Zobrazeno 1 - 10
of 17
pro vyhledávání: '"J. F. Velázquez-Navarro"'
Publikováno v:
Advances in Cement Research. 32:20-29
The effect of various plasticisers (lignosulfonates and copolymers) on volcanic cement was assessed in this study. The volcanic cement was designed by substituting Portland cement with a natural volcanic pozzolan resulting from Andean volcanic activi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ba8d27db73115c7c01598b55c7f1565
https://doi.org/10.1680/jadcr.18.00058
https://doi.org/10.1680/jadcr.18.00058
Publikováno v:
Construction and Building Materials. 194:360-371
Portland cement without any class of admixtures and additives was substituted with a mixture of volcanic ash ( V A ) and pumice powder ( P P ) to obtain volcanic Portland cement ( V P C ) with four different compositions. Three water/binder ratios we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d8a2df036bb27ef08b1990a248358b5
https://doi.org/10.1016/j.conbuildmat.2018.11.009
https://doi.org/10.1016/j.conbuildmat.2018.11.009
Publikováno v:
Rheologica Acta. 57:389-396
We show that a pronounced variation of the apparent viscosity with shear joined to the control shear mode of a rheometer can justify why monotonous and non-monotonous steady-flow curves can be obtained testing the same non-Newtonian fluid.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::212b878f7ad00ef4d9fcf6663e9b5844
https://doi.org/10.1007/s00397-018-1084-x
https://doi.org/10.1007/s00397-018-1084-x
Publikováno v:
Advances in Cement Research. 29:438-449
Three commercial Ecuadorian cements, obtained from crushing a mix of clinker and a mixture of pumice powder and volcanic ash, were selected to perform studies on steady viscous flow behaviour. Steady flow curves were obtained during the dormant perio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1c4defd534d1f3611fe9640ff025de9
https://doi.org/10.1680/jadcr.16.00188
https://doi.org/10.1680/jadcr.16.00188
Publikováno v:
Soft Materials. 15:55-63
Fumed silica with n-hexadecane molecules anchored onto its surface (Aerosil®R816) was dispersed in polypropylene glycol of low molecular weight (PPG400). This system showed a complex steady shear behavior: shear-thickening between two shear-thinning
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3bf14abdd98ab7d8b74f0b83b5eb36db
https://doi.org/10.1080/1539445x.2016.1242501
https://doi.org/10.1080/1539445x.2016.1242501
Publikováno v:
Soft Materials. 13:127-137
The solid-liquid interface of anatase-water nanofluids has been characterized. Combined data of electrophoretic mobility and conductivity of the colloidal suspensions have been used to evaluate zeta-potentials. Plots of the suspension conductivity as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77f55274983a291ca613a907263bdba7
https://doi.org/10.1080/1539445x.2015.1017769
https://doi.org/10.1080/1539445x.2015.1017769
Publikováno v:
Ceramics International. 41:5331-5340
It is widely demonstrated that the distinct electrokinetic techniques lead to different values of ζ-potential despite what should be expected from the classical theory. Electrophoresis and conductivity measurements were used to estimate the ζ-poten
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a02434628eb1896ae4f2e5c87974c96d
https://doi.org/10.1016/j.ceramint.2014.12.088
https://doi.org/10.1016/j.ceramint.2014.12.088
Autor:
J. F. Velázquez-Navarro, J. Aguiar, A.I. Gómez-Merino, C. Jiménez-Agredano, Francisco Jose Rubio-Hernandez
Publikováno v:
Ceramics International. 40:14045-14050
The aggregation state of anatase water nanofluids was evaluated. Size, shape and size distribution were determined by dynamic light scattering (DLS), transmission electron microscopy (TEM) and rheological measurements. The maximum packing fraction an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86a4f1c9f4d61600c26a23cd4a49e888
https://doi.org/10.1016/j.ceramint.2014.05.132
https://doi.org/10.1016/j.ceramint.2014.05.132
Publikováno v:
Materials and Structures. 46:587-605
A deeper and wider knowledge of the rheology of concrete could be obtained if a variety of absolute rheological parameters were measured. Although a valuable rheological classification can be induced from concrete rheometers, they do not give the sam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd31f36d0c523b64274c36dc7f3cc7a0
https://doi.org/10.1617/s11527-012-9915-1
https://doi.org/10.1617/s11527-012-9915-1
Publikováno v:
Advances in Cement Research. 23:255-263
The effects of the concentration of two different additives, lignosulfonate and polycarboxilate, in the rheological parameters of fresh cement pastes were investigated. The geometry of concentric cylinders with a narrow gap was used together with a v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6b9c4fd0849069c2597ece72dc792d2
https://doi.org/10.1680/adcr.2011.23.5.255
https://doi.org/10.1680/adcr.2011.23.5.255