Effect of recycled concrete aggregates on strength and
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Effect of recycled concrete aggregates on strength and.

Effect of recycled concrete aggregates on strength and ...

For RCA to be a viable replacement option in the precast concrete industry, it is necessary that the recycled material not significantly affect the rapid strength gain needed for the daily casting schedule (that is, 1-day strength gain).

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Effect of recycled concrete aggregates on strength and ...

The use of RCA did not have a significant effect on the rate of concrete compressive strength or stiffness gain. Furthermore, RCA resulted in an effect (decrease or increase) in the strand bond strength that was consistent with the effect of RCA on the concrete compressive strength.

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The effect of recycled concrete aggregate properties on ...

Oct 01, 2011  The strength-based mixtures were developed for two reasons: (1) to determine whether RCA mix proportions could be developed to obtain similar compressive strength and workability to that of natural aggregate concrete and (2), to determine the effect that natural aggregate replacement with RCA has on splitting tensile and bond strength.

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Effect of Using Recycled Concrete as Coarse Aggregate on ...

There is slight decrease in tensile strength of concrete assessed with the help of split cylinder test. The decrease in tensile strength progressively increased by the increase in recycled coarse aggregate percentage. However, it has been observed that there may be 30% reduction in tensile strength, even if we utilization 100% recycled coarse aggregates in concrete.

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Size Effect on Recycled Concrete Strength and Its ...

Barhmaiah et al. [ 1] investigated the effect of recycled aggregate on strength of concrete and the results were compared with virgin aggregate concrete. Wu and Jin [ 2] studied the compressive fatigue behavior of compound concrete containing demolished concrete lumps and recycled aggregate concrete.

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Strength and Durability Evaluation of Recycled Aggregate ...

May 14, 2015  Utilizing recycled aggregate is certainly an important step towards sustainable development in the concrete industry and management of construction waste. Recycled aggregate (RA) is a viable alternative to natural aggregate, which helps in the preservation of the environment.

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Effect of recycled coarse aggregate on concrete ...

10%  Jun 22, 2011  Results of 28-d test show that the strength of different types of recycled aggregate affects the concrete strength obviously. The coarse aggregate added to mortar matrix plays a skeleton role and improves its compressive strength.

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Effect of binder content and recycled concrete aggregate ...

Effects of the addition of silica fume and rubber particles on the compressive behaviour of recycled aggregate concrete with steel fibres J. Cleaner Prod. , 197 ( 2018 ) , pp. 656 - 667 , 10.1016/j.jclepro.2018.06.237

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Strength and Durability Properties of Treated Recycled ...

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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Effect of Recycled Concrete Aggregates on Compressive ...

recycled concrete aggregates. The outcome of the study revealed that aggregate size strongly impacted the compressive strength and aggregate size ranging from range of 9.5 to 16 mm diameter is the best for the water-permeable concrete from compressive strength

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Effect of Mixed Recycled Aggregate on the Mechanical ...

Mixed recycled aggregate (MRA) is a kind of recycled aggregate containing discarded bricks and other impurities that is inferior to ordinary recycled concrete aggregate. To study the effect of MRA in concrete, specimens with 100% MRA under different water-cement ratios (W/C) of 0.50, 0.42, 0.36 and

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Strength and Durability Evaluation of Recycled Aggregate ...

May 14, 2015  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 durability of concrete.

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Strength and Durability Properties of Treated Recycled ...

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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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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Effects of Recycled Concrete Aggregates on the Compressive ...

Apr 04, 2012  The effectiveness of internal curing of high-strength self-consolidating concrete (SCC) using saturated recycled-concrete aggregates is examined in this study. Tests were performed on SCC using natural rock aggregate (NR-SCC) and recycled-concrete aggregate (RC-SCC). Fresh concrete tests included slump-flow, slump-flow with a J-ring, and L-box ...

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Effect of binder content and recycled concrete aggregate ...

Effects of the addition of silica fume and rubber particles on the compressive behaviour of recycled aggregate concrete with steel fibres J. Cleaner Prod. , 197 ( 2018 ) , pp. 656 - 667 , 10.1016/j.jclepro.2018.06.237

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Effect of fibres on the strength and toughness ...

Sep 02, 2020  The hardened properties of the recycled aggregate concrete (RAC) were lower compared to conventional concrete, this may attributed to the presence of old mortar on RA. Even though the compressive strength of RAC improved only marginally with addition of SF, the flexural strength and split tensile strength increased by 35–44% 43–52% ...

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Evaluation of coarse recycled concrete aggregates effect ...

May 10, 2021  Although the total replacement of natural aggregates by recycled concrete aggregates has a negative impact on the flexural strength, the replacement rates of 20%, 40 and 60% seem to have a positive impact on this property where there is a gain in tensile strength which can reach 8% for a substitution rate of 60%.

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Durability Performance of SCC and SCGC Containing Recycled ...

21 小时前  This study assesses the behaviour of self-compacting geopolymer concrete (SCGC) with and without recycled concrete aggregates (RCA) by studying the rheological, mechanical and durability properties and comparison with self-compacting concrete (SCC). The idea of using RCA in geopolymer is to attain sustainable development goals, i.e., with less carbon footprint and the use of waste materials ...

