Methods for Evaluating Pozzolanic Reactivity in Calcined Clays: A Review. [PDF]
Materials (Basel), 2023 The search for alternative materials to replace ordinary Portland cement has been the object of work that enhances the investigation of the use of pozzolanic materials and the reduction of the carbon footprint with supplementary cementitious materials. However, not all materials are available to meet the large-scale demand for cement replacement.
Pinheiro VD +5 more
europepmc +3 more sources
Pozzolanic Reactivity and Hydration Products of Hedenbergite
Chemical Engineering Transactions, 2017 With hedenbergite, desulfurized gypsum and calcium hydroxide as the materials, this paper studies the pozzolanic reactivity of finely ground hedenbergite and performs XRD, IR, NMR and SEM analysis on the hydration products of the neat paste specimens ...
Biyao Geng +7 more
doaj +2 more sources
Significance of fineness of pozzolans in determining pozzolanic reactivity
CementThis paper presents the quantification of the pozzolanic reactivity of pozzolans examined in terms of compressive strength, bound water and electrical resistivity.
Mahipal Kasaniya +3 more
doaj +2 more sources
Characterization and Reactivity of Natural Pozzolans from Guatemala
Applied Sciences, 2022 The possibility of using pozzolanic materials as a partial substitute for Portland cement (PC) to develop mortars and concretes promotes environmental and economic benefits.
Oscar M. Sierra +5 more
doaj +3 more sources
Classification and Milling Increase Fly Ash Pozzolanic Reactivity [PDF]
Frontiers in Built Environment, 2021 Upcycling and reclaiming of low quality or stored coal combustion fly ashes could enable to tap into a voluminous resource of supplementary cementitious materials (SCMs) for low-carbon blended cements.
Ruben Snellings +3 more
doaj +2 more sources
Monitoring the reactivity of pozzolans by thermogravimetric method
Acta Polytechnica CTU ProceedingsThis work focuses on comparing the effect of ten different types of pozzolans on the strength of lime pastes in relation to their pozzolanic activities as determined by the Chapelle test and monitoring the reactivity of these pozzolans using the ...
Martin Vyšvařil
doaj +2 more sources
The Influence of Production Parameters on Pozzolanic Reactivity of Calcined Clays
Nordic Concrete Research, 2018 Calcined clays are gaining increasing interest as future supplementary cementitious materials for the production of blended cements. Besides the mineralogy, the right production conditions can affect the pozzolanic activity of calcined clays.
Danner Tobias, Justnes Harald
doaj +3 more sources
Effect of Fineness of Basaltic Volcanic Ash on Pozzolanic Reactivity, ASR Expansion and Drying Shrinkage of Blended Cement Mortars [PDF]
Materials, 2019 Kaffayatullah Khan +2 more
exaly +2 more sources
Comprehensive Review of Direct and Indirect Pozzolanic Reactivity Testing Methods
Buildings, 2023 The production of portland cement is among the major contributors to greenhouse gas emissions that adversely affect the environment. Identifying sustainable materials to partially replace portland cement in concrete, such as pozzolanic materials, is ...
Farzaneh Elyasigorji +6 more
doaj +1 more source
Evaluation of Pozzolanic Reactivity of Artificial Pozzolans [PDF]
Materials Science Forum, 2012 Pozzolanicity is a very interesting issue regarding building materials, as a way to enhance mortars and concrete durability. This property results from the reaction between calcium hydroxide and silica and alumina based materials. Different types of natural and artificial pozzolans show pozzolanic activities that differ depending on the materials ...
Pontes, J. +2 more
openaire +3 more sources