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Strength and durability of concrete containing recycled

Sep 01, 2018  Limbachiya et al. [34] investigated the strength and durability properties of concrete made using recycled concrete aggregates obtained from rejected precast concrete members. The flexural strength and modulus of elasticity of concrete containing recycled aggregates were found to be similar to concrete made with natural aggregates.

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Strength and Durability Evaluation of Recycled Aggregate

May 14, 2015  Aggregate strength, gradation, absorption, specific gravity, shape and texture are some of the physical and mechanical characteristics that contribute to the strength and durability of concrete. In general, the quality of recycled aggregate depends on the loading and exposure conditions of the demolished structures.

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Strength and durability of recycled aggregate concrete

Apr 01, 2012  The recycled aggregate having maximum particle size of 19 mm was obtained from a local CD waste facility. The record showed that the parent concrete from which recycled aggregate was produced had a designed compressive strength of 28 MPa (4000 psi). It had been manufactured using Type I Portland cement, normal sand and crushed limestone aggregate.

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Strength and Durability Evaluation of Recycled Aggregate

Durability Durability of Recycled Aggregate (RA) can be influenced by coarse aggregate replacement ratio, concrete age, w/c ratio, and moisture content; generally, a lower w/c ratio generates a more durable concrete mix. RA concrete is less durable due to high porosity of recycled aggregate.

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Strength and durability of concrete containing recycled

Sep 01, 2018  Strength and durability properties of concrete made with recycled concrete aggregates (RCA) were studied by an experimental investigation. The variables considered in the study are water-cement ratio, cement content and percentage of replacement of coarse aggregate (CA).

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Strength and Durability Evaluation of Recycled Aggregate

May 16, 2015  Aggregate strength, gradation, absorption, specific gravity, shape and texture are some of the physical and mechanical characteristics that contribute to the strength and durability of concrete. In...

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The Durability of Recycled Fine Aggregate Concrete: A

Jan 31, 2022  The fully recycled fine aggregate obtained by this process has excellent physical properties and can replace 100% of the river sand in concrete [ 32 ]. In this paper, the durability of RFAc is reviewed in terms of impermeability, drying shrinkage, carbonation resistance, chloride penetration resistance, acid resistance, and freeze–thaw resistance.

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Durability of recycled aggregate concrete – A review

May 01, 2018  Durability of concrete is the ability of concrete to resist various types of damage, maintaining its strength and appearance integrity for its service period of exposure to its surrounding environment. Compared with nature aggregate concrete (NAC), the durability of RAC is usually weaker than NAC due to the adhered mortar on the RA.

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Durability of recycled aggregate concrete - ScienceDirect

Mar 01, 2013  Durability and mechanical properties of recycled concrete have been analysed. A total of 24 mixtures at ages of 28, 180 and 365 days were studied. The durability is lower but for lowers water/cement ratios the loss is less. The loss of mechanical properties is greater for lower water/cement ratios. Previous article Next article Keywords

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Mechanical Properties and Durability Performance of

Feb 26, 2022  The 28-days compressive strength of the rubberized recycled aggregate concrete with 5% crumb rubber concentration is reduced by 21.1% and 32.8% when compared to recycled aggregate concrete and control concrete, respectively.

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Strength and Durability Evaluation of Recycled Aggregate

Abstract: This paper discusses the suitability of producing concrete with 100 % recycled aggregate to meet durability and strength requirements for different applications. Aggregate strength, gradation, absorption, specific gravity, shape and texture are some of the physical and mechanical characteristics that contribute to the strength and ...

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Strength and Durability of Recycled Aggregate Concrete

Jan 01, 2002  The experimental results indicated that the kinds of strengths, static compressive elastic modulus and durability of recycled concrete were decreased at engineering-acceptable level compared with ...

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Strength and durability of recycled aggregate concrete

Feb 02, 2012  near 60% in recycled aggregate with 4–8 mm particle size. Hasaba et al. [7] reported that 35.5% of old mortar is attached to natural gravel in recycled aggregate with 5–25 mm particle size produced from concrete with 24 MPa compressive strength. For the same size of recycled aggregate, the attached mortar fraction increased

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Improvement of Bond Strength and Durability of Recycled Aggregate ...

