effect of recycled coarse aggregate on concrete

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Effect of Recycled Coarse Aggregate on Concrete

6. The percentage from Recycled coarse Aggregate that can be used in concrete is maximum 35% replacement of Recycled coarse Aggregate. References: Anonymous. 2008. Use of Recycled Aggregate in Construction. Cement Concrete and Aggregate Australia. Akbari, Y.V., Arora, N.K., Vakil, M.D. 2011. Effect on Recycled Aggregate on Concrete Properties.

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Effect of recycled coarse aggregate on concrete ...

高达12%返现  Jun 22, 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

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Study on the Effect of Recycled Coarse Aggregate on the ...

Nov 29, 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

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(PDF) Effect of recycled coarse aggregate on damage of ...

The surface of recycled coarse aggregate is generally full of pores, presenting high water absorption, which affects the interfacial transition zone (ITZ) property in concrete, leading to negative ...

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Effect of recycled coarse aggregate on the new interfacial ...

Nov 30, 2018  Due to its high water absorption, recycled aggregate (RA) disrupts the microstructure of concrete, mainly within the interfacial transition zone (ITZ). The objective of the present study is to examine the effect of Recycled Coarse Aggregate (RCA) on the microstructure of the ITZ of three different strength classes of concrete (C25, C35 and C45 ...

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Effect of recycled coarse aggregate on physical and ...

Oct 16, 2020  In this paper, the effect of using recycled coarse aggregate (RCA) on the behavior of concrete is experimentally studied. The RCA is prepared by crushing and sieving of waste of standard compression test cubes having a compressive strength ranging between 25 MPa and 30 MPa.

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Effect of carbonated coarse recycled concrete aggregate

Oct 01, 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 ...

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Effects of Replacement Ratio of Recycled Coarse

Abstract: By using three different quality recycled coarse aggregates,this paper presents the effects of the replacement ratio of recycled coarse aggregate on the properties of work,mechanics and drying shrinkage of concrete.The results show that if the recycled coarse aggregate is used to replace gravel,the high-quality recycled coarse aggregate can improve the properties of gravel concrete ...

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Effect of recycled coarse aggregate on concrete ...

Jun 22, 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

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(PDF) Effect of recycled coarse aggregate on damage of ...

The surface of recycled coarse aggregate is generally full of pores, presenting high water absorption, which affects the interfacial transition zone (ITZ) property in concrete, leading to negative ...

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Study on the Effect of Recycled Coarse Aggregate on the ...

Nov 29, 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

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The Effect of Fine and Coarse Recycled Aggregates on Fresh ...

In the present study, the effects of recycled concrete aggregates as a partial replacement for fine (by 50%) and coarse aggregates (by 100%) were examined in the self-compacting concrete mixtures which contain air-entraining agents and silica fumes. Two series of

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Effect of recycled concrete aggregates on strength and ...

Three types of fine aggregates, three types of natural coarse aggregates, and seven types of RCA were used in the concrete mixtures (Table 2). The specific gravity and water absorption were measured based on ASTM C12828 and C12728 for fine and coarse aggregates, respectively. FA1, NA-CL1-I, and NA-

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Effects of Replacement Ratio of Recycled Coarse Aggregate ...

Abstract: By using three different quality recycled coarse aggregates,this paper presents the effects of the replacement ratio of recycled coarse aggregate on the properties of work,mechanics and drying shrinkage of concrete.The results show that if the recycled coarse aggregate is used to replace gravel,the high-quality recycled coarse aggregate can improve the properties of gravel concrete ...

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Effect of Recycled Plastic Aggregates on Concrete

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

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Effects of Recycled Aggregate on Concrete Mix and Exposure ...

Jun 25, 2019  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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[PDF] Effect of Surface Modifications of Recycled Concrete ...

Dec 26, 2017  The experiment aims to test the specific way of producing concrete with recycled concrete aggregate (RCA). To reduce its negative impact on the concrete properties, two different ways of treatment of the RCA with geopolymer slurry were applied—coating during the mixing using the specific mixing approach and coating prior to the mixing of concrete.

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Effect of Recycled Coarse Aggregate and Bagasse Ash on Two ...

Numerous research studies have been conducted to improve the weak properties of recycled aggregate as a construction material over the last few decades. In two-stage concrete (TSC), coarse aggregates are placed in formwork, and then grout is injected with high pressure to fill up the voids between the coarse aggregates. In this experimental research, TSC was made with 100% recycled coarse ...

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Recycled Aggregate Concrete: Applications, Advantages ...

Recycled Aggregate can be used in the following constructions. Can be used for constructing gutters, pavements etc. Large pieces of crushed aggregate can be used for building revetments which in turn is very useful in controlling soil erosion. Recycled concrete rubbles can be used as coarse aggregate in

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(PDF) Valorization of Recycled Aggregate in Concrete and ...

