Optical evaluation on the setting of cement paste

7th International Congress of Engineering Physics

物理学;工业技术

De León Martínez, H.A.^1 ; Soto Bernal, J.J.^1 ; González Mota, R.^1 ; Rosales-Candelas, I.^1

Instituto Tecnológico de Aguascalientes, Av. Adolfo López Mateos, Ote. Fracc. Bona Gens, Aguascalientes

# 1801, Mexico^1

关键词: Cement paste;    Crystallographic phasis;    Diffuse reflection;    Hydration reaction;    Hydraulic binders;    Water-to-cement ratios;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/582/1/012021/pdf
DOI  :  10.1088/1742-6596/582/1/012021

学科分类：工业工程学

来源: IOP

【 摘 要 】

In the construction area, one of the most widely used cement is the CPC 30R, it is a hydraulic binder consisting of CaO, SiO2, Al2O3and Fe2O3, when mixed with water forms cement pastes and its four crystallographic phases start to hydrate. The diffuse reflection on cement paste can give an indication of the behaviour on optical properties on the hydration of the cement and early formation products. In this study, Portland cement (CPC) pastes were prepared with 0.45 a water to cement ratio (w/c). This work is aimed to evaluate the optical properties of cement pastes on the hydration reaction during the first 24 hours by measuring the intensity of diffuse reflection changes.