Evaluation of precoated recycled concrete aggregate for

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Evaluation of pre-coated recycled concrete aggregate for ...

Mar 01, 2012  Highlights We produce pre-coated recycled concrete aggregate (PCRCA). It can ease aggregate shortage and reinforce the strength. The optimum coating thickness is 0.25 mm. The PCRCA have highly pores contents, water absorption and asphalt contents. The tests of HMA with PCRCA are satisfied by the specification requirements.

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Evaluation of pre-coated recycled aggregate for concrete ...

Jun 01, 2013  Highlights The physical performance of modified recycled aggregate was satisfied with specification requirement. Too much or less coating paste both reduced aggregate crushing strength and optimum coating thickness was 0.035 mm. Sulfoaluminate cement paste with fly ash can improve the mechanical property and durability of recycled concrete or mortar.

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Evaluation of pre-coated recycled concrete aggregate for ...

Highlights We produce pre-coated recycled concrete aggregate (PCRCA). It can ease aggregate shortage and reinforce the strength. The optimum coating thickness is 0.25 mm. The PCRCA have highly pores contents, water absorption and asphalt contents. The tests of HMA with PCRCA are satisfied by the specification requirements.

Get price

Evaluation of pre-coated recycled aggregate for concrete ...

Zhao et al. (2013) precoated recycled concrete aggregates with cementitious pastes with different components and w=b ratios. They reported that the f cm of RAC mixes containing recycled concrete ...

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Evaluation of pre-coated recycled concrete aggregate for ...

Abstract. Recycled concrete aggregate (RCA) used for pavement construction can ease aggregate shortage problem and reduce environmental pollution. The mechanical properties of

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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.

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Performance Evaluation of Concrete Manufactured with ...

Keywords: reclaimed fine aggregate, precoated aggregate, slag, durability In this study, fly ash and ground granulated blast-furnace slag were applied over fine recycled aggregates in layers of 0.2 and 0.4 mm. We then evaluated the resulting concrete with regard to freshness, mechanical properties, and durability. The fine recycled aggregates ...

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Evaluation of Recycled Concrete, Open-Graded Aggregate ...

92 TRANSPORTATION RESEARCH RECORD 1345 Evaluation of Recycled Concrete, Open-Graded Aggregate, and Large Top-Size Aggregate Bases RICHARD D. BARKSDALE, SAMIR Y. ITANI, AND TERRYE. SWOR Eight unstabilized aggregate ba es were investigated: three re

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EVALUATION OF RECYCLED CONCRETE AGGREGATE

EVALUATION OF RECYCLED CONCRETE AGGREGATE PRODUCED FROM DEMOLISHED RUNWAY PANELS AS A SUBSTITUTE FOR COARSE AGGREGATES IN NEW PORTLAND CEMENT PAVEMENTS Abstract by Timothy Charles Spry, M.S. Washington State University July 2013 Committee Co-Chairs: David McLean and Haifang Wen

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Strength and Durability Evaluation of Recycled Aggregate ...

Strength and Durability Evaluation of Recycled Aggregate Concrete. Download. Related Papers. My Research Papers. By Suvash C Paul. EFFECT OF WASTE MATERIAL ON PROPERTIES OF CONCRETE MIX: A REVIEW STUDY. By Akshay Chandel. Short and long-term behavior of structural concrete with recycled concrete aggregate.

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Evaluation of recycled concrete aggregate in asphalt mixes ...

Jan 15, 2018  This paper investigates the feasibility of using recycled concrete aggregate (RCA) as a replacement to the natural aggregates (NAs) in hot mix asphalt (HMA). RCA was collected from two different sources (new concrete cubes used for quality control testing during construction, and old demolished building) to investigate the impact of material degeneration on the engineering properties

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Evaluation of Recycled Concrete, Open-Graded Aggregate ...

92 TRANSPORTATION RESEARCH RECORD 1345 Evaluation of Recycled Concrete, Open-Graded Aggregate, and Large Top-Size Aggregate Bases RICHARD D. BARKSDALE, SAMIR Y. ITANI, AND TERRYE. SWOR Eight unstabilized aggregate ba es were investigated: three re

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Materials Free Full-Text Performance Evaluation of the ...

