Results 31 to 40 of about 3,765 (253)

Feasibility of sludge generated in water-based paint industries as cement replacement material

open access: yesCase Studies in Construction Materials, 2022
An estimated 2100 tonnes of solid sludge is generated per annum from the water-based paint industries of Bangladesh. This paint sludge (PS) is usually incinerated, consuming energy and generating greenhouse gases and other pollutants.
Syed Ishtiaq Ahmad   +2 more
doaj   +1 more source

Pozolanicidade do resíduo cerâmico

open access: yesRevista Principia, 2020
The construction industry is still responsible for generating a significant volume of waste from mortars, concrete and ceramic materials. We underline in this scenario the residue of ceramic bricks that can be used in the production of new materials ...
Janaína Anne Mota Melo   +5 more
doaj   +1 more source

Sustainable infrastructure development through use of calcined excavated waste clay as a supplementary cementitious material [PDF]

open access: yes, 2017
Major infrastructure development projects in London produce large quantities of London clay and use significant volumes of concrete. Portland cement (CEM I) in concrete is normally partially replaced by supplementary cementitious materials such as ground
Cheeseman, Christopher   +4 more
core   +1 more source

Analysis of pozzolanicity of the rind cashew nut ashes by X-ray diffraction [PDF]

open access: yes, 2009
Atualmente, o aproveitamento de resíduos na construção civil tem sido estimulado, uma vez que esse setor apresenta-se como um dos maiores consumidores de materiais naturais em seus processos e produtos.
LIMA, S.A., ROSSIGNOLO, J.A.
core   +1 more source

A new approach to measuring pozzolanicity of Supplementary Cementitious Materials using existing ASTM standards [PDF]

open access: yes, 2021
Supplementary cementitious materials (SCMs) improve the long-term strength and durability of concrete systems through the pozzolanic and/or hydraulic reactions that form additional calcium silicate hydrate (C-S-H) phases.
Jang, Jae Kyeong
core   +1 more source

Evaluation of Fly Ash Reactivity Potential Using a Lime Consumption Test [PDF]

open access: yes, 2017
The reactivity of fly ash (FA), for use in concrete, is normally evaluated in the UK/EU by means of the activity index test (on mortars at 28 and 90 d (BS EN 450-1)). This paper reports on the application of a lime consumption test, based on BS EN 196-5
Csetenyi, Laszlo   +3 more
core   +2 more sources

Evaluation of Rice Straw Ash as a Pozzolanic Addition in Cementitious Mixtures

open access: yesApplied Sciences, 2021
Rice husk ash is one of the most widely studied biomass ashes used in pozzolanic addition. Given its lower silica content, rice straw ash (RSA) has been explored less often, despite the fact that, according to the United Nations Food and Agriculture ...
Samantha Hidalgo   +5 more
doaj   +1 more source

Assessment of phase formation in lime-based mortars with added metakaolin, Portland cement and sepiolite, for grouting of historic masonry [PDF]

open access: yes, 2010
Lime-based mortars containing pozzolanic additions of metakaolin, sepiolite and white Portland cement are studied in order to determine their performance as historic masonry conservation mortars.
Hernández Olivares, Francisco   +1 more
core   +2 more sources

Study of the Influence of Chemical Composition on the Pozzolanicity of Soda-lime Glass Microparticles [PDF]

open access: yesMaterials Research, 2015
The use of residues, in partial or total substitution of aggregates or binders in concrete, presents interesting possibilities for obtaining eco-efficient concretes. Research has investigated the use of glass residue in Portland cement composite, whether
Rosemary Bom Conselho Sales   +5 more
doaj   +1 more source

Heats of hydration and pozzolan content of portland-pozzolan cements

open access: yesJournal of Research of the National Bureau of Standards, 1952
Methods are described for the measurement of the approximate heat of solution in acid of portland-cement^-pozzolan mixtures. Examples are given of the estimation of the heat of hydration of portland-pozz olan cements. Determinations of the amount of material undissolved in the calorimeter, as well as the heats of solution, were applied to the problem ...
E.S. Newman, L.S. Wells
openaire   +2 more sources

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