recycled aggregate concrete journals

Special Issue "Advances in Recycled Aggregate Concrete"

Accordingly, the primary performance of low-quality recycled aggregate concrete could be improved by varying the replacement ratio of the recycled aggregate and using appropriate mineral admixtures such as fly ash and ground granulated blast-furnace slag. The results show the potential for the use of low-quality aggregate in structural concrete.

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Research Article CHARACTERIZATION OF RECYCLED …

performance of recycled fine aggregate in concrete, use of silica fumes in recycled aggregate concrete, use of fly ash in recycled aggregate concrete etc are shown with experimental reasons. In general, present status of recycled aggregate in India with their future need and its successful utilization were discussed here.

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Recycled Aggregate Concrete: Particle Packing Method (PPM ...

Aug 02, 2018· New mixture proportioning method for concrete made with coarse recycled concrete aggregate. Journal of Materials in Civil Engineering, 21(10), 601–611. CrossRef Google Scholar. 15. Knaack, A. M., & Kurama, Y. C. (2013). Design of concrete mixtures with …

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Critical Review of Recycled Aggregate Concrete Properties ...

Nov 11, 2020· Although the properties of recycled aggregate concrete are widely considered to be inferior to those of natural aggregate concrete, research in the field still is of merit due to growing awareness of environmental concerns relating to the concrete construction and demolition industry.

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Utilisation of Recycled Aggregate as Coarse Aggregate in ...

Aug 01, 2009· In this rapid industrialised world, recycling construction material plays an important role to preserve the natural resources. In this research, recycled concrete aggregates (RCA) from site-tested concrete specimens were used. These consist of 28-days concrete cubes after compression test obtained from a local construction site. These concrete cubes are crushed to suitable size and …

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Comparative LCA of concrete with recycled aggregates: a ...

Aug 06, 2020· In total, eight concrete mixtures were prepared using CEM-I Portland cement conforming to EN 197-1 with R ck 32.5 MPa and recycled and natural aggregates (with an amount of recycled aggregates ranging from 0 to ) and using both a traditional binder and GGBFS as precursor of the alkaline-activated binder. All the mixtures displayed a good ...

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Properties of Concrete Using Treated Low-Class Recycled ...

Since high quality natural aggregates are becoming scarce, it is important that industrial recycled products and by-products are used as aggregates for concrete. In Japan, the use of recycled aggregate (RG) is encouraged. Since, strength and durability of recycled aggregate concrete is lower than that of normal aggregate concrete, the use of recycled aggregate has not been significant.

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Special Issue "New Trends in Recycled Aggregate Concrete"

Sep 30, 2018· In recent years, the amount of construction waste and recycled aggregate has been increasing every year in Korea. However, as the recycled aggregate is poor quality, it is not used for concrete, and the Korean government has strengthened …

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(PDF) Recycled concrete: a review - ResearchGate

Aug 18, 2015· of recycled aggregate concrete designed with equivalent mortar volume method, Cement & Concrete Composites 31, 555 – 563 Abrams, D., 1918, The Design of Concrete Mixtures.

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Studies on recycled aggregates-based concrete - Major ...

Jun 01, 2006· The percentages of recycled concrete aggregates were varied and it was observed that properties such as compressive strength showed a decrease of up to 10% as the percentage of recycled concrete aggregates increased. Water absorption of recycled aggregates was found to be greater than natural aggregates, and this needs to be compensated during ...

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"EXPERIMENTAL STUDY ON CONCRETE BLOCKS FROM …

The main objective of this study is to experimentally investigate the suitability of recycled aggregate from demolition wastes on the strength aspects of concrete. The specific objectives are as follows; To replace natural coarse aggregate (NCA) by recycled coarse aggregate (RCA) …

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STUDY ON SILICA INFUSED RECYCLED AGGREGATE …

Study on Silica Infused Recycled Aggregate Concrete Using Design of . . . . 959 Journal of Engineering Science and Technology April 2017, Vol. 12(4) Nomenclatures CCD Central composite design DoE Design of experiments ITZ Interfacial transition zone NMA Normal mix approach P P-value PRESS Prediction sum of squares RA Recycled aggregate R-Sq R-squared

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A STUDY ON RECYCLED CONCRETE AGGREGATES

A STUDY ON RECYCLED CONCRETE AGGREGATES PAVAN P S 1, BABITHA RANI H,DEEPIKA GIRISH, RAGHAVENDRA K M 2, VINOD P N 1,DUSHYANTH.V.BABU.R,SHAIK NUMAN1 1Assistant Professor, Department of Civil Engineering, SET, Jain University. 2Student, Department of Civil Engineering, SET, Jain University. Abstract The amount of construction waste has been dramatically …

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Mechanical and durability behaviours of concrete made with ...

Sep 05, 2017· Use of recycled concrete aggregate in concrete: a review. Md. Safiuddin et al. Journal of Civil Engineering and Management. Volume 19, 2013 - Issue 6. Published online: 24 Dec 2013. review article. The influence of the use of recycled aggregates …

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Mechanical Properties and Durability of Recycled Aggregate ...

Jun 30, 2021· The recycled aggregate permeable concrete made of reused construction wastes is very important for realizing the sustainable development of the construction industry, it can alleviate the adverse impact of surface runoff during storm and the urban heat island effect.

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recycled Topic - American Concrete Institute

Jul 01, 2021· Shear Strength of Reinforced Concrete Beams Using Recycled Coarse Aggregates without Stirrups. Publication: Structural Journal Date: 11/1/2020 Synergistic Effects of Polypropylene and Glass Fiber on Mechanical Properties and Durability of Recycled Aggregate Concrete

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Recycled Concrete Aggregates: A Review | International ...

