Home Products Case About Us Contact Us
···

keene rc rock Crusher how many tonnes per hour

average density of recycled concrete aggregate

2016-10-20  Recycled concrete aggregate was found to be acceptable type of aggregate as a substitute for aggregate in CIR mixtures. CS has high density and hardness . The average specific gravity of CS is about Density (g/cm3) 3.163.87 Water absorption 0.150.55 Hardness 67

Get Price

PROPERTIES OF RECYCLED AGGREGATE CONCRETE

2015-2-18  density of recycled aggregate was on the average by 10% lower compared to the bulk density of natural aggregates [6,9,10]. 2.5. Crushing and abrasion resistance Mechanical properties of recycled aggregate are primarily dependent on the quality of the original cement mortar present in the aggregate, and also, as

Get Price

Investigations on Concrete with Recycled Concrete as ...

2016-11-28  Recycled concrete aggregate (RCA) is often an economic alternative to new aggregates. In the construction sector, ... concrete because of low density and high porosity. The average 28 days cube compressive strength are satisfying the requirements of the values given in table-1 of IS 12727-1989. Hence porous concrete can be suggested for

Get Price

Performance of Recycled Aggregate Concrete

2009-9-1  aggregate concrete ,the slump test was about 1.0cm slump for 60 % coarse recycled aggregate concrete and increases as the percent of recycled aggregate decreases . The compressive strength of recycled aggregate concrete with 60 % recycled aggregate, is about 76 % of natural aggregate concrete. The compressive strength increases as the

Get Price

Density of Aggregate - Bulk and Relative Density - Civil ...

2021-8-23  The approximate bulk density of aggregate that is commonly used in normal-weight concrete is between 1200-1750 kg/m3 (75-110 lb/ft3). Here, the Standard test method for determining the bulk density of aggregates is given in ASTM C 29 (AASHTO T 19). Relative Density of Aggregate

Get Price

Some mechanical properties of normal and recycled ...

2021-8-24  test was conducted on fresh concrete. The results showed that the slump of Recycled Aggregate Concrete (RAC) was less than that of Normal Aggregate Concrete (NAC). For class C20/25, the average compressive strength, rebound hammer, and density of the RAC were 26%, 17%, and 16.6% less, respectively, than those of NAC. The splitting

Get Price

The use of recycled aggregate in concrete in Hong Kong ...

2007-5-1  The highest concrete grade using recycled aggregate is grade C35 as summarized in Table 2. The target slump is 100 mm but in some cases, 75 mm slump concrete is also used. The project started in April 2003 and a total volume of around 13,000 m 3 of concrete using recycled aggregate has been used as shown in Table 3.

Get Price

An Overview of Recycled Concrete Aggregate ETM Recycling

2020-9-27  Recycled concrete aggregate is the term used to describe the material produced from crushed construction and demolition waste, primarily consisting of concrete but also including aggregate materials such as sand, gravel, slag, and crushed stones. Recycled aggregates are only classified as recycled concrete aggregates (RCA) when the primary ...

Get Price

Influence of the amount of recycled coarse aggregate in ...

2012-1-1  The major difference between natural aggregate and recycled coarse aggregate (RCA) is the adhered mortar at the surface of the RCA. It is a porous material, exhibits lower bulk density and saturated surface dry density, 1290–1470 kg/m 3 and 2310–2620 kg/m 3 respectively.

Get Price

Strength and Durability Evaluation of Recycled Aggregate ...

2015-5-14  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.

Get Price

Recycled Aggregates for Green Concrete

2017-10-5  The average compressive strengths achieved for the Recycled Aggregates approximately 83.0Concrete wasmPa, the highest ever recorded compressive strength from the concrete manufactured using 100% recycled course aggregates. Keywords: Recycled aggregates concrete, high strength, packing density . 1.0 Introduction

Get Price

PROPERTIES OF RECYCLED AGGREGATE CONCRETE

2015-2-18  density of recycled aggregate was on the average by 10% lower compared to the bulk density of natural aggregates [6,9,10]. 2.5. Crushing and abrasion resistance Mechanical properties of recycled aggregate are primarily dependent on the quality of the original cement mortar present in the aggregate, and also, as

Get Price

The Use of Recycled Concrete Aggregate in a Dense

2020-1-3  The Use of Recycled Concrete Aggregate in a Dense Graded Aggregate Base Course FINAL REPORT ... TDR (ASTM D6780), as a non-nuclear means for determining the dry density and moisture content of granular base and subbase aggregates during quality control. ... This increased the permeability to levels considered average, while still providing ...

Get Price

Crushed Concrete Aggregates - Properties and Uses of ...

Density. The density of crushed concrete aggregate is smaller than natural aggregate density. 4. Water Absorption. Water absorption of recycled aggregate is greater than of natural aggregate. It is one of the most significant properties that distinguish recycled aggregate from raw aggregates.

Get Price

Investigations on Concrete with Recycled Concrete as ...

