effects of recycled aggregates on concrete properties

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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 ...

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Effects of recycled concrete aggregates on properties of ...

Jul 01, 2006  Effects of using recycled concrete aggregates on the engineering properties of concrete Programme and Proceedings of the use of recycled materials in engineering constructions , The Institute of Engineers, Australia, 30–31 May ( 1996 ) , pp. 147 - 152

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(PDF) Effects of the fine recycled concrete aggregates on ...

May 18, 2011  In this experimental study, the effects of the recycled fine recycled concrete aggregate (FRA) that was manufactured from concrete wastes on

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Effects of recycled fine aggregates on properties of ...

Influence of amount of recycled coarse aggregates and production process on properties of recycled aggregate concrete Cement Concr. Res. , 37 ( 2007 ) , pp. 735 - 742 , 10.1016/j.cemconres.2007.02.002

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(PDF) The Effects of Recycled Aggregates on Compressive ...

Jan 01, 2017  Mechanical properties of demolishing waste [4], compressive strength [5], effect of fly ash [18], effect of cement proportion [21], effect of recycled aggregates on

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Impact Properties of Recycled Aggregate Concrete with ...

Sep 02, 2020  Conclusion. (1) The combination of nanosilica solution concentration 2% and soaking time, 48 h, has better modification effect on the mechanical properties of recycled aggregates. Its apparent density increased by 1.6%, and crush index and

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Effects of recycled concrete aggregate on the fresh ...

Jan 01, 2011  The basic physical properties of the aggregates are shown in Table 1.The gradation curves of the aggregates are presented in Figure 1.The size distributions of FA, NCA, and RCA were within the ASTM limits, as shown in Figure 1.RCA was more angular than NCA and therefore possessed a higher angularity number ().In addition, RCA had porous surfaces consisting of reclaimed mortar

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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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Mix Design and Recycled Aggregates Effects on the

高达12%返现  Jun 29, 2017  Butler L, West JS, Tighe SL (2011) The effect of recycled concrete aggregate properties on the bond strength between RCA concrete and steel reinforcement. Cem Concr Res 41(10):1037–1049. Article Google Scholar 50.

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LABORATORY EVALUATION OF RECYCLED CONCRETE AS

Recycled concrete, aggregate properties, PCCP No restrictions. 19. Security Classification (of this report) 20. Security Classification (of this page) ... Three tests were used to determine if RCA had any effects on the properties of fresh concrete including slump, air content by the pressure method, and density. Slump and air content

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Effects of Recycled Aggregates on Concrete Properties ...

However, for concrete properties of Grade 60 and Grade 80 it was generally observed that the higher replacement % of recycled aggregates lowered the strength of recycled aggregates concrete. Besides, effects of two RCA parameters (i.e. particle density and Los Angeles abrasion) have significant effects on the strength.

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(PDF) The Effect of Recycled Aggregate Quality on Concrete ...

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 ON ...

Jul 14, 2020  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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Effect of Recycled Coarse Aggregate on Concrete Properties ...

Properties of Concrete Incorporating Recycled Concrete Aggregates. Proceedings of the NationalSymposium on the Use of Recycled Materials in Engineering Construction. Sydney. Tam, Gao and Tam. 2006. Comparing performance of modified two-stage mixing approach for producing recycled aggregate concrete.Magazine of Concrete Research, 58(7):477–484 ...

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Impact Properties of Recycled Aggregate Concrete with ...

Sep 02, 2020  Conclusion. (1) The combination of nanosilica solution concentration 2% and soaking time, 48 h, has better modification effect on the mechanical properties of recycled aggregates. Its apparent density increased by 1.6%, and crush index and

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An experimental study on the effect of recycled aggregate ...

In this experimental study, the effect of the recycled aggregate on interfacial property, permeability and strength characteristics of the concrete was evaluated in order to examine the ...

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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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Rheological Properties of Recycled Aggregate Concrete ...

Nov 01, 2021  The recycled aggregates were obtained from a local recycled aggregates plant in Abu Dhabi that extracts the aggregates from demolished buildings in Abu Dhabi. Two supplementary cementitious materials were used in binary and ternary blends—namely, ground-granulated blast-furnace slag and fly ash.

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(PDF) “Mechanical Properties of Concrete with Recycled ...

Sep 22, 2021  As a result, it was considered that the combination of 0.3% steel fiber and 20% recycled coarse aggregate in fly ash/slag-based geopolymer concrete leads to an eco-friendly concrete mix with ...

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Effect of Recycled PET (Polyethylene Terephthalate) on the ...

