### Effect of Recycled Coarse Aggregate on Concrete

Coarse recycled concrete aggregate (RCA) is produced by crushing the demolition waste of at least 95% by weight of concrete, and having a total contaminant level typically lower than 1% of the bulk mass. Other materials that may be present in RCA are gravel, crushed stone, hydraulic-cement concrete or a combination thereof deemed suitable for premix concrete production (Anonymous, 2008 ...

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13/05/2014 Effect of Recycled Coarse Aggregate Type on Concrete ... Using multilinear correlation analysis, the influences of these aggregate characteristics and other parameters on the properties of recycled aggregate concrete were evaluated. The results showed that the performance of the concrete containing each type of RA was largely influenced by the aggregate nature and quality, in addition to ...

Get price### Effect on recycled aggregate on concrete properties ...

Akbari, Arora Vakil [9] studied the effect on recycled aggregate on concrete properties. Three different water ratios 0.60, 0.52 and 0.43 and aggregate replacement of 0%, 15%, 30%, 50% were ...

Get price### Effect of recycled coarse aggregate on concrete ...

22/06/2011 The effect of recycled coarse aggregate on concrete compressive strength was investigated based on the concrete skeleton theory. For this purpose, 30 mix proportions of concrete with target cube compressive strength ranging from 20 to 60 MPa were cast with normal coarse aggregate and recycled coarse aggregate from different strength parent concretes. Results of 28-d

Get price### The effect of recycled concrete aggregate properties on ...

01/10/2011 The purpose of this study was to investigate the influence that replacing natural coarse aggregate with recycled concrete aggregate (RCA) has on concrete bond strength with reinforcing steel. Two sources of RCA were used along with one natural aggregate source. Numerous aggregate properties were measured for all aggregate sources. Two types of concrete mixture proportions

Get price### Effect of carbonated coarse recycled concrete aggregate

01/10/2019 The effects of carbonated coarse recycled concrete aggregate (RCA) on properties and microstructure of recycled aggregate concrete (RAC) were investigated in this study. The water absorption of 5–10 mm and 10–20 mm coarse RCA was reduced by 30% and 22%, and their corresponding apparent density increased by 4.8% and 3.2% after carbonation treatment. The

Get price### Effect of Recycled Coarse Aggregate Type on Concrete ...

13/05/2014 Effect of Recycled Coarse Aggregate Type on Concrete ... Using multilinear correlation analysis, the influences of these aggregate characteristics and other parameters on the properties of recycled aggregate concrete were evaluated. The results showed that the performance of the concrete containing each type of RA was largely influenced by the aggregate nature and quality, in addition to ...

Get price### Effect of recycled coarse aggregate on the properties of ...

27/11/2019 The effect of recycled coarse aggregate (RCA) on the fresh and hardened properties of C40 self-compacting concrete (SCC) was investigated in this paper. The slump, T 500 (the time needed for SCC to spread into a round configuration with a nominal diameter of 500 mm), the slump flow and the flow time of fresh C40 SCC as well as the compressive strength and modulus of elasticity of

Get price### Volume 28: 1–7 Effect of recycled coarse aggregate ª The ...

Effect of recycled coarse aggregate on the properties of C40 self-compacting concrete Yunyang Wang1,2, Bingchen Zhao1, Guang Yang1, Yandong Jia3, Lijun Yang1, Meng Li1, Xiangliang Tang1, Zhigang Huang1, Jin Sun1 and Weimin Shen1 Abstract The effect of recycled coarse aggregate (RCA) on the fresh and hardened properties of C40 self-compacting concrete (SCC) was investigated in

Get price### Effect of carbonated coarse recycled concrete aggregate on ...

01/10/2019 The effects of carbonated coarse recycled concrete aggregate (RCA) on properties and microstructure of recycled aggregate concrete (RAC) were investigated in this study. The water absorption of 5–10 mm and 10–20 mm coarse RCA was reduced by 30% and 22%, and their corresponding apparent density increased by 4.8% and 3.2% after carbonation treatment. The

Get price### Effect of recycled coarse aggregate and foundry sand on ...

In this paper, the possibility of utilising foundry sand and recycled coarse aggregate (RCA) obtained from a ready-mix concrete plant for making self-compacting concrete (SCC) was evaluated. In this experiment, 25 concrete mixes were made in which the substitution of RCA was 0, 25, 50, 75 and 100% as coarse aggregate and substitution of foundry sand was 0, 10, 15, 20 and 25% as fine aggregate ...

Get price### Effect of recycled coarse aggregate on damage of recycled ...

03/04/2011 The type of aggregate has an important effect on the properties of this zone. The weakness of this zone is mainly due to the initial microcracks and to the high stress concentrations around the transition zone which are caused by the difference in the modulus of elasticity and in the shrinkage of the aggregate and the matrix materials. The main difference between conventional

Get price### (PDF) Effect of Recycled Concrete Aggregate Properties on ...

However, very few studies have investigated the effect of using 100% RCA as coarse aggregate on the mechanical properties of a concrete that has been proportioned to achieve similar compressive ...

