Durability properties evaluation of self-compacting concrete prepared with waste fine and coarse recycled concrete aggregates

Sasanipour, Hossein; Aslani, Farhad

doi:10.1016/j.conbuildmat.2019.117540

Cited by 113 publications

(50 citation statements)

References 61 publications

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“…Other uses of the RCA include: roads substructures, earth dam construction [35][36][37], paving blocks and structural blocks and bricks manufacture [37,38], bituminous-aggregate mixes [39][40][41][42], road pavements [43], self-compacting concrete [44][45][46], polymer concrete [47], shotcrete [48,49], concrete exposed to elevated temperatures [50], soil stabilization [51], pervious concrete [52], reactive powder concrete [53], artificial reef formation [37].…”

Section: Introductionmentioning

confidence: 99%

Properties of Concrete with Recycled Concrete Aggregate Containing Metallurgical Sludge Waste

et al. 2020

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Sand has been considered to be something of an immeasurable quantity. There are many indications that this view is no longer valid and that the limiting of natural aggregates usage is doubly justified. Firstly, the extraction of natural aggregates is expensive and has a huge impact on the environment. The main issues in sand and gravel mining are the large areas that are affected, ground water level changes, illegal mining, unsuitability of desert and marine sand, and costs of transport. Secondly, metallurgical waste can be used as a substitute for natural aggregates. This is doubly beneficial—the waste is recycled and the use of natural aggregates is reduced. Waste is stored in landfills that take up large areas and there is also the possibility of ground and groundwater pollution by hazardous compounds. The research presented in this article focuses on the technological conditions of using metallurgical waste in its original form and as a component of recycled concrete aggregate (RCA). The use of metallurgical sludge waste or crushed or round RCA to produce concrete deteriorates the consistency and does not significantly affect the air content and density of the concrete mix. RCA lowers the density of hardened concrete. Metallurgical sludge waste or RCA usage adversely affect the absorbability and permeability of concrete. Concrete containing metallurgical sludge waste is of higher compressive strength after 7 and 28 days, with up to 60% of waste as a sand replacement. RCA concrete achieved higher compressive strength also.

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Section: Introductionmentioning

confidence: 99%

Properties of Concrete with Recycled Concrete Aggregate Containing Metallurgical Sludge Waste

et al. 2020

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“…The durability properties of concrete with RA (chloride diffusion, freeze thaw resistance, and abrasion resistance) are still under investigation, since a wide variability in the results is reported [17]. The durability of concrete with recycled concrete aggregates is generally lower in comparison with traditional concrete [17][18][19][20][21]. Pereira et al [22] suggest that the concrete containing recycled concrete aggregates should be avoided in aggressive environments.…”

Section: Introductionmentioning

confidence: 99%

Effect of Parent Concrete on the Performance of Recycled Aggregate Concrete

et al. 2020

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Recycling concrete construction waste is a promising way towards sustainable construction. Indeed, replacing natural aggregates with recycled aggregates obtained from concrete waste lowers the environmental impact of concrete constructions and improves natural resource conservation. This paper reports on an experimental study on mechanical and durability properties of concretes casted with recycled aggregates obtained from two different parent concretes, belonging to two structural elements of the old Cagliari stadium. The effects of parent concretes on coarse recycled aggregates and on new structural concretes produced with different replacement percentages of these recycled aggregates are investigated. Mechanical properties (compressive strength, modulus of elasticity, and splitting tensile strength) and durability properties (water absorption, freeze thaw, and chloride penetration resistance) are experimentally evaluated and analyzed as fundamental features to assess structural concrete behavior. The results show that the mechanical performance of recycled concrete is not related to the parent concrete characteristics. Furthermore, the resistance to pressured water penetration is not reduced by the presence of recycled aggregates, and instead, it happens for the chloride penetration resistance. The resistance to frost–thawing seems not related to the recycled aggregates replacement percentage, while an influence of the parent concrete has been assessed.

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“…ITZ (formed due to the reaction occurring between new aggregate and new mortar) [ 55 ]; 3. ITZ (formed due to reaction between new aggregate and old mortar) [ 56 ]; and 4. ITZ (formed due to reaction between old mortar and RA).…”

Section: Introductionmentioning

confidence: 99%

“…The development of ITZ from old mortar and RA is very slow. And already-formed old ITZ by old mortars has microcracks and voids in it, which is responsible for a reduction in the hardened properties of RA concrete [ 23 , 56 ]. Properties of RA depend upon the source from which it is extracted [ 56 ] and has a direct influence on the RA concrete properties.…”

Section: Introductionmentioning

confidence: 99%

Influence of Design Parameters on Fresh Properties of Self-Compacting Concrete with Recycled Aggregate—A Review

Martínez‐García

Jagadesh²,

Fraile‐Fernández

et al. 2020

Materials

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This article presents an overview of the bibliographic picture of the design parameter’s influence on the mix proportion of self-compacting concrete with recycled aggregate. Design parameters like water-cement ratio, water to paste ratio, and percentage of superplasticizers are considered in this review. Standardization and recent research on the usage of recycled aggregates in self-compacting concrete (SCC) exploit its significance in the construction sector. The usage of recycled aggregate not only resolves the negative impacts on the environment but also prevents the usage of natural resources. Furthermore, it is necessary to understand the recycled aggregate property’s role in a mixed design and SCC properties. Design parameters are not only influenced by a mix design but also play a key role in SCC’s fresh properties. Hence, in this overview, properties of SCC ingredients, calculation of design parameters in mix design, the effect of design parameters on fresh concrete properties, and the evolution of fresh concrete properties are studied.

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Durability properties evaluation of self-compacting concrete prepared with waste fine and coarse recycled concrete aggregates

Cited by 113 publications

References 61 publications

Properties of Concrete with Recycled Concrete Aggregate Containing Metallurgical Sludge Waste

Properties of Concrete with Recycled Concrete Aggregate Containing Metallurgical Sludge Waste

Effect of Parent Concrete on the Performance of Recycled Aggregate Concrete

Influence of Design Parameters on Fresh Properties of Self-Compacting Concrete with Recycled Aggregate—A Review

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