influence of field recycled coarse aggregate on properties of

coarse aggregate conforming to IS383:1970. The recycled aggregate used in the investigation was obtained from the cubes tested in concrete technology laboratory. The strength of parent concrete from which the recycled aggregate was obtained ranged between 20 30 MPa. The physical properties of fine and coarse aggregates are given in table 2.

This work studies the physical and mechanical properties of recycled concrete aggregate (recycled aggregate from concrete waste) and their influence in structural recycled .

Influence of recycled aggregate proportion on performance of recycled pervious concrete: CHEN Shoukai 1,2, LIU Xinfei 1,2, GUO Lei 1,2, WANG Lunyan 1,2: 1. School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou 450045, China;

The aim of this research is to control rheological properties of fresh recycled aggregates concrete with fine and coarse recycled aggregates to limit the negative influence of aggregates on mechanical properties of concrete. Key words: Superplasticizer, recycled aggregate, concrete, workability, viscosity, mechanical strength, grading. 1.

Table V Physical properties of natural coarse aggregate Properties Test result of NCA Moisture content 0% Water absorption % Specific gravity Fineness modulus Crushing value % Impact value % Recycle coarse aggregate The recycled coarse aggregate obtained from the different

Through the experimental research on the use of recycled aggregate and recycled concrete powder, I propose recycled coarse aggregate, recycled powder of various physical and chemical characteristic and the powder mixed with cement slurry mixed with recycled coarse aggregate on the surface of the mechanical properties after treatment.

Influence of Recycled Aggregates on Mechanical Properties of High Performance Concrete Justin Benge, Ivan Ortiz, Jose A. Pena Purdue University Calumet 1. Introduction The Environment Protection Agency (EPA) has estimated that during 1996 the United States produced an estimated 136 millions tons of construction and demolition

and 8% by weight of the coarse aggregate). Particle size distribution (PSD) and specific gravity tests were conducted for the plastic aggregates. The influence of the waste HDPE on the fresh and hardened state properties of the concrete, the workability, compressive and flexural strengths were investigated.

Influence of Amount of Recycled Coarse Aggregates and Production Process on Properties of Recycled Aggregate Concrete. In this study recycled coarse aggregates obtained by crushed concrete were used for concrete production. Four different recycled aggregate concretes were produced; made with 0%, 25%, 50% and of recycled coarse aggregates, respectively. The mix proportions of the 4 concretes .

Mechanical and Durability Properties of Recycled Aggregate Concrete: Effect of Recycled Aggregate Properties and Content. The results indicate that the compressive strength is not the only decisive factor on mechanical and durabilityrelated properties of RACs. It is shown that the properties of different RAC mixes of the same compressive strength are affected by the size and content of the coarse aggregates.

This study focuses on characterizing several recycled concrete aggregate (RCA) sources, developing concrete mixture proportions that incorporate RCA as coarse aggregate, and investigating the effect of coarse aggregate properties on the main mixture proportion parameters [, cement content, water demand, and water–cement (w/c) ratio].

"influence of particle index of coarse aggregate and its influences on properties of asphalt concrete mixtures" anirudh n1,, mohammed ilyas anjum3 1 Post Graduate Student, Dept of ...

Waste concrete used as recycled aggregate to compounding recycled concrete is one of most important ways in the cement mortar grain cohere the surface of recycled aggregate and machine crushes grain scathe to accumulate recycled aggregate being more tiny crack,high porosity,low piling density,great crushing index,high water absorption,which lead to properties of recycled concrete ...

recycled coarse aggregates, strength properties of concrete are decreased to some extent. The basic aim of this research was to investigate the effect of using recycled concrete pieces as coarse aggregate on flexural and tensile strength of concrete. The investigation was carried out by carrying

For this purpose, incorporation of recycled concrete aggregate in concrete products particularly selfcompacting concrete (SCC) for structural and nonstructural application would be significant achievement. In this study the fresh and hardened properties of SCC prepared by substituting natural aggregates (NA) with recycled coarse aggregates (RCA).

aggregate was used as the natural coarse aggregate. The properties of coarse aggregate were analyzed in accordance with the procedure laid down in IS 2386 : 1963 and were presented in Table4. Table4. Properties of Coarse Aggregate Property Value 1 Specific Gravity 2 Water Absorption % 3 Fineness Modulus RECYCLED COARSE AGGREGATE

Jul 06, 2015· Aggregates influence the properties of concrete/mortar such as water requirement, cohesiveness and workability of the concrete in plastic stage, while they influence strength, density, durability, permeability, surface finish and colour in hardened stage. Field Tests for Aggregate 1. Surface Moisture Content Absorption The surface moisture in the aggregate, influences the water cement .

This paper reports the durability properties of Self Compacting Concrete (SCC) made with Recycled Concrete Aggregates (RCA) as partial/full replacement of Natural Coarse Aggregates (NCA). The effect of RCA on fresh properties of SCCs was measured using slump flow test, V .

Results indicated that, partial replacement of (75%) level by recycled coarse. aggregate or recycled fine aggregate was practically possible without impairing the. concrete resistance to sulphate for all SO 3 levels up to ( and %) respectively at all. the ages studied .

As in the case of natural aggregates, when recycled aggregates are used to manufacture structural concrete, the assessment of their physical, mechanical and durable characteristics is a key issue. The different physical and mechanical properties of the recycled coarse aggregate (RCA) are evaluated.

TRB's National Cooperative Highway Research Program (NCHRP) Report 539: Aggregate Properties and the Performance of SuperpaveDesigned HotMix Asphalt examines technical literature available since the conclusion of the Strategic Highway Research Program in 1993 on the impact of the aggregate properties specified by the Superpave mix design method on the performance of hotmix asphalt.

Feb 01, 2011· Influence of recycled aggregates on long term mechanical properties and pore size distribution of... Kou, ShiCong; Poon, ChiSun; Etxeberria, Miren 00:00:00 This paper presents the results of a study of the long term mechanical properties .

Sep 03, 2017· Properties of Aggregates. Approximately 75% of the volume of concrete is occupied by aggregates, so quality of aggregates plays an important role in determining properties of concrete. Aggregates are chemically inert, solid bodies held together by the cement.