Currently the investigation on recycled cement concrete aggregate has been widely conducted, while the understanding of the recycled polymer concrete aggregate is still limited. This study aims to fill this knowledge gap through the experimental investigation on mechanical and durability performance. Specifically, the remolded polyurethane stabilized Pisha sandstone was collected as the ...

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Carbonation degree evaluation of recycled aggregate ...

Jan 01, 2021  The water in the recycled aggregate provides an internal curing environment for the cement paste [30,51] because the recycled aggregate absorbs some of the total mixing water. Thus, different recycled aggregates offer different amounts of water for cement hydration, and if the same effective water/cement ratio is used during mixture preparation ...

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(PDF) Evaluation of recycled concrete aggregate in asphalt ...

The objective of this research was to assess the possibility of using recycled concrete aggregate (RCA) in asphalt mixtures. The experimental research included 10 asphalt mixtures with partial ...

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Laboratory and Field Evaluation of Lightweight Aggregates ...

13. Lightweight aggregate "A" is considered equal to precoated limestone for seal coat and surface treatment work. Laboratory results indicate that several of the other lightweight aggregates under study are also acceptable for this and similar service-Re commendations Based on the laboratory and field evaluation work performed during the

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Utilization of Recycled Concrete Aggregates in Stone ...

Dec 17, 2014  Recycled concrete aggregate (RCA) is considered as one of the largest wastes in the entire world which is produced by demolishing concrete structures such as buildings, bridges, and dams. It is the intention of scientists and researchers, as well as people in authority, to explore waste material recycling for environmental and economic advantages.

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Performance Evaluation Of Recycled Aggregate Used In Concrete

There were total of sixth batches of concrete mixes, consists of every 20 % increment of recycled aggregate replacement from 0 % to 100%.Moreover, 100 % of recycled aggregate mix batches included, different water/cement ratio of 0.5,0.6 and 0.7. The workability of concrete considerably reduced as the amount of recycled aggregate increased.

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Machine Learning-Based Evaluation of Shear Capacity of ...

Recycled aggregate concrete (RAC) is a promising solution to address the challenges raised by concrete production. However, the current lack of pertinent design rules has led to a hesitance to accept structural members made with RAC. It would entail even more difficulties when facing application sce

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Sensors and Materials

Keywords: reclaimed fine aggregate, precoated aggregate, slag, durability In this study, fly ash and ground granulated blast-furnace slag were applied over fine recycled aggregates in layers of 0.2 and 0.4 mm. We then evaluated the resulting concrete with regard

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Study on Plastic Coated Overburnt Brick Aggregate as an ...

Aug 08, 2016  There are different places in India where natural stone aggregates are not available for constructional work. Plastic coated OBBA can solve the problem of shortage of stone aggregate to some extent. The engineers are always encouraged to use locally available materials. The present investigation is carried out to evaluate the plastic coated OBBA as an alternative material for bituminous road ...

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Pore-structures and durability of concrete containing pre ...

Jan 30, 2018  Research , on the unit weight of coarse recycled concrete aggregate (CRCA) crushed from large batches of waste concrete has revealed that the unit weight of CRCA with a saturated surface dry (SSD) specific gravity of 2.29–2.51 ranges from 1120 kgf/m 3 to 1430 kgf/m 3 whereas the SSD specific gravity of the fine recycled concrete aggregate ...

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

such alternative is to incorporate recycled concrete as aggregate in new portland cement concrete pavements. According to a report from Iowa State University, recycled concrete aggregates (RCA) can reduce costs, environmental impacts, and project delivery time when used in concrete pavements (Garber, et al., 2011).

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Evaluation of Recycled Concrete Aggregate Performance in ...

In total, 48 beam-end specimens were tested that incorporated three bonded lengths (125, 375, and 450 mm) and four concrete compressive strengths (30, 40, 50 and 60 MPa). Based on the results of the aggregate testing it was found that concrete incorporating pre-soaked (i.e., fully saturated) RCA as a 100% replacement for natural aggregate had ...

