effect of recycled concrete aggregate quality on

specializing in the production of large, medium and small concrete mixers, concrete mixing stations, stabilized soil mixing stations and other equipment. It is a heavy industry enterprise integrating R & production and sales.

EFFECT OF RECYCLED CONCRETE AGGREGATE QUALITY ON ...

Jul 14, 2020  The objective of this study is to investigate the effect of recycled concrete aggregate (RCA) quality on the properties of hardened concrete properties such as compressive strength, splitting tensile strength, density, water absorption capacity and porosity accessible to water. The RCA used in this study was obtained from the crushing of waste ...

Get PriceEmail Inquiry

(PDF) The Effect of Recycled Aggregate Quality on Concrete ...

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,

Get PriceEmail Inquiry

EFFECT OF RECYCLED AGGREGATE QUALITY ON VARIATION

The effect of recycled aggregate quality on the variation of compressive strength was examined at several water-cement ratios. The variation of recycled aggregate concrete strength was higher than that for normal aggregates but still fellbelow the JSCE-specified limit, except when combining different recycled aggregate types.

Get PriceEmail Inquiry

EFFECT OF RECYCLED CONCRETE AGGREGATE QUALITY ON ...

Request PDF EFFECT OF RECYCLED CONCRETE AGGREGATE QUALITY ON PROPERTIES OF CONCRETE The possibility of the use of recycled aggregates from the construction industry in green concrete ...

Get PriceEmail Inquiry

Effects of using recycled concrete aggregates on the ...

The quality of RCA and its replacement ratios of natural aggregates were assessed. • Lower RCA quality and higher replacement increased the plastic and drying shrinkage. • The autogenous shrinkage decreased by using lower RCA quality and higher RCA content. • RCA showed internal curing effects which improved the mechanical properties of HPC.

Get PriceEmail Inquiry

Effects of environmental actions, recycled aggregate ...

Nov 01, 2020  To evaluate the effects of recycled aggregate (RA) quality on the RC durability, modeled recycled concrete (MRC) containing modeled recycled aggregate (MRA) with various thickness and coverage of old mortar, along with different degrees of initial damage, was fabricated and tested.

Get PriceEmail Inquiry

Quality Improvement Techniques for Recycled Concrete ...

The main problem in using recycled concrete aggregate (RCA) as a construction material is due to the weak adhered mortar which usually has higher porosity and water absorption. It also has lower strength compared to natural aggregate (NA), and it often forms weak interfacial transition zones in the recycled aggregate concrete (RAC). These weak ...

Get PriceEmail Inquiry

The Effect of Recycled Aggregate Quality on Concrete ...

The Effect of Recycled Aggregate Quality on Concrete Properties. Abstract: Waste from construction and demolition are one of the main types of wastes produced worldwide. The aim of this study is to lessen the environmental problems produced by the dumping of waste from construction and demolition. This study presents a comparative analysis of ...

Get PriceEmail Inquiry

The Effect of Recycled Aggregate Quality on Concrete ...

The Effect of Recycled Aggregate Quality on Concrete Properties 1Salahaldein Alsadey and 2Abdelnaser Omran and 1Issa Amaish 1Department of Civil Engineering, Faculty of

Get PriceEmail Inquiry

EFFECT OF RECYCLED CONCRETE AGGREGATE QUALITY ON ...

Request PDF EFFECT OF RECYCLED CONCRETE AGGREGATE QUALITY ON PROPERTIES OF CONCRETE The possibility of the use of recycled aggregates from the construction industry in green concrete ...

Get PriceEmail Inquiry

Effects of using recycled concrete aggregates on the ...

The quality of RCA and its replacement ratios of natural aggregates were assessed. • Lower RCA quality and higher replacement increased the plastic and drying shrinkage. • The autogenous shrinkage decreased by using lower RCA quality and higher RCA content. • RCA showed internal curing effects which improved the mechanical properties of HPC.

Get PriceEmail Inquiry

Effect of fine recycled aggregate on the strength and ...

May 19, 2021  Fumoto T, Yamada M (2002) Influence of the quality of recycled fine aggregate on properties of concrete. Memoris of Faculty of Engineering (Symposium paper) 43:97–103 Osaka: Osaka City University. Geng J, Sun J (2013) Characteristics of the carbonation resistance of recycled fine aggregate concrete. Constr Build Mater 49:814–820

Get PriceEmail Inquiry

Effect of Recycled Aggregates on Previous Concrete ...

