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EFFECT OF RECYCLED CONCRETE AGGREGATE QUALITY ON

EFFECT OF RECYCLED CONCRETE AGGREGATE QUALITY ON

EFFECT OF RECYCLED CONCRETE AGGREGATE QUALITY

2020-7-14  The objective of this study is to investigate the effect of recycled concrete aggregate (RCA) quality on the properties of hardened concrete properties such as compressive strength, splitting tensile strength, density, water absorption capacity and porosity accessible to water. The RCA used in this study was obtained from the crushing of waste ...

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The Effect of Recycled Aggregate Quality on Concrete ...

The Effect of Recycled Aggregate Quality on Concrete Properties 1Salahaldein Alsadey and 2Abdelnaser Omran and 1Issa Amaish 1Department of Civil Engineering, Faculty of Engineering, Bani Waleed ...

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(PDF) The Effect of Recycled Aggregate Quality on

Using unwashed recycled aggregate in concrete will affect its strength. The effect will be more obvious at lower water/cement ratios. When the recycled aggregate was washed, these negative effects ...

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EFFECT OF RECYCLED CONCRETE AGGREGATE QUALITY

Request PDF EFFECT OF RECYCLED CONCRETE AGGREGATE QUALITY ON PROPERTIES OF CONCRETE The possibility of the use of recycled aggregates from the construction industry in green concrete ...

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The Effect of Recycled Aggregate Quality on Concrete ...

The Effect of Recycled Aggregate Quality on Concrete Properties. Authors : Salahaldein Alsadey , Abdelnaser Omran and Issa Amaish. Abstract: Waste from construction and demolition are one of the main types of wastes produced worldwide. The aim of this study is to lessen the environmental problems produced by the dumping of waste from ...

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Effect of the Quality of Recycled Aggregate on

2020-4-1  Effect of the Quality of Recycled Aggregate on Compressive Strength of Recycled Aggregate Concrete . M. 2Chakradhara Rao1, Ramnarayan . 1,2Civil Engineering Department, Institute of Technology, Guru Ghasidas Vishwavidyalaya (A Central university), Bilaspur, C.G., India – 495 009 . raoakradhar[at]gmail, rnbphoolasar99[at]gmail

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EFFECT OF RECYCLED AGGREGATE QUALITY ON

2012-8-24  The effect of recycled aggregate quality on the variation of compressive strength was examined at several water-cement ratios. The variation of recycled aggregate concrete strength was higher than that for normal aggregates but still fellbelow the JSCE-specified limit, except when combining different recycled aggregate types.

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Effect of Low-Quality Recycled Concrete Aggregate on ...

Recycled concrete aggregate (RCA) is the result of the demolition of concrete structures and pavements. Using RCA to replace quarried aggregates in paving projects is one way to utilize the millions of tons of concrete waste that is produced annually and landfilled.

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Effect of Low-Quality Recycled Concrete Aggregate on ...

Recycled concrete aggregate (RCA) is the result of the demolition of concrete structures and pavements. Using RCA to replace quarried aggregates in paving projects is one way to utilize the millions of tons of concrete waste that is produced annually and landfilled.

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The effect of recycled concrete aggregate properties on ...

2011-10-1  While other high quality aggregate sources may be available, their proximity to centers of urban growth and construction demand may be limited. Recycled concrete aggregate (RCA), produced by crushing concrete from demolished concrete structures is a potential solution to this problem.

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EFFECT OF RECYCLED AGGREGATE QUALITY ON

2012-8-24  The effect of recycled aggregate quality on the variation of compressive strength was examined at several water-cement ratios. The variation of recycled aggregate concrete strength was higher than that for normal aggregates but still fellbelow the JSCE-specified limit, except when combining different recycled aggregate types.

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Effect of Recycled Aggregate Quality on the Bond

2019-5-26  To more thoroughly understand the effects of the recycled aggregate quality on the bond behavior of the interaction between the recycled aggregate concrete and the steel rebar, different water-to-cement ratios (0.30, 0.45, 0.60, and 0.75) and different diameters of the deformed steel rebar (13 and 19 mm) were considered.

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Effect of Recycled Aggregate Quality on the Bond Behavior ...

During the aggregate crushing process, natural aggregate and clinging mortar from existing concrete will inevitably produce small cracks and weak bonds... DOAJ is a community-curated online directory that indexes and provides access to high quality, open access, peer-reviewed journals.

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Effect of recycled concrete aggregates on strength and ...

2018-11-1  produced in a quality-controlled environment, and contains little or no deleterious materials. The repetitive construction environment for precast concrete would also allow the effects of RCA to be closely monitored and controlled. Ultimately, Effect of recycled concrete aggregates on strength and stiffness gain of concrete and on bond strength

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INFLUENCE OF RECYCLED AGGREGATE QUALITY

2016-5-24  The reason for the drop in quality is mainly related to the quality of the recycled aggregate. The high water absorption of recycled aggregate has a negative impact of concrete mix workability and influences the water-cement ratio. This paper presents the effect of recycled aggregate quality on the physical and mechanical properties of concrete.

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Effect of Modification of Recycled Concrete Aggregates on ...

2021-5-28  In the present paper, laboratory trials were conducted to investigate the possibility of 100 % recycled concrete aggregates as a replacement of coarse aggregates in pavement quality concrete (PQC) design mix (M40). Initially characterisation of recycled concrete aggregate is done to meet the requirements of its use as an aggregate in PQC.

