characteristics of recycled concrete

Materials Free Full-Text Characteristics of Recycled

High-performance concrete has low tensile strength and brittle failure. In order to improve these properties of unreinforced concrete, the effects of adding recycled polypropylene fibers on the mechanical properties of concrete were investigated. The polypropylene fibers used were made from recycled

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Liquefaction characteristics of recycled concrete

2019-5-1 · Current studies primarily focus on the physical properties and shear strength responses of C&D materials. In this study, the dynamic behaviors (dynamic stress-strain behavior and liquefaction resistance) of recycled concrete aggregate (RCA) and quartz sand in an undrained condition were investigated through cyclic triaxial tests and compared.

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(PDF) Characteristics of recycled aggregate concretes

The engineering characteristics of the concretes derived from this study suggest that the recycled concrete aggregates (RCA) produced from the demolition waste in Kuwait are capable of making good

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Strength Characteristics of Recycled Concrete after

The result of the permeability test shows that the porosity of recycled concrete is large when taken as a whole, and the water content is higher after steeping, which reduces the strength of the material. Mercury intrusion results also show that the pore structure of recycled aggregate is poor and that there are more internal micro-cracks.

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Performance characteristics of recycled concrete

2020-2-19 · Review Article Performance characteristics of recycled concrete aggregate as an unbound pavement material S. Jayakodyb,*, C. Gallagea, J. Ramanujama a School of Civil Engineering & Built Environment, Science and Engineering Faculty, Queensland University of Technology, Brisbane, Australia b Faculty of Engineering, South Eastern University of Sri Lanka, P.O. Box 01, University

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Characteristics of Recycled Concrete Aggregates from

2017-10-1 · Therefore, properties of recycled concrete aggregates (RCA) produced from construction and demolition waste (C&DW) of precast slab block buildings build between 1950s to 1990s are not sufficiently known. The demolition of these buildings is very rare today, but it can be assumed an increase in demolitions of these buildings in the future.

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Performance characteristics of recycled concrete

Use of recycled concrete aggregates (RCA) as a pavement material is one of the most sustainable engineering applications for the pavement industry. Investigation on the performance characteristics of RCA, such as elastic and plastic deformations of RCA is therefore, needed to assess RCA's application as an unbound pavement material.

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PROPERTIES OF RECYCLED AGGREGATE CONCRETE

2015-2-18 · been shown that recycled concrete aggregate has a significantly higher absorption level compared to natural aggregates. The reason for that is that the original cement mortar, which is an integral part of the recycled aggregate, has a significantly

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Characteristics of the carbonation resistance of

2013-12-1 · The porous characteristic of RFA increases its water absorption, leading to many microflaws formed inside the concrete (as proven in the following microanalysis). These microflaws weaken the anti-permeability of concrete and make it easy to be carbonated.

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The Environmental Impact of Recycled Concrete

2012-8-14 · mechanical characteristics. The quality of aggregates made of recycled concrete affects directly the properties of new concrete mixes. Some recycled aggregate properties, such as dimensions, resistances and water absorption are investigated. Aggregates influence directly porosity and

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Performance characteristics of recycled concrete

2020-2-19 · Review Article Performance characteristics of recycled concrete aggregate as an unbound pavement material S. Jayakodyb,*, C. Gallagea, J. Ramanujama a School of Civil Engineering & Built Environment, Science and Engineering Faculty, Queensland University of Technology, Brisbane, Australia b Faculty of Engineering, South Eastern University of Sri Lanka, P.O. Box 01, University

Get Price

Performance characteristics of recycled concrete

Use of recycled concrete aggregates (RCA) as a pavement material is one of the most sustainable engineering applications for the pavement industry. Investigation on the performance characteristics of RCA, such as elastic and plastic deformations of RCA is therefore, needed to assess RCA's applicatio

Get Price

Strength Characteristics of Recycled Concrete after

Due to the recycling of construction waste, recycled concrete has gradually become a viable material in the construction industry. To study the strength property of the recycled concrete after freeze-thawing experiments, recycled concrete and ordinary concrete were tested for their post-test strength after freeze-thawing for 0, 50, and 100 times.

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Durability characteristics of recycled aggregate

2013-9-10 · Durability characteristics of recycled aggregate concrete were studied with Rapid chloride penetration test (as per ASTMC1202), sorptivity test and acid test to assess resistance against chloride ion penetration, capillary suction and chemical attack respectively.

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Strength and Deformation Characteristics of Recycled

2012-5-7 · To investigate the feasibility of the use of recycled concrete aggregate as the backfill material of geotechnical engineering structures, such as embankments, geo-synthetic reinforced soil retaining walls and bridge abutments, a series of drained triaxial compression tests were performed. Both axial and lateral strains were measured locally.

