Results 31 to 40 of about 375,303 (201)

Replacement of pozzolanic blended cement by supplementary cementitious materials: Mechanical and environmental approach

open access: yes, 2023
Pozzolanic blended cements, used in several markets, can be mixed with supplementary cementitious materials (SCMs) to improve environmental performance keeping a similar compressive strength.
Lopez, Mauricio   +7 more
core   +1 more source

Evaluation of Pozzolanic activity and lime reactivity of fly ash, GGBS, mica powder and pumice as binders [PDF]

open access: yesE3S Web of Conferences
This article presents the effect of the pozzolanic activity and lime reactivity of various siliceous materials, like fly ash, GGBS (Ground granulated blast furnace slag), mica and pumice powders.
Ramanujam I.V. Ranga   +2 more
doaj   +1 more source

Pozzolanic reactivity of kaolin clays, a review

open access: yesRevista Ingeniería de Construcción, 2017
Pozzolans have demonstrated to be highly efficient mineral additions in the concrete industry, because they reduce the environmental impact generated by the cement manufacture, improve the physical, chemical and mechanical properties of blends, and ...
H. Yanguatin, J. Tobón, J. Ramírez
doaj   +1 more source

Enhancement of Pozzolanic Activity of Calcined Clays by Limestone Powder Addition

open access: yes, 2021
The influence of limestone powder addition on pozzolanic reactivity of calcined clays were investigated. Two clays containing kaolinite and halloysite in their compositions were obtained from different deposits in Turkey and physical, mineralogical, and ...
Argin, G., Uzal, B.
core   +1 more source

Pozzolanic Reactivity of Low Grade Kaolinitic Clays: Influence of Mineralogical Composition

open access: yes, 2015
Publisher Copyright: © RILEM 2015.The influence of chemical and mineralogical composition of five Cuban clays in the pozzolanic reactivity of its calcination products is studied in this research.
Almenares, Roger S.   +7 more
core   +1 more source

Influence of calcination temperature on the durability of metakaolin concrete and limitations of conventional testing methods

open access: yesStructural Concrete, EarlyView.
Abstract Incorporating metakaolin (MK) as a partial cement replacement offers a viable pathway to reduce carbon emissions while improving concrete performance. However, its durability behavior remains inconsistent, and the applicability of durability test methods to MK‐based concrete is not well established.
Mayen J. Geu   +3 more
wiley   +1 more source

The influence of particle size on the pozzolanic reactivity of quartz powder

open access: yesPowder Technology, 1999
Abstract Materials with cement-based matrices represent a class of materials notable for their wide and plentiful use. Up to the present, component reactivity was closely linked to the material's vitreous characteristics. The question we wanted to find an answer to was: is the pozzolanic reaction one which is specific to vitreous materials? To tackle
Benezet, Jean Charles, Benhassaine, Ali
openaire   +2 more sources

Sample Origin Effect on Chemical Reactivity of Tajogaite Volcanic Ashes for Ancient Mortar Repair

open access: yesSustainable Chemistry
Volcanic ashes (VA) ejected by the Tajogaite Volcano were studied to determine their potential as pozzolanic materials for construction applications.
Imren Basar   +5 more
doaj   +1 more source

High temperature fracture behavior and damage evolution of recycled aggregate concrete produced from metakaolin modified parent concrete

open access: yesStructural Concrete, EarlyView.
Abstract The increasing use of recycled aggregate concrete (RAC) offers significant environmental benefits by reducing construction and demolition waste; however, its fracture performance and damage evolution under elevated temperatures remain insufficiently understood, particularly when recycled aggregates are derived from metakaolin modified parent ...
Zubair Yousuf, Viktor Hlavička
wiley   +1 more source

Enhancing material properties of agro-industrial waste sugarcane bagasse ash—Way towards sustainable development

open access: yesSustainable Futures
The present study deals with a comprehensive characterization of Sugarcane bagasse ash (SCBA) and its effect on pozzolanic reactivity. Utilizing SCBA as pozzolanic material reduces the ash disposal problem and enhance the properties of cementitious ...
Yogitha Bayapureddy   +2 more
doaj   +1 more source

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