Velazquez, S.

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Monomer chain cross‐transfer constants and cross termination factor evaluations on styrene‐acrylonitrile copolymerization
(Wiley, 1995)
E. Mendizabal
;
;
V. Gonzalez
;
C. F. Jasso
Using low conversion bulk copolymerization experimental data and the apparent rate constant model, the monomer chain cross‐transfer rate constants and the cross‐termination coefficient were evaluated. It was found that the dependence of the cross‐termination coefficient on composition is a function of initiator efficiency and that monomer chain cross‐transfer rate constant are relevant for the theoretical estimation of the molecular weights and molecular weight distributions.
Scopus© Citations 4 37
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A thermogravimetric study of the pozzolanic reactions in mixtures containing fluidized catalytic cracking catalyst, fly ash, cement and water
(CANMET / ACI, 2004)
13
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Chemical activation of pozzolanic reaction of fluid catalytic cracking catalyst residue (FC3R) in lime pastes: thermal analysis
(2004)
J. Paya
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J. Monzo
;
M. V. Borrachero
;
Scopus© Citations 21 7
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The chemical activation of pozzolanic reaction of fluid catalytic cracking catalyst residue (FC3R) in lime pastes
(2007)
Payá, Jordi
;
Monzó, José M.
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Borrachero, María V.
;
Previous work has shown the effectiveness of certain chemical activators, especially sodium sulphate, in improving the pozzolanic activity of fluid catalytic cracking catalyst residue (FC3R)/lime pastes, monitored by means of calcium hydroxide (CH) consumption. The influence of several chemical activators on the development of mechanical strength is described, namely sodium sulphate, calcium chloride, sodium hydroxide and NaOH– gypsum mixture. Since the study was performed in pastes, prismatic test specimens of 1 cm × 1 cm × 6 cm were used, which were proposed by Köch–Steinegger for durability studies of cement pastes. In order to evaluate the results, these were compared with the mechanical strength of mortars, and excellent correlations were obtained. The sodium sulphate activator gave very high compressive strengths, especially at early curing ages, although at longer curing ages, the paste without activator yielded satisfactory strength.
Scopus© Citations 10 11 1
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Advantages in the use of fly ashes in cements containing pozzolanic combustion residues: silica fume, sewage sludge ash, spent fluidized bed catalyst and rice husk ash
(2002)
J Payá
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J Monzó
;
M V Borrachero
;
F Amahjour
;
I Girbés
The enhancement in the workability of Portland cement concrete when coal fly ashes are added to the mix is well‐known. This behaviour has been attributed to the spherical shape and the smooth surface of the fly ash particles. On the other hand, when other combustion residues with pozzolanic properties are added to concrete mix formulations, a loss in workability is observed, and an increase in water content may be necessary for obtaining a satisfactory plastic consistency of the concrete, or alternatively chemical additives may be used (plasticizers and superplasticizers). The effect of the combination of fly ash with other mineral admixtures in respect of the effect on the workability of mortars has been studied. The pozzolanic combustion residues examined were: silica fume, sewage sludge ash, spent fluid catalytic cracking catalyst and rice husk ash. Additionally, and due to the pozzolanic properties of coal fly ash and these residues, the strength developments of Portland cement mortars containing fly ash and the selected admixtures have also been measured
Scopus© Citations 64 30
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Assessment of the Pozzolanic Activity of a Spent Catalyst by Conductivity Measurement of Aqueous Suspensions with Calcium Hydroxide
(2014)
;
José Monzó
;
María Borrachero
;
Jordi Payá
Scopus© Citations 14 8 1
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Cement equivalence factor evaluations for fluid catalytic cracking catalyst residue
(2013)
J. Payá
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J. Monzó
;
M.V. Borrachero
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Scopus© Citations 31 9 1
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Spent fluid catalytic cracking catalyst for improving early strength of portland cement
(2014-01-01)
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Borrachero, María V.
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Monzó, José M.
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Payá, Jordi
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Vunda, Christian
32
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Evaluation of the pozzolanic activity of spent FCC catalyst/fly ash mixtures in Portland cement pastes
(2016)
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J. Monzó
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M.V. Borrachero
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L. Soriano
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J. Payá
Scopus© Citations 51 28 1
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Housing and quality of life. Measuring the social habitat in western Mexico
(2014-01-01)
Hernández, Gustavo
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22 1

Velazquez, S.

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