[1]张娜,余红发,巩位,等.混凝土外加剂与碱式硫酸镁水泥适应性[J].东南大学学报(自然科学版),2019,49(1):53-60.[doi:10.3969/j.issn.1001-0505.2019.01.008]
 Zhang Na,Yu Hongfa,Gong Wei,et al.Suitability of concrete admixtures and basic magnesium sulfate cement[J].Journal of Southeast University (Natural Science Edition),2019,49(1):53-60.[doi:10.3969/j.issn.1001-0505.2019.01.008]
点击复制

混凝土外加剂与碱式硫酸镁水泥适应性()
分享到:

《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
49
期数:
2019年第1期
页码:
53-60
栏目:
化学化工
出版日期:
2019-01-20

文章信息/Info

Title:
Suitability of concrete admixtures and basic magnesium sulfate cement
作者:
张娜1余红发1巩位1麻海燕1黄泓萍2吴成友3
1南京航空航天大学土木工程系, 南京 210016; 2绍兴职业技术学院建筑与设计艺术学院, 绍兴 312000; 3青海大学土木工程学院, 西宁 810016
Author(s):
Zhang Na1 Yu Hongfa1 Gong Wei1 Ma Haiyan1 Huang Hongping2 Wu Chengyou3
1Department of Civil Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
2College of Architecture and Design, Shaoxing Vocational Technical Institute, Shaoxing 321000, China
3School of Civil Engineering, Qinghai University, Xining 810016, China
关键词:
碱式硫酸镁水泥 减水剂 消泡剂 5·1·7晶相 力学性能
Keywords:
basic magnesium sulfate cement water reducing agent defoamer 5·1·7 phase mechanical properties
分类号:
TQ177.5
DOI:
10.3969/j.issn.1001-0505.2019.01.008
摘要:
研究了普通混凝土减水剂与碱式硫酸镁水泥(MOSC)的适应性,通过消泡剂复配改善MOSC体系的力学性能.采用X射线衍射、扫描电子显微镜分析混凝土外加剂对MOSC力学性能、水化产物和微观结构的影响.实验结果表明,三聚氰胺(SM)、萘系(FDN)、氨基磺酸盐(ASP)和脂肪酸磺酸盐(SAF)均对MOSC产生减水效果,减水率分别为8.02%,12.35%,16.12%和11.77%.但减水剂会降低MOSC力学性能,FDN-MOSC体系1,28 d抗压强度分别为基准试样的64.5%和80.5%.消泡剂能够有效提高MOSC及减水剂-MOSC体系的早期强度,减少减水剂-MOSC体系的后期强度损失.单掺消泡剂A10-MOSC体系1,28 d抗压强度分别为基准试样的132.7%和95.7%,减水剂和消泡剂复合FDN-NXZ-MOSC体系1,28 d抗压强度分别为基准试样的120.8%和90.3%.普通混凝土外加剂没有改变MOSC水化产物组成,消泡剂能够有效提高MOSC和减水剂-MOSC体系的力学性能.
Abstract:
The suitability of water reducing agents for ordinary concrete and basic magnesium sulfate cement(MOSC)was studied. The mechanical properties of MOSC were improved by mixing water reducing agents with compound defoamers. The X-ray diffraction pattern and the scanning electron microscope were used to analyze the effects of concrete admixtures on the mechanical properties, the hydrated productions and the microstructure of MOSC. The experimental results show that melamine superplasticizer(SM), sulfonated naphthalene formaldehyde(FDN), aminosulfonic-based(ASP)and aliphatic sulphonate(SAF)have the effects of water reduction on MOSC, with the water reducing rate of 8.02%, 12.35%, 16.12% and 11.77%, respectively. However, the water reducing agents reduce the mechanical properties of MOSC. The compressive strengths of the FDN-MOSC(MOSC with FDN)system is 64.5% and 80.5% of that of the control specimen at 1 and 28 d, respectively. The defoamers can effectively improve the early compressive strengths of MOSC and the water reducing agents-MOSC system, and reduce the loss of the later compressive strength of the water reducing agent-MOSC system. The compressive strengths of the A10-MOSC(MOSC with A10 defoamer)system are 132.7% and 95.7% of that of the control specimen at 1 and 28 d, respectively. The compressive strengths of the FDN-NXZ-MOSC(MOSC mixed FDN and NXZ defoamer)system are 120.9% and 90.3% of that of the control sample at 1 and 28 d, respectively. The concrete admixtures can not change the composition of hydrated productions and the defoamers can effectively improve the mechanical properties of MOSC and the water reducing agent-MOSC system.

