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2020-4-13 · High-performance concrete has low tensile strength and brittle failure. In order to improve these properties of unreinforced concrete, the effects of
2019-9-27 · Review Article Performance characteristics of recycled concrete aggregate as an unbound pavement material S. Jayakodyb,*, C. Gallagea, J. Ramanujama a School of Civil Engineering & Built Environment, Science and Engineering Faculty, Queensland University of Technology, Brisbane, Australia b Faculty of Engineering, South Eastern University of Sri
2014-12-24 · Thirty one concrete mixes made of various combinations of coarse and fine recycled aggregates (produced in Kuwait from demolition waste) were cast and tested. The possibility of producing structural grade concrete using the recycled concrete aggregates (RCA) produced in Kuwait has been investigated in this study. The cube compressive strength of these concretes
2015-2-18 · application of coarse recycled concrete aggregate, as the component materials in the con-crete mixtures, it is possible to produce structural concrete that can be satisfactory and even with high quality, which primarily depends on the characteristics of crushed demolished concrete.
2019-9-1 · Use of recycled concrete aggregates (RCA) as a pavement material is one of the most sustainable engineering applications for the pavement industry. Investigation on the performance characteristics of RCA, such as elastic and plastic deformations of RCA is therefore, needed to assess RCA's application as an unbound pavement material.
Use of recycled concrete aggregates (RCA) as a pavement material is one of the most sustainable engineering applications for the pavement industry. Investigation on the performance characteristics of RCA, such as elastic and plastic deformations of RCA is therefore, needed to assess RCA's applicatio
2021-10-9 · Recycled concrete aggregate (RCA) is produced by the demolition of concrete structures and crushing concrete elements. RCA is the predominant stream of C&D materials that has superior strength and stiffness properties compared to other C&D types, such as crushed brick and waste excavation rock.
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 concrete and ordinary concrete were tested for their post-test strength after freeze-thawing for 0, 50, and 100 times.
2005-10-1 · A series of consolidated drained triaxial compression tests were performed on recycled concrete aggregates to investigate the feasibility of their use as a backfill material for geotechnical engineering structures requiring a high stability while allowing a limited amount of deformation, such as embankments and conventional type and geosynthetic-reinforced soil
2013-12-1 · 2.3. Test methods. All concrete mixtures used for the compressive strength test and accelerated carbonation test were 100 × 100 × 100 mcm cube models.After 26 days of curing in water at 20 ± 2 °C, the samples were dried for 48 h at 60 ± 2 °C to accelerate the carbonation test.All surfaces of the dried samples were sealed by paraffin, except for two opposing side
2019-9-27 · Review Article Performance characteristics of recycled concrete aggregate as an unbound pavement material S. Jayakodyb,*, C. Gallagea, J. Ramanujama a School of Civil Engineering & Built Environment, Science and Engineering Faculty, Queensland University of Technology, Brisbane, Australia b Faculty of Engineering, South Eastern University of Sri
2020-11-28 · This study investigates the behavior of reinforced concrete and recycled fibre reinforced concrete influenced to temperatures of 200 ° C 500 ° C, on two types of concrete such as recycled concrete, recycled fibre concrete. The experiment was conducted at the Structural Engineering laboratory at Ho Chi Minh City University of Technical Education. The
Use of recycled concrete aggregates (RCA) as a pavement material is one of the most sustainable engineering applications for the pavement industry. Investigation on the performance characteristics of RCA, such as elastic and plastic deformations of RCA is therefore, needed to assess RCA's applicatio
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 concrete and ordinary concrete were tested for their post-test strength after freeze-thawing for 0, 50, and 100 times.
