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Testing of Strength of Recycled Waste Concrete and Its

The compressive strength of concretes was tested in laboratory after 3, 7, and 28 days. The specimens used for testing include cubes, cylinders, and flexural beams. The influence of admixtures on...

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Testing of Strength of Recycled Waste Concrete and Its

Jan 01, 2011  All mixes were designed for characteristic strength of M20. The compressive strength of concretes was tested in laboratory after 3, 7, and 28 days. The specimens used for testing include cubes, cylinders, and flexural beams. The influence of admixtures on the strength of waste concrete was examined.

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Testing of Strength of Recycled Waste Concrete and Its

This paper gives results of studies undertaken to assess suitability of construction demolition as coarse aggregate in new concrete production. Three sets of concrete materials considered are fresh concrete FCM, waste concrete WCM, and waste concrete strengthened with admixtures SWCM. Various mixes were prepared for carrying out the research by varying the proportions

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Testing of Strength of Recycled Waste Concrete and Its

This paper gives results of studies undertaken to assess suitability of construction demolition as coarse aggregate in new concrete production. Three sets of concrete materials considered are fresh concrete (FCM), waste concrete (WCM), and waste concrete strengthened with admixtures (SWCM). Various mixes were prepared for carrying out the research by varying the

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Strength and durability of concrete containing recycled

Sep 01, 2018  Recycled concrete aggregates (RCA) sourced from waste concrete are a sustainable alternative to natural crushed stone aggregates. The strength and durability properties of concrete containing RCA were evaluated by a comprehensive experimental investigation involving nine control mixes.

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Prediction of the Compressive Strength of Recycled

Jul 14, 2021  The traditional method of testing the compressive strength of concrete is to reserve a test specimen, which is complicated to carry out. To better detect the compressive strength of concrete, some scholars have studied prediction models for concrete compressive strength [21,22].

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Strength and Durability Evaluation of Recycled Aggregate

May 14, 2015  The main objectives of the experimental program were to (i) investigate variability of recycled aggregate properties and their impact on concrete production and (ii) evaluate properties of concrete prepared with 100 % recycled aggregate.

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Strength analysis and validation of recycled aggregate

Jan 01, 2021  The reduction strength values are 12.72%, 18.51%, 29.93% and 40.81% at the percentage of 25, 50, 75 and 100 respectively for the M-20 Grade of RA concrete. Similarly 10.45%, 16.35%, 27.08% and 41.20% strength reductions obtained at the percentage of 25, 50, 75 and 100 respectively for the M-30 Grade of RA concrete, as shown in Fig. 4 (b).

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Evaluation of Concrete Strength Made with Recycled

Mar 01, 2019  Concrete with 80% RA showed good workability and mechanical properties. The compressive strength of the concrete with 80% RA was 60 MPa at 28 days and 77 MPa at 56 days. Rapid chloride penetration...

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Strength and Durability Evaluation of Recycled Aggregate Concrete

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. In

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Experimental Study of Compressive Strength of Recycled Aggregate Concrete

Apr 25, 2014  From the table 6 and graph 1 it can be seen that, the compressive strength of M25 grade normal concrete at 28 days is 39.53 N/mm2. At the same time, the compressive strength at 20 % replacement is found to be 38.96 N/mm2. Also, there is sudden fall in strength at 40% and 60% replacement, as the quantity of RCA increases.

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Non-Destructive Testing of Recycled Aggregate

Jun 21, 2019  Materials. Three types of aggrega tes are used in this research’ s concrete compo sition s: sand 0 – 4 mm, limestone. 8– 20 mm and coarse RCAs 8 - 20 mm. O nly coarse r ecycled aggregates ...

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Design of Concrete Made with Recycled Brick Waste and Its

Apr 28, 2021  This paper details the research process of introducing concrete with recycled brick waste (RBW) up to the application output. The emphasis is placed on using a RBW brash as a partial replacement for natural aggregates and evaluating an RBW powder as a type II addition for use in concrete. ... Part 3: Compressive Strength of Test Specimens ...

