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Development of a New Type of Green Switch Air Entraining Agent for Wet-Mix Shotcrete and Its Engineering Application
Joint Authors
Source
Advances in Materials Science and Engineering
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-08-30
Country of Publication
Egypt
No. of Pages
9
Abstract EN
Air entraining agent (AEA) can bring a lot of microbubbles into fresh concrete for improving its fluidity; however, high fluidity has adverse effect on the shootability of wet-mix shotcrete.
In order to solve the contradictory issue, the paper developed a new type of green switch air entraining agent (GSAE) that can improve both the pumpability and shootability.
The single-admixture and combination tests containing foaming ability and surface tension were performed with Deer agitator and automatic tension meter.
The new AEA was developed with two constituents A and B.
A was prepared with Sapindus mukorossi(S-1), dodecyl trimethyl ammonium chloride(1231), and polyacrylamide.
B was prepared with lauryl sodium sulfate (K12) and silicone oil.
The mass mix proportion was S-1 : 1231 : polyacrylamide : K12 : silicone oil = 1 : 0.33 : 0.2 : 0.33 : 0.47.
The application method of GSAE proposed that A was premixed with fresh concrete and then B was added at nozzle.
Experimental investigation showed that the optimal mixing amount of GSAE was 0.1%–0.2% relative to cement.
All performance measured of wet-mix shotcrete with 0.12% GSAE met the first-grade product requirements of the China National Standard.
Compared with the conventional type of AEA, the proposed GSAE is capable of effectively improving pumpability and shootability.
American Psychological Association (APA)
Liu, Guoming& Chen, Lianjun. 2016. Development of a New Type of Green Switch Air Entraining Agent for Wet-Mix Shotcrete and Its Engineering Application. Advances in Materials Science and Engineering،Vol. 2016, no. 2016, pp.1-9.
https://search.emarefa.net/detail/BIM-1096333
Modern Language Association (MLA)
Liu, Guoming& Chen, Lianjun. Development of a New Type of Green Switch Air Entraining Agent for Wet-Mix Shotcrete and Its Engineering Application. Advances in Materials Science and Engineering No. 2016 (2016), pp.1-9.
https://search.emarefa.net/detail/BIM-1096333
American Medical Association (AMA)
Liu, Guoming& Chen, Lianjun. Development of a New Type of Green Switch Air Entraining Agent for Wet-Mix Shotcrete and Its Engineering Application. Advances in Materials Science and Engineering. 2016. Vol. 2016, no. 2016, pp.1-9.
https://search.emarefa.net/detail/BIM-1096333
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1096333