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A platform for research: civil engineering, architecture and urbanism
Gemini surfactants as novel air entraining agents for concrete
AbstractThe development of high performance air entraining agents for concrete is of great importance. In this work, gemini surfactants (a new class of surfactants) have been utilized as air entraining agents for the first time. Three gemini surfactants modified with different anionic groups (sulfonic, sulfate and phosphate groups) were designed and synthesized. The surface tensions and foam heights of their solutions were tested. Using them as the air entraining agents, the air contents and air-void parameters of the cement mortars were tested. The study results clearly show that the gemini surfactants have higher surface activity, foamability, foam stability and air entraining performance compared with the corresponding single-chained surfactants, and the sulfate group modified gemini surfactant has the highest performance. These surfactants are tested merely as model compounds; however, they show higher air entraining ability compared with the benchmark surfactants used in the industry, indicating great potential for practical applications.
Graphical abstractWe report for the first time the applications of gemini surfactants (a new class of surfactants) in the air entraining agents for concrete.
Gemini surfactants as novel air entraining agents for concrete
AbstractThe development of high performance air entraining agents for concrete is of great importance. In this work, gemini surfactants (a new class of surfactants) have been utilized as air entraining agents for the first time. Three gemini surfactants modified with different anionic groups (sulfonic, sulfate and phosphate groups) were designed and synthesized. The surface tensions and foam heights of their solutions were tested. Using them as the air entraining agents, the air contents and air-void parameters of the cement mortars were tested. The study results clearly show that the gemini surfactants have higher surface activity, foamability, foam stability and air entraining performance compared with the corresponding single-chained surfactants, and the sulfate group modified gemini surfactant has the highest performance. These surfactants are tested merely as model compounds; however, they show higher air entraining ability compared with the benchmark surfactants used in the industry, indicating great potential for practical applications.
Graphical abstractWe report for the first time the applications of gemini surfactants (a new class of surfactants) in the air entraining agents for concrete.
Gemini surfactants as novel air entraining agents for concrete
Qiao, Min (author) / Chen, Jian (author) / Yu, Cheng (author) / Wu, Shishan (author) / Gao, Nanxiao (author) / Ran, Qianping (author)
Cement and Concrete Research ; 100 ; 40-46
2017-05-26
7 pages
Article (Journal)
Electronic Resource
English
Gemini surfactants as novel air entraining agents for concrete
| British Library Online Contents | 2017
Gemini surfactants as novel air entraining agents for concrete
| Online Contents | 2017
Gemini surfactants as novel air entraining agents for concrete
| British Library Online Contents | 2017
Gemini surfactants as novel air entraining agents for concrete
| British Library Online Contents | 2017
Engineering Index Backfile | 1948