Recycled aggregate from C&amp;D waste &amp; its use in concrete – A breakthrough towards sustainability in construction sector: A review

Behera, Monalisa; Bhattacharyya, S. K.; Minocha, A.K.; Deoliya, Rajesh; Maiti, Soumitra

doi:10.1016/j.conbuildmat.2014.07.003

Cited by 981 publications

(377 citation statements)

References 88 publications

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“…The inverse trend between the RCA content and compressive strength was probably due to the poor quality of the adhered mortar, which underwent crushing process, that weakened the ITZ in the concrete. The presence of adhered residual cement mortar on the RCA surface was in accordance to porous, rough [2] and weak interfacial bond strengths between the aggregate and the presence of micro cracks and fissures, which could decrease the bonding with the surrounding matrix [5]. Therefore, by giving ultimate load to the concrete, the weak sections would have greater probability to be interconnected between each other as the RCA content increases.…”

Section: Compressive Strengthmentioning

confidence: 95%

“…The actual concrete strength differs from compressive strength of the original concrete used as recycled aggregates. The reduction in compressive strength is not prominent, when the RCA replacement is relatively up to 30% [5]. The compressive strength of a recycled aggregate concrete becomes unsatisfactory when high RCA percentage is used to substitute natural aggregates.…”

Section: Introductionmentioning

confidence: 95%

“…The concept of reusing and utilizing RCA from CDW has been used since the World War II in Europe as unbound sub-base or main load-bearing layer material of the pavement [5]. Natural aggregates cannot be reproduced in a short period of time, and aggregates basically hold 60% to 75% of the concrete volume; thus no doubt RCA is suggested for construction applications.…”

Section: Introductionmentioning

confidence: 99%

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Engineering Behavior of Concrete with Recycled Aggregate

et al. 2016

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Abstract. Concrete is extensively used as construction materials in Malaysia. Concrete contributes suitable feature for construction industry for instance durability, adequate compressive strength, fire resistance, availability and is economic as compared to other construction materials. Depletion of natural resources and disposal of construction and demolition waste remarkably claim environmental threat. In this paper, the engineering behavior, durability, and concrete microstructure of recycled concrete aggregates (RCA) on short-term concrete properties were investigated. The studied concrete at design mix proportion of 1:0.55:2.14:2.61 (weight of cement :coarse aggregates :sand :water) used to obtain medium-high compressive strength with 20%, 50%, and 100% of RCA. Results show that for the same water/cement ratio, RCA replacement up to 50% still achieved the targeted compressive strength of 25 MPa at 28 curing days. Addition, at similar RCA replacement, the highest carbonation depth value was found at 1.03 mm which could be attributed to the pozzolanic reaction, thus led to lower carbonation resistance. Scanning electron microscopy microstructure shows that the RCA surface was porous and covered with loose particles. Moreover, the interfacial transition zone was composed of numerous small pores, micro cracks, and fissures that surround the mortar matrix. On the basis of the obtained results, recommendable mineral admixtures of RCA are necessary to enhance the quality of concrete construction.

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Section: Compressive Strengthmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

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Engineering Behavior of Concrete with Recycled Aggregate

et al. 2016

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“…Concrete has a very important role in the economy development of a country due to its large volume utilization. In the world, it uses approximately 20 billion tons of raw materials (coarse aggregate) each year [1,2].…”

Section: Introductionmentioning

confidence: 99%

Research experiences on the reuse of industrial waste for concrete production

2017

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Abstract. The aim of this study was to assess the feasibility of concrete production using different kinds of industrial wastes as "recycled aggregate". The wastes studied in this work were: fly ashes and slags from Electric Arc Furnace (EAF) steel plant; foundry sands produced from foundry dies; slags from lead processing; Waelz slags; solid residues from municipal solid waste incineration (MSWI) plant (with mass-burning kiln and fluidized bed reactor); sludge from industrial wastewater treatment plants. Good compressive strength (similar to natural concrete) was achieved after 28 days of curing by concrete mixtures obtained with the partial replacement (from 7% to 40% by weight) of natural aggregates with slags from lead processing, foundry sands, Waelz slags and bottom ashes from MSW incineration. The worst mechanical and leaching behaviours were shown by concrete samples containing EAF fly ashes and sludge from industrial wastewater treatment. For the residues with the best performance, concrete products (kerbs and flat tiles) were casted. Their mechanical and leaching characterization has shown that the reuse of these residues for concrete product is feasible.

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“…Concrete, thereby cement production consumes much energy and large amounts of natural resources. It causes environmental, energy and economic losses as it exploits 50% of raw material, 40% of total energy, as well as generates 50% of total waste [1,2]. Cement industry contributes to production of about 7% of all CO 2 generated in the world [3].…”

Section: Introductionmentioning

confidence: 99%

Investigating the Influence of Waste Basalt Powder on Selected Properties of Cement Paste and Mortar

Dobiszewska

Beycioğlu

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Concrete is the most widely used man-made construction material in civil engineering applications. The consumption of cement and thus concrete, increases day by day along with the growth of urbanization and industrialization and due to new developments in construction technologies, population growing, increasing of living standard. Concrete production consumes much energy and large amounts of natural resources. It causes environmental, energy and economic losses. The most important material in concrete production is cement. Cement industry contributes to production of about 7% of all CO 2 generated in the world. Every ton of cement production releases nearly one ton of CO 2 to atmosphere. Thus the concrete and cement industry changes the environment appearance and influences it very much. Therefore, it has become very important for construction industry to focus on minimizing the environmental impact, reducing energy consumption and limiting CO 2 emission. The need to meet these challenges has spurred an interest in the development of a blended Portland cement in which the amount of clinker is reduced and partially replaced with mineral additives -supplementary cementitious materials (SCMs). Many researchers have studied the possibility of using another mineral powder in mortar and concrete production. The addition of marble dust, basalt powder, granite or limestone powder positively affects some properties of cement mortar and concrete. This paper presents an experimental study on the properties of cement paste and mortar containing basalt powder. The basalt powder is a waste emerged from the preparation of aggregate used in asphalt mixture production. Previous studies have shown that analysed waste used as a fine aggregate replacement, has a beneficial effect on some properties of mortar and concrete, i.e. compressive strength, flexural strength and freeze resistance also. The present study shows the results of the research concerning the modification of cement paste and mortar with basalt powder. The modification consists in that the powder waste was added as partial replacement of cement. Four types of common cement were examined, i.e. CEM I, CEM II/A-S, CEM II/A-V and CEM II/B-V. The percentages of basalt powder in this research are 0%, 1%, 2%, 3%, 4%, 6%, 8% and 10% by mass. Results showed that the addition of basalt powder improved the strength of cement mortar. The use of mineral powder as the partial substitution of cement allows the effective management of industrial waste and improves some properties of cement mortar.

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Recycled aggregate from C&D waste & its use in concrete – A breakthrough towards sustainability in construction sector: A review

Cited by 981 publications

References 88 publications

Engineering Behavior of Concrete with Recycled Aggregate

Engineering Behavior of Concrete with Recycled Aggregate

Research experiences on the reuse of industrial waste for concrete production

Investigating the Influence of Waste Basalt Powder on Selected Properties of Cement Paste and Mortar

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