CALL US

+86 17838360708

experiment of technique of recycle of aggregate

experiment of technique of recycle of aggregate

Experimental Investigation of Recycle Concrete Aggregate

recycled aggregate, recycled aggregate treated with HCl and H2SO4, recycled aggregate obtained after scrubbing treatment, and heating and scrubbing treatment. The physical and mechanical properties of these aggregates, and their strength and performance of recycled aggregate

get price

Experimental Case Study of Recycled Aggregate Concrete ...

Aggregate Recycled Asphalt Aggregate (%) A RAP00 100 0 B RAP25 75 25 C RAP50 50 50 D RAP75 25 75 E RAP100 0 100 6. FINDINGS OF THE STUDY A series of tests are conducted in the laboratory for evaluation of various properties of material, relevant for the study. All test have been conducted as per the guidelines of ...

get price

Experimental study on strength behaviour of recycled ...

conducted an experiment on “Strength evaluation of recycled-aggregate concrete by in-situ tests”. The compressive strength of concrete was determined at various ages up to 90 days using 100mm cubes. Based on the results, they concluded that for a given water- cement ratio, the recycled-aggregate concrete showed a ...

get price

Experimental investigation on properties of recycled ...

Jul 10, 2019  Analysis results demonstrated the effectiveness of reducing the 8.95% water absorption value of the untreated recycled aggregate to 0.84% after the optimization process of BMM. Then, seven concrete specimens including 0-20-40-60% recycled aggregate (RA) and improved recycled aggregate (RA-i) mixes produced in the framework of the experimental ...

get price

Experimental Study on High Strength Concrete with Recycled ...

Figure 1.1: Recycled Aggregate 1.2 Historical Background The applications of recycled aggregate in the construction areas are wide and they had been used long time ago. Wilmot and Vorobieff (1997) stated that recycled aggregate have been used in the road industry for the last 100 years in Australia [2].

get price

The Optimum Production Method for Quality Improvement of ...

Jul 29, 2016  The results of the abrasion experiment performed to determine the optimum conditions for the manufacture of recycled fine aggregates that satisfy the quality standards showed that an abrasion time of 8.57 min and coarse aggregate ratio of over 1.5 have been the optimum conditions for producing aggregates with the target oven-dry density of 2460 ...

get price

Research on Composite Strengthening Nano-Technique of ...

The work described in this document forces on composite strengthening technique of recycled aggregate. In this experiment, recycled aggregates are soaked in different types and different concentrations of nanomaterials to strengthen. This research estimates the strengthening effects by comparing the properties of recycled aggregate soaked in different materials, and proves that the

get price

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 price

Effect of recycled aggregate treatment techniques on the ...

Dec 20, 2020  The utilization of recycled aggregates (RA) in new construction has been promoted by many countries but the structural use of recycled aggregate concrete (RAC) is limited owing to inferior durability performance. The focus of this work is to study the effect of different RA treatment techniques on the durability properties of RAC.

get price

Recycled Aggregates - Portland Cement Association

Using recycled aggregates instead of extracted aggregates would qualify as post-consumer. Because concrete is an assembly, its recycled content should be calculated as a percentage of recycled material on a mass basis. Credit can also be obtained for Construction Waste Management. It is awarded based on diverting at least 50 percent by mass of ...

get price

Report of Recycled Concrete Aggregates

Aug 08, 2019  Report of Recycled Concrete Aggregates. 1. Strength and Durability Characteristics of Recycled Concrete Aggregates Dept. of Civil Engineering, Viswajyothi College of Engineering and Technology, Vazhakulam 1 1. INTRODUCTION Concrete is the premier construction material across the world and most widely used in all types of civil engineering works.

get price

MECHANICAL PROPERTIES OF RECYCLED AGGREGATE

istics of recycled aggregate concretes vary considerably de-pending upon the quality and replacement level of recycled aggregate used. In this experiment, recycled aggregate pro-duced by advanced recycling method was used. The replace- ment level of aggregate was set as the major variable, so that

get price

The Effect of Mixing Technique and Prolonged Mixing Time ...

Abstract: The experiment aims to test the triple mixing (3M) technique to produce the concrete with recycled concrete aggregate (RCA). Then, the impact prolonged mixing, representing the influence of delivery and discharge time in praxis, is analysed by the change in strength properties.

get price

Experiment study on drying shrinkage deformation of ...

Apr 24, 2011  Abstract: Drying shrinkage deformation is one of the most important reasons which causes cracking of concrete materials. Mix design of C30 natural aggregate concrete(NAC) is used as reference, the experiment of drying shrinkage considering the influence of recycled aggregate replacement ratio and mixing amount of fly ash, water reducer, and expansive agent was made.

get price

Mechanical Properties Of Recycled Aggregates Concrete ...

The recycled coarse aggregate will invariably have lower specific gravity and higher absorption than the original aggregate, due to the presence of cement paste in the recycled aggregate. The compressive strengths of recycled aggregate concrete are lower than those of the same mix designs made with virgin aggregate.

get price

Meso-numerical Experiment of Recycle Concrete Based on ...

Based on the surface trimming technique,a gradually Delaunay tetrahedron division scheme is proposed to mesh the concrete specimen which can be taken as an inhomogeneous multi-phase composite consisting of mortar matrix,aggregates and the bond between them in mesoscopic.By this scheme,the sphere or ellipsoid aggregate can be meshed easily and the amount of elements generated is far less

get price

Experimental assessment of microwave heating assisted ...