参考文献/References:

[1] 邓德华. 提高镁质碱式盐水泥性能的理论与应用研究[D]. 长沙: 中南大学, 2005.
  Deng D H. A study on the theories and techniques for improving the properties of MgO-based basic salt cements and their articles[D]. Changsha: Central South University, 2005.(in Chinese)
[2] Beaudoin J J, Ramachandran V S. Strength development in magnesium oxysulfate cement[J]. Cement and Concrete Research, 1978, 8(1): 103-112. DOI:10.1016/0008-8846(78)90063-7.
[3] Demediuk T, Cole W. A study of magnesium oxysulphates[J]. Australian Journal of Chemistry, 1957, 10(3): 287. DOI:10.1071/ch9570287.
[4] Chuayjuljit S, Rupunt T, Karnjanamayul T. Composites of polypropylene/pottery stone/magnesium oxysulfate[J]. Advanced Materials Research, 2012, 488-489: 643-647. DOI:10.4028/www.scientific.net/amr.488-489.643.
[5] Gomes C E M,Camarini G. Magnesium oxysulfate fiber cement[J]. Key Engineering Materials, 2014, 600: 308-318. DOI:10.4028/www.scientific.net/kem.600.308.
[6] Urwongse L, Sorrell C A. Phase relations in magnesium oxysulfate cements[J]. Journal of the American Ceramic Society, 1980, 63(9/10): 523-526. DOI:10.1111/j.1151-2916.1980.tb10757.x.
[7] Runˇ/cevski T, Wu C Y, Yu H F, et al. Structural characterization of a new magnesium oxysulfate hydrate cement phase and its surface reactions with atmospheric carbon dioxide[J]. Journal of the American Ceramic Society, 2013, 96(11): 3609-3616. DOI:10.1111/jace.12556.
[8] 冯乃谦. 高性能混凝土与超高性能混凝土的发展和应用[J]. 施工技术, 2009, 38(4): 1-6.
  Feng N Q. Development and application of high performance concrete and ultra-high performance concrete[J]. Construction Technology, 2009, 38(4): 1-6.(in Chinese)
[9] Ramachandran V S, Malhotra V M, Jolicoeur C. Super-plasticizers: Properties and applications in concrete [M]. Canada: Minister of Public Works and Government Services, 1998: 3-10.
[10] 汪宏涛, 钱觉时, 曹巨辉. 磷酸镁水泥基材料复合减水剂的应用研究[J]. 建筑材料学报, 2007, 10(1): 71-76. DOI:10.3969/j.issn.1007-9629.2007.01.013.
Wang H T,Qian J S, Cao J H. Study on the compound water reducing admixture of magnesia-phosphate cement-based material[J]. Journal of Building Materials, 2007, 10(1): 71-76. DOI:10.3969/j.issn.1007-9629.2007.01.013. (in Chinese)
[11] Tan H B, Zhang X,Guo Y L, et al. Improvement in fluidity loss of magnesia phosphate cement by incorporating polycarboxylate superplasticizer[J]. Construction and Building Materials, 2018, 165: 887-897. DOI:10.1016/j.conbuildmat.2017.12.214.
[12] 朱效甲, 朱玉杰, 朱效兵, 等. 氯氧镁水泥减水剂的试验研究与应用[J]. 新型建筑材料, 2017, 44(6): 109-112. DOI:10.3969/j.issn.1001-702X.2017.06.029.
