Results 21 to 30 of about 8,920 (223)
Interaction between cements with different composition and superplasticizers
Materiales de Construccion, 2012 The slump behavior of ordinary Portland-, pozzolanic (red brick powder)-, sulfate resistant-, and limestone cement pastes caused by ≤ 1% additions of polycondensates and polycarboxylates superplasticizers are monitored for up to 90 minutes.
H. Y. Ghorab +2 more
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Compressive Strength of Volcanic Ash/Ordinary Portland Cement Laterized Concrete [PDF]
, 2010 This study investigates the effect of partial replacement of cement with volcanic ash (VA) on the compressive strength of laterized concrete. A total of 192 cubes of 150mm dimensions were cast and cured in water for 7, 14, 21, and 28 days of hydration ...
Olawuyi, B. J, Olusola, K. O
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New Deposit of Mordenite–Clinoptilolite in the Eastern Region of Cuba: Uses as Pozzolans
Molecules, 2021 This work describes the newly discovered zeolites in the eastern region of Cuba. In the researched area, there have been no previous studies of natural zeolite exploration. Therefore, the results shown here are new. The main object of this research is to
Jorge Luis Costafreda +1 more
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Potential of Orange Peel Ash as a Cement Replacement Material [PDF]
, 2019 The potential of Orange peel ash (OPA) as a cement replacement material was investigated with focus on the effect of OPA content on the physicomechnical properties such as consistency, setting times, soundness, compressive and flexural strengths of OPA ...
Abdullahi, Basiru +2 more
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Research of Frost Resistance of Tuff-Containing Portland Cement [PDF]
E3S Web of ConferencesResults of a study of frost resistance up to 150 cycles of freezing and thawing of Portland cement and pozzolanic Portland cements obtained on the basis of these Portland cement clinkers with various dosages burnt tuffite, gliège , showed that up to 30 ...
Kabulova Lola, Orazimbetova Gulistan
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Materiales de Construccion, 1987 This work confirms the certainty of the predictions of useful service given by Kaluosek and al. for the sulphate resistant portland cements (type V, USA), subject to severe selenitic attack.
Rafael Talero
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Altered Volcanic Tuffs from Los Frailes Caldera. A Study of Their Pozzolanic Properties
Molecules, 2021 This work presents the results of the study of the physical, chemical, mineralogical and pozzolanic properties of the altered volcanic tuffs (AVT) that lie in the Los Frailes caldera, south of the Iberian Peninsula, and demonstrates their qualities as ...
Jorge Luis Costafreda +3 more
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The influence of natural pozzolana mineralogical composition in the properties of blended cement
Materiales de Construccion, 2002 The pozzolana activity is the main property of the active additions but, in order to select them, we have to consider - between other factors- its mineralogical composition with a great influence, not only in the active component, but also in other ...
M. Gener Rizo, J. M. Alonso Lavernia
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Applied Sciences, 2021 Ordinary Portland cement (OPC) manufacture determines about 8% of the global anthropogenic CO2 emissions. This has led to both the cement producers and the scientific community to develop new cementitious materials with a reduced carbon footprint ...
Antonio Telesca +2 more
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Properties of plain concrete produced employing recycled aggregates and sea water [PDF]
, 2018 The final publication is available at Springer via http://dx.doi.org/10.1007/s40999-017-0229-0The generation of construction and demolition waste (C&DW) is a noteworthy environmental and economic concern.
Etxeberria Larrañaga, Miren +1 more
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