Coarse Aggregates Fine Aggregates | Types, Uses and ...

Using aggregates larger than the maximum size of coarse aggregates permitted can result in interlock and form arches or obstructions within a concrete form. That allows the area below to become a void, or at best, to become filled with finer particles of sand and cement only and results in a weakened area. Fine Aggregate

CHAPTER 4 AGGREGATES - civil.emu.edu.tr

Fine aggregate includes the particles that all passes through 4.75 mm sieve and retain on 0.075 mm sieve. 2) Coarse Aggregate (gravel): ... 4.5.9 Fineness Modulus • Fineness modulus is the sum of the cumulative percentage retained on the sieves of the standard test sieves. Fineness modulus ...

What is Fine Aggregate? FA Types used in Construction ...

It is generally denoted by 'F'. The fineness modulus sand should be between 2 and 3. A smaller value of fineness modulus indicates the presence of finer particles and vice versa. If good sand is not available in the nearby of the site, the substitutes may be used as fine aggregate.

Fineness Modulus

Fineness modulus of sand (fine aggregate) is an index number which represents the mean size of the particles in sand. It is calculated by performing sieve analysis with standard sieves. The cumulative percentage retained on each sieve is added and subdivided by 100 gives the value of fine aggregate.

Coarse Aggregate Properties

The properties of the coarse aggregate used in a concrete mixture affects the modulus for a few reasons. One property is the modulus of elasticity of the coarse aggregate. A higher aggregate modulus will result in a concrete having a higher modulus. As expected, a lightweight aggregate will have a lower modulus than the mortar paste.

Fineness Modulus - an overview | ScienceDirect Topics

The appropriate range of fineness modulus of the sand aggregate used in normal concrete is 3.7–1.6. Both medium sand and coarse sand spiked with some fine sand (coarse:fine = 4:1) are applicable. Sand aggregate plays a significant role as a skeleton and in passing the stress in concrete.

What Is the Fineness Modulus of Fine Aggregate ...

Fineness modulus is the sum of the total percentages of the aggregate retained on each sieve divided by 100. Natural sand or crushed stone is used to achieve a fine rating, with most particles passing through a 3/8-inch sieve.

Function and Importance of Aggregate in Concrete

Nov 21, 2016· Function and Importance of Aggregate in Concrete 1. FUNCTIONS AND IMPORTANCE OF AGGREGATE IN CONCRETE APPLICATIONS Vinod Kumar Singh Co-founder, is an Online Marketplace for Construction Material & One Stop Solution for Bungalow Construction & Interiors 2.

FINENESS MODULUS OF AGGREGATE – WHAT, WHY & HOW

Fineness modulus is generally used to get an idea of how coarse or fine the aggregate is. More fineness modulus value indicates that the aggregate is coarser and small value of fineness modulus indicates that the aggregate is finer. Fineness modulus of different type of sand is as per given below.

Effect of Fineness of Sand on the Cost and Properties of ...

ASTM Designation: C33-93- standard specification for concrete aggregates"–The fine aggregate shall have not more than 45% passing any sieve and retained on the next consecutive sieve and its fineness modulus will not be less than 2.3 and not more than 3.1. Rest is the same as for AASTHO M6-93.

What is the fineness modulus? - Quora

Fineness modulus is an index no. Which Indicates mean particle size in sand(fine aggregate) FM is obtained by adding cumulative percentage retained(percentage ...

Aggregates for Concrete - Civil Engineering

crushed aggregate requires slightly higher values. Fine aggregate content is usually 35% to 45% by mass or volume of the total aggregate content. CHARACTERISTICS OF AGGREGATES. The important characteristics of aggregates for concrete are listed in Table 5-2 and most are discussed in the following section: Grading

Concrete Aggregates - Function, Properties ...

Coarse aggregate is used to describe particles larger than 4.75 mm, and the term fine aggregate is used for particles smaller than 4.75mm. Fine aggregates contain particles in the size range 75 µm to 4.75 mm, and coarse aggregates from 4.75 to about 40 mm, except for mass concrete which may contain particles up to 150 mm.

