Effect of Air Entraining Agent on Properties of Aqueous Solutions and Concretes

被引：0
|
作者：
Shan G. [1 ]
Lu C. [2 ]
Chen J. [1 ]
Gao N. [1 ]
Qiao M. [1 ]
Ran Q. [1 ,3 ]
Liu J. [1 ,3 ]
机构：
[1] State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Sobute New Materials Co. Ltd., Nanjing
[2] China Three Gorges Corporation, Beijing
[3] School of Material Science and Engineering, Southeast University, Nanjing
来源：
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2020年 / 48卷 / 08期
关键词：
Air entraining agent; Air-void; Foam; Interfacial free energy; Surface activity;
D O I：
10.14062/j.issn.0454-5648.20200003
中图分类号：
学科分类号：
摘要：
Alkyl sulfate surfactants with different hydrophobic chains (i.e., C8-C14) and surfactants with different anionic groups (i.e., sulfate, sulfonate and phosphate) were analyzed, and the effects of hydrophobicity and ionic groups on the surface activity, foam behavior and air-entraining performance in cement mortars were investigated. The results show that the more intense interfacial self-assembly behavior of surfactants can reduce the interfacial free energy and increase the surface activity, thus resulting ina greater foaming property of aqueous solutions and a higher air entraining performance in cement mortars. Sodium lauryl sulfate has the maximum interfacial self-assembly density, the minimum interfacial free energy, and the superior air entraining performance in aqueous solutions and cement mortars, as well as the optimum air-void adjustment performance of hardened cement mortars. © 2020, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
引用
收藏
页码：1256 / 1262
页数：6
相关论文
共 15 条
  • [1] YANG Y, RAN Q P, MAO Y L, Et al., New Build Mater, 4, pp. 65-69, (2013)
  • [2] SOUZA M T, MAYKOT C K, ARAUJO A C Z, Et al., Electrolytes' influence on foamability and foam stability of cement suspensions, Constr Build Mater, 157, pp. 363-371, (2017)
  • [3] RODRIGUES F A, JOEKES I., Water reducing agents of low-molecular-weight-suppression of air entrapment and slump loss by addition of an organic-solvent, CemConcr Res, 24, pp. 987-992, (1994)
  • [4] HE Z M, LIU J Z, WANG T H., Influence of air entraining agent on performance of inorganic thermal insulating mortar, Appl Mech Mater, 71, 78, pp. 490-493, (2011)
  • [5] WANG X P, YE J D, LI X, Et al., Production of in-situ macropores in an injectable calcium phosphate cement by introduction of cetyltrimethyl ammonium bromide, J Mater Sci-Mater, 19, pp. 3221-3225, (2008)
  • [6] DU L X, FOLLIARD K J., Mechanisms of air entrainment in concrete, CemConcr Res, 35, pp. 1463-1471, (2005)
  • [7] CUI F K, SHANG H S, ZHAO T J, Et al., Mechanical and failure criteria of air-entrained concrete under triaxial compression load after rapid freeze-thaw cycles, Adv Mater Sci Eng, 1, pp. 1-8, (2017)
  • [8] MENGER F M, KEIPER J S, AZOV V., Gemini surfactants with acetylenic spacers, Langmuir, 16, pp. 2062-2067, (2000)
  • [9] TEHRANI-BAGHA A R, HOLMBERG K, VAN GINKEL C G, Et al., Cationic gemini surfactants with cleavable spacer: Chemical hydrolysis, biodegradation, and toxicity, Colloid Interface Sci, 449, pp. 72-79, (2015)
  • [10] ZHOU Q, ROSEN M J., Molecular interactions of surfactants in mixed monolayers at the air/aqueous solution interface and in mixed micelles in aqueous media: The regular solution approach, Langmuir, 19, pp. 4555-4562, (2003)
12