Properties of recycled aggregate concrete designed with

PROPERTIES OF RECYCLED AGGREGATE CONCRETE

It has been shown that the application of coarse recycled concrete aggregate, as the component materials in the concrete mixtures, it is possible to produce structural concrete that can be satisfactory and even with high quality, which primarily depends on the characteristics of crushed demolished concrete.

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PDF Mechanical and Durability Properties of Concrete Produced

The concrete mixture proportions were designed in accor - dance with IS 10262,20 with a common target slump of 70 ± 10 mm (2.75 ± 0.39 in.). A high-range water-reducing Fig. 1—Oven used for heating recycled concrete aggregate.

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Assessment of Recycled Aggregate Concrete

Keywords: Concrete, Recycled aggregate properties, Performance of recycled aggregate concrete 1. Introduction The applications of recycled aggregate in construction have started since end of World War II by demolished concrete pavement as recycled aggregate in stabilizing the base course for road construction (Olorusongo, F.T., 1999). The

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Evaluation of Recycled Concrete for Use as Aggregate in

This study evaluated the use of recycled concrete as coarse aggregate in new concrete pavements. Recycled concrete aggregate (RCA) produced from demolished pavements in three geographically-dispersed locations in Washington state were used to perform testson aggregate characte ristics, fresh concrete propertiesand hardened concrete properties.

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Aggregate in Concrete - The Concrete Network

Recycled concrete will have a higher absorption and lower specific gravity than conventional aggregates. To produce good quality, durable concrete containing a portion of recycled concrete aggregate often requires trial concrete mixes and close monitoring of the properties of the old recycled concrete, with mix adjustments made, as needed.

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Mechanical properties of recycled aggregate concrete

recycled coarse aggregate is greater than that of natural coarse aggregates. The difference is due to cement paste adhered to aggregate and other types of impurities in recycled aggregates. The properties of recycled coarse aggregate are presented in Table 2. While making RCA concrete, the

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PDF) Influence of the amount of recycled coarse aggregate

Comparisons of natural and recycled aggregate concretes prepared with the addition of different mineral admixtures By Francisco Agrela and Chi-sun Poon Durability-related performance of concrete containing fine recycled aggregates from crushed bricks and sanitary ware

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Mechanical Properties of Recycled Coarse Aggregate

recycled concrete aggregate, and crushed waste glass in concrete. The study showed that the GGBFS could be used up to 50% and recycled aggregate in concrete. Recycled aggregate replacement up to 50% enhanced the properties of concrete. Weerachart Tangchirapat et al. [4] studied fly ash's influence on

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Recycled Concrete Aggregates and Their Influences on

A comprehensive literature review of the fresh concrete properties produced with recycled aggregate has been carried out by Silva et al. [3] and also discussed in many other publications [4–7]. The e ects of variables such as the overall quality of recycled aggregates

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PDF Influence of Recycled Aggregates on Mechanical Properties

natural aggregates, affecting the mix design. The investigation of the mechanical properties of recycled aggregate concrete is necessary to determine the feasibility of use as well as the impact on durability of structures. There have been an increasing number of studies on the influence of recycled

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Recycling of Concrete (Recycling Coarse Aggregate) - IJERT

Recycling of concrete is a simple process. It involves breaking, removing, and crushing existing concrete into a material with a specified size and quality. As per study about 75 to 80% of total construction material consist coarse aggregate portion. When the structure is demolished, the waste concrete in a large quantity is produced.

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Influence of the amount of recycled coarse aggregate in

The mix design of the concrete was done according to the DoE method, which targeted a compressive strength of 25 MPa at the 28th day .The mixture compositions of all mixes are presented in Table 2.There are notably, five types of mixtures prepared by replacing the coarse aggregate with the RCA at 0%, 15%, 30%, 60% and 80% of the total coarse aggregate content.

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Experimental Research on the Physical and Mechanical

and mechanical properties of concrete, recycled plastic concrete with 0, 3%, 5% and 7% content (by weight) was designed. The compressive strength, splitting tensile strength and the change of mass caused by water absorption during curing were measured. The results show that the strength of concrete is increased by add-ing recycled plastic into

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Properties of Fibre Reinforced Concrete Using Recycled

Concrete is used more than any other man-made material in the world. Concrete like other engineering materials needs to be designed for properties like strength, durability and workability. Concrete mix design is the science of deciding relative proportions of ingredients of concrete, to achieve the desired properties of concrete.

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PDF Environmental Suitability of Recycled Concrete Aggregates

aggregate bases are used in the construction of highway base layers which cause an environmental problem and depletion of natural resources (Cetin et al. 2014). Large amounts of recycled concrete aggregates (RCAs) are generated every year from the demolition of State highway concrete structures annually and part of these concrete wastes are

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Mechanical Properties of Concrete with Recycled Concrete

Recycled concrete aggregate (RCA) collected from the demolition of old reinforced concrete structures can be reused to prepare structural and non-structural concrete, thereby protecting the environment by preserving natural resources. This study explores RCA’s use, collected from the crushed concrete of different building projects in Riyadh, to manufacture fresh self-compacting concrete (SCC

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Effect of Recycled Concrete Aggregate Properties on

This study focuses on characterizing several recycled concrete aggregate (RCA) sources, developing concrete mixture proportions that incorporate RCA as coarse aggregate, and investigating the effect of coarse aggregate properties on the main mixture proportion parameters [i.e., cement content, water demand, and water-cement (w/c) ratio].

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PDF Use of Contaminated Recycled Aggregates for Concrete

Replacement of natural aggregates by concrete road recycled aggregates in the mix design of concrete is a solution to decrease nature depletion. Natural concrete slabs were cured in water, sea water, chloride solutions or sulphate solutions and then crushed to obtain and contaminated (polluted) recycled aggregates.

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PDF Experimental Study on Properties of Pervious Concrete Made

variables in the aggregate on the properties of pervious concrete using recycled aggregate. Experimental Details Material Properties Typical pervious concrete mix components include cement, natural and recycled aggregate, water. The experiment used Type I Portland cement conforming to ASTM C150 in all mixes. The fineness of cement was 345 m2/kg.

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Properties of aggregates- Physical properties, Chemical

Aggregates can occupy up to 60%-75% volume of composite construction materials like concrete. Thus, their own properties have a significant impact on the overall properties of such composite materials. Now, let us discuss the Properties of aggregates. A) Physical properties of aggregates 1) Shape and size

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Effects of Aggregate Properties on Concrete - Size, Grading

Although aggregates are most commonly known to be inert filler in concrete, the effects of aggregate properties on Concrete impacts the strength, durability, workability, and economy of concrete. These different properties of aggregate allow designers and contractors the flexibility to meet their design and construction requirements as well as

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