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EFFECTS OF AGGREGATE TYPE, SIZE, AND CONTENT ON

basalt or crushed limestone, aggregate sizes of 12 mm ('h in.) or 19 mm (:Y. in.), and ... aggregate size. High-strength concrete containing basalt and normal-strength concrete ... while in normal-strength concretes, coarse aggregate strength has little effect on compressive strength. Other research has compared the effects of

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Fresh and hardened properties of self-compacting concrete ...

Jul 13, 2021  Clay brick is one of the major components of demolition waste, which is generally landfilled. Effective and new uses of recycled clay brick may provide sustainability benefits in terms of landfill reduction. Therefore, this research aims at applying Recycled fine clay brick aggregates (RFCBA) with sizes from 0.075 mm–4.75 mm to prepare Self-compacting concrete (SCC). The effects

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Materials Free Full-Text Internal Curing Effect and ...

In order to investigate the internal curing effect of recycled brick aggregate (RBA) in recycled aggregate concrete (RAC) and calculate its contribution to the final compressive strength, two RAC groups with different recycled aggregates and 6 replacement ratios (r) under 4 curing ages were tested. Results show that the compressive strengths of RACI and RACII decrease steadily with the ...

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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 self-compacting concrete

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Effect of Recycled Concrete Aggregates on Compressive ...

recycled concrete aggregates. The outcome of the study revealed that aggregate size strongly impacted the compressive strength and aggregate size ranging from range of 9.5 to 16 mm diameter is the best for the water-permeable concrete from compressive strength

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Effect of fine recycled aggregate on the strength and ...

May 19, 2021  To overcome the scarcity of river sand and dumping of construction and demolition wastes, the fine recycled aggregate (FRA) collected from CD wastes is being utilized as a replacement to river sand. Many earlier studies reported that the higher water absorption of fine recycled aggregate and weak interfacial transition zone (ITZ) resulted in the development of the concrete with less strength ...

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Effects of Recycled Concrete Aggregates on the Compressive ...

Apr 04, 2012  The effectiveness of internal curing of high-strength self-consolidating concrete (SCC) using saturated recycled-concrete aggregates is examined in this study. Tests were performed on SCC using natural rock aggregate (NR-SCC) and recycled-concrete aggregate (RC-SCC). Fresh concrete tests included slump-flow, slump-flow with a J-ring, and L-box ...

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Effect of Recycled Aggregate on Compressive Strength of ...

Nov 11, 2014  The results shows that replacement of 25-30 percent of recycled aggregate in place of fresh concrete does not have much effect on properties of concrete. Fresh properties were studied by slump test and compaction factor test. Mechanical properties studied are compressive strength and flexural strength and tensile strength.

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Effect of Recycled Aggregate on Compressive Strength of ...

was no effect with the replacement of 30% coarse recycled concrete aggregate used on the ceiling strength of concrete. [3] The main aim that testing the recycled aggregate is to find out the result of the strength characteristic on it and analysis whether recycled aggregate is suitable to apply in the construction area.

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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 test show that the strength ...

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(PDF) Effect of Aggregate Type and Specimen Configuration ...

In this paper, concrete mixes utilizing two sizes of natural aggregate and two sources of lightweight and recycled aggregates were used to investigate the effect of aggregate type and specimen size and shape on the compressive strength of concrete.

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Effect of binder content and recycled concrete aggregate ...

Effects of the addition of silica fume and rubber particles on the compressive behaviour of recycled aggregate concrete with steel fibres J. Cleaner Prod. , 197 ( 2018 ) , pp. 656 - 667 , 10.1016/j.jclepro.2018.06.237

Get Price

EFFECTS OF AGGREGATE TYPE, SIZE, AND CONTENT ON

basalt or crushed limestone, aggregate sizes of 12 mm ('h in.) or 19 mm (:Y. in.), and ... aggregate size. High-strength concrete containing basalt and normal-strength concrete ... while in normal-strength concretes, coarse aggregate strength has little effect on compressive strength. Other research has compared the effects of

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(PDF) Effect on strength of concrete by partial ...

For replacement of natural aggregates by recycled 4 aggregates up to 35%, the effects are marginal; indicating M30 2 that recycled aggregate from field demolished concrete M35 can be blended with natural aggregates up to 35% without 0 any modification in the mix design for M30 and M35 20% 35% 50% 100% 0% grade concrete applications.

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Strength and Durability Properties of Treated Recycled ...

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.

Get Price

EFFECTS OF RECYCLED AGGREGATES ON CONCRETE

CHAPTER 4 PROPERTIES OF RECYCLED AGGREGATES CONCRETE 4.1 Properties of Fresh Recycled Aggregates Concrete 96 4.1.1 Workability of fresh recycled aggregate concrete 96 4.2 Properties of Hardened Recycled Aggregates Concrete 98 4.2.1 Compressive Strength 98 4.2.1.1 Effect of Replacement Percentage 98

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Experimental Study of Compressive Strength of Recycled ...

Apr 25, 2014  The use of recycled aggregates in concrete results in significant economical and environmental benefits. In the present work, attempts have been made to assess the effect of recycled concrete aggregate on the strength of ordinary concrete.

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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 self-compacting concrete

Get Price
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