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7 Methods for Testing Concrete Strength - For Construction Pros

Jun 11, 2019  A lab must be used to obtain strength data. 7. Wireless Maturity Sensors (ASTM C1074) Method: This technique is based on the principle that concrete strength is directly related to its hydration ...

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Flexural Testing of Reinforced Concrete Beams with Recycled Concrete ...

May 01, 2014  This is an inefficient method of recycling the concrete materials, under-utilizing an important and valuable asset. To promote the use of recycled concrete aggregates (RCAs), flexural tests of 28 reinforced high-strength and normal-strength concrete beams were performed. The main objectives of this research were the structural investigation of ...

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Recycled Concrete - an overview ScienceDirect Topics

Recycled concrete and masonry (RCM) aggregate can be described as graded aggregate produced from sorted and clean waste concrete and masonry. The RCM material may contain brick, gravel crush rock or other forms of stony materials as blended materials. Class 1B-RCA as per HB 155 (2002) is an RCM aggregate.

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Development Of High Strength Concrete From Recycled Aggregate Concrete

The tests were conducted by replacing the coarse aggregates in high strength concrete mixes. by 0, 10, 20, 30, and 40 of recycled coarse aggregates. I was able to obtain a high strength of 82N/mm2. at 0% RCA, 78N/mm2 at 10% RCA, 70N/mm2 at 20% RCA, 67N/mm2 at 30% RCA and 60N/mm2 at. 40% RCA.

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Pore structure and strength of waste fiber recycled concrete

Nov 28, 2017  recycled concrete to improve its mechanical proper-ties.14,15 As a type of green concrete which can be reused for waste fibers and construction waste, waste fiber recycled concrete not only promotes the application of concrete waste but also is crucial to protect the ecologi-cal environment. The pore structure can be utilized to predict the ...

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Fresh concrete and compressive strength using

Oct 01, 2018  The splitting tensile strength of the recycled aggregate concretes containing high fineness of fly ash was 8.2% of its compressive strength, slightly lower than that of the normal aggregate concrete.

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Frontiers Experimental Study on Mechanical Performance of Recycled ...

Nov 24, 2021  With the development of technology in every field, it is necessary to recommend an eco-friendly material to be utilized in the construction industry. Recently, using waste/recycled materials in the concrete as a substitute is a trend to bring sustainability to the construction industry, but the recycled/waste materials has poor mechanical properties, thus to enhance

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A Step towards Sustainable Concrete with Substitution of Plastic Waste

Cement, sand, coarse aggregate, water, and admixtures are used to make concrete. After water, concrete is the second most used material in the building construction [1,2,3].The quality of aggregates, which make up 65–80 percent of the total quantity of concrete, have a significant impact on concrete strength [].By the end of 2025, the global materials construction industry

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"Testing of High-Performance Concrete using Recycled Aggregates"

Results showed that the strength of concrete cured in 7 days was better than that of the concrete cured in 28 days for all CRR. D. Ecological High-Performance Concrete – Wojciech Kubissa (2017). The authors had used two different waste materials which are recycled concrete aggregates and fly ash, to obtain high performance concrete (HPC).

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Destructive and Non-Destructive Testing of the Performance of

Jun 28, 2022  Concrete technology is adopted worldwide in construction due to its effectiveness, performance, and price benefits. Subsequently, it needs to be an eco-friendly, sustainable, and energy-efficient material. This is achieved by replacing or adding energy-efficient concrete materials from industries, such as ground granulated blast furnace slag, steel slag, fly ash,

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(PDF) Strength evaluation of recycled aggregate concrete using in

Basically, most test methods measure some other prop- 2.1 Materials erties of concrete than its strength, but the evaluation of in-situ concrete strength is carried out by means of an Ordinary Portland cement conforming to BS 12 [7] was established correlation of these properties with strength. used throughout the investigation.

