Cement and concrete research, Vol. 39 N° 3. Cement and concrete research - Mars 2009
| Titre : | Cement and concrete research, Vol. 39 N° 3. Cement and concrete research - Mars 2009 |
| Type de document : | Bulletin |
| Paru le : | 15/11/2009 |
Dépouillements
Article : texte imprimé
José Mora-Ruacho, Auteur ;
Gettu, Ravindra, Auteur ;
Antonio Aguado, Auteur
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Fresh concrete exposed to high evaporation rates is prone to plastic shrinkage cracking, especially in structures with large surface area/volume ratios. The present work shows that the reduction of the surface tension of the mixing water is an e[...]
Article : texte imprimé
I. García Lodeiro, Auteur ;
D.E. Macphee, Auteur ;
A. Palomo, Auteur
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The present study addresses the effect of different concentrations of Na2O on the structure of a composition of fresh C–S–H gels. The gels were synthesized from laboratory reagents, using calcium nitrate as the source of calcium and a sodium sil[...]
Article : texte imprimé
Muhammad Nasir Amin, Auteur ;
Jeong-Jae Kim, Auteur
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An experimental study is conducted to simulate the thermal stresses generated in mass concrete. Accurate prediction of the thermal stresses by analysis is quite difficult particularly at early ages, due to uncertain age-dependent properties of c[...]
Article : texte imprimé
Jean-Yves Petit, Auteur ;
Kamal H. Khayat, Auteur ;
Eric Wirquin, Auteur
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Self-consolidating concrete (SCC) is being increasingly used as construction material for its workability. However, the rheological properties of such concrete, which is made with significant concentration of high-range water-reducing admixture [...]
Article : texte imprimé
G. Heirman, Auteur ;
R. Hendrickx, Auteur ;
L. Vandewalle, Auteur
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The influence of mineral additions and chemical admixtures on the shear thickening flow behaviour of powder type self-compacting concrete (SCC) is studied by means of a wide-gap concentric cylinder rheometer. The Couette inverse problem is treat[...]
Article : texte imprimé
B. Cazacliu, Auteur ;
N. Roquet, Auteur
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This paper introduces a new model for concrete mixing kinetics. The model defines five successive stages through which the mixture characteristics change. It is also shown that the time-variation of the mixer power consumption is a relevant tool[...]
Article : texte imprimé
Xiao-Ting Chen, Auteur ;
C.A. Davya, Auteur ;
F. Skoczylas, Auteur
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This contribution aims at identifying experimentally the poro-elastic properties of a cement-based material under different levels of confining pressure, and after a heat-treatment up to 400 °C. The model material used is a normalized mortar, wi[...]
Article : texte imprimé
M. T. Bassuoni, Auteur ;
M.L. Nehdi, Auteur
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Classical sulfate immersion tests for concrete have often given different behaviour from that observed in real field exposure. Such tests do not consider other parameters existing in service that can affect the mechanisms and kinetics of sulfate[...]
Article : texte imprimé
N. Roussel, Auteur ;
T.L.H. Nguyen, Auteur ;
O. Yazoghli, Auteur
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In the present paper, it is first reminded that the probability of granular blocking of a suspension crossing a flow contraction increases with the number of particles crossing the obstacles, their volume fraction and the ratio between the diame[...]
Article : texte imprimé
G. Mertens, Auteur ;
R. Snellings, Auteur ;
K. Van Balen, Auteur
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The pozzolanic reaction between portlandite and different types of nearly pure natural zeolites was studied. Analcime, phillipsite, chabazite, erionite, mordenite and clinoptilolite-rich tuffs were mixed with portlandite and water (1:1:2 by weig[...]
Article : texte imprimé
This review summarizes the results of sulfate performance in laboratory and field tests where limestone is used as a constituent of cement (PLC) or as a sand replacement where it is particularly beneficial to the properties of self compacting co[...]
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