LCA of recycled and conventional concretes designed using the Equivalent Mortar Volume and classic methods

Jiménez, C.; Bizinotto, Marilda Barra; Josa, Alejandro; Valls, S.

doi:10.1016/j.conbuildmat.2015.03.051

Cited by 73 publications

(39 citation statements)

References 25 publications

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“…Concrete is one of the most widely-used construction materials nowadays due to its versatility, availability, and price [3]. The incorporation of wastes in concrete and their environmental benefits have been studied over time [2][3][4][5][6]. Concrete is composed of several constituents.…”

Section: Introductionmentioning

confidence: 99%

“…However, cement is the one that contributes the most to the environmental impacts of concrete production [3,4]. The cement content, type, or strength class directly influence the environmental impacts of concrete [2][3][4][5][6]. Jiménez et al [3] analyzed three cement types (Portland type I, Portland type II, and Portland type III) in concrete mixes.…”

Section: Introductionmentioning

confidence: 99%

“…The cement content, type, or strength class directly influence the environmental impacts of concrete [2][3][4][5][6]. Jiménez et al [3] analyzed three cement types (Portland type I, Portland type II, and Portland type III) in concrete mixes. Cement Portland type I presented 17% higher CO 2 emissions than Portland type II and 27% higher than Portland type III [3].…”

Section: Introductionmentioning

confidence: 99%

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Life Cycle Assessment of Mortars with Incorporation of Industrial Wastes

Farinha

Silvestre

Brito

et al. 2019

Fibers

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The production of waste is increasing yearly and, without a viable recycle or reutilization solution, waste is sent to landfills, where it can take thousand to years to degrade. Simultaneously, for the production of new materials, some industries continue to ignore the potential of wastes and keep on using natural resources for production. The incorporation of waste materials in mortars is a possible solution to avoid landfilling, through their recycling or reutilization. However, no evaluation of their “sustainability” in terms of environmental performance is available in the literature. In this sense, in this research a life cycle assessment was performed on mortars, namely renders, with incorporation of industrials wastes replacing sand and/or cement. For that purpose, eight environmental impact categories (abiotic depletion potential, global warming potential, ozone depletion potential, photochemical ozone creation potential, acidification potential, eutrophication potential, use of non-renewable primary energy resources, and use of renewable primary energy resources) within a “cradle to gate” boundary were analyzed for 19 mortars with incorporation of several industrial wastes: sanitary ware, glass fiber reinforced polymer, forest biomass ashes, and textile fibers. Sixteen out of the 19 mortars under analysis presented, in all environmental impact categories, an equal or better environment performance than a common mortar (used as a reference). The benefits in some environmental impacts were over 20%.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Life Cycle Assessment of Mortars with Incorporation of Industrial Wastes

Farinha

Silvestre

Brito

et al. 2019

Fibers

View full text Add to dashboard Cite

show abstract

“…As mentioned earlier, when two or more product systems are compared by using LCA, functional unit plays a key role in the LCA results (Jiménez et al 2015). Dale and Kim (2014) reported that selecting different FUs may result in different outputs and conclusions for the same study.…”

Section: Functional Unitmentioning

confidence: 98%

“…When two or more product systems are compared, FU and system boundary definition play a key role in the LCA results (Jiménez et al 2015). Table 1 shows the G&S definitions elements presented in the reviewed papers.…”

Section: Goal and Scope Definitionmentioning

confidence: 99%

Life cycle assessment of pavements: reviewing research challenges and opportunities

AzariJafari

Yahia

Amor

2016

Journal of Cleaner Production

152

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Shear transfer behavior between substrate recycled aggregate concrete and new natural aggregate concrete

Liu

Zou

Yan

2020

Structural Concrete

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This paper investigated the shear transfer behavior between substrate recycled aggregate concrete and new natural aggregate concrete. A total of 72 push-off tests with substrate-to-new concrete specimens were performed considering the effects of concrete strength grade, replacement ratios of recycled coarse aggregate, and lateral constraints ratios. Existing design codes and empirical models for calculating shear strength were reviewed and verified. Results show that concrete cracks occurred and developed along the shear transfer plane. Increasing the concrete grade and lateral constraints can both improve the crack stress and shear strength, while the incorporation of recycled coarse aggregate has a slight adverse effect on them. The model in fib Model Code 2010 based on shear-friction theory gave the most accurate but still conservative values compared with experimental results and can be used to predict the shear transfer behavior between substrate recycled aggregate concrete and new natural aggregate concrete.

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LCA of recycled and conventional concretes designed using the Equivalent Mortar Volume and classic methods

Cited by 73 publications

References 25 publications

Life Cycle Assessment of Mortars with Incorporation of Industrial Wastes

Life Cycle Assessment of Mortars with Incorporation of Industrial Wastes

Life cycle assessment of pavements: reviewing research challenges and opportunities

Shear transfer behavior between substrate recycled aggregate concrete and new natural aggregate concrete

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