000004663 001__ 4663
000004663 005__ 20141119144542.0
000004663 04107 $$aeng
000004663 046__ $$k2002-06-02
000004663 100__ $$aAmziane, Sofiane
000004663 24500 $$aAN EXPERIMENTAL STUDY ON THE PRESSURE OF CEMENT BASED MATERIALS AGAINST FORMWORK

000004663 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004663 260__ $$bColumbia University in the City of New York
000004663 506__ $$arestricted
000004663 520__ $$2eng$$aAn experimental study on the pressure of cement based materials against formwork is reported. The object of the investigation was to experimentally determine the evolution of pore water and lateral pressures of cement paste until the form is removed. An original experimental device equipped with two special transducers was designed. These transducers make it possible to measure the pressure due to 1 meter and 0.05 meter depth of cement paste. Tests are carried out with four types of cement pastes, the water/cement (W/C) mass ratio ranging between 0.30 and 0.45. The results show that the kinetics of the pore water pressure and of lateral pressure are strongly affected by the W/C ratio and the level of stress to which the cement based materials is subjected. In all cases, initially we obtain levels of total and interstitial pressures equal to a theoretical hydrostatic pressure exerted by homogeneous fluid having the density of the mixture. Then, they decrease in a perfectly identical way toward zero. We record then interstitial depressions whose maximum value can reach tens of kPa.

000004663 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004663 653__ $$aCement paste, formwork, pore water pressure, lateral pressure, pressure transducer

000004663 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004663 720__ $$aAmziane, Sofiane$$iAndriamanantsilavo, Ny Riana$$iBaudeau, Philippe$$i.
000004663 8560_ $$ffischerc@itam.cas.cz
000004663 8564_ $$s768863$$uhttp://invenio.itam.cas.cz/record/4663/files/130.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004663 962__ $$r4594
000004663 980__ $$aPAPER