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"Testing of High-Performance Concrete using Recycled Aggregates"

Results showed that the strength of concrete cured in 7 days was better than that of the concrete cured in 28 days for all CRR. D. Ecological High-Performance Concrete – Wojciech Kubissa (2017). The authors had used two different waste materials which are recycled concrete aggregates and fly ash, to obtain high performance concrete (HPC).

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Size Effect on Recycled Concrete Strength and Its

In recent years, research on recycled aggregate concrete has become a hot issue in the field of civil engineering. This paper mainly studies the size effects on compressive and tensile strengths of the recycled aggregate concrete.

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7 Methods for Testing Concrete Strength - For Construction Pros

Jun 11, 2019  A lab must be used to obtain strength data. 7. Wireless Maturity Sensors (ASTM C1074) Method: This technique is based on the principle that concrete strength is directly related to its hydration ...

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Concrete containing recycled waste glass: strength and

Dec 07, 2020  The test results indicated that, compared with conventional concrete, the mechanical strength characteristics of concrete containing GP or GA were more enhanced. The use of GP decreased the deterioration of the concrete under the effect of frost action, whereas the use of GA had an adverse influence on the frost resistance of the concrete.

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Pore structure and strength of waste fiber recycled concrete

Nov 28, 2017  recycled concrete to improve its mechanical proper-ties.14,15 As a type of green concrete which can be reused for waste fibers and construction waste, waste fiber recycled concrete not only promotes the application of concrete waste but also is crucial to protect the ecologi-cal environment. The pore structure can be utilized to predict the ...

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Use of Recycled and Waste Materials in Cement Concrete with

Feb 09, 2019  The test outcomes of water-cement variation showed that at lower water cement ratios (0.50, 0.55) the compressive strength of recycled aggregate concrete at 28 days were lower than natural aggregate while at higher water cement ratio (0.6) the compressive strength of recycled aggregate concrete at 28 days was almost same as natural aggregate ...

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Strength Characteristics of Recycled Concrete after

Due to the recycling of construction waste, recycled concrete has gradually become a viable material in the construction industry. To study the strength property of the recycled concrete after freeze-thawing experiments, recycled

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Development Of High Strength Concrete From Recycled Aggregate Concrete

The tests were conducted by replacing the coarse aggregates in high strength concrete mixes. by 0, 10, 20, 30, and 40 of recycled coarse aggregates. I was able to obtain a high strength of 82N/mm2. at 0% RCA, 78N/mm2 at 10% RCA, 70N/mm2 at 20% RCA, 67N/mm2 at 30% RCA and 60N/mm2 at. 40% RCA.

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Concrete Testing Procedures - Tests for Slump

Fill the mold in three equal layers by volume, not by height. Rod each layer 25 times with a bullet-tipped 5/8-inch diameter rod to compact each layer. After filling and rodding, raise the cone to allow the concrete to subside. The distance the

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Workability and Compressive Strength of Recycled

Concrete waste from construction site such as pile waste and tested concrete cubes waste is quite a problem for the contractor to dispose of. This waste is currently being buried or dumped illegally at a certain area, which lead to

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A Step towards Sustainable Concrete with Substitution of Plastic Waste

Cement, sand, coarse aggregate, water, and admixtures are used to make concrete. After water, concrete is the second most used material in the building construction [1,2,3].The quality of aggregates, which make up 65–80 percent of the total quantity of concrete, have a significant impact on concrete strength [].By the end of 2025, the global materials construction industry

Inquire now

Destructive and Non-Destructive Testing of the Performance of

Jun 28, 2022  Concrete technology is adopted worldwide in construction due to its effectiveness, performance, and price benefits. Subsequently, it needs to be an eco-friendly, sustainable, and energy-efficient material. This is achieved by replacing or adding energy-efficient concrete materials from industries, such as ground granulated blast furnace slag, steel slag, fly ash,

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View of Preparation and properties of high-strength recycled concrete ...

May 07, 2014  The recycled concrete mix was moulded into 150-mm 3 cubic specimens and cured under standard conditions for 28 days, when compressive strength was measured as described in Chinese specification GB/T50081-2002 Standard for test method of mechanical properties on ordinary concrete .

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