effect of aggregate quality on the properties of concrete

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 Aggregate Quality on the Properties of Concrete

In both modes of failure, the quality of aggregate significantly influences the mode of failure of concrete under compression. Another point to be noted is that the porous aggre- gates, such as calcareous and dolomitic limestone aggre- gates, are capable of absorbing a significant amount of water.

Get PriceEmail Inquiry

The Effect of Aggregate Properties on Concrete

the different properties of aggregate have a large impact on the strength, durability, workability, and economy of concrete. These different properties of aggregate allow designers and contractors the most flexibility to meet their design and construction requirements. References 1. Mehta and Monteiro.

Get PriceEmail Inquiry

Effects of Aggregate Properties on Concrete - Size, Grading

May 02, 2017  Effects of aggregate properties on Concrete like 'Shape and surface texture' affects usually the properties of freshly mixed concrete. Angular aggregates increases flakiness or elongation thus reduces workability. Round smooth aggregates require less water and less lubrication and greater workability in a given w/c ratio.

Get PriceEmail Inquiry

EFFECT OF RECYCLED CONCRETE AGGREGATE QUALITY

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.

Get PriceEmail Inquiry

Which properties of aggregate affect the quality of

Although aggregates are most commonly known to be inert filler in concrete, the effects of aggregate properties on Concrete impacts the strength, durability, workability, and economy of concrete.

Get PriceEmail Inquiry

Effect of coarse aggregate quality on the mechanical ...

Mar 01, 2003  The effect of aggregate quality on the compressive strength of concrete was evaluated by testing concrete specimens prepared with CC, DL, QZ and SS aggregates. Fig. 2 shows the variation of compressive strength with age for the concrete specimens prepared with the four types of aggregates selected for this study.

Get PriceEmail Inquiry

Aggregates for Concrete - American Concrete Institute

Aggregate properties significantly affect the workability of plastic concrete and also the durability , strength, thermal properties, and density of hardened concrete. This Bulletin describes types of aggregates normally used in concrete, aggregate properties affecting performance of the concrete, tests used to measure aggregate properties, and

Get PriceEmail Inquiry

The influence of aggregate type on the strength and ...

Jan 15, 2015  These results were plotted against compressive strength and it was concluded that the impact of aggregate type on the elastic modulus of concrete at various strengths was very pronounced, with lower stiffness aggregates such as sandstone producing concrete with a significantly lower elastic modulus for all concrete strengths.

Get PriceEmail Inquiry

Effect on recycled aggregate on concrete properties ...

They reported that use of recycled aggregates up to 30% doesn't affect the functional properties of concrete. Akbari et al. (2011), used various proportions of recycled aggregates in concrete and...

Get PriceEmail Inquiry

Effect of Aggregate Quality on the Properties of Concrete

Effect of Aggregate Quality on the Properties of Concrete Vol. 3.127 2.2 Casting of concrete specimens Concrete mixtures were prepared with cement content of 370 kg/m3, an effective w/c ratio of 0.40 and a coarse-to-fine aggregate ratio of 1.62.

Get PriceEmail Inquiry

HOW AGGREGATE PROPERTIES AFFECTS CONCRETE PROPERTIES ...

Feb 15, 2019  INFLUENCE OF AGGREGATE PROPERTIES ON CONCRETE. 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.

Get PriceEmail Inquiry

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

The Effects of Aggregates Characteristics on the ...

good-quality concrete can be made with MFA with high-microfines content. Many proportioning methods such as ACI 211 do not consider high amounts of microfines, consider partially the effect of shape and texture of aggregates, and do not encourage optimization of aggregate. The effect of shape, texture and grading of aggregates on fresh concrete was

Get PriceEmail Inquiry

Aggregates for Concrete - American Concrete Institute

Aggregate properties significantly affect the workability of plastic concrete and also the durability , strength, thermal properties, and density of hardened concrete. This Bulletin describes types of aggregates normally used in concrete, aggregate properties affecting performance of the concrete, tests used to measure aggregate properties, and

Get PriceEmail Inquiry

WHAT ARE THE PROPERTIES OF AGGREGATES FOR CONCRETE ...

