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Recycled Concrete Aggregate Research Papers - Academia

This paper is the outcome of experiments on the shear performance of reinforced concrete beams with approved composite-recycled aggregates. The strength grade of composite-recycled aggregate concrete (CRAC) was between 30 MPa and 60 MPa. The shear span-to-depth ratio varied from 1 to 3.

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Recycled aggregates Research Papers - Academia

Using recycled concrete from demolished buildings as an aggregate in new concrete preparation can have a significant role in the sustainable development of the concrete industry; therefore, in this research work, the effect of employing different percentages (i.e., 20, 40, 60, 80 and 100%) of recycled concrete aggregates and the impact of using ...

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Mohaiminul Haque Shahjalal University of ... - Academia

This paper reports the results of a study conducted to investigate the effect of Recycled Concrete Aggregate (RCA) replacement with Normal Concrete Aggregate (NCA) at 0%, 50% and 100%. The effect of tin can fiber (TCF) on Workability, compressive strength and flexural strength of concrete under different curing conditions were conducted with 0% ...

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Cheetirala Govardhan - Academia

coarse and fine aggregate in high strength concrete is described. This includes novel mixing techniques of virgin and recycled aggregate in concrete mixers. For the the project, a sample of aggregates are obtained from crushed cement concrete pavements from Santosh Nagar Locality.

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Md Omar Ali Mondal Khulna University of ... - Academia

The compressive strength was 20.09 and 24.27 MPa, respectively for the concrete made by recycled brick aggregate and natural brick aggregate at 28 days. By using 10%, 15%,and 20% blast furnace slag with recycled brick aggregate, the compressive strength at 28 days was found to be 21.81, 24.52 and 25.30 MPa, respectively.

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Iqbal Marie - Academia

The use of concrete in structures consumes millions of tons of aggregates. Since earth is the source of the aggregates (either natural or crushed), then obtaining these amounts would have an adverse effect on the environment. Furthermore, demolishing concrete structures and dumping the concrete rubbles would aggravate the problem.

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Impact of Coarse Aggregate on Compressive ... - academia

The effect of using crushed quartzite, crushed granite, limestone and marble as coarse aggregate on the mechanical properties of high-performance concrete as indicated by Wu, Chen, Yao, and Zhang (2007) in their study were that the strength, stiffness and fracture energy of concrete for a given water/cement ratio depend on the type of aggregate.

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Jeffery Volz University of Oklahoma - Academia

This paper is the outcome of experiments on the shear performance of reinforced concrete beams with approved composite-recycled aggregates. The strength grade of composite-recycled aggregate concrete (CRAC) was between 30 MPa and 60 MPa. The shear span-to-depth ratio varied from 1 to 3.

Get Price

hasan jalilifar AmirKabir University Of ... - Academia

The main objective of this paper is to evaluate the durability of RAC's made of recycled concrete coarse aggregate (RCCA) containing silica-fume (SF) and natural zeolite (NZ). Four series of mixtures were made using four levels of RCCA as 0%, 25%, 50%, and 100% with natural coarse aggregates (NCA's).

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Bahira Abdulsalam Canadore College - Academia

Apr 24, 2006  Moreover, mixtures incorporating recycled concrete aggregate and fine recycled concrete exhibited a better sulphate resistance behaviour than those with natural aggregates and natural pozzolana. In conclusion, the quality of the used recycled materials is a key factor in producing green and sustainable self-compacting concrete.

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shubham bhardwaj ITM University,Gwalior ... - Academia

To determining the above properties of the recycled aggregate by studying the influence of limited percentage of recycled aggregate in concrete. The Laboratory trials were conducted with the aggregate size of 10-20mm, there were total of six batches of two concrete mixes M30 with 0.42 w/c M20 with 0.5 w/c, consist of 00%, 40% 60% of ...

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Farah Homsi Université Saint-Joseph - Academia

Research Interests: Civil Engineering. edit. About: edit. Advisors: edit. Papers • Regression models to predict workability and strength of flowable concrete containing recycled aggregates more. by Farah Homsi. Publisher: Elsevier BV Publication Name: Materials Today: Proceedings ...

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Mohaiminul Haque Shahjalal University of ... - Academia

This paper reports the results of a study conducted to investigate the effect of Recycled Concrete Aggregate (RCA) replacement with Normal Concrete Aggregate (NCA) at 0%, 50% and 100%. The effect of tin can fiber (TCF) on Workability, compressive strength and flexural strength of concrete under different curing conditions were conducted with 0% ...

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SHU ING DOH - Academia

Research Interests: Recycled aggregate concrete for structural use , Lightweight Concrete , Self Compacting Concrete , High Strength and High Performance Concrete , and Water Engineering edit

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Md Omar Ali Mondal Khulna University of ... - Academia

The compressive strength was 20.09 and 24.27 MPa, respectively for the concrete made by recycled brick aggregate and natural brick aggregate at 28 days. By using 10%, 15%,and 20% blast furnace slag with recycled brick aggregate, the compressive strength at 28 days was found to be 21.81, 24.52 and 25.30 MPa, respectively.

Get Price

Iqbal Marie - Academia

The use of concrete in structures consumes millions of tons of aggregates. Since earth is the source of the aggregates (either natural or crushed), then obtaining these amounts would have an adverse effect on the environment. Furthermore, demolishing concrete structures and dumping the concrete rubbles would aggravate the problem.

Get Price

Marian Sabau Universidad de la Costa - Academia

Considering a control mix without recycled aggregate (RCA0) designed for a compressive strength of 34 MPa, two types of concrete mixes with 50% (RCA50) and 100% (RCA100) replacement percentage of natural coarse aggregate by recycled aggregate were made. The resulting concrete specimens were tested at three different curing ages, 7, 14, and 28 days.