Jun 30, 2021  Microwave assisted concrete recycling is highlighted by a large number of research groups all over the world due to its potential for significant process benefit. In this paper, systematic experiments are established to study the microwave heating and aggregate recycling of dried and saturated concrete, respectively, investigating the effect of moisture content on heating results.

get price

Recovery of high quality aggregate from concrete waste ...

The quality of recycled aggregate is important solution of recycling aggregate. The recycle speed is also important solution. So, it is necessary to collect a high-quality recycled coarse aggregate quickly. At the pulsed discharge method is a reproduction speed of 1 ton per one hour. Because, the pulsed discharge method conducted the

get price

MIT students fortify concrete by adding recycled plastic ...

Oct 25, 2017  Going forward, the team is planning to experiment with different types of plastics, along with various doses of gamma radiation, to determine their effects on concrete. For now, they have found that substituting about 1.5 percent of concrete with irradiated plastic

get price

Laboratory Investigation on the Shrinkage Cracking of ...

Apr 12, 2019  2.1.1. Recycled Coarse Aggregates . In this experiment, the coarse aggregates were recycled from waste C40 concrete, which was crushed and cleaned manually. In order to remove oversize aggregates, the recycled coarse aggregates needed to be sieved before mixing. The maximum size of recycled coarse aggregates was 25 mm.

get price

The Experimental Study of the Utilization of Recycling ...

The article shows a case study as to whether the thermal and mechanical recycling of concrete is suitable for concrete debris from the demolition of structural elements of a 30-year-old industrial hall. The experiment included 10 series of new composites made from heated recycled concrete aggregate (HRCA) subjected to different variants of heat treatment and one additional control series with ...

get price

MECHANICAL PROPERTIES OF RECYCLED AGGREGATE

istics of recycled aggregate concretes vary considerably de-pending upon the quality and replacement level of recycled aggregate used. In this experiment, recycled aggregate pro-duced by advanced recycling method was used. The replace- ment level of aggregate was set as the major variable, so that

get price

PAPER OPEN ACCESS The impact of aggregates from

Aggregates: natural aggregates NA and recycled aggregates RA (RCA and RBA) of D max = 16mm. As for RA, 0/32 fraction was obtained from a company dealing with CDW treatment (ENVIRONCENTRUM Ltd., Slovakia). Within the experiment, RA was crushed and sorted to standard fractions (4/8 and 8/16).

get price

Effective Recycling of Surface Modification Aggregate ...

complete recycling of the aggregates by recovering the high-quality aggregates, while using a small amount of energy. With the application of this technique, the trade-off relationship during the manufacture of recy-cled aggregates can be overcome, in that the energy consumption is reduced while the quality of the recycled aggregate is ensured.

get price

Experiment Research on Basic Mechanic Property of Recycled ...

The test confects C20, C25, C30, C35 and C40 recycled aggregate concrete, and the percentage of recycled aggregate are 0%, 20%, 30%, 50%, 70% and 100%,the test age of sample are 7d,28d and 56d.Through test, the cube crushing strength,prismatical compressive strength and elasticity modulus of recycled aggregate concrete with different recycled aggregate percentage and different ages are

get price

Evaluation of different treatment techniques in recycled ...

The results of resistance indicate that the new technique of coating the surface of recycled aggregate with pozzolanic dust contributes significantly to better viability and greater resistance to compression and bending. The interfacial transition zone of the concrete with recycled aggregates is benefited with the new technique (2).

get price

Analysis of tensile behavior of recycled aggregate ...

Dec 28, 2020  Recycled concrete aggregate (RCA) was processed from reinforced concrete edge beams sourced from a demolished bridge. This material replaced different ratios of coarse aggregate in a benchmark concrete. The tensile behavior of the developed concrete mixes was characterized via monotonic and cyclic uniaxial tensile tests performed on notched cylinders.

get price

MIT students fortify concrete by adding recycled plastic ...

Oct 25, 2017  Going forward, the team is planning to experiment with different types of plastics, along with various doses of gamma radiation, to determine their effects on concrete. For now, they have found that substituting about 1.5 percent of concrete with irradiated plastic

get price

(PDF) A REVIEW ON THE USE OF POLYETHYLENE TEREPHTHALATE ...

The analyzed effect of PET fibers used in the experiment were recycled and waste plastic, several standard collected from the plastic bottles which were tests like bulk density, air content, considered as the waste products of the workability, and compressive strength, society. ... As such further investigation on containing PET aggregates are ...

get price

Experimental Study on Physical Properties of High Quality ...

The quality of recycled aggregates plays an important role in the performance of RCA. So it is necessary to carry out the experiment of its main physical properties, in order to verify whether the RCA has the characteristic of high quality. A. Water Absorption Experiment For recycled coarse aggregate, water absorption is an

get price

Evaluation on the Mechanical Performance of Low-Quality ...

recycled aggregates generated from concrete waste in Japan, and there have been advances in the recycling system for concrete (Choi et al. 2012). However, low-quality recycled aggregates manufactured by simple processing is a major cause of reduced concrete performance, and low quality is recognized as a factor that hinders the expanded use of ...

get price

Positive results for recycled aggregate use in concrete ...

Nov 25, 2015  However recycled aggregates have some different properties that need to be accounted for when producing recycled aggregates concrete. The objective of this experiment was to study the possibility of using recycled aggregates produced from high quality concrete rejects in concrete structures designed according to common engineering practice and ...

get price

(PDF) Modeling of mechanical properties and durability of ...

Influence of the Crushing Process of Recycled Aggregates on Concrete Properties. By Jorge Brito. Mechanical and durability performance of concrete incorporating fine recycled concrete and glass aggregates. By Kambiz Ramyar. My Research Papers. By Suvash C Paul.

get price