Enhancing the durability properties of concrete prepared with coarse recycled aggregate

Kou, Shi Cong; Poon, Chi Sun

doi:10.1016/j.conbuildmat.2012.02.032

Cited by 485 publications

(202 citation statements)

References 20 publications

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“…However, it was monitored that the use of recycled aggregates prevented early shrinkage development for 50 N/mm2 design strength concretes which is in contrast with the previous findings [31,33]. Results for 40 N/mm 2 design strength RAC mixes showed noticeable increase at 21 days and onwards.…”

Section: Flexural Strengthcontrasting

confidence: 54%

“…There is contradicting results on the behaviour of RA on the concrete carbonation resistance. Previous study by Kou [31] indicated that carbonation resistance decreased with the increased RA content. In contrast to that, Soares [35] stated RA did not have significant influence on the carbonation resistance and reported slightly higher results compared to reference mix.…”

Section: Introductionmentioning

confidence: 99%

“…Kou [31] stated that increase in the drying shrinkage was proportional to the RA content used. According to Limbachiya [18], the use of RGS up to 20% was observed not to effect drying shrinkage.…”

Section: Introductionmentioning

confidence: 99%

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Portland-composite and composite cement concretes made with coarse recycled and recycled glass sand aggregates: Engineering and durability properties

Bostancı

Limbachiya

Kew

2016

Construction and Building Materials

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Sustainable development approach demands the use of environmentally friendly materials. One possible way to encourage sustainable approach is via use of Portland cement (PC) replacement through use of permitted cement constituents in conformity with BS EN 197-1, to lower carbon footprint, and use of recycled aggregates as permitted within BS 8500, to encourage sustainability. Thus, this research study aimed to produce low carbon and sustainable concrete. For this aim, engineering and durability properties of equal 28-day design strength (40 and 50 N/mm 2 ) concretes made with Portland-composite and composite cements, CEM II/B-M and CEM V/A respectively, and partially substituted coarse recycled (RA) and washed recycled glass sand (RGS), 25% and 15% respectively, aggregates was investigated. The loss of workability was found to be larger for particularly CEM V/A and recyled aggregate concrete (RAC) mixes. Studies of hardened concrete properties, comprising bulk engineering properties (compressive cube and cylinder strength, flexural strength, drying shrinkage) and durability (initial surface absorption) showed enhanced performance for CEM II/B-M and CEM V/A mixes of equivalent strength natural aggregate concrete mixes (NAC), except resistance to carbonation. However, the use of CEM II/B-M and CEM V cements in RAC mixes slightly reduced the engineering and durability properties compared to corresponding NAC mixes.Keywords: Carbonation, initial surface absorption, drying shrinkage, fly ash, ground granulated blast-furnace slag, silica fume, recycled glass sand, coarse recycled aggregate Bullet points:Use of CEM II/B-M and CEM V/A cements and coarse recycled aggregates and recycled glass sand in concrete production increased the required superplasticizer demand to achieve the similar consistency.CEM II/B-M cement recycled aggregate concrete mixes indicated either similar or slightly better loss of workability over time compared to corresponding CEM I cement RAC mix.The partial substitution of natural coarse and fine aggregates by 25% coarse recycled and 15% recycled glass sand aggregates reduced the compressive cube strength of concrete approximately by 10%.Recycled aggregates concrete mixes showed dramatically lower compressive cylinder strength results compared to conventional natural aggregate concrete mixes.Drying shrinkage results showed that the contribution of pozzolanic reactions for Portlandslag and composites cement concretes takes place after 14 days.CEM II/B-M cement mixes indicated lower ISAT-10 values as the design strength class increased.Carbonation penetration results showed improvement as the design strength increased for the same cement type concrete mixes.

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Section: Flexural Strengthcontrasting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

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Portland-composite and composite cement concretes made with coarse recycled and recycled glass sand aggregates: Engineering and durability properties

Bostancı

Limbachiya

Kew

2016

Construction and Building Materials

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“…However, if 30% partial replacement of recycled aggregate used in concrete than shrinkage can be as normal as of normal concrete [21] and shrinkage increases with increase in recycled aggregate replacement content as reported by investigation [5]. Many study also reported that the effect of shrinkage can be minimized by incorporating some minerals and admixtures in recycled aggregate concrete [27,38,39].…”

Section: Shrinkagementioning

confidence: 85%

“…On the other hand it was reported that the workability is also directly influenced by the properties of parent concrete as with the better quality of parent concrete the bond development of recycled aggregate and rest ingredients is increased [26,27,34]. On the other hand it was reported by Tavakali et al, [23] that the slump loss of recycled aggregate concrete can be overcome with incorporation of many admixtures, super plasticizer and minerals.…”

Section: Properties Of Fresh Concrete Utilizing Recycled Aggregatementioning

confidence: 96%

Behavior of Concrete Utilizing Recycled Aggregate – A Review

Shrimali¹,

Chauhan²,

Gupta³

et al. 2017

IJERA

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Today's modern era is demanding more and more infrastructure development and with the increasing demand of infrastructure, the demand and supply chain of the construction material are getting affected. With increasing pace of development, a great concern is required towards environment as well as natural resources. In this paper, behavior of concrete utilizing recycled aggregate is critically reviewed. Properties of recycled aggregate are discussed at first, followed by the properties of concrete utilizing recycled aggregate. It has been reported that recycled aggregate was found useful if the replacement level is about 30% .This type of concrete has been used in many applications. Recycled aggregate can be seen as future material which will be eco -friendly and will decrease in project cost.

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The Future and Development Trends of Concrete

2022

Advanced Concrete Technology

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Enhancing the durability properties of concrete prepared with coarse recycled aggregate

Cited by 485 publications

References 20 publications

Portland-composite and composite cement concretes made with coarse recycled and recycled glass sand aggregates: Engineering and durability properties

Portland-composite and composite cement concretes made with coarse recycled and recycled glass sand aggregates: Engineering and durability properties

Behavior of Concrete Utilizing Recycled Aggregate – A Review

The Future and Development Trends of Concrete

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