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Effect of Recycled Concrete Aggregate Properties on the ...

2018-5-4  Effect of Recycled Concrete Aggregate Properties on the Behaviour of New Concrete By FARAZ AHIMOGHADAM Under the supervision of Dr. Leandro F.M. Sanchez Co-Supervisor Dr. Martin Noel Thesis submitted In partial fulfillment of the requirements For the MASc. degree in Civil Engineering Civil Engineering Department Faculty of Engineering

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EFFECTS OF RECYCLED AGGREGATES ON CONCRETE

2018-1-10  recycling. A recycled aggregate concrete (RAC) produced with the combination of natural aggregate (NA) and recycled concrete aggregate (RCA) is obviously more sustainable and economical than using conventional natural aggregate concrete (NAC) alone. The aim of this study is to compare the engineering properties as well as

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Quality Improvement Techniques for Recycled Concrete ...

The main problem in using recycled concrete aggregate (RCA) as a construction material is due to the weak adhered mortar which usually has higher porosity and water absorption. It also has lower strength compared to natural aggregate (NA), and it often forms weak interfacial transition zones in the recycled aggregate concrete (RAC). These weak ...

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The Environmental Impact of Recycled Concrete

2012-8-14  4. Characteristics of recycled concrete aggregate The international literature provided numerous works at recycled concrete aggregate area, mainly from the beginning of 1980 (Hansen, 1992). The topics most investigated are durability and mechanical characteristics. The quality of aggregates made of recycled concrete affects directly the

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Effect of recycled aggregate quality on the bond behavior ...

The properties of concrete incorporated with the recycled aggregate of various qualities can be controlled, and the variability in its strength can also be reduced. This study aims to promote the application of recycled aggregate by investigating the effects of recycled aggregate quality (i.e., water absorption and the number of fine particles ...

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Effect of recycled concrete aggregates on strength and ...

2018-11-1  produced in a quality-controlled environment, and contains little or no deleterious materials. The repetitive construction environment for precast concrete would also allow the effects of RCA to be closely monitored and controlled. Ultimately, Effect of recycled concrete aggregates on strength and stiffness gain of concrete and on bond strength

get price

Effect of Recycled Aggregate Quality on the Bond Behavior ...

During the aggregate crushing process, natural aggregate and clinging mortar from existing concrete will inevitably produce small cracks and weak bonds... DOAJ is a community-curated online directory that indexes and provides access to high quality, open access, peer-reviewed journals.

get price

INFLUENCE OF RECYCLED AGGREGATE QUALITY

2016-5-24  The reason for the drop in quality is mainly related to the quality of the recycled aggregate. The high water absorption of recycled aggregate has a negative impact of concrete mix workability and influences the water-cement ratio. This paper presents the effect of recycled aggregate quality on the physical and mechanical properties of concrete.

get price

EFFECT OF RECYCLED CONCRETE AGGREGATE ...

2021-5-28  EFFECT OF RECYCLED CONCRETE AGGREGATE QUALITY ON PROPERTIES OF CONCRETE - 科研通. 已完结. 文献求助详情. 标题. [高分] EFFECT OF RECYCLED CONCRETE AGGREGATE QUALITY ON PROPERTIES OF CONCRETE. 领域. 材料科学 复合材料 抗压强度 极限抗拉强度 灰浆 多孔性 吸水率 建筑业 混凝土性能 骨料(复合 ...

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Effects of environmental actions, recycled aggregate ...

2021-3-15  Effects of environmental actions, recycled aggregate quality and modification treatments on durability performance of recycled concrete Bin Leia,b, Wengui Lib,∗, Zhuo Tangb, Zhaohang Lia, Vivian W.Y. Tam c a School of Civil Engineering and Architecture, Nanchang University, Jiangxi

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Quality improvement of recycled aggregate concrete using ...

N2 - Recycled aggregates (RA) are obtained from construction and demolished waste, laboratory crushed concrete and concrete waste at RMC plants. The concrete made from recycled aggregate is known as recycled aggregate concrete. The use of recycled aggregate is

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Effect of Quality and Replacement Rate on the Double ...

Abstract. Recycled aggregate can be used as a substitute for natural aggregate to produce good regenerated concrete, so the text use recycled coarse aggregate and recycled fine aggregate to substitute for natural aggregate with different replacement rates preparing double recycled aggregate concrete, and researching the effect of the quality and replacement rate of recycled aggregate on the ...

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Study of recycled concrete aggregate quality and its ...

2018-12-27  achieve a full understanding of recycled concrete . aggregates and propose a design methodology for structural recycled concrete, based on the physical-mechanical properties of recycled concrete coarse aggregates studied using the database. The quality of recycled aggregate concrete depends on the properties of the recycled aggre-gates.

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Effects of Recycled Aggregate on Concrete Mix and

2019-6-25  The unit weight of the concrete ranged from 2365 to 2175 kg/m 3, depending on aggregate content (Figure 6).Increasing the recycled aggregate content reduces the unit weight and density of the concrete, resulting in lighter concrete (Figure 6).The unit weights of the 15%, 20%, and 25% mixes were reduced by 8%, 11%, and 11.5%, respectively, compared to plain concrete.

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