Effect of setting accelerator to the initial strength of mortar with blast furnace slag cement

2017 International Conference on Building Materials and Materials Engineering

材料科学;土木建筑工程

Takehisa, D.^1 ; Nakajima, N.^1 ; Uno, Y.^2 ; Date, S.^1

Tokai University, Department of Civil Engineering, Hiratsuka City, Japan^1

Sato Kogyo Co., Ltd., Department of Civil Engineering, Atsugi City, Japan^2

关键词: Calcium nitrate;    Construction procedures;    Construction works;    Early age;    Early strength;    Promoting effect;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/264/1/012003/pdf
DOI  :  10.1088/1757-899X/264/1/012003

来源: IOP

【 摘 要 】

Effect of three types of setting accelerators such as calcium nitrous, calcium nitrate and C-S-H micro crystal dispersion on early strength enhancement of mortar with blast furnace slag cement were investigated. As a result, it was confirmed that compressive strength of mortar at early age had been enhanced by each accelerator, among them, the accelerator of C-S-H type showed the highest promoting effect. Furthermore, it was found that when the dosage is 4% or more, the initial strength designated by construction procedure can be secured and the productivity of construction work can also be improved.