2016-11-28  Recycled concrete aggregate (RCA) is often an economic alternative to new aggregates. In the construction sector, ... concrete because of low density and high porosity. The average 28 days cube compressive strength are satisfying the requirements of the values given in table-1 of IS 12727-1989. Hence porous concrete can be suggested for

Get Price

Average EPD for Aggregates - SUGB

2020-5-5  Average bulk density (moisture content 2%) 1.39 t/m 3 Bulk density range 1.30 to 1.44 t/m 3 Loosening factor L 0.89 Average storage density 1.56 t/m 3 Storage density range 1.46 to 1.62 t/m 3 Particle size Designation (4/x) mm Table 6: Technical data of recycled aggregate

Get Price

(PDF) Mix Design of Recycled Aggregate Concrete Using ...

The results show that the 28-day cube and cylinder compressive strength, and the indirect shear strength of recycled aggregate concrete were on the average 90% of those of natural aggregate ...

Get Price

RECYCLED AGGREGATE CONCRETE (RAC) -

Date written: 02/06/2009 . RECYCLED AGGREGATE CONCRETE (RAC) - COMPARATIVE ANALYSIS OF EXISTING SPECIFICATIONS. by Paulo Gonçalves1 and Jorge de Brito2. 1Master in Civil Engineering, Instituto ...

Get Price

Recycled Concrete as Aggregate for Structural Concrete ...

2015-2-24  Recycled concrete aggregate (RCA) is generally produced by two-stage crushing of demolished concrete, and screening and removal of contaminants such as reinforcement, paper, wood, plastics and gypsum. Concrete made with such recycled concrete aggregate is called recycled aggregate concrete (RAC). The main purpose of this work is to determine

Get Price

Summary of Testing of Recycled Crushed Concrete

Evaluation of Recycled Concrete Dense-Graded Aggregate Base An enormous quantity of testing indicates that re­ cycled crushed concrete consistently complies with all the parameters required for excellent long-term performance. The material is well graded, it

Get Price

Crushed Concrete Aggregates - Properties and Uses of ...

Density. The density of crushed concrete aggregate is smaller than natural aggregate density. 4. Water Absorption. Water absorption of recycled aggregate is greater than of natural aggregate. It is one of the most significant properties that distinguish recycled aggregate from raw aggregates.

Get Price

Average EPD for Aggregates - SUGB

2020-5-5  Average bulk density (moisture content 2%) 1.39 t/m 3 Bulk density range 1.30 to 1.44 t/m 3 Loosening factor L 0.89 Average storage density 1.56 t/m 3 Storage density range 1.46 to 1.62 t/m 3 Particle size Designation (4/x) mm Table 6: Technical data of recycled aggregate

Get Price

MECHANICAL PROPERTIES OF RECYCLED AGGREGATE

2016-10-14  to normal aggregate concrete [2]. Literature reports [3, 4] show that the performance of recycled concrete material is affected by the cement mortar bonding the aggregate particles. This residual mortar change aggregate water absorption and density and can have side effects on concrete

Get Price

RECYCLED AGGREGATE CONCRETE (RAC) -

Date written: 02/06/2009 . RECYCLED AGGREGATE CONCRETE (RAC) - COMPARATIVE ANALYSIS OF EXISTING SPECIFICATIONS. by Paulo Gonçalves1 and Jorge de Brito2. 1Master in Civil Engineering, Instituto ...

Get Price

Properties of recycled concrete aggregate under

2020-4-10  recycled concrete aggregate in new concrete production appears to be an effective utilization of concrete waste. However, the strength of new concrete produced using recy-cled concrete aggregate needs to be evaluated before their use in structures. Many researchers studied the mechanical behavior of recy-cled concrete coarse aggregates [1–9].

Get Price

Development Of Guide Specifications For Recycled ...

2008-7-25  Keywords: Concrete, guidelines, recycled aggregate, specifications. 1 INTRODUCTION The development a national Guide specification document on recycled concrete and masonry aims at providing engineers with product specification information and the tools required for conventional design with graded recycled construction and

Get Price

Concept of Green Concrete Using Construction

2017-2-8  marketing area, but recycled aggregate have limited product mixes and the lower product mixes may restrain the market. Density The density of the recycled concrete aggregate is lower than natural aggregate. Density of recycled aggregate is lower than the fresh aggregate because of the porous and less dense residual mortar

Get Price

Performance of Pervious Concrete with Recycled Concrete ...

2020-8-19  Methodology. Recycled concrete aggregates are generally more porous than the primary coarse aggregates. The main property of pervious concrete is its permeability, so the part of fine aggregate can be reduced and the part of natural aggregate can be replaced with recycled concrete aggregate to enhance permeability without much affecting the strength of the concrete.

Get Price

(PDF) The Effects of Recycled Aggregates on Compressive ...

The optimal mixture of recycled aggregate concrete is obtained as water cement ratio of 0.5, volume ratio of recycled coarse aggregate of 42.0%, 100% replacement of river sand, 0% crushed brick ...

Get Price