Oct 01, 2016  Aggregates are used in concrete to provide economy in the cost of concrete. Aggregates act as filler only. These do not react with cement and water. But there are properties or characteristics of aggregate which influence the properties of resulting concrete mix. These are as follow. Composition. Size Shape.

Get PriceEmail Inquiry

Qualities Properties of Aggregates for Concrete

Dec 21, 2018  Aggregates used for concrete should possessthe following qualities, It should be clean, hard, strong, durable and free from any matter that might affect the quality of concrete. It should be free from veins, adherent coating, injurious amounts of disintegrated pieces,

Get PriceEmail Inquiry

Effect of Recycled Coarse Aggregate on Concrete Properties ...

Properties of Concrete Incorporating Recycled Concrete Aggregates. Proceedings of the NationalSymposium on the Use of Recycled Materials in Engineering Construction. Sydney. Tam, Gao and Tam. 2006. Comparing performance of modified two-stage mixing approach for producing recycled aggregate concrete.Magazine of Concrete Research, 58(7):477–484 ...

Get PriceEmail Inquiry

Study of aggregate dormancy and its effects on the ...

concrete produced from the aggregates increased and the aggregates were coarser when exposed to the weather. The study concluded that due to slight changes in compressive strength over the years, dormant aggregate has no negative effect on concrete strength and quality of

Get PriceEmail Inquiry

The influence of aggregate type on the strength and ...

Jan 15, 2015  Aggregate type therefore has a direct effect on the elastic properties of HSC and Ahmad and Alghamdi have shown that the effect of aggregate type on elastic modulus of concrete is very significant. This is supported by Uysal [18] , who showed that an increase in elastic modulus of the concrete was found when a higher stiffness aggregate was used.

Get PriceEmail Inquiry

Aggregates for Concrete - Memphis

ness, grading, moisture content, and other properties is expected. Close to half of the coarse aggregates used in portland cement concrete in North America are gravels; most of the remainder are crushed stones. Naturally occurring concrete aggregates are a mixture of rocks and minerals (see Table 5-1). A mineral is a natu-

Get PriceEmail Inquiry

Effect of dust content on some properties of concrete ...

Natural aggregates with three different gradings have been used to produce concretes with a constant water cement ratio of 0.5 and cement contents varying between 300 kg/m3 and 425 kg/m3. Aggregate gradings differed only in the dust (particles smaller than 300 μm) contents: Nil, 3%, 9%. Dust deficient aggregates always produced less workable concretes for cement contents below 330 kg/m3 ...

Get PriceEmail Inquiry

Destructive and non-destructive evaluation of concrete for ...

This paper investigated the effect of aggregate proportion on concrete properties both at the fresh state and in the hardened state. ... very low quality concrete, the water/cement ratios were ...

Get PriceEmail Inquiry

What factors affect concrete strength?

Concrete strength is affected by many factors, such as quality of raw materials, water/cement ratio, coarse/fine aggregate ratio, age of concrete, compaction of concrete, temperature, relative humidity and curing of concrete. Subsequently, one may also ask, what are the two most important factors affecting strength of concrete?

Get PriceEmail Inquiry

WHAT ARE THE PROPERTIES OF AGGREGATES FOR CONCRETE ...

Oct 01, 2016  Aggregates are used in concrete to provide economy in the cost of concrete. Aggregates act as filler only. These do not react with cement and water. But there are properties or characteristics of aggregate which influence the properties of resulting concrete mix. These are as follow. Composition. Size Shape.

Get PriceEmail Inquiry

Effect of Aggregate Properties on the Crushing Strength of ...

Oct 30, 2015  This paper studied the effect of aggregate properties on the crushing strength of concrete. In order to achieve the study objective, three types of coarse aggregates, brick khoa, shingles stone, and black stone were used to test. And the test results show that concrete made from black stone has the highest workability followed by shingles stone brick khoa of aggregates.

Get PriceEmail Inquiry

Study of aggregate dormancy and its effects on the ...

concrete produced from the aggregates increased and the aggregates were coarser when exposed to the weather. The study concluded that due to slight changes in compressive strength over the years, dormant aggregate has no negative effect on concrete strength and quality of

Get PriceEmail Inquiry

The influence of aggregate type on the strength and ...

