Novel Admixture Using to Control the Hydration Evolution and Temperature Rise of Concrete
Author(s): Wenbin Wang, Jiaping Liu, Lei Li, Cheng Yu, Xiaolei Zhang,
Quanlong Li and Rui Wang
Paper category: Proceedings
Book title: 3rd International RILEM Conference on Microstructure Related Durability of Cementitious Composites
Editor(s): Changwen Miao, Wei Sun, Jiaping Liu, Huisu Chen, Guang Ye and Klaas van Breugel
Publisher: RILEM Publications SARL
Publication year: 2016
Total Pages : 8
Language : English
Abstract: In this research, a novel admixture, named as concrete temperature reducing agent (TRA) was used to control the rate of cement hydration. The effects of TRA on the hydration of cement under isothermal and adiabatic conditions were investigated by isothermal calorimeter and adiabatic temperature rise tester. The effects of TRA on phase composition of the cement paste during hydration were determined by XRD and the results indicated that the TRA significantly reduced the hydration of C3S and the formation of Ca(OH)2 in early ages. The
monitor results of temperature histories in 400×400×400mm concrete cubes insulated by extruded polystyrene board were reduced by 38% about 10.4℃ by addition of 0.3% TRA.
Additionally, the TRA had no negative effect on the long-term strength of concrete.
Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00