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Qasim Khan NWFP University of Engineering ... - Academia

Recycled aggregates are comprised of crushed, graded inorganic particles processed from the materials that have been used in the constructions and demolition debris. The aim for this research was to determine the performance of recycled aggregate in the structural concrete giving a better understanding on the

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Hon Lip Yung RMIT University - Academia

This paper highlights the key considerations involved in the recycling and construction process of aircraft stand rigid pavement using concrete with RCA. The project demonstrates the feasibility of using RCA as an alternative to natural aggregate in concrete

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António Santos Silva National ... - lnec.academia

António Santos Silva, National Laboratory for Civil Engineering, Materials Department, Department Member. Studies Materials Science, Sustainable Building Materials, and

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Impact of Coarse Aggregate on Compressive ... - academia

The effect of using crushed quartzite, crushed granite, limestone and marble as coarse aggregate on the mechanical properties of high-performance concrete as indicated by Wu, Chen, Yao, and Zhang (2007) in their study were that the strength, stiffness and fracture energy of concrete for a given water/cement ratio depend on the type of aggregate.

Get Price

Farah Homsi Université Saint-Joseph - Academia

Research Interests: Civil Engineering. edit. About: edit. Advisors: edit. Papers • Regression models to predict workability and strength of flowable concrete containing recycled aggregates more. by Farah Homsi. Publisher: Elsevier BV Publication Name: Materials Today: Proceedings ...

Get Price

Bahira Abdulsalam Canadore College - Academia

Apr 24, 2006  Moreover, mixtures incorporating recycled concrete aggregate and fine recycled concrete exhibited a better sulphate resistance behaviour than those with natural aggregates and natural pozzolana. In conclusion, the quality of the used recycled materials is a key factor in producing green and sustainable self-compacting concrete.

Get Price

hasan jalilifar AmirKabir University Of ... - Academia

The main objective of this paper is to evaluate the durability of RAC's made of recycled concrete coarse aggregate (RCCA) containing silica-fume (SF) and natural zeolite (NZ). Four series of mixtures were made using four levels of RCCA as 0%, 25%, 50%, and 100% with natural coarse aggregates (NCA's).

Get Price

ENRIC VAZQUEZ/EC/UPC Universitat ... - upc.academia

Recycled aggregates concrete (RAC) becomes an important participant in recycled materials although there are still questionable properties of it, like chloride penetration and diffusion. An extensive experimental campaign was performed in order to evaluate the effect of recycled concrete aggregates (RCA) over some properties of concretes.

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Sophie Elia University of Cyprus - Academia

Sophie Elia, University of Cyprus, Civil and Environmental Engineering Department, Graduate Student. Studies Concrete, Aggregates, and Recycled Concrete Aggregate.

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Murat Tuyan Ege University - Academia

The effects of coarse recycled concrete aggregate on freeze–thaw resistance, mechanical performance and transport properties of self-consolidating concrete (SCC) were investigated. Recycled concrete aggregate (RCA) was substituted for crushed coarse limestone aggregate as 0, 20, 40 and 60 wt% of limestone aggregate.

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Jagruti Jagruti - gtu-in.academia

SCM in concrete. In this study, replacements of cement with silica fume 4%, 8% and12% mineral quartz 5% for concrete mix of M35 and M40 grade. The natural aggregate is replaced by recycled aggregate (RA) with 30%. This paper study conducted on water absorption and sorptivity test on recycled aggregate concrete (RAC). The experiment result ...

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Marian Sabau Universidad de la Costa - Academia

Considering a control mix without recycled aggregate (RCA0) designed for a compressive strength of 34 MPa, two types of concrete mixes with 50% (RCA50) and 100% (RCA100) replacement percentage of natural coarse aggregate by recycled aggregate were made. The resulting concrete specimens were tested at three different curing ages, 7, 14, and 28 days.

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Alaa A Bashandy Menoufia University - Academia

Alaa A Bashandy, Menoufia University, Civil Engineering Department, Faculty Member. Studies Self Curing Concrete, Recycled aggregates, and Repair and Maintenance. Dr. ALaa A. Bashandy is a Professor at Civil Eng. Department at Menoufia University,

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Seyedhamed Sadati Missouri University of ... - Academia

Seyedhamed Sadati, Missouri University of Science and Technology, Civil, Architectural and Environmental Engineering Department, Department Member. ... Research Interests: none. edit. About: edit. Advisors: edit. Papers • Field performance of concrete pavement made with recycled concrete aggregate more. by Seyedhamed Sadati. Download (.pdf) ...

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Selva Prakash Anna University - Academia

Construction Demolition waste has greater potentiality in replacing fully or partially in main line construction activities. In this paper an experimental program is undertaken in which three different mixes (i) Replacing 10mm, (ii) 20mm and (iii) 20mm, 10mm Recycled Coarse Aggregates (RCA) to the normal aggregates in the mix with a proportion of 20%, 25%, 30%, 35%, 40%.

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Bear Bluos Universiti Teknologi Malaysia - Academia

Jan 01, 2009  Research by concrete engineers has clearly suggested the possibility of appropriately treating and reusing such waste as aggregate in new concrete, especially in lower level applications. This paper discusses different aspects of the problem

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António Santos Silva National ... - lnec.academia

António Santos Silva, National Laboratory for Civil Engineering, Materials Department, Department Member. Studies Materials Science, Sustainable Building Materials, and

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