A «carbon footprint» of low water demand cements and cement-based concrete

Khozin, V. G.; Khokhryakov, O. V.; Nizamov, Rashit

doi:10.1088/1757-899x/890/1/012105

Cited by 21 publications

(6 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The demand for a substitute for cement is increasing due to the environmental pollution associated with its production. Cement production is responsible for 5-9% of global CO 2 emissions [1][2][3][4][5]. Cement production requires raw materials, such as limestone, which is a non-renewable resource.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ground Granulated Blast Slag and Temperature Curing on the Strength of Fly Ash-based Geopolymer Concrete

Kumar,

Rajkishor,

Kumar

et al. 2024

Eng. Technol. Appl. Sci. Res.

View full text Add to dashboard Cite

Concrete is used most extensively after water to meet construction requirements. Since the population is increasing day by day, the demand for concrete will always increase, hence, the demand for cement will also increase. The production of cement requires a lot of energy and emits greenhouse gases into the environment. Therefore, an alternative material for cement concrete is required. Geopolymer concrete (GPC) is an alternative to cement made of aluminosilicate materials such as fly ash, Ground Granulated Blast Slag (GGBS), silica fume, metakaolin, etc. If these materials are activated with an alkaline activator, then a bond that is responsible for the strength develops. GPC made with fly ash needs temperature curing to develop its strength, which limits its use on a large scale. In this study, a mix ratio of GPC equivalent to conventional M20 concrete was obtained at ambient curing conditions. The effect of temperature curing was also studied. GPC was prepared in three different mixes. In each mix, the binder content was changed by varying the fly ash and GGBS content. Two sets of cube, beam, and cylindrical samples were prepared from each mixture. One set was cured at ambient temperatures and the other at increased temperatures. The temperature-cured specimens provided higher strength than the ambient-cured. If a strength equivalent to conventional M20 concrete is required for ambient curing, then the mix should be 70% fly ash and 30% GGBS, and the ratio of binder, fine aggregate, and coarse aggregate should be 1:1.5:3.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Ground Granulated Blast Slag and Temperature Curing on the Strength of Fly Ash-based Geopolymer Concrete

Kumar,

Rajkishor,

Kumar

et al. 2024

Eng. Technol. Appl. Sci. Res.

View full text Add to dashboard Cite

show abstract

“…Cement production is a three-stage process involving raw material preparation, clinker production, which consumes a lot of energy; it represents for 12-15 percent of overall energy use globally [8] . The carbon footprint of concrete and cement manufacturing has attracted much attention recently [9,10]. The production of Cement is accounting for 5-8% of worldwide CO2 emissions [11,12].…”

Section: Introductionmentioning

confidence: 99%

Concrete Industry, Environment Issue, and Green Concrete: A Review

Tanash

Muthusamy

2022

construction

View full text Add to dashboard Cite

Concrete is the second most utilized substance around the world behind the water. The aim of this paper is to review the environmental effect of concrete industry. It has been found that the environmental impact of concrete industry is severe in various environmental categories as global warming, depletion of ozone layer, and acidification of soil and water bodies. Moreover, concrete industry affects ecosystems and alters hydrogeological and hydrological systems. Green concrete has become increasingly popular among researchers and academics in recent years, although it is still in its infancy. This article examines the environmental impact of waste materials such as fly ash, silica fume, and slag as partial or complete replacements for cement, and of waste and recycled material as aggregates. It shows that the negative environmental effect of the concrete industry can be minimized by using these waste materials in the concrete production.

show abstract

“…The civil construction sector is one of the main pillars of the economy, generating solid waste and consuming natural resources [5]. The concrete industry uses more than 4.2 billion tons of cement per year (in 2016, its worldwide consumption is 4.13 billion tons [6]). Concrete is one of the most used construction materials, with a consumption annual total of approximately 25 billion tons, which equates to more than 3.8 tons per person per year [7].…”

Section: Introductionmentioning

confidence: 99%

Physical and Mechanical Properties of Concrete Made with Glass Sand

Figueiredo

Reis

Maia

2022

Lecture Notes in Civil Engineering

View full text Add to dashboard Cite

It is important promoting less generation of urban waste not only for the economy of raw materials, but also for the lesser deposition of waste in landfills. Glass is among the most frequently used materials in packaging and is the easiest to be recycled. Being aware that the construction industry is one of the largest consumers of natural resources in the world, the present study deals with the possibility of replacing part of the fine aggregate of concrete by glass sand. Concrete was produced with the conventional aggregates and then the fine aggregate was partially replaced by glass sand for the percentages of 10, 15 and 20%. The experimental study sought to evaluate the physical and mechanical properties. The slump, compressive strength, tensile strength and water absorption by capillarity and void index testing were measured. Results showed that when replacing the fine aggregate by 10, 15 and 20% of glass sand the results are satisfactory, especially for the substitution of 20% of glass sand which presented an increase of 18% in the compressive strength.

show abstract

A «carbon footprint» of low water demand cements and cement-based concrete

Cited by 21 publications

References 7 publications

Effect of Ground Granulated Blast Slag and Temperature Curing on the Strength of Fly Ash-based Geopolymer Concrete

Effect of Ground Granulated Blast Slag and Temperature Curing on the Strength of Fly Ash-based Geopolymer Concrete

Concrete Industry, Environment Issue, and Green Concrete: A Review

Physical and Mechanical Properties of Concrete Made with Glass Sand

Contact Info

Product

Resources

About