Study on the Alkali-Free Liquid Accelerator

Abstract:

Based on orthogonal design method, a kind of alkali-free liquid accelerator is successfully developed by adopting aluminum sulfate, DL-Lactic acid, triethanolamine, glycerol, phosphoric acid and other raw materials. The initial setting time of the accelerator is 2min50s, and final setting time is 6min30s. The compressive strength ratio of 28 days is 103.5%. All the indices meet the first class requirements in Flash setting admixtures for shotcrete (JC477-2005). It is also provided with better adaptability. Finally XRD testing method is adopted to reveal the fast-setting mechanism of alkali-free accelerator.

• Periodical: Applied Mechanics and Materials (Volumes 584-586)
• Pages: 1264-1270
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.584-586.1264
• Online since: July 2014
• Authors: Ji Liang Wang*, Jing Liang Song, Kang Liu, Da Peng Wang
• Keywords: Accelerator, Alkali-Free, Aluminum Sulfate, Concrete, Mechanism

References

[1] LIU Bo, TAO Longguang, LI Weiwei, etc. Journal of China Coal Society, 2000, 25 (1): 46~50. (In Chinese).

[2] MA Zhongcheng, WANG Lan, MA Jingyu. Concrete, 2011 (12): 126-128. (In Chinese).

[3] ZHU Guangbing. Concrete, 2011 (4): 105～109. (In Chinese).

[4] WANG Hui, ZHANG Yunqing. Journal of Jilin Architectural and Civil Engineering Institute, 1997(2): 27~29. (In Chinese).

[5] SUN Kai, TAO Li, LI Li, LIU Zhi. Concrete, 2005(2): 59~62. (In Chinese).

[6] TANG Ming, TONG Yu, WANG Bo. Journal of Shenyang Arch. and Civ. Eng. Inst., 1998, 14(3): 209-214. (In Chinese).

[7] PAN Zhihua, XU Yongdong, WU Chengzhen, etc. Journal of Nanjing University of Chemical Technology, 1997, 19 ( 2): 63～67. (In Chinese).

[8] LIU Meiyan, HE Zhen, CAI Xinhua, CHEN Xiaorun. New Buiding Materials, 2012( 6): 36~40. (In Chinese).