Get price### Effect of Using Recycled Concrete as Coarse Aggregate on ...

recycled coarse aggregates, strength properties of concrete are decreased to some extent. The basic aim of this research was to investigate the effect of using recycled concrete pieces as coarse aggregate on flexural and tensile strength of concrete. The investigation was carried out by carrying

Get price### Effects of coral, recycled and natural coarse aggregates ...

20/12/2018 However, a few of recycled coarse aggregates were broken (Fig. 5(c)). That indicated that the failure of concrete was obviously influenced by coarse aggregate type. This phenomenon can be explained as the difference between mechanical properties of recycled coarse aggregate and those of natural coarse aggregate. 3.2. Elastic modulus

Get price### Performance of Recycled Coarse Aggregate Concrete with ...

11/10/2019 In the present study, the effect of nylon fiber (NF) on the permeability as well as the mechanical properties of concrete incorporating 100% recycled coarse aggregate (RA) was experimentally investigated. Concrete was produced by adding 0, 0.6 and 1.2 kg/m 3 of NF and then cured in water for the pre-determined period.

Get price### Effect of Recycled Coarse Aggregate Type on Concrete ...

13/05/2014 Effect of Recycled Coarse Aggregate Type on Concrete ... Using multilinear correlation analysis, the influences of these aggregate characteristics and other parameters on the properties of recycled aggregate concrete were evaluated. The results showed that the performance of the concrete containing each type of RA was largely influenced by the aggregate nature and quality, in addition to ...

Get price### EFFECT OF RECYCLED COARSE AGGREGATE ON CONCRETE PROPERTIES

EFFECT OF RECYCLED COARSE AGGREGATE ON CONCRETE PROPERTIES Thesis Arranged By: FATHEI RAMADAN SALEH LAMEIN S100130012 POST GRADUATE PROGRAM MASTER PROGRAM IN CIVIL ENGINEERING MUHAMMADIYAH UNIVERSITY SURAKARTA 2015 . ii EFFECT OF RECYCLED COARSE AGGREGATE ON CONCRETE PROPERTIES Arranged By: FATHEI

Get price### Effect of recycled coarse aggregate on the properties of ...

27/11/2019 The effect of recycled coarse aggregate (RCA) on the fresh and hardened properties of C40 self-compacting concrete (SCC) was investigated in this paper. The slump, T 500 (the time needed for SCC to spread into a round configuration with a nominal diameter of 500 mm), the slump flow and the flow time of fresh C40 SCC as well as the compressive strength and modulus of elasticity of

Get price### Effect of Recycled Coarse Aggregates in Properties of ...

01/11/2008 The coarse aggregate in concrete was replaced with 0%, 20%, 40%, 60%, 80% and 100% recycled coarse aggregates. The test results indicated that the replacement of natural coarse aggregates by recycled aggregates up to 40% had little effect on the compressive strength, but higher levels of replacement reduced the compressive strength. A replacement level of 100% causes a

Get price### Volume 28: 1–7 Effect of recycled coarse aggregate ª The ...

Effect of recycled coarse aggregate on the properties of C40 self-compacting concrete Yunyang Wang1,2, Bingchen Zhao1, Guang Yang1, Yandong Jia3, Lijun Yang1, Meng Li1, Xiangliang Tang1, Zhigang Huang1, Jin Sun1 and Weimin Shen1 Abstract The effect of recycled coarse aggregate (RCA) on the fresh and hardened properties of C40 self-compacting concrete (SCC) was investigated in

Get price### Study on the Effect of Recycled Coarse Aggregate on the ...

29/11/2021 Shrinkage property is a significant indicator of the durability of concrete, and the shrinkage of green recycled concrete is particularly problematic. In this paper, construction waste was crushed and screened to generate simple-crushed recycled coarse aggregate (SCRCA). The SCRCA was then subjected to particle shaping to create primary particle-shaped recycled coarse aggregate (PPRCA).

Get price### Effect of recycled coarse aggregates enhanced by CO2 on ...

Based on the optimum carbonation scheme, the influence of recycled coarse aggregate on mechanical properties of recycled aggregate concrete was studied with the substitution rate of recycled coarse aggregate (30%, 50%, 70% and 100%) before and after carbonization respectively.

Get price### Effect of recycled coarse aggregate on damage of recycled ...

03/04/2011 The type of aggregate has an important effect on the properties of this zone. The weakness of this zone is mainly due to the initial microcracks and to the high stress concentrations around the transition zone which are caused by the difference in the modulus of elasticity and in the shrinkage of the aggregate and the matrix materials. The main difference between conventional

Get price### Effect of Using Recycled Concrete as Coarse Aggregate on ...

recycled coarse aggregates, strength properties of concrete are decreased to some extent. The basic aim of this research was to investigate the effect of using recycled concrete pieces as coarse aggregate on flexural and tensile strength of concrete. The investigation was carried out by carrying

Get price### Effect of Recycled Plastic Aggregates on Concrete

Effect of Recycled Plastic Aggregates on Concrete Parvesh Kumar1, Gaurav Kumar2 1M.Tech. student, ... the use or recycled plastics as replacement of coarse aggregates in concrete. The main aim of the study is to investigate the change in mechanical properties of concrete with the addition of plastics in concrete. Along with the mechanical properties, thermal characteristics of the resultant ...

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