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  • Recycled Aggregate an overview ScienceDirect Topics

    Abbaas I. Kareem, Hamid Nikraz, in Advances in Construction and Demolition Waste Recycling, 2020 Abstract. Inclusion of recycled aggregates (RAs) in asphalt mixtures can reduce the depletion of natural aggregates (NAs) by providing an alternative material for hot-mix asphalt (HMA). Given the effects of cement mortar attached to the RA surface and other impurities, the performance of RA-asphalt

  • 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

  • Strength and Durability Evaluation of Recycled Aggregate

    May 14, 2015· Effects of the parent concrete properties and crushing procedure on the properties of coarse recycled concrete aggregates. Journal of Materials in Civil Engineering, 25(12), 1795–1802. Article Google Scholar Amorim, P., De Brito, J., & Evangelista, L. (2012). Concrete made with coarse concrete aggregate: Influence of curing on durability.

  • Durable Performance of Recycled Aggregate Concrete in

    Jul 07, 2020· Recycled aggregate concrete is an eco-friendly material that is increasingly being used in new constructions. Nowadays, this application is mainly limited by user’s lack of confidence, as coarse recycled aggregate (CRA) is usually more porous, i.e., it has a higher water absorption, than coarse natural aggregate.

  • 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

  • Recycled Aggregate an overview ScienceDirect Topics

    Abbaas I. Kareem, Hamid Nikraz, in Advances in Construction and Demolition Waste Recycling, 2020 Abstract. Inclusion of recycled aggregates (RAs) in asphalt mixtures can reduce the depletion of natural aggregates (NAs) by providing an alternative material for hot-mix asphalt (HMA). Given the effects of cement mortar attached to the RA surface and other impurities, the performance of RA-asphalt

  • [PDF] Treatments for the Improvement of Recycled Aggregate

    The microstructure of recycled aggregate prepared from the crushing of old concrete was studied. It was found that the recycled aggregate is covered with loose particles that may prevent good bonding between the new cement matrix and the recycled aggregate. The old cement paste that remained on the natural aggregate was porous and cracked, leading to weak mechanical properties of the recycled

  • Recycled Concrete—A Source for New Aggregate

    Jul 01, 1984· The recycled aggregate concrete showed somewhat better workability characteristics than conventional mixes although its modulus of elasticity and durability characteristics were lower. It is proposed that satisfactory concrete can be made by recycling concrete as aggregate where disposal problems exist or where natural aggregate is either

  • Materials Special Issue : Properties and Novel

    The recycling of construction materials such as concrete aggregates and mixed aggregates and their subsequent application in new constructions leads to the inclusion of the construction sector in the circular economy, avoiding the accumulation of waste and the consumption of natural resources.

  • Performance enhancement of recycled concrete aggregate-A

    Note: NA: natural aggregate; G-RCA: gravel recycled concrete aggregate; C-RCA: limestone recycled concrete aggregate. C. Shi et al. / Journal of Cleaner Production 11 2 (2016) 466 e 472 471

  • Recycled Concrete Aggregate Research Papers Academia.edu

    The results showed that the mix with 25% recycled aggregates and 5% micro-silica presented comparable performance to that of the plain concrete, while using a higher micro-silica content negatively affected the rheological properties. In addition, the effect of recycled aggregate and micro-silica on the microstructure of mixes were examined.

  • Mix design procedure for recycled aggregate concrete

    Journals & Books; Help Use of recycled aggregate concrete (RAC) is one such attempt and is an answer to some of the problems in constructional engineering. The concept of using RAC is now gaining popularity and research in this direction has gained momentum. In this paper, the authors have identified the most suitable method of mix design

  • Seismic Performance of Interior and Exterior Beam–Column

    Mar 03, 2019· Journal of Structural Engineering / Volume 145 Issue 3 March 2019. However, only a few experimental tests have been conducted on recycled aggregate concrete (RAC) beam–column joints. This paper presents an experimental investigation of the seismic behavior of various types of RAC beam–column joints. A series of five RAC beam–column

  • Recycled Aggregates Portland Cement Association

    Only up to 10 to 20 percent fine RCA is beneficial. The aggregate should be tested at several substitution rates to determine the optimal rate. Often recycled aggregate is combined with virgin aggregate when used in new concrete. An example of a mix design using recycled aggregates in a pavement application is shown following table.

  • Concrete production using recycled waste plastic as aggregate

    In this study, total 90 cylinders and 5 beams were prepared with stone aggregate and 5%, 10%, 15% and 20% replacement of stone by recycled plastic aggregate at w/c ratio of 0.50. Tests were

  • Use of recycled concrete aggregate in concrete: a review

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

  • Mechanical Behavior of Masonry Mortars Made with Recycled

    Recycling is an important habit to avoid waste. This paper evaluates the performance of masonry mortar, elaborated by replacing natural sand with recycled fine aggregate (RFA) obtained from mortar. Five families of mixtures were prepared with different replacement proportions: 20%, 40%, 60%, and 100%. A 1:4 volumetric cement-to-aggregate ratio was used for all mixtures by experimentally

  • The Effect of Recycled Aggregate Quality on Concrete

    Recycled aggregate was produced by crushing the waste concrete from buildings. Two types of concrete mixtures were tested namely concrete made fully using normal aggregate as a control concrete and another type of concrete made using recycled coarse aggregate (25, 50 and 75% coarse recycled aggregate replacement were used).

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