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Mostrando ítems 21-30 de 167
Uso de resíduo cerâmico em cimentos ternários tipo LC³ : estudo dos produtos da hidratação
(Universidade do Vale do Rio dos Sinos, 2019-07-23)
The partial replacement of Portland cement by supplementary cementitious materials (SCM) has been shown to be efficient to produce environmentally friendly cements. This study aims to use red ceramic waste (RCW) as calcined ...
Uso de resíduo cerâmico em cimentos ternários tipo LC³ : estudo dos produtos da hidratação
(Universidade do Vale do Rio dos Sinos, 2019-07-23)
The partial replacement of Portland cement by supplementary cementitious materials (SCM) has been shown to be efficient to produce environmentally friendly cements. This study aims to use red ceramic waste (RCW) as calcined ...
Tobacco waste ash : A promising supplementary cementitious material
(2018-05-12)
According to the European Cement Association, CEMBUREAU, in 2015, the global cement production was 4.6 billion tons. Traditional cement production emits approximately 1 ton of CO2 per ton of cement, which represents almost ...
Designing the incineration process for improving the cementitious performance of sewage sludge ash in Portland and blended cement systems
(2019)
Currently, there is little doubt that the global temperature increase is a consequence of the concentrations of manmade greenhouse gases. Sustainable alternatives such as the use of supplementary cementitious materials and ...
Ground Granulated Blast-Furnace Slag
(Springer, 2018)
Since the discovery of the latent hydraulic reactivity of ground granulated blast-furnace slag (ggbfs) by Emil Langen at the end of the 19th century, this material has been used successfully as cement and concrete addition. ...
Uso dos resíduos do processo kraft de celulose – dregs e grits – como adição mineral na produção de matrizes cimentícias.Use of pulp kraft process waste – dregs and grits – as mineral addition in the production of cementitious matrices.
(Universidade Federal de UberlândiaBrasilPrograma de Pós-graduação em Engenharia Civil, 2022)
Mineral admixture-based rheological design of concrete
(2021)
The use of supplementary cementitious materials (SCMs; e.g., slag, fly ash) to reduce the amount of ordinary Portland cement in concrete construction has increased significantly over the last 20 years. Previous research ...
Does the colour of the waste glass affect their efficiency as supplementary cementitious material?
(Taylor & Francis, 2020-11)
Glass from the solid urban waste is presented mainly in amber, green and transparent colour. Regarding their reactivity, several studies argue that there are differences among each colour when they are used as supplementary ...
Reducing setting time of blended cement paste containing high-SO3 fly ash (HSFA) using chemical/physical accelerators and by fly ash pre-washing
(2018)
Reducing the carbon footprint of the cement industry has become one of the main concerns of researchers in the field. This study explores different strategies to reduce the setting retardation effect of high-SO3 fly ash ...
Copper entrapment and immobilization during cement hydration in concrete mixtures containing copper tailings
(2021)
The use of copper tailings as supplementary cementitious material can reduce the environmental impacts ofconcrete production and the mining industry. A key concern limiting its application is the potential leaching oftoxic ...