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Utilization of Demolished Waste as Coarse Aggregate in

Reusing these concrete wastes will help in saving landfill spaces in addition to more sustainability in natural resources The objective of this study is to investigate the possibility of using old recycled concrete as coarse aggregate to make new concrete mixes and its effect on the evolution of the compressive strength of the new concrete mixes Get price


Use of Recycled Aggregate Concrete

properties of recycled fine aggregate and recycled coarse aggregate also compares these properties with natural aggregates Basic changes in all aggregate properties are determined and their effects on concreting work are discussed at length Similarly the properties of recycled aggregate concrete are also determined BasicGet price


Durability studies on concrete with partial replacement of

Commonly used concrete in general consists of cement fine aggregate coarse aggregate and water Natural river sand is the most commonly used material as fine aggregate in concrete One of the important requirements of concrete is that it should be durable under certain conditions of exposure TheGet price


Mechanical Properties Of Recycled Aggregates Concrete

2 6 Recycled Concrete as Aggregate for Structural Concrete Production A comparative analysis of the experimental results of the properties of fresh and hardened concrete with different replacement ratios of natural with recycled coarse aggregate is presented in the paper Get price



recycled fine aggregate and recycled coarse aggregate It also compares these properties with natural aggregates Basic changes in all aggregate properties were determined and their effects on concreting work were discussed at length Similarly the properties of recycled aggregate concrete were also determined and explained here Get price


Strength and Durability Evaluation of Recycled Aggregate

This paper discusses the suitability of producing concrete with 100 % recycled aggregate to meet durability and strength requirements for different applications Zhang M H (2013) Effects of the parent concrete properties and crushing procedure on the properties of coarse recycled concrete aggregates Journal of Materials in Civil Get price


Recycled Aggregate in Concrete

Concrete is the most used man-made material in the world since its invention The widespread use of this material has led to continuous developments such as ultra-high strength concrete and self-compacting concrete Recycled Aggregate in Concrete Use of Industrial Construction and DemolitionGet price


Recycled Aggregate Concrete Structures

Dr Xiao's main areas of research are in the material behavior and structural performance of recycled aggregate concrete aspects he has been exploring for the past 15 years He is the author or co-author of more than 300 papers on material properties and material behavior interfacial layer mechanisms and modeled recycled aggregate concrete Get price


Seismic performance of recycled aggregate–filled

In the study in which two different types of recycled aggregates obtained from low-strength waste concrete were used as the backfill materials the sliding and overturning analyses were conducted for nine cantilever RC retaining walls under seismic or static loads by Get price


Green Concrete from Sustainable Recycled Coarse Aggregates

Present investigations deal with the development of green concrete (M 30 grade) using recycled coarse aggregates for sustainable development Characterization of recycled coarse aggregates showed that physical and mechanical properties are of inferior quality and improvement in properties was observed after washing due to removal of old weak mortar adhered on its surface Get price


Recycling of Brick Aggregate Concrete as Coarse Aggregate

Jul 07 2015Based on this investigation it is revealed that recycled brick aggregate can be used as coarse aggregate for making concrete of strength 20 7 to 31 0 MPa For the same mix design the recycled aggregate concrete produces almost similar strength compared with the first class brick aggregate concrete commonly used in Bangladesh Get price


Effects of Recycled Tyre Steel Fibres on the Compressive

This study was carried out to evaluate and assess the effects of recycled tyre steel fibres and palm kernel shells on the compressive splitting tensile and flexural strengths of structural lightweight concrete using recycled tyre steel fibres for reinforcement and palm kernel shells as partial replacement of coarse aggregates Recycled tyres Get price


Recycled Concrete—A Source for New Aggregate

No significant increase in the strength of recycled aggregate concrete was obtained by reducing the W/C ratio below 0 40 It is indicated that the quality of recycled aggregate concrete will improve with the quality of recycled mortar or if the recycled material has a high aggregate-cement ratio Get price


Characterization of recycled polycarbonate from electronic

concrete was made with Portland cement sand gravel water and this recycled polycarbonate Specimens without polycarbonate were produced for comparison purposes The effect of the particle sizes and concentrations of recycled polycarbonate within the concrete on the compressive strength and density was studied Get price


Upscaling the Use of Recycled Aggregate Concrete

SILVA R V DE BRITO J AND DHIR R K Establishing a relationship between modulus of elasticity and compressive strength of recycled aggregate concrete Journal of Cleaner Production 2016 Vol 112 pp 2171-2186 SILVA R V et al Design of reinforced recycled aggregate concrete elements in conformity with Eurocode 2 Get price


MPA Cement Fact Sheet 6 Use of recycled aggregates in

specification-specific conditions on the use of recycled aggregates in new concrete construction RCA conforming to the requirements of BS 8500-2 can be used in both Designated and Designed concretes In Designated concretes RC25 to RC50 a maximum of 20% of the natural coarse aggregate can automatically be replaced by RCA Get price