2008-11-3 · characteristics of fresh and hardened recycled aggregate concrete and natural aggregate concrete is relatively narrower han reported for laboratoryt -crushed recycled aggregate concrete mixes. For concrete without blast furnace slag, having similar volumetric mix proportions and workability,
2021-12-3 · Characteristic Properties of Concrete with Recycled Burnt Bricks as Coarse Aggregates Replacement S.U. Azunna1*, J.O. Ogar2 1. Civil Works Department, Ringo Star Ventures Ltd, 34 Panama Street Ministers Hill, Maitama, Abuja, Nigeria 2 Department of Civil Engineering, Faculty of Engineering, Federal Polytechnic Bauchi, Bauchi, Nigeria
Durability characteristics of recycled aggregate concrete were studied with Rapid chloride penetration test (as per ASTMC1202), sorptivity test and acid test to assess resistance against chloride ion penetration, capillary suction and chemical attack respectively.
Subsequently, the effect on the characteristics of recycled concretes made with a water/cement ratio of 0.50, when part of the recycled aggregate was replaced with recycled sand, was studied. The results obtained on mortars indicate that the use of up to 20% recycled sand caused a drop in the compressive and flexural strength.
2021-3-25 · The development process and evolution characteristics of recycled concrete were comprehensively reviewed and analyzed, then a novel concept of full recycled concrete was put forward. Based on literature analysis, the work performance, mechanical property and durability of recycled concrete under different replacement rates of different recycled component were
2021-12-6 · Leaching Characteristics of Geopolymer Cement Concrete Containing Recycled Concrete Aggregates January 2016 Journal of Hazardous,
2020-11-28 · This study investigates the behavior of reinforced concrete and recycled fibre reinforced concrete influenced to temperatures of 200 ° C 500 ° C, on two types of concrete such as recycled concrete, recycled fibre concrete. The experiment was conducted at the Structural Engineering laboratory at Ho Chi Minh City University of Technical Education. The
2019-9-27 · Review Article Performance characteristics of recycled concrete aggregate as an unbound pavement material S. Jayakodyb,*, C. Gallagea, J. Ramanujama a School of Civil Engineering & Built Environment, Science and Engineering Faculty, Queensland University of Technology, Brisbane, Australia b Faculty of Engineering, South Eastern University of Sri
2021-12-3 · Characteristic Properties of Concrete with Recycled Burnt Bricks as Coarse Aggregates Replacement S.U. Azunna1*, J.O. Ogar2 1. Civil Works Department, Ringo Star Ventures Ltd, 34 Panama Street Ministers Hill, Maitama, Abuja, Nigeria 2 Department of Civil Engineering, Faculty of Engineering, Federal Polytechnic Bauchi, Bauchi, Nigeria
2021-6-1 · Also, the use of recycled concrete aggregates can be very effective for use as a weak or filling concrete and would be of benefit in areas with very little natural virgin aggregate available to the consumer without large transport costs (9) 2.7 Characteristics of Recycled Aggregate in the Eurocodes 2.7.1 Compressive strength
The characteristic of recycled aggregates could be different by its parent concrete because the parent concrete was designed for its purposes such as permeable, durable and high strength concrete. For example, water to cement ratio of
Recycled Aggregate Characteristics. The crushing characteristics of hardened concrete are similar to those of natural rock and are not significantly affected by the grade or quality of the original concrete. Recycled concrete aggregates
2020-4-13 · The obtained effect of an increase in mechanical properties with the addition of recycled fibers compared to unreinforced concrete is unexpected and unparalleled for polypropylene fiber-reinforced concrete (69.7% and 39.4% increase in compressive strength for green polypropylene fiber (PPG) and white polypropylene fiber (PPW) respectively, 276
Subsequently, the effect on the characteristics of recycled concretes made with a water/cement ratio of 0.50, when part of the recycled aggregate was replaced with recycled sand, was studied. The results obtained on mortars indicate that the use of up to 20% recycled sand caused a drop in the compressive and flexural strength.
2013-3-29 · 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
2021-3-25 · The development process and evolution characteristics of recycled concrete were comprehensively reviewed and analyzed, then a novel concept of full recycled concrete was put forward. Based on literature analysis, the work performance, mechanical property and durability of recycled concrete under different replacement rates of different recycled component were