Zhu X J, Zhu Y J, Zhu X B, et al. Experimental research and application of water reducing agent of magnesium oxychloride cement[J]. New Building Materials, 2017, 44(6): 109-112. DOI:10.3969/j.issn.1001-702X.2017.06.029. (in Chinese)
[13] 李振国, 董文俊, 刘江武, 等. 碱式硫酸镁水泥胶砂流动性及强度试验研究[J]. 硅酸盐通报, 2016, 35(10): 3101-3105. DOI:10.16552/j.cnki.issn/001-1625.2016.10.003.
Li Z G, Dong W J, Liu J W, et al. Experimental investigation on fluidity and strength property of basic magnesium sulfate cement mortars[J].Bulletin of the Chinese Ceramic Society, 2016, 35(10): 3101-3105. DOI:10.16552/j.cnki.issn/001-1625.2016.10.003. (in Chinese)
[14] 孙振平, 蒋正武, 范建东, 等. 氨基磺酸盐高性能减水剂的合成及应用[J]. 硅酸盐学报, 2005, 33(7): 864-870. DOI:10.3321/j.issn:0454-5648.2005.07.014.
Sun Z P, Jiang Z W, Fan J D, et al. Development and application of a sulphonated aminophenol based high-performance plasticizer[J]. Journal of the Chinese Ceramic Society, 2005, 33(7): 864-870. DOI:10.3321/j.issn:0454-5648.2005.07.014. (in Chinese)
[15] Dipak K D. Interaction of superplasticizer with C3A and cement clinker in presence or absence of gypsum or hemihydrate or anhydrite [J]. Indian Cement Review, 2005, 19(7):17-22.
[16] 楼宏铭, 梁悄, 张海彬, 等. 相对分子质量对脂肪族高效减水剂分散增强性能的影响[J]. 精细化工, 2010, 27(12): 1233-1238. DOI:10.13550/j.jxhg.2010.12.022.
Lou H M, Liang Q, Zhang H B, et al. Influence of molecular weight of sulfonated acetone-formaldehyde polycondensate on its dispersing performance[J]. Fine Chemicals, 2010, 27(12): 1233-1238. DOI:10.13550/j.jxhg.2010.12.022. (in Chinese)
[17] 王子明, 卢子臣, 路芳, 等. 梳形结构聚羧酸系减水剂主链长度对性能的影响[J]. 硅酸盐学报, 2013, 41(11): 1534-1539. DOI:10.7521/j.issn.0454-5648.2013.11.12.
Wang Z M, Lu Z C, Lu F, et al. Effect of backbone length on properties of comb-shaped structure polycarboxylate superplasticizers[J]. Journal of the Chinese Ceramic Society, 2013, 41(11): 1534-1539. DOI:10.7521/j.issn.0454-5648.2013.11.12. (in Chinese)
[18] Liu X, Guan J N, Lai G H, et al. Performances and working mechanism of a novel polycarboxylate superplasticizer synthesized through changing molecular topological structure[J]. Journal of Colloid and Interface Science, 2017, 504: 12-24. DOI:10.1016/j.jcis.2017.05.025.

备注/Memo

备注/Memo:
收稿日期: 2018-06-04.
作者简介: 张娜(1987—),女,博士生;余红发(联系人),男,博士,教授,博士生导师,yuhongfa@nuaa.edu.cn.
基金项目: 国家自然科学基金资助项目(21276264,51508272,U1407104).
引用本文: 张娜,余红发,巩位,等.混凝土外加剂与碱式硫酸镁水泥适应性[J].东南大学学报(自然科学版),2019,49(1):53-60. DOI:10.3969/j.issn.1001-0505.2019.01.008.
更新日期/Last Update: 2019-01-20