Recycling of Demolished Concrete and Masonry

This new RILEM report contains state-of-the-art reviews on three topics recycling of demolished concrete recycling of masonry rubble and localized cutting by blasting of concrete It has been compiled by an international RILEM Committee and draws on Get price



This study aims to valorize non-biodegradable waste through their recycling as aggregates in concrete Concretes made from different types of recyclates (recycled concrete glass and tire) and natural aggregates were made and tested in compression at 28 days A modeling test of the resistance of the various concretes to compression has been carried out Get price


recycled concrete Topic

Jul 01 2019Recycled Concrete Definition hardened concrete that has been processed for reuse usually as aggregate - ACI Concrete Terminology The reason for recycling is the reduction of waste in order to protect nature against pollution the increasing shortage of suitable dumping grounds and to save energy and natural resources Get price


Experimental Study on Engineering Performance of Recycled

concrete aggregate-10mm and recycled concrete aggregate-20mm size (Fig 2) shows how the concrete was crushed manually and then used Fig 1 Concrete Rubble Fig 2 Recycled Aggregate Natural Aggregate III EXPERIMENTAL METHODOLOGY Mix Design and Casting of Concrete Proportioning of ConcreteGet price


Green Concrete from Sustainable Recycled Coarse Aggregates

Present investigations deal with the development of green concrete (M 30 grade) using recycled coarse aggregates for sustainable development Characterization of recycled coarse aggregates showed that physical and mechanical properties are of inferior quality and improvement in properties was observed after washing due to removal of old weak mortar adhered on its surface Get price


New Trends in Eco

Sections cover various recycled materials applied in concrete production present the latest on the lifecycle analysis of recycled aggregate concrete detail new trends in recycled aggregate concrete research and finally present updates on upscaling the use of recycled aggregate concrete and structural reliability Get price


The effect of fine and coarse recycled aggregates on fresh

aggregates are decreasing in the world In the present study the effects of recycled concrete aggregates as a partial replacement for fine (by 50%) and coarse aggregates (by ) were examined in the self-compacting concrete mixtures which contain air-entraining agents and silica fumes Two series of self-compacting concrete mixes have been Get price


Effects of Recycled Tires Rubber Aggregates on the

S Sgobba G C Marano M Borsa and M Molfetta "Use of Rubber Particles from Recycled Tires as Concrete Aggregate for Engineering Applications " Coventry University and The University of Wisconsin Milwaukee Centre for By-Products Utilization 2nd International Conference on Sustainable Construction Materials and Technologies Ancona 28 Get price


Construction Industry Waste Management

Recycled Aggregate Recycled Aggregate Concrete I Introduction Any construction activity requires several materials such as concrete steel brick stone glass clay mud wood and so on However the cement concrete remains the main construction material used in construction industries Get price


Research Paper Recycling Of Concrete

concrete but that recycled concrete may be expected to have lower strength than concrete made with similar aggregate not previously used Okafor (2010) indicated that recycled aggregate can be used to produce quality concrete which meets the required strength of a concrete According to Okafor concrete is much higher inGet price


Effect of recycled concrete aggregates on strength and

Title Effect of recycled concrete aggregates on strength and stiffness gain of concrete and on bond strength of steel prestressing strand Date Published March-April 2018 Volume 63 Issue 2 Page Numbers 87-105 Authors Michael R Brandes and Yahya C Kurama Click here to view the full journal article Abstract This paper presents an experimental investigation on the use of recycled concrete Get price


Behavior and Strength of Reinforced Recycled

recycled aggregate in concrete have been extensively conducted around the world However most researchers have focused on the mechanical properties of recycled aggregate concrete as replacement the natural aggregates (7- 21) Depending on the type of recycled aggregate and itsGet price


International Journal of Engineering Trends and Technology

recycled aggregate to 80% recycled aggregate and with more percentage replacement of recycled aggregate used in the concrete specimen the percentage of tensile strength remained are gradually decreasing 3 Concrete made with recycled aggregate produced from construction and demolition waste has a compressive strengthGet price


International Research Journal of Engineering and

concrete Many researchers state that recycled aggregates are only suitable for non-structural concrete application This study shows that the recycled aggregates that are obtained from concrete specimen make good quality concrete The slump of recycled aggregate concrete is more than the normal concrete Get price


utilization and recycling demolished concrete

Utilization of Demolished Concrete Waste for New Construction feasibility and recycling of demolished waste concrete for new construction The present investigation to be focused on recycling demolished waste materials in order to reduce construction cost and resolving housing problems faced by the low income communities of the world Get price


Efficient Utilization of Recycled Concrete Aggregate in

Mar 03 2013In Singapore the applications of recycled concrete aggregate (RCA) are limited to nonstructural concrete road construction and backfilling To realize the beneficial use of RCA an in-depth study was conducted to evaluate its use in structural concrete Get price

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