12):4093-4096.
[14] GUO T,WANG H F,YANG H J.The mechanical properties of magnesium oxysulfate cement enhanced with 5·1·7 phase magnesium oxysulfate whiskers[J].Construction and Building Materials,2017,150:844-850.
[15] 罗如学,范文强,李春庆,等.苹果酸改性发泡硫氧镁水泥[J].硅酸盐学报,2020,48(2):222-230.
[16] 安生霞,肖学英,李颖,等.硼酸对硫氧镁水泥力学性能的影响[J].盐湖研究,2017,25(4):72-78.
[17] 吴潇潇,岂珊珊,常婷婷,等.丙二酸对硫氧镁水泥力学性能和耐水性的影响[J].硅酸盐通报,2019,38(9):2731-2736.
[18] XU X,XU Y Y,DUAN L L.Effect of fineness and components of CFBC ash on performance of basic magnesium sulfate cement[J].Construction and Building Materials,2018,170:801-811.
[19] 崔宝栋,关岩,毕万利,等.不同矿物掺料对硫氧镁水泥耐热性能的影响[J].硅酸盐通报,2020,39(2):428-434.
[20] 黄泓萍.碱式硫酸镁水泥的配料规律与基本性能[D].南京:南京航天航空大学,2016.
[21] 邢赛男,吴成友,余红发.玻璃纤维增强碱式硫酸镁水泥的加速老化试验与微观机理[J].硅酸盐通报,2018,37(2):411-416.
[22] 董文俊.混凝土路面修补用聚合物改性碱式硫酸镁水泥路用性能[D].哈尔滨:哈尔滨理工大学,2017.
[23] 李振国,余四文,刘同海,等.活性MgO含量对碱式硫酸镁水泥强度及水化产物影响[J].硅酸盐通报,2017,36(7):2259-2272,2276.
[24] 吴成友,邢赛南,张吾渝,等.碱式硫酸镁水泥水化规律研究[J].功能材料,2016,47(11):11120-11124,11130.
[25] 吴成友,苗梦,余红发.MgO活性和配比对碱式硫酸镁水泥强度影响机理[J].建筑材料学报,2022,25(4):360-366.

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