Even though the construction sector important since the demand for natural is familiar with the use of coarse recycled resources and the amount of construction and concrete aggregates, the recycled fine demolition waste have greatly increased, concrete are classified as less noble resources. exerting huge pressure on the environment Several ...

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EFFECT OF FLY ASH ON THE STRENGTH OF CONCRETE MADE

Sep 30, 2014  Concrete made from 100% recycled coarse aggregate by pulsed power discharge can reach similar compressive strength to natural coarse aggregate concrete. The use of JIS type II fly ash as cement replacement of 25% and 50% mass without adjustment of water to cement ratio can reduce the compressive strength of concrete.

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Use Of Recycled Aggregate In Concrete – IJERT

Jan 30, 2013  Concrete with more than 50% of recycled coarse aggregate has significantly more shrinkage compared to concrete with natural aggregate. Increased shrinkage is a result of the attached mortar and cement paste in the recycled aggregate grains.

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Effect of Recycled Coarse Aggregate Type on Concrete ...

May 13, 2014  The types of aggregate used represent the three main constituents within recycled aggregates: unbound stone, crushed concrete, and crushed brick. Tests for mechanical properties of different types of recycled aggregate included crushing value and abrasion resistance.

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Effect of Recycled Coarse Aggregates in Properties of Concrete

[25] in Effect of recycled coarse aggregates in properties of concrete investigate the properties of concrete containing coarse recycled aggregates. Laboratory trials were conducted to investigate ...

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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 ...

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Effect of Recycled Coarse Aggregate and Bagasse Ash on Two ...

Numerous research studies have been conducted to improve the weak properties of recycled aggregate as a construction material over the last few decades. In two-stage concrete (TSC), coarse aggregates are placed in formwork, and then grout is injected with high pressure to fill up the voids between the coarse aggregates. In this experimental research, TSC was made with 100% recycled coarse ...

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Effect of recycled concrete aggregates on strength and ...

Three types of fine aggregates, three types of natural coarse aggregates, and seven types of RCA were used in the concrete mixtures (Table 2). The specific gravity and water absorption were measured based on ASTM C12828 and C12728 for fine and coarse aggregates, respectively. FA1, NA-CL1-I, and NA-

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Effect of Recycled Plastic Aggregates on Concrete

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

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The combined effect of using recycled coarse aggregate and ...

Jul 27, 2019  The reuse of materials from destroyed structures as recycled aggregate for concrete has become an important issue, especially in Iraq’s Mosul City following the war of 2017. Many water types which are unacceptable for drinking, such as the well water available in Mosul, may be used in concrete, avoiding the need to use precious potable water. In this study, the effects of non-potable well ...

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Effects of Replacement Ratio of Recycled Coarse Aggregate ...

Abstract: By using three different quality recycled coarse aggregates,this paper presents the effects of the replacement ratio of recycled coarse aggregate on the properties of work,mechanics and drying shrinkage of concrete.The results show that if the recycled coarse aggregate is used to replace gravel,the high-quality recycled coarse aggregate can improve the properties of gravel concrete ...

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(PDF) Effect of Recycled Polystyrene Polymer in Concrete ...

Nov 04, 2017  Effect of Recycled Polystyrene Polymer in Concrete as a Coarse Aggregate. ... The conventional coarse aggregate in concrete was replaced with 0%, 5%, 10%, 15%, 20%, 30%, and 40% (by volume) of EPS ...

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[PDF] Effect of Surface Modifications of Recycled Concrete ...

Dec 26, 2017  The experiment aims to test the specific way of producing concrete with recycled concrete aggregate (RCA). To reduce its negative impact on the concrete properties, two different ways of treatment of the RCA with geopolymer slurry were applied—coating during the mixing using the specific mixing approach and coating prior to the mixing of concrete.

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Effect on recycled aggregate on concrete properties ...

The significance of silica fume (SF) in concrete mix will improve the quality of recycled aggregates in concrete. The Portland cement was replaced with Silica Fume at 0%, 5% and 10%. The coarse ...

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Use Of Recycled Aggregate In Concrete – IJERT

Jan 30, 2013  Concrete with more than 50% of recycled coarse aggregate has significantly more shrinkage compared to concrete with natural aggregate. Increased shrinkage is a result of the attached mortar and cement paste in the recycled aggregate grains.

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(PDF) Valorization of Recycled Aggregate in Concrete and ...

Even though the construction sector important since the demand for natural is familiar with the use of coarse recycled resources and the amount of construction and concrete aggregates, the recycled fine demolition waste have greatly increased, concrete are classified as less noble resources. exerting huge pressure on the environment Several ...

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EFFECT OF FLY ASH ON THE STRENGTH OF CONCRETE MADE

Sep 30, 2014  Concrete made from 100% recycled coarse aggregate by pulsed power discharge can reach similar compressive strength to natural coarse aggregate concrete. The use of JIS type II fly ash as cement replacement of 25% and 50% mass without adjustment of water to cement ratio can reduce the compressive strength of concrete.

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