Sep 01, 2019  Effect of Recycled Aggregates on Previous Concrete Properties. Mohammed Seddik Meddah 1, Maryam Al Oraimi 1, Abdul Wahid Hago 1 and Khalifa Al Jabri 1. Published under licence by IOP Publishing Ltd IOP Conference Series: Materials Science and Engineering, Volume 603, Issue 3 Citation Mohammed Seddik Meddah et al 2019 IOP Conf. Ser.: Mater. Sci.

Get PriceEmail Inquiry

Quality Improvement Techniques for Recycled Concrete ...

The main problem in using recycled concrete aggregate (RCA) as a construction material is due to the weak adhered mortar which usually has higher porosity and water absorption. It also has lower strength compared to natural aggregate (NA), and it often forms weak interfacial transition zones in the recycled aggregate concrete (RAC). These weak ...

Get PriceEmail Inquiry

(PDF) Effect of Recycled Aggregate on Mechanical and ...

Recycled aggregate is a term used to describe crushed concrete, mortar, bricks or asphalt from construction debris that is reused in other building projects.

Get PriceEmail Inquiry

Influence of Quality and Replacement Rate of Recycled ...

Compared with natural aggregate, the content of hardening cement in recycled aggregate is larger, which leads that the water absorption of recycled aggregate is larger and its performance such as robustness is poorer. And the engineering field pays much attention to the problem of the recycled fine aggregate which can be used in the durability requirements of recycled concrete or not.

Get PriceEmail Inquiry

The Environmental Impact of Recycled Concrete

4. Characteristics of recycled concrete aggregate The international literature provided numerous works at recycled concrete aggregate area, mainly from the beginning of 1980 (Hansen, 1992). The topics most investigated are durability and mechanical characteristics. The quality of aggregates made of recycled concrete affects directly the

Get PriceEmail Inquiry

Effect of Low-Quality Recycled Concrete Aggregate on ...

Aug 08, 2020  Recycled concrete aggregate (RCA) is the result of the demolition of concrete structures and pavements. Using RCA to replace quarried aggregates in paving projects is one way to utilize the millions of tons of concrete waste that is produced annually and landfilled.

Get PriceEmail Inquiry

Effect of Recycled Aggregate and Steel Fibers on the ...

Aug 07, 2021  The effect of recycled concrete aggregate (RCA) on the engineering and durability properties of alkali activated slag concrete (AASC) under ambient curing state

Get PriceEmail Inquiry

Experimental Study of Compressive Properties and ...

recycled aggregate determine whether recycled aggregate concrete can be used in ... damage due to their poor construction quality. Researchers ... risks that can affect human health.Galvin et al ...

Get PriceEmail Inquiry

Effect of Mineral Admixtures on the Performance of Low ...

May 25, 2021  class M using recycled aggregate class L in which a decrease in compressive strength and an increase in drying shrinkage was observed [5]. In this study, to promote the use of low-quality recycled aggregate for structural concrete, the effect of multi-purpose mineral admixtures such as FA and BFS on the performance of the RAC class M was examined.

Get PriceEmail Inquiry

EFFECT OF RECYCLED AGGREGATE QUALITY ON

The effect of recycled aggregate quality on the variation of compressive strength was examined at several water-cement ratios. The variation of recycled aggregate concrete strength was higher than that for normal aggregates but still fellbelow the JSCE-specified limit, except when combining different recycled aggregate types.

Get PriceEmail Inquiry

Effect of Recycled Aggregate Quality on the Bond Behavior ...

To more thoroughly understand the effects of the recycled aggregate quality on the bond behavior of the interaction between the recycled aggregate concrete and the steel rebar, different water-to-cement ratios (0.30, 0.45, 0.60, and 0.75) and different diameters of the

Get PriceEmail Inquiry

Effect of Low-Quality Recycled Concrete Aggregate on ...

Aug 08, 2020  Recycled concrete aggregate (RCA) is the result of the demolition of concrete structures and pavements. Using RCA to replace quarried aggregates in paving projects is one way to utilize the millions of tons of concrete waste that is produced annually and landfilled.

