Search Results - "Talero, R"

Calcined clays for low carbon cement: Rheological behaviour in fresh Portland cement pastes by Aramburo, C., Pedrajas, C., Rahhal, V., González, M., Talero, R.

“…•The effects of mineral additions, on rheological behavior of cement at early ages.•Direct, non-direct and indirect stimulations, consequence about plastic…”
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Role of the filler on Portland cement hydration at early ages by Rahhal, V., Bonavetti, V., Trusilewicz, L., Pedrajas, C., Talero, R.

“…► The effects of mineral additions, Q and C fillers, on PC hydration at early ages. ► Physical interaction: direct and non-direct stimulations of PC hydration…”
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Early hydration of portland cement with crystalline mineral additions by Rahhal, V., Talero, R.

“…This research presents the effects of finely divided crystalline mineral additions (quartz and limestone), commonly known as filler, on the early hydration of…”
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Calorimetry of Portland cement with silica fume, diatomite and quartz additions by Rahhal, V., Talero, R.

“…The present paper analyses the influence of three siliceous mineral admixtures or mineral additions, on hydration reactions of two Portland cements with very…”
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Performance of silicic pozzolans and Portland cements in their behavior in front of gypsum attack as determined by ASTM C 452-68 by R. Talero

“…For this study, ASTM C 452-68 testing was conducted for two years on 54 POZC-silica fume (SF) or diatomites (D and N) (=Z pozzolans), were tested for 2 years,…”
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Determination of characteristic rheological parameters in Portland cement pastes by Pedrajas, C., Rahhal, V., Talero, R.

“…•In rheological studies, the stimulus type may yield different shear strength values depending on the measurement scheme used.•Similar behaviour: ≈50% decline…”
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Demographic and clinical profile of idiopathic pulmonary fibrosis patients in Spain: the SEPAR National Registry by Fernández-Fabrellas, Estrella, Molina-Molina, María, Soriano, Joan B, Portal, José Antonio Rodríguez, Ancochea, Julio, Valenzuela, Claudia, Xaubet, Antoni

“…Little is known on the characteristics of patients diagnosed with idiopathic pulmonary fibrosis (IPF) in Spain. We aimed to characterize the demographic and…”
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Comparative and semi-quantitative XRD analysis of Friedel’s salt originating from pozzolan and Portland cement by Talero, R., Trusilewicz, L., Delgado, A., Pedrajas, C., Lannegrand, R., Rahhal, V., Mejía, R., Delvasto, S., Ramírez, F.A.

“…► Pozzolanic activity of pozzolans in sodium chloride solution. ► Friedel’s salt originated from two origins: Al 2 O 3 r - of pozzolans and C 3A of PC. ►…”
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Calorimetric comparison of portland cements containing silica fume and metakaolin: Is silica fume, like metakaolin, characterized by pozzolanic activity that is more specific than generic? by Talero, R., Rahhal, V.

“…This new study must be regarded to be a direct outcome of two previous studies published by these same authors, which were conducted to respond to interesting…”
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TEM and SAED Characterization of Metakaolin. Pozzolanic Activity by Trusilewicz, L., Fernández-Martínez, F., Rahhal, V., Talero, R.

“…The present study deals with a characterization of metakaolin pozzolanic activity and its chemical character exhibited in the Ordinary Portland Cement (OPC)…”
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Kinetochemical and morphological differentiation of ettringites by the Le Chatelier–Anstett test by Talero, R.

“…In this research, former XRD experiments have been verified by Le Chatelier–Ansttet (L-A) test. For this purpose, 28 cements consisting of 7 Portland cements…”
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Influence of two different fly ashes on the hydration of portland cements by RAHHAL, V, TALERO, R

“…Fly ashes from the combustion of coal thermal power stations are commonly incorporated into portland cements and/or concretes and mortars. The chemical and…”
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Calorimetry of Portland cement with metakaolins, quartz and gypsum additions by Rahhal, V., Talero, R.

“…In this work two aluminic pozzolans (metakaolins) and a non-pozzolan were added to two Portland cements with very different mineral composition, to determine…”
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Co-precipitation of ettringite of rapid and slow formation. Consequence: Expansive Synergic Effect. Its demonstration by mortars and concretes by Talero, R

“…Several prior papers have shown that enough pozzolans can bring about rapid formation ettringite (from its Al(2)O(3)). It has likewise been found that the…”
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Fast physics-chemical and calorimetric characterization of natural pozzolans and other aspects by Rahhal, V., Talero, R.

“…This research reports on the effects of including natural pozzolans in two Portland cements with different mineralogical compositions, with and without excess…”
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Kinetic and morphological differentiation of Ettringites in plain and blended Portland cements using Metakaolin and the ASTM C 452-68 test. Part I: kinetic differentiation by Talero, R

“…In this first part of the study, the results obtained in prior research with XRD and SEM, as well as the Le Chatelier-Ansttet test were confirmed with the ASTM…”
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Fast physics-chemical characterization of fly ash by Rahhal, V., Talero, R.

“…This paper analyzes the effect of fly ash chemical character on early Portland cement hydration and the possible adverse effects generated by the addition of…”
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Kinetic and morphological differentiation of ettringites in plain and blended Portland cements with metakaolin and the ASTM C 452-68 test. Part II: Morphological differentiation by SEM and XRD analysis by Talero, R

“…The same cementitious materials (OPCs, SRPCs and matekaolin, MK), the same blended cements and the same ASTM C 452-68 test than in Part I, were used. Other…”
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Calorimetry of portland cement with silica fume and gypsum additions by RAHHAL, V, CABRERA, O, TALERO, R, DELGADO, A

“…The use of active mineral additions is an important alternative in concrete design. Such use is not always appropriate, however, because the heat released…”
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Comportamiento de los cementos Pórtland con puzolanas silícicas frente al ataque del yeso, determinado mediante el Método ASTM C 452-68 by TALERO, R

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