Search Results - "Rahhal, V"

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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Very early age detection of ettringite from pozzolan origin by Rahhal, V, Talerob, R

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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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Studies on the carboaluminate formation in limestone filler-blended cements by Bonavetti, V.L, Rahhal, V.F, Irassar, E.F

“…Carboaluminates are hydration products of limestone-blended cements and they compete with monosulfoaluminate stability and ettringite transformation. In this…”
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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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Self-activation of slag-cements with glass waste powder by Trezza, M. A., Rahhal, V. F.

“…The aim of this study is to evaluate the behavior of glass powder waste as alkaline activator of slag when both are used in blended cement. The slag blended…”
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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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Pozzolanic activity of argentine vitreous breccia containing mordenite by Bonavetti, V. L., Rahhal, V. F., Locati, F., Irassar, E. F., Marfil, S., Maiza, P.

“…A vitreous breccia with variable amount of mordenite was studied for its use as pozzolan. The raw material was characterized by optical and scanning electron…”
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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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Influence of initial curing on the properties of concrete containing limestone blended cement by Bonavetti, V., Donza, H., Rahhal, V., Irassar, E.

“…This paper describes the effect of duration of initial curing on the mechanical properties (compressive strength, tensile strength, and modulus of elasticity)…”
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Influence of limestone content, gypsum content and fineness on early age properties of Portland limestone cement produced by inter-grinding by Irassar, E.F., Violini, D., Rahhal, V.F., Milanesi, C., Trezza, M.A., Bonavetti, V.L.

“…This paper examines the behavior of Portland limestone cements (PLCs) made by inter-grinding clinker, gypsum and limestone in a full size-cement plant, while…”
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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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Portland blended cements: demolition ceramic waste management by Trezza, M. A., Zito, S., Tironi, A., Irassar, E. F., Rahhal, V. F.

“…Demolition ceramic wastes (DCWs) were investigated in order to determine their potential use as supplementary cementitious materials in Portland Blended…”
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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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Cement with silica fume and granulated blast-furnace slag: strength behavior and hydration by Bonavetti, V. L., Castellano, C., Donza, H., Rahhal, V. F., Irassar, E. F.

“…This paper analyses the influence of portland cement replacement by silica fume (up to 10%) and/or granulated blast furnace slag (up to 70%) on the hydration…”
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