Enhancement of Compressive Strength and Durability of Sulfate-Attacked Concrete

被引：1
作者：
Han, Meiqin [1 ]
Li, Jianguo [2 ]
机构：
[1] Lyuliang Univ, Dept Architecture & Civil Engn, Lvliang 033001, Peoples R China
[2] Shanxi Inst Technol, Dept Civil Engn, Yangquan 045000, Peoples R China
来源：
BUILDINGS | 2024年 / 14卷 / 07期
关键词：
compressive strength; sulfate; concrete; chloride ion permeation coefficient; carbonation depth; LIMESTONE CEMENT CONCRETE; MINERAL ADMIXTURES; THAUMASITE FORM; RESISTANCE; DETERIORATION; PERFORMANCE; BEHAVIOR; CHLORIDE;
D O I：
10.3390/buildings14072187
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This experimental study is carried out in order to improve the properties of sulfate-attacked concrete. The concrete specimens were immersed in 15% Na2SO4 solution before being protected with a concrete repairing agent (CRA). The effects of sulfate corrosion time, the curing time after being attacked, and the concrete repairing agent on concrete were investigated. The experimental results indicate that the properties slightly increased after being attacked by sulfate for 60 days than for 30 days. However, they decreased after being attacked by sulfate for 90 days. CRA could effectively improve the properties of sulfate-attacked concrete. After being re-cured for 7 days, the properties of the sulfate-attacked concrete were significantly improved in comparison with those of the specimens taken out from the sulfate solution immediately. When the specimens were attacked for three months, the compressive strength of specimens coated with CRA was increased by 6.1%, 6.4%, and 6.4% compared to that of the specimens without CRA after being cured for 7 to 56 days, respectively. The carbonation depth of concrete specimens with CRA was reduced by 4.6%, 8.3%, and 4.9%, respectively. However, the chloride ion permeation coefficient of concrete with CRA decreased by 20.3%, 28.5%, and 28.7%, respectively, for the concrete immersed in sulfate for one month.
引用
收藏
页数：17
相关论文
共 35 条
  • [21] Resistance of concrete and mortar against combined attack of chloride and sodium sulphate
    Maes, Mathias
    De Belie, Nele
    [J]. CEMENT & CONCRETE COMPOSITES, 2014, 53 : 59 - 72
  • [22] External ammonium sulfate attack in concrete: Analysis of the current methodology
    Martins, Monalisa C.
    Langaro, Eloise A.
    Macioski, Gustavo
    Medeiros, Marcelo H. F.
    [J]. CONSTRUCTION AND BUILDING MATERIALS, 2021, 277
  • [23] Influence of biodeposition treatment on concrete durability in a sulphate environment
    Nosouhian, Farzaneh
    Mostofinejad, Dauood
    Hasheminejad, Hasti
    [J]. BIOSYSTEMS ENGINEERING, 2015, 133 : 141 - 152
  • [24] Effect of coarse aggregate size on corrosion of reinforced concrete exposed to carbonation and chloride ingress by electrochemical measurements
    Oliveira, Rafael L. N.
    Braganca, Mariana O. G. P.
    Medeiros-Junior, Ronaldo A.
    [J]. CONSTRUCTION AND BUILDING MATERIALS, 2022, 361
  • [25] Evolution of surface hardness of concrete under sulfate attack
    Ouyang, Wei-yi
    Chen, Jian-kang
    Jiang, Min-qiang
    [J]. CONSTRUCTION AND BUILDING MATERIALS, 2014, 53 : 419 - 424
  • [26] Durability of cement pastes exposed to external sulfate attack and leaching: Physical and chemical aspects
    Ragoug, Rim
    Metalssi, Othman Omikrine
    Barberon, Fabien
    Torrenti, Jean-Michel
    Roussel, Nicolas
    Divet, Loic
    de Lacaillerie, Jean-Baptiste d'Espinose
    [J]. CEMENT AND CONCRETE RESEARCH, 2019, 116 : 134 - 145
  • [27] Preparation and evaluation of polymer/clay nanocomposite surface treatments for concrete durability enhancement
    Scarfato, Paola
    Di Maio, Luciano
    Fariello, Maria Letizia
    Russo, Paola
    Incarnato, Loredana
    [J]. CEMENT & CONCRETE COMPOSITES, 2012, 34 (03) : 297 - 305
  • [28] Physical and microstructural aspects of sulfate attack on ordinary and limestone blended Portland cements
    Schmidt, Thomas
    Lothenbach, Barbara
    Romer, Michael
    Neuenschwander, Juerg
    Scrivener, Karen
    [J]. CEMENT AND CONCRETE RESEARCH, 2009, 39 (12) : 1111 - 1121
  • [29] Use of mineral admixtures to improve the resistance of limestone cement concrete against thaumasite form of sulfate attack
    Skaropoulou, A.
    Sotiriadis, K.
    Kakali, G.
    Tsivilis, S.
    [J]. CEMENT & CONCRETE COMPOSITES, 2013, 37 : 267 - 275
  • [30] The effect of chlorides on the thaumasite form of sulfate attack of limestone cement concrete containing mineral admixtures at low temperature
    Sotiriadis, K.
    Nikolopoulou, E.
    Tsivilis, S.
    Pavlou, A.
    Chaniotakis, E.
    Swamy, R. N.
    [J]. CONSTRUCTION AND BUILDING MATERIALS, 2013, 43 : 156 - 164
1234