TY - JOUR
T1 - Influence of monocylic aromatic high range water-reducer on hydration and microstructure of cement pastes
AU - Zhao, Hui
AU - Deng, Ming
AU - Wu, Xiao Ming
AU - Gao, Bo
PY - 2009/6
Y1 - 2009/6
N2 - The influences of the monocyclic aromatic high range water reducers on cement hydration were evaluated from four factors, such as hydration heat, hydration products, pore structure, microstructures of cement pastes. With measurement of hydration heat by the TAM Ai, it was found that monocyclic aromatic high range water reducer may delay early hydration and significantly decreased early hydration heat. And the monocyclic aromatic high range water reducers tended to increase porosity and pore volume of cement pastes with MRI analysis, while pore size distribution did not change remarkably. With analysis of XRD, TG-DTA and SEM, it was shown that the monocyclic aromatic high range water reducers could restrain the production of Ca(OH)2 and Hydrated Calcium Silicates in the hydration process without affecting the end products, and refine the hydration products, such as Ca(OH)2, C-S-H gel and ettringite crystals.
AB - The influences of the monocyclic aromatic high range water reducers on cement hydration were evaluated from four factors, such as hydration heat, hydration products, pore structure, microstructures of cement pastes. With measurement of hydration heat by the TAM Ai, it was found that monocyclic aromatic high range water reducer may delay early hydration and significantly decreased early hydration heat. And the monocyclic aromatic high range water reducers tended to increase porosity and pore volume of cement pastes with MRI analysis, while pore size distribution did not change remarkably. With analysis of XRD, TG-DTA and SEM, it was shown that the monocyclic aromatic high range water reducers could restrain the production of Ca(OH)2 and Hydrated Calcium Silicates in the hydration process without affecting the end products, and refine the hydration products, such as Ca(OH)2, C-S-H gel and ettringite crystals.
KW - High range water reducer
KW - Hydration
KW - Microstructure
KW - Single-ring aromatic
UR - http://www.scopus.com/inward/record.url?scp=70350433699&partnerID=8YFLogxK
M3 - 文章
AN - SCOPUS:70350433699
SN - 1674-4764
VL - 31
SP - 130-135+141
JO - Tumu Jianzhu yu Huanjing Gongcheng/Journal of Civil, Architectural and Environmental Engineering
JF - Tumu Jianzhu yu Huanjing Gongcheng/Journal of Civil, Architectural and Environmental Engineering
IS - 3
ER -