温度、相对湿度循环下砂浆的硫酸盐半浸泡损伤机理研究

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发布时间：2020-01-06 00:00:00

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温度、相对湿度循环下砂浆的硫酸盐半浸泡损伤机理研究

Study on the damage mechanism of mortar partially soaked in sulfate under temperature and humidity cycling

2025年第2期

温度；相对湿度；循环；砂浆；硫酸盐；半浸泡

Temperature; Relative humidity; Cycling; Mortar; Sulfate; Partially soaked

2025年第2期

10.19761/j.1000-4637.2025.02.008.05

国家自然科学基金项目（52171254）。

杨枫林1，赵亚松2，陈菲2，贺知章2，高建明2，*

1.南通市建设混凝土有限公司，江苏南通226000；2.东南大学材料科学与工程学院，江苏南京 211100

杨枫林1，赵亚松2，陈菲2，贺知章2，高建明2，*

杨枫林,赵亚松,陈菲,等.温度、相对湿度循环下砂浆的硫酸盐半浸泡损伤机理研究[J].混凝土与水泥制品,2025(2):8-12.

YANG F L,ZHAO Y S,CHEN F,et al.Study on the damage mechanism of mortar partially soaked in sulfate under temperature and humidity cycling[J].China Concrete and Cement Products,2025(2):8-12.

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摘要：研究了不同温度、相对湿度条件下砂浆试件半浸泡在硫酸钠溶液中的损伤劣化规律，进行了试件的质量变化率、相对动弹性模量测试，并采用扫描电子显微镜、X射线衍射、X射线断层扫描、压汞仪法分析了硫酸盐侵蚀机理。结果表明：试件浸泡部分主要受到硫酸盐化学侵蚀，而干燥部分（未浸泡）主要受到硫酸盐物理侵蚀（膨胀）；温度循环和相对湿度循环均能加速硫酸盐侵蚀，但不改变试件损伤劣化的发展趋势；试件的质量变化率和相对动弹性模量总体上均呈先增后降的趋势；温度循环、相对湿度循环能显著影响试件中10 nm~10 μm毛细孔的孔隙率，但对凝胶孔和大孔的影响相对较小。 Abstract: The damage and deterioration laws of mortar specimens partially soaked in sodium sulfate solution under different temperature and relative humidity conditions were studied. The mass change rate and relative dynamic elastic modulus of the specimens were tested, and the sulfate corrosion mechanism was analyzed using scanning electron microscopy, X-ray diffraction, X-ray tomography, and mercury intrusion porosimetry. The results show that the partially soaked specimen is mainly subjected to sulfate chemical erosion, while the dry part(not soaked) is mainly subjected to sulfate physical erosion(expansion). Both temperature cycling and relative humidity cycling can accelerate sulfate corrosion, but do not change the development trend of specimen damage and deterioration. The overall trend of the mass change rate and relative dynamic elastic modulus of the specimens is increasing first and then decreasing. Temperature cycling and relative humidity cycling can significantly affect the porosity of 10 nm~10 μm capillary pores in the specimen, but have relatively little effect on gel pores and macropores.

英文名 : Study on the damage mechanism of mortar partially soaked in sulfate under temperature and humidity cycling

刊期 : 2025年第2期

关键词 : 温度；相对湿度；循环；砂浆；硫酸盐；半浸泡

Key words : Temperature; Relative humidity; Cycling; Mortar; Sulfate; Partially soaked

刊期 : 2025年第2期

DOI : 10.19761/j.1000-4637.2025.02.008.05

文章编号 :

基金项目 : 国家自然科学基金项目（52171254）。

作者 : 杨枫林1，赵亚松2，陈菲2，贺知章2，高建明2，*

单位 : 1.南通市建设混凝土有限公司，江苏南通226000；2.东南大学材料科学与工程学院，江苏南京 211100

杨枫林1，赵亚松2，陈菲2，贺知章2，高建明2，*

杨枫林,赵亚松,陈菲,等.温度、相对湿度循环下砂浆的硫酸盐半浸泡损伤机理研究[J].混凝土与水泥制品,2025(2):8-12.

YANG F L,ZHAO Y S,CHEN F,et al.Study on the damage mechanism of mortar partially soaked in sulfate under temperature and humidity cycling[J].China Concrete and Cement Products,2025(2):8-12.