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PROPERTIES OF RECYCLED AGGREGATE CONCRETE

2015-2-18 · recycled coarse aggregate typically ranges within the interval from 3.5% to 10%, and for the fine aggrega-te, within the interval from 5.5% to 13% [2,7]. According to the Japanese standard for the use of recycled aggregate as a component of concrete, there is a limit so that a coarse fraction of recycled

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Mechanical Properties Of Recycled Aggregates Concrete

Incorporation of the old concrete as aggregate into the new concrete is a viable option, however, only if the recycled concrete aggregate and the new concrete containing it possess those characteristics needed to perform satisfactorily in the environment and service conditions in which they are placed.

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STRENGTH AND DEFORMATION CHARACTERISTICS

A series of consolidated drained triaxial compression tests were performed on recycled concrete aggregates to investigate the feasibility of their use as a backfill material for geotechnical engineering structures requiring a high stability while allowing a limited amount of deformation, such as embankments and conventional type and geosynthetic-reinforced soil retaining walls supporting

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The Environmental Impact of Recycled Concrete

2012-8-14 · 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 Sand Content on Characteristics of

Subsequently, the effect on the characteristics of recycled concretes made with a water/cement ratio of 0.50, when part of the recycled aggregate was replaced with recycled sand, was studied. The results obtained on mortars indicate that the use of up to 20% recycled sand caused a drop in the compressive and flexural strength.

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Performance characteristics of recycled concrete

2020-2-19 · Review Article Performance characteristics of recycled concrete aggregate as an unbound pavement material S. Jayakodyb,*, C. Gallagea, J. Ramanujama a School of Civil Engineering & Built Environment, Science and Engineering Faculty, Queensland University of Technology, Brisbane, Australia b Faculty of Engineering, South Eastern University of Sri Lanka, P.O. Box 01, University

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Durability And Performance Characteristics Of Recycled

2008-11-3 · characteristics of fresh and hardened recycled aggregate concrete and natural aggregate concrete is relatively narrower han reported for laboratoryt -crushed recycled aggregate concrete mixes. For concrete without blast furnace slag, having similar volumetric mix proportions and workability,

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STRENGTH AND DEFORMATION CHARACTERISTICS

A series of consolidated drained triaxial compression tests were performed on recycled concrete aggregates to investigate the feasibility of their use as a backfill material for geotechnical engineering structures requiring a high stability while allowing a limited amount of deformation, such as embankments and conventional type and geosynthetic-reinforced soil retaining walls supporting

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Strength Characteristics Of Concrete With Recycled

Recycled concrete can produce an alternative aggregate for structural concrete as partial or total replacement. In this paper an attempt is made to utilize recycled concrete aggregates and artificial sand (machine made sand) in concrete, using IS10262:2009 as guideline for designing the concrete

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Mechanical Properties Of Recycled Aggregates Concrete

Incorporation of the old concrete as aggregate into the new concrete is a viable option, however, only if the recycled concrete aggregate and the new concrete containing it possess those characteristics needed to perform satisfactorily in the environment and service conditions in which they are placed.

Get Price

The Environmental Impact of Recycled Concrete

2012-8-14 · 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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An evaluation of the recycled aggregate characteristics and

2020-1-7 · An evaluation of the recycled aggregate characteristics and the recycled aggregate concrete mechanical Construction and Building Materials ( IF 4.419) Pub Date : 2020-01-07, DOI: 10.1016/j Guoliang Bai, Chao Zhu, Chao Liu, Biao Liu

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Use of Recycled Concrete Aggregate in PCCP: Literature

2019-1-14 · Properties and Characteristics of Recycled Concrete Aggregate A concrete pavement’s strength and performance is very dependent on the aggregates used to produce the concrete. Recycled concrete aggregates are different in many ways from virgin aggregates as shown in Table 1. Table 1. Comparison of typical virgin aggregate and recycled concrete

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The Use of Recycled Material in Concrete ukdiss

2019-12-10 · Also, the use of recycled concrete aggregates can be very effective for use as a weak or filling concrete and would be of benefit in areas with very little natural virgin aggregate available to the consumer without large transport costs (9) 2.7 Characteristics of Recycled Aggregate in the Eurocodes 2.7.1 Compressive strength

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Is It Possible to Recycle Concrete? ArchDaily

2020-2-17 · The German Committee for Structural Concrete guideline, for example, prescribes a limit on the proportion of recycled aggregate at 45%. In 2006, material tests in Switzerland showed, however, that

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