Jul 02, 2021  This paper aims to experimentally investigate the effects of high volume cement replacement of blast furnace slag (BFS) on the bond, strength and durability of recycled aggregate concrete (RAC). Concrete mixtures were prepared containing 0%, 15%, 30%, 45%, 60% and 75% BFS with each of recycled aggregate and natural aggregate.

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Strength of Recycled Aggregate Concrete SpringerLink

Nov 15, 2017  The compressive strength of recycled aggregate concrete (RAC) is lower than that of natural aggregate concrete (NAC) under the condition that water-cement ratios (w/c) are same and the development of the compressive strength over time of RAC is basically the same as that of NAC. ... Mandal S, Gupta A. Strength and durability of recycled ...

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Mechanical Properties and Durability of Recycled Aggregate

Jun 30, 2021  Therefore, this paper studied the mechanical properties and durability of recycled aggregate permeable concrete. At first, a few properties of the target material, including bulk density, moisture content, water absorption, compressive strength, and water permeability coefficient, were tested respectively. Then, based on the orthogonal test ...

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Experimental study on strength behaviour of recycled aggregate concrete

Mar 10, 2013  The concrete specimen with. 100% recycled coarse aggregate at 28 days of curing has the lowest tensile strength, which was only 1.952 N/mm2. It is around 38.81% drop when compared to control. concrete specimen. There is a drop in tensile strength of 10.66%, 18.18%, 24.76% and 34.79% for the concrete.

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Mechanical and Durability Properties of Recycled Aggregate

May 10, 2019  Recycled aggregate concrete provides an effective way to use industrial waste as well as construction waste and due to problems of land filling which lead to ecological and environmental destructions, (Xiao et al. 2005; Breccolotti and Materatti 2010).Recycled aggregate concrete (RAC) has an important and wide application in engineering community,

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Performance Evolution of Recycled Aggregate Concrete under

The high porosity of recycled coarse aggregate, which results in recycled aggregate concrete (RAC) more vulnerable to freeze–thaw (FT) damage and chemical attack, is a dominant factor that limits the industrialization of recycled aggregate concrete in civil engineering. This paper presents an experimental study on the combined effects of FT damage and sulfate attack on

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Preparation and performance analysis of recycled PET fiber

2 天前  Alrshoudi et al. [28,29] showed that utilization of waste PP fibers improved the compressive strength and durability of concrete, and significantly reduced the dry shrinkage and creep of concrete. Won et al. [ 30 ] found that recycled PET fiber reinforced cement composites have excellent durability.

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Strength and Durability Properties of Treated Recycled Aggregate ...

Oct 10, 2021  The use of recycled aggregate (RA) generated from construction and demolition (CD) waste to produce new concrete would minimize the need for the use of natural aggregate (NA). The authors propose a new hybrid method in the present work by combining presoaking in mild acetic acid followed by mechanical grinding to produce high-quality RA.

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Strength and Durability Evaluation of Recycled Aggregate Concrete

May 16, 2015  The tests were conducted on concrete made from three sources of recycled aggregates: (1) old concrete with unknown strength, (2) old concrete with a known compressive strength of 21 MPa, and (3 ...

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Mechanical Properties and Durability Performance of Recycled Aggregate ...

Feb 26, 2022  The results revealed that the workability and mechanical properties of the recycled aggregate concrete can be used for structural applications when 5% of crumb rubber are used to replace recycled aggregates. The 28-days compressive strength of the rubberized recycled aggregate concrete with 5% crumb rubber concentration is reduced by 21.1% and ...

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Durability of recycled aggregate concrete - Academia

The durability of the 33 34 concretes made with recycled aggregate is worse due to the intrinsic porosity of them. 35 36 These differences decrease for low w/c ratios, as in this case the most influential factor 37 38 is the low porosity obtained in the new improved cement paste.

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The Durability of Recycled Fine Aggregate Concrete: A Review

Jan 31, 2022  The results show that the content of old mortar and the quality of recycled concrete are closely related to the durability of prepared RFA concrete. For example, the drying shrinkage value with a 100% RFA replacement rate is twice that of normal concrete, and the depth of carbonation increases by approximately 110%.