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结论

参考文献

引用本文

Abstract: The damage and deterioration laws of mortar specimens partially soaked in sodium sulfate solution under different temperature and relative humidity conditions were studied. The mass change rate and relative dynamic elastic modulus of the specimens were tested, and the sulfate corrosion mechanism was analyzed using scanning electron microscopy, X-ray diffraction, X-ray tomography, and mercury intrusion porosimetry. The results show that the partially soaked specimen is mainly subjected to sulfate chemical erosion, while the dry part(not soaked) is mainly subjected to sulfate physical erosion(expansion). Both temperature cycling and relative humidity cycling can accelerate sulfate corrosion, but do not change the development trend of specimen damage and deterioration. The overall trend of the mass change rate and relative dynamic elastic modulus of the specimens is increasing first and then decreasing. Temperature cycling and relative humidity cycling can significantly affect the porosity of 10 nm~10 μm capillary pores in the specimen, but have relatively little effect on gel pores and macropores.

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[1] HAYNES H,ONEILL R,NRFF M,et al.Salt weathering of concrete by sodium carbonate and sodium chloride[J].ACI Materials Journal,2010,107(3):258.
[2] 张淑媛.复杂环境下混凝土硫酸盐侵蚀机理[D].青岛:青岛理工大学,2014.
[3] HAYNES H,ONEILL R,NRFF M, et al.Salt weathering distress on concrete exposed to sodium sulfate environment[J].ACI Materials Journal,2008,105(1):35-43.
[4] HAYNES H.Sulfate attack on concrete: laboratory vs. field experience[J].Concrete International,2002,24(7):64-70.
[5] 金祖权,孙伟,赵铁军,等.混凝土在硫酸盐-氯盐环境下的损伤失效研究[J].东南大学学报(自然科学版),2006(2):200-204.
[6] METHA P K.Mechanism of sulfate attack on Portland cement concrete—Another look[J].Cement and Concrete Research,1983,13(3):401-406.
[7] ODLER I,GASSER M.Mechanism of sulfate expansion in hydrated Portland cement[J].Journal of the American Ceramic Society,1988,71(11):1015-1020.
[8] COHEN M D.Theories of expansion in sulfoaluminate-type expansive cements: Schools of thought[J].Cement and Concrete Research,1983,13(6):809-818.
[9] 王学兵,郭声波,潘志华.硫酸盐环境下水泥砂浆的腐蚀产物及孔结构研究[J].混凝土与水泥制品,2024(2):28-30,40.
[10] CHEN F,GAO J,QI B,et al.Degradation progress of concrete subject to combined sulfate-chloride attack under drying-wetting cycles and flexural loading[J].Construction and Building Materials,2017,151:164-171.
[11] NEHDI M L,SULEIMAN A R,SOLIMAN A M.Investigation of concrete exposed to dual sulfate attack[J].Cement and Concrete Research,2014,64:42-53.
[12] CHEN F,GAO J M,QI B,et al.Deterioration mechanism of plain and blended cement mortars partially exposed to sulfate attack[J].Construction and Building Materials,2017,154:849-856.
[13] 杨钱荣,唐越,华夏.掺复合掺合料混凝土抗硫酸盐侵蚀性能研究[J].粉煤灰综合利用,2010(2):3-6.
[14] LIU Z,DENG D,SCHUTTER G D,et al.Chemical sulfate attack performance of partially exposed cement and cement+fly ash paste[J].Construction and Building Materials,2012,28(1):230-237.
[15] 杨全兵,杨钱荣.硫酸钠盐结晶对混凝土破坏的影响[J].硅酸盐学报,2007(7):877-880,885.
[16] SHAMAA M A,LAVAUD S,DIVET L,et al.Influence of relative humidity on delayed ettringite formation[J].Cement and Concrete Composites,2015,58:14-22.
[17] 黄巍林,马志鸣,赵铁军,等.混凝土在海洋环境下硫酸盐侵蚀机理研究[J].混凝土与水泥制品,2014(7):17-20.
[18] 张少辉,王艳,郭冰冰,等.温度场与硫酸盐侵蚀耦合作用混凝土孔结构分形特征演化规律[J].硅酸盐学报,2024,52(2):474-484.
[19] NILSSON L O,OLLIVIER J P.Chloride transport due to wick action in concrete[M].Sweden:RILEM Publications SARL,1995.
[20] SNOECK D,VELASCO L F,MIGNON A,et al.The effects of superabsorbent polymers on the microstructure of cementitious materials studied by means of sorption experiments[J].Cement and Concrete Research,2015,77:26-35.

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