Jan 15, 2015  Aggregate type therefore has a direct effect on the elastic properties of HSC and Ahmad and Alghamdi have shown that the effect of aggregate type on elastic modulus of concrete is very significant. This is supported by Uysal [18] , who showed that an increase in elastic modulus of the concrete was found when a higher stiffness aggregate was used.

Get PriceEmail Inquiry

(PDF) Influence of recycled concrete aggregates on ...

The compressive and splitting tensile strengths of concrete. made with recycled coarse aggregate depend on the mix proportions. In general, the strength of recycled. concrete can be 10–25% lower ...

Get PriceEmail Inquiry

A Study on Effect of Coarse Aggregate Type on Concrete ...

Apr 24, 2012  This study reports the findings of an experimental investigation conducted to study the effect of two types of coarse aggregates on the performance of concrete in terms of compressive strength, modulus of elasticity, and steel-corrosion penetration rate. For this purpose, 27 concrete mixtures were prepared from each type of coarse aggregates by varying key mixture parameters,

Get PriceEmail Inquiry

Destructive and non-destructive evaluation of concrete for ...

This paper investigated the effect of aggregate proportion on concrete properties both at the fresh state and in the hardened state. ... very low quality concrete, the water/cement ratios were ...

Get PriceEmail Inquiry

Effects of the Parent Concrete Properties and Crushing ...

Dec 12, 2013  The most important parameters associated with recycled concrete aggregate (RCA) production that may affect quality and yield include such properties of the parent concrete as the composition, strength and aggregate grading, type of crushers used, number of crushing stages, the size of the RCA particles, and the size reduction sequence.

Get PriceEmail Inquiry

Effect of dust content on some properties of concrete ...

Natural aggregates with three different gradings have been used to produce concretes with a constant water cement ratio of 0.5 and cement contents varying between 300 kg/m3 and 425 kg/m3. Aggregate gradings differed only in the dust (particles smaller than 300 μm) contents: Nil, 3%, 9%. Dust deficient aggregates always produced less workable concretes for cement contents below 330 kg/m3 ...

Get PriceEmail Inquiry

Aggregate: Mechanical Properties of Aggregate Concrete ...

ADVERTISEMENTS: Several mechanical properties of aggregate are of interest for the manufacture of concrete, specially high strength concrete subjected to high wear. Some of them are discussed here in brief: 1. Toughness 2. Hardness 3. Specific Gravity 4. Porosity of Aggregate 5. Bulking of Sand. Property # 1. Toughness: It is defined as the resistance []

Get PriceEmail Inquiry

Key Factors Affecting Strength of Concrete - Structural Guide

In general, cement is considered one of the highly influential factors affecting strength of concrete. Aggregates. Aggregate is the material bond with the cement paste after reacting with water. Therefore, the quality of the aggregate effect on the strength of concrete. Generally, 80% of the volume concrete is filled by aggregates.

Get PriceEmail Inquiry

EFFECTS OF AGGREGATE TYPE, SIZE, AND CONTENT ON

fracture properties of concrete. To predict the behavior of concrete under general loading requires an understanding of the effects of aggregate type, aggregate size, and aggregate content. This understanding can only be gained through extensive testing and observation. There is strong evidence that aggregate type is a factor in the strength of

Get PriceEmail Inquiry

Factors Affecting Strength of Concrete - The Constructor

Factors Affecting Strength of Concrete. Concrete strength is affected by many factors, such as quality of raw materials, water/cement ratio, coarse/fine aggregate ratio, age of concrete, compaction of concrete, temperature, relative humidity and curing of concrete.

Get PriceEmail Inquiry

INFLUENCE OF RECYCLED AGGREGATE QUALITY INFLUENCE

The reason for the drop in quality is mainly related to the quality of the recycled aggregate. The high water absorption of recycled aggregate has a negative impact of concrete mix workability and influences the water-cement ratio. This paper presents the effect of recycled aggregate quality on the physical and mechanical properties of concrete.

Get PriceEmail Inquiry