Nov 13, 2019  This research is focused on the use of recycled PET (Polyethylene terephthalate) as an aggregate to improve the electrochemical properties of reinforcing steel in concrete. Samples were made with different PET geometries such as: fibers (F), rectangles (R), and mixture of fiber and rectangle (F–R). The PET was added as a substitute for sand with a PET/sand ratio by volume percent of

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Effect of Recycled Aggregates on Previous Concrete Properties

Specific Water Aggregates gravity absorption (%) Natural aggregate 10 mm 2.78 1.02 Natural aggregate 20 mm 2.76 0.5 Recycled concrete aggregate 2.43 5.5 Ferrochrome 2.88 0.74 Shraded plastic 1.01 0.05 Rubber 1.05 0.4 Glass 2.51 0.13 Seashell 2.65 0.5 Immediately after concrete mixing, slump, density and voids content tests were conducted as per ...

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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 design properties of parent concrete on the ...

Feb 01, 2019  The effect of crushing of the recycled concrete aggregates of different parent concrete on the concrete mixtures properties has been studied by Marie, . Marie [16] studied the optimal allowable residual mortar content in recycled aggregates crushed from parent concrete implementing different waste materials that have acceptable reduction in its ...

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INVESTIGATION OF MECHANICAL PROPERTIES OF RECYCLED ...

Apr 27, 2018  Recycled concrete aggregates, Embedded energy, Cost of concrete materials, Saudi Arabia Abstract. This paper presents research results for evaluating effects of utilizing recycled concrete aggregates on the mechanical properties of concrete and its related production cost and embedded energy.

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EFFECT OF RECYCLED CONCRETE AGGREGATE QUALITY ON ...

Jul 14, 2020  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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Effect of fine recycled aggregate on the strength and ...

Effect of fine recycled aggregate on the strength and durability properties of concrete modified through two-stage mixing approach Environ Sci Pollut Res Int

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PROPERTIES OF RECYCLED AGGREGATE CONCRETE

the recycled aggregate comes from many different sources, the uneven quality, i.e. variations in the properties of recycled aggregate are much more pro-nounced than as is the case with natural aggregates. Figure 2. Appearance of the recycled aggregate grains [2] 2.1. Aggregate grading Grading of recycled coarse aggregate

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Influence of Recycled Aggregate on Concrete Properties ...

Jul 21, 2019  This video (Animation, Animated Video) explains the basic concept of recycled concrete aggregate, what are the uses of recycled concrete aggregate (crushed c...

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An experimental study on the effect of recycled aggregate ...

The effect of the recycled aggregate was evaluated using Vickers hardness test of aggregate interface, carbonation depth test, tensile strength test, and compressive strength test. The experimental results showed that the recycled aggregate has a significant effect on the overall properties of concrete.

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Effect of recycled coarse aggregate on physical and ...

Butler, L, West, JS, Tighe, S (2013) Effect of recycled concrete coarse aggregate from multiple sources on the hardened properties of concrete with equivalent compressive strength. Construction and Building Materials 47: 1292 – 1301. Google Scholar Crossref

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Rheological Properties of Recycled Aggregate Concrete ...

Nov 01, 2021  The recycled aggregates were obtained from a local recycled aggregates plant in Abu Dhabi that extracts the aggregates from demolished buildings in Abu Dhabi. Two supplementary cementitious materials were used in binary and ternary blends—namely, ground-granulated blast-furnace slag and fly ash.

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Effect of Surface Modifications of Recycled Concrete ...

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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The Effect of Aggregate Properties on Concrete

The Effect of Aggregate Properties on Concrete Concrete is a mixture of cementious material, aggregate, and water. Aggregate is commonly considered inert filler, which accounts for 60 to 80 percent of the volume and 70 to 85 percent of the weight of concrete.

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Effects of the Parent Concrete Properties and Crushing ...

Dec 12, 2013  The most important parameters associated with recycled concrete aggregate (RCA) production that may affect quality and yield include such properties of the parent concrete as the composition, strength and aggregate grading, type of crushers used, number of crushing stages, the size of the RCA particles, and the size reduction sequence.

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Effect of the Aggregate Size on Strength Properties of ...

Mar 20, 2018  The study on preparation technology of recycled concrete with economical and technical feasibility has gained more serious attention in each country due to its involvement and effect on the environment protection and the sustainable development of human society. In this study, we conducted a control variable test to investigate and assess the influence of the aggregate size on the strength ...

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INVESTIGATION OF MECHANICAL PROPERTIES OF RECYCLED ...

Apr 27, 2018  Recycled concrete aggregates, Embedded energy, Cost of concrete materials, Saudi Arabia Abstract. This paper presents research results for evaluating effects of utilizing recycled concrete aggregates on the mechanical properties of concrete and its related production cost and embedded energy.

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Effect of Admixed Recycled Aggregate Concrete on ...

Apr 04, 2012  All these mixes were designed for M25 grade of concrete. In the present work, a comparison was made between the results of a laboratory investigation on various physical properties of concrete made with recycled aggregate concrete with fresh aggregate concrete and found that the results are encouraging to use concrete with RA.

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

Apr 04, 2019  However, recycled concrete aggregates may adversely impact the mechanical properties of recycled aggregate concrete. It is evident that the reduction of compressive strength of RACs compensates by adjusting the water to cement ratio, changing the procedure of mixing, treating the aggregate, and using a mineral addition .

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