Get PriceEmail Inquiry

Evaluation of Recycled Concrete for Use as Aggregate in ...

This study evaluated the use of recycled concrete as coarse aggregate in new concrete pavements. Recycled concrete aggregate (RCA) produced from demolished pavements in three geographically-dispersed locations in Washington state were used to perform testson aggregate characte ristics, fresh concrete propertiesand hardened concrete properties.

Get PriceEmail Inquiry

Effect of Recycled Coarse Aggregate Type on Concrete ...

May 13, 2014  Using multilinear correlation analysis, the influences of these aggregate characteristics and other parameters on the properties of recycled aggregate concrete were evaluated. The results showed that the performance of the concrete containing each type of RA was largely influenced by the aggregate nature and quality, in addition to attached ...

Get PriceEmail Inquiry

Effect of fine recycled aggregate on the strength and ...

May 19, 2021  Fumoto T, Yamada M (2002) Influence of the quality of recycled fine aggregate on properties of concrete. Memoris of Faculty of Engineering (Symposium paper) 43:97–103 Osaka: Osaka City University. Geng J, Sun J (2013) Characteristics of the carbonation resistance of recycled fine aggregate concrete. Constr Build Mater 49:814–820

Get PriceEmail Inquiry

Effect of Recycled Aggregates on Previous Concrete ...

Sep 01, 2019  Effect of Recycled Aggregates on Previous Concrete Properties. Mohammed Seddik Meddah 1, Maryam Al Oraimi 1, Abdul Wahid Hago 1 and Khalifa Al Jabri 1. Published under licence by IOP Publishing Ltd IOP Conference Series: Materials Science and Engineering, Volume 603, Issue 3 Citation Mohammed Seddik Meddah et al 2019 IOP Conf. Ser.: Mater. Sci.

Get PriceEmail Inquiry

Influence of Quality and Replacement Rate of Recycled ...

Compared with natural aggregate, the content of hardening cement in recycled aggregate is larger, which leads that the water absorption of recycled aggregate is larger and its performance such as robustness is poorer. And the engineering field pays much attention to the problem of the recycled fine aggregate which can be used in the durability requirements of recycled concrete or not.

Get PriceEmail Inquiry

The Environmental Impact of Recycled Concrete

4. Characteristics of recycled concrete aggregate The international literature provided numerous works at recycled concrete aggregate area, mainly from the beginning of 1980 (Hansen, 1992). The topics most investigated are durability and mechanical characteristics. The quality of aggregates made of recycled concrete affects directly the

Get PriceEmail Inquiry

Treatment Methods for the Quality Improvement of Recycled ...

Jan 24, 2021  Ryu J S. An Experimental Study on the Effect of Recycled Aggregate on Concrete Properties[J]. Mag. Concr. Res., 2002, 54(1): 7–12. CAS Article Google Scholar [19] Xiao J Z, Li W G, Sun Z H, et al. Properties of Interfacial Transition Zones in Recycled Aggregate Concrete Tested by Nanoindentation[J]. Cem. Concr.

Get PriceEmail Inquiry

Effect of Recycled Coarse Aggregate on Concrete Properties ...

Abstract. This research was conducted with the use of recycled aggregate as modification. In terms of the use of recycled aggregate, the percentage of recycled aggregate should be determined because the strength of concrete would not be obtained by the high percentage of recycled aggregate.The scope of study is about comparison between recycle coarse aggregate and natural aggregate in terms of ...

Get PriceEmail Inquiry

Effect of Recycled Aggregate and Steel Fibers on the ...

Aug 07, 2021  The effect of recycled concrete aggregate (RCA) on the engineering and durability properties of alkali activated slag concrete (AASC) under ambient curing state

Get PriceEmail Inquiry

Effect of recycled aggregate quality on the bond behavior ...

This study aims to promote the application of recycled aggregate by investigating the effects of recycled aggregate quality (i.e., water absorption and the number of fine particles) classified by the Japanese Industrial Standards (JIS) on material properties, mechanical properties, and shear behavior of RC beams with recycled aggregate.",

Get PriceEmail Inquiry

Experimental Study of Compressive Properties and ...

recycled aggregate determine whether recycled aggregate concrete can be used in ... damage due to their poor construction quality. Researchers ... risks that can affect human health.Galvin et al ...

Get PriceEmail Inquiry