Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Predicting Ca(OH)2 content and chemical shrinkage of hydrating cement pastes using analytical approach
A semiempirical model is proposed to predict the evolution of chemical shrinkage and Ca(OH)2 content of cement paste at early age of hydration. The model is based on chemical equations and cement compound hydration rates. Chemical shrinkage and Ca(OH)2 amount are computed using the stoichiometric results of the hydration reactions considered in the model and the density of hydration products and reactants. The model validation is conducted by comparison between computed and experimental results achieved on ordinary cement pastes with different water-to-cement (w/c) ratios (0.25, 0.30, 0.35 and 0.40) cured at 10, 20, 30, 40 and 50 degree C, respectively. Hydration degree and Ca(OH)2 content are determined using the thermogravimetric analysis (TGA) and chemical shrinkage evolution using a gravimetric method. The comparison reveals a good consistency between modelled and experimental data at early age of hydration.
Predicting Ca(OH)2 content and chemical shrinkage of hydrating cement pastes using analytical approach
A semiempirical model is proposed to predict the evolution of chemical shrinkage and Ca(OH)2 content of cement paste at early age of hydration. The model is based on chemical equations and cement compound hydration rates. Chemical shrinkage and Ca(OH)2 amount are computed using the stoichiometric results of the hydration reactions considered in the model and the density of hydration products and reactants. The model validation is conducted by comparison between computed and experimental results achieved on ordinary cement pastes with different water-to-cement (w/c) ratios (0.25, 0.30, 0.35 and 0.40) cured at 10, 20, 30, 40 and 50 degree C, respectively. Hydration degree and Ca(OH)2 content are determined using the thermogravimetric analysis (TGA) and chemical shrinkage evolution using a gravimetric method. The comparison reveals a good consistency between modelled and experimental data at early age of hydration.
Predicting Ca(OH)2 content and chemical shrinkage of hydrating cement pastes using analytical approach
Mounanga, Pierre (Autor:in) / Khelidj, Abdelhafid (Autor:in) / Loukili, Ahmed (Autor:in) / Baroghel-Bouny, Veronique (Autor:in)
Cement and Concrete Research ; 34 ; 255-265
2004
11 Seiten, 39 Quellen
Aufsatz (Zeitschrift)
Englisch
| British Library Online Contents | 2004
Experimental assessment of chemical shrinkage of hydrating cement pastes
| British Library Conference Proceedings | 1999
| British Library Online Contents | 2005