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Laboratory evaluation of treated recycled concrete ...

Apr 18, 2019  Recycled Concrete Aggregate (RCA) is considered to be a potential substitute for natural aggregates in asphalt mixtures. Despite some contradictory results achieved by researchers, it is believed that RCA treatment can improve quality of recycled asphalt mixes considerably. In this research, a two-stage treatment was applied on coarse RCA materials in order to improve their

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Strength and Durability Evaluation of Recycled Aggregate ...

May 14, 2015  This paper discusses the suitability of producing concrete with 100 % recycled aggregate to meet durability and strength requirements for different applications. Aggregate strength, gradation, absorption, specific gravity, shape and texture are some of the physical and mechanical characteristics that contribute to the strength and durability of concrete.

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Strength and Durability Evaluation of Recycled Aggregate ...

gregate properties and Phase 2 focuses on the evaluation of concrete mixtures utilizing 100 % recycled aggregates. Figure 2 summarizes the experimental program and list of physical and mechanical properties included in the investigation. All results were compared to that of a control mix prepared with virgin aggregate (crushed lime stone). In

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Concrete with Recycled Aggregate: Evaluation of Mechanical ...

In this paper, the effect of the source of recycled coarse aggregate on the properties of concrete is investigated. The tests were conducted on concrete made from three sources of recycled ...

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Evaluation of the Durability Properties of Engineered ...

This study showed that the use of recycled concrete as aggregate up to 100% replacement of the silica sand resulted in about a 40% reduction in drying shrinkage. However, chloride ion penetration, permeable voids, and water absorption of ECC mixtures incorporating 100% recycled concrete as aggregate increased by 19%, 28%, and 34%, respectively.

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[PDF] Utilization of Recycled Concrete Aggregates in Stone ...

Recycled concrete aggregate (RCA) is considered as one of the largest wastes in the entire world which is produced by demolishing concrete structures such as buildings, bridges, and dams. It is the intention of scientists and researchers, as well as people in authority, to explore waste material recycling for environmental and economic advantages.

Get price

[PDF] Influence of fine recycled concrete aggregates on ...

Abstract Fine recycled concrete aggregates (FRCA) also called recycled sand, having particle sizes smaller than 5 mm, are essentially composed of mortar and hardened cement paste. Therefore they induce a large water demand which makes them hard to recycle into mortar and concrete. In this paper, the properties of mortars containing FRCA have been studied, including fresh properties, mechanical ...

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Standards Specifications for Transportation Materials and ...

R 73-16 (2020) Evaluation of Precast Concrete Drainage Products 2 (June) R 82-17 Pipe Joint Selection for Highway Culvert and Storm Drains 2 (June) R 93-19 Service Life Determination of Corrugated HDPE Pipes Manufactured with Recycled

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MDOT - Materials

SPR-1192 - Petrographic Analysis of Crushed Stone Coarse Aggregate: Gogebic Range Ski Corp. Pit No. 27-74 ; SPR-1197 - Static and Dynamic Properties of Anchor Bolts for Sign Supports ; SPR-1203 - Further Evaluation of Black Base and Aggregate Base Construction ( M-20 and M-66) SPR-1205 - ASTM E501 Test Tire Correlation, B. F. Goodrich vs. McCreary

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DeepDyve - Unlimited Access to Peer-Reviewed Journals

DeepDyve is the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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Utilization of recycled concrete aggregates in stone ...

Jan 01, 2014  In another study, the possibility of using precoated RCA for hot mix asphalt was evaluated. 0.25, 0.45, and 0.65 mm of slag cement paste was used to coat the recycled concrete aggregates. Test results showed that the thickness of 0.25

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EVALUATION OF 1977 ASPHALT CONCRETE SPRINKLE

The sprinkle aggregates were precoated at about 2500F with the same asphalt cement that was used in the surface course mix. Both drum mixers and batch plants were used for the precoating. The amount of asphalt that provided the desired precoating was approximately 1% of the dry weight for conventional aggregate and 2% for lightweight aggregate.

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