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Strength and Durability Evaluation of Recycled Aggregate Concrete

Short and long-term behavior of structural concrete with recycled concrete aggregate By S. Manzi " Polystyrene and Polyethylene with Clam Shell aggregate in cement as eco-friendly building materials "

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Strength and Durability Evaluation of Recycled

May 16, 2015  The tests were conducted on concrete made from three sources of recycled aggregates: (1) old concrete with unknown strength, (2) old concrete with a known compressive strength of 21 MPa, and (3 ...

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Strength and Durability Properties of Treated Recycled Aggregate ...

Oct 10, 2021  The use of recycled aggregate (RA) generated from construction and demolition (CD) waste to produce new concrete would minimize the need for the use of natural aggregate (NA). The authors propose a new hybrid method in the present work by combining presoaking in mild acetic acid followed by mechanical grinding to produce high-quality RA.

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Strength and Durability Properties of Concrete with Recycled

Disposal of plastic waste is considered to be one of the biggest problems in the world over as plastic waste pollutes rivers, land, and oceans. Currently, India generates about 26000 tonnes of plastic a day, according to the statistics given by

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Strength of Recycled Aggregate Concrete SpringerLink

Nov 15, 2017  The compressive strength of recycled aggregate concrete (RAC) is lower than that of natural aggregate concrete (NAC) under the condition that water-cement ratios (w/c) are same and the development of the compressive strength over time of RAC is basically the same as that of NAC. ... Mandal S, Gupta A. Strength and durability of recycled ...

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Mechanical Properties and Durability of Recycled Aggregate

Jun 30, 2021  Therefore, this paper studied the mechanical properties and durability of recycled aggregate permeable concrete. At first, a few properties of the target material, including bulk density, moisture content, water absorption, compressive strength, and water permeability coefficient, were tested respectively. Then, based on the orthogonal test ...

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Mechanical and Durability Properties of Concrete Containing Recycled

Jun 27, 2021  This study examines the mechanical and durability properties of five different concrete mixes using the construction and demolition waste as partial replacement of coarse aggregate. In the concrete mixes, a constant water–cement (w/c) ratio of 0.43 was used. In contrast, the natural coarse aggregates were replaced by recycled coarse aggregate using

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Preparation and performance analysis of recycled PET fiber

2 天前  Alrshoudi et al. [28,29] showed that utilization of waste PP fibers improved the compressive strength and durability of concrete, and significantly reduced the dry shrinkage and creep of concrete. Won et al. [ 30 ] found that recycled PET fiber reinforced cement composites have excellent durability.

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Performance Evolution of Recycled Aggregate Concrete under

The high porosity of recycled coarse aggregate, which results in recycled aggregate concrete (RAC) more vulnerable to freeze–thaw (FT) damage and chemical attack, is a dominant factor that limits the industrialization of recycled aggregate concrete in civil engineering. This paper presents an experimental study on the combined effects of FT damage and sulfate attack on

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Mechanical and Durability Properties of Recycled Aggregate Concrete

Water was added until the aggregate surface was totally covered [17 17 FERREIRA, L., BRITO, J., BARRA, M., “Influence of the pré-saturation of recycled coarse concrete aggregates on the mechanical strength and durability of structural concrete”, Magazine of Concrete Research, v.42, pp. 617-627, Aug. 2011. 10.1680/macr.2011.63.8.617

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Experimental Study of Mechanical Properties and Durability of

Jul 02, 2022  Request PDF Experimental Study of Mechanical Properties and Durability of Green Concrete Containing Slag, Waste Rubber Powder and Recycled Aggregate with Artificial Neural Network In this ...

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Publication year rev: 7978-2022 / Subject: water uptake and

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Fresh and Hardened Properties of Self-Compacting Concrete

Jul 07, 2022  Recycling trash and protecting natural resources are two of the many benefits of using copper slag as a fine aggregate in a concrete building. However, stakeholders need proven research output to build trust and initiate or enhance the use of such industrial waste in buildings. This study evaluated self-compacting concrete’s fresh and hardened characteristics

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