Mar 29, 2013· After demolition of old roads and buildings, the removed concrete is often considered worthless and disposed of as demolition waste. By collecting the used concrete and breaking it up, recycled concrete aggregate (RCA) is created (Fig. 1).This paper focuses on coarse RCA which is the coarse aggregate from the original concrete that is created after the mortar is separated from the …

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(PDF) Use of recycled concrete aggregate in concrete: A review

The use of recycled concrete aggregate (RCA) in concrete as partial and full replacements of natural coarse aggregate is growing interest in the construction industry, as it reduces the demand for ...

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Experimental Study on the Effect of Recycled Aggregate and ...

By using recycled concrete aggregate and GGBS in concrete we can reduce environmental problem to some extent. This experimental study evaluate the effective utilisation of GGBS and recycled aggregate in concrete. In this study GGBS is used as partial replacement for cement and recycled aggregate as partial replacement for coarse aggregate.

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(PDF) IRJET- Recycled Concrete Aggregates | IRJET Journal ...

The pressure at which water is recycled concrete as coarse aggregate for the production applied is 500 psi for about 15 to 20 min. washing process of concrete. It is required to verify whether the recycled cleans the aggregates to a considerable extent. The RCA concrete aggregate is acceptable or not.

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Use Of Recycled Aggregate In Concrete – IJERT

(2013). Use of recycled concrete aggregate in concrete: a review. Journal of Civil Engineering and Management: Vol. 19, No. 6, pp. 796-810.

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Recycled Aggregates for Concrete: Problems and Possible ...

Aug 06, 2016· When preparing HRH (recycled concrete with concrete aggregate)with 20%, 50% and of recycled concrete coarse aggregate > 4 mm and with the same quantity of fresh mortar, very low increase of the mercury intrusion porosity was observed …

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Quality improvement of recycled aggregate concrete using ...

N2 - Recycled aggregates (RA) are obtained from construction and demolished waste, laboratory crushed concrete and concrete waste at RMC plants. The concrete made from recycled aggregate is known as recycled aggregate concrete. The use of recycled aggregate is very beneficial to the environment in civil works.

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Mechanical Performance of Concrete Made with Recycled ...

Jan 01, 2016· An experimental program was conducted in order to compare the engineering properties of reclaimed concrete aggregate waste from various demolition sources: lab-tested concrete waste from a commercial ready-mix company with known engineering properties, construction and demolition (C&D) concrete waste with some information about engineering properties, and regular aggregate …

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Concrete Based on Recycled Aggregates for Their Use in ...

The following study is aimed at valorizing an important part of waste from building demolition, particularly concrete as a source of aggregates for their usage in new hydraulic concrete formulation. The experimental study mainly consisted of physical characterization of natural and recycled aggregates respectively and the impact of the latter on some properties of the new formulated concrete ...

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Shear Strength Behavior of Fiber Reinforced Recycled ...

Recycled Aggregate Concrete (RAC) is produced through the process of crushing, sieving the old concrete and replacement of the natural aggregate. This paper investigates experimentally and numerically the shear behavior of 74 reinforced concrete beams constructed from RAC. Latest researches confirm the reduction of shear strength due to the use ...

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Strength and Durability Evaluation of Recycled Aggregate ...

May 14, 2015· Durability of recycled aggregate concrete designed with equivalent mortar volume method. Cement & Concrete Composites, 31(8), 555–563. Article Google Scholar Abdelfatah, A., Tabsh, S., & Yehia, S. (2011). Utlilization of recycled coarse aggregate in concrete mixes. Journal of Civil Engineering and Architecture, 5(6), 562–566.

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Recycled Aggregate - an overview | ScienceDirect Topics

Said Kenai, in Waste and Supplementary Cementitious Materials in Concrete, 2018. Abstract. Construction industry generates huge amounts of debris that needs to be recycled and reused as recycled aggregates (RAs) for partial or total substitution of natural aggregates. Recycling reduces waste and reduces energy consumption and hence contributes to a more sustainable construction …

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Experimental Study on Recycled Concrete Aggregates

upto a certain percentage. Recycled aggregate concrete is in close proximity to normal concrete in terms of split tensile strength. The slump of recycled aggregate concrete is more than the normal concrete. At the end, it can be said that the RCA upto 50 % …

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Shear Strength of Concrete with Recycled Aggregates ...

Sep 01, 2021· Title: Shear Strength of Concrete with Recycled Aggregates Reinforced with Steel Fibers Author(s): Juliana Trindade, Sergio Luis Garcia, and Humberto Torres Publication: Materials Journal Volume: 118 Issue: 5 Appears on pages(s): 185-198 Keywords: push-off test; recycled aggregates; shear; steel fibers Date: 9/1/2021 Abstract: This study investigated the friction shear …

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Quality Improvement of Recycled Aggregate Concrete using ...

May 06, 2020· The concrete made from recycled aggregate is known as recycled aggregate concrete. The use of recycled aggregate is very beneficial to the environment in civil works. Its usage also helps in financial saving as the cost of transportation and production energy cost of natural coarse aggregate (NCA) is reduced.

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Strength index analysis of concrete ... - journals.sagepub.com

Sep 30, 2021· Factors such as strength and replacement rate of recycled aggregates were used as input parameters to establish the neural network model. The BP-NN model was optimized by analyzing the influence and sensitivity of each parameter in the model. Then the mechanical properties of concrete with LSRA were predicted.

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Experimental study on strength behaviour of recycled ...

Mar 10, 2013· The concrete specimen with. recycled coarse aggregate at 28 days of curing has the lowest tensile strength, which was only 1.952 N/mm2. It is around 38.81% drop when compared to control. concrete specimen. There is a drop in tensile strength of 10.66%, 18.18%, 24.76% and 34.79% for the concrete.

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