Can Changes in Fine Aggregate Affect Concrete ...

Typically the fineness modulus varies between 3.2 and 2.8. A small number indicates a fine grading, and a large number indicates a coarser material. The fineness modulus of the fine aggregate is required for mix proportioning, since sand gradation has the largest effect on concrete workability.

What is Fineness Modulus of Sand (Fine Aggregate) and ...

Fineness modulus of sand (fine aggregate) is an index number which represents the mean size of the particles in sand. It is calculated by performing sieve analysis with standard sieves. The cumulative percentage retained on each sieve is added and subtracted by 100 gives the value of fineness ...

Fineness Modulus And Particle Size Analysis Of Fine And ...

The application of fineness modulus and particle size distribution of aggregate is to fine the aggregate is coarse or fine wheather it can be used in making mortar or concrete. If not what corrective action as to be taken is decided upon. Then the particles distribution study given an idea as to weather the material well grade or not.

The Importance of Fineness Modulus| Concrete Construction ...

In 1925, Duff Abrams introduced the concept of fineness modulus (FM) for estimating the proportions of fine and course aggregates in concrete mixtures. The premise: "aggregate of the same fineness modulus will require the same quantity of water to produce a mix of the same consistnecy and give a ...

Aggregate Properties - The Concrete Portal

Rougher aggregates show better bond with paste, but also cause an increase in the water demand. Weathered aggregates are smooth, while crushed aggregates are rough. Aggregate strength, modulus, and toughness . The strength of aggregate tested independently is generally always higher than that of concrete.

3 Aggregate Properties - in.gov

usually crushed stone or crushed gravel, and the fine aggregate particles are usually natural sand. The Standard Specifications detail the requirements for crushed materials for various uses. COATINGS Coating is a layer of substance covering a part or all of the surface of an

HOW TO BLEND AGGREGATE USING FINENESS MODULUS VALUE ...

Sometime it may happen that, the aggregate available at site is not conforming to the desired grading. In such case two or more aggregates from different sources may be combined to get the required grading. Fineness modulus value can be used as a technical way to blend coarse aggregate with fine aggregate to produce desired […]

Fineness Modulus of Coarse Aggregates and its Calculation

Fineness modulus of coarse aggregates represents the average size of the particles in the coarse aggregate by an index number. It is calculated by performing sieve analysis with standard sieves. The cumulative percentage retained on each sieve is added and subtracted by 100 gives the value of fine aggregate.

FINENESS MODULUS IN AGGREGATE - youtube.com

Jan 22, 2018· This video contains about the fineness modulus in aggregate. This video contains about the fineness modulus in aggregate. ... Sieve Analysis of Fine Aggregate - Duration: 14:40. NCTEL 92,761 views.

What is Fineness Modulus and how to calculate it - Blogger

Mar 07, 2016· What is Fineness Modulus and how to calculate it ... Fineness modulus gives the idea about how course or fine the sand is. Lower FM indicates fine sand and higher FM indicates courser sand.Fine sand requires more cement paste due to high surface area and tendency to develop crack. ... Procure to determine Fineness Modulus. Sieve the aggregate ...

CRD-C104-80 Method of Calculation of the Fineness …

2 METHOD OF CALCULATION OF THE FINENESS MODULUS OF AGGREGATE Fineness Coarse aggregate Fineness = 9(100) - 156 = 900 - 156 Modulus 100 100 = 7.44 Combined Coarse and Fine 65:35 Modulus Fineness = 9(100) - 302 = 900 - 302 Modulus 100 100 = 5.98 5. Significance and Use A method of selecting mixture proportions

Fineness modulus - Wikipedia

The Fineness modulus (FM) is an empirical figure obtained by adding the total percentage of the sample of an aggregate retained on each of a specified series of sieves, and dividing the sum by 100.The sieve sizes are 0.15 mm, 0.3 mm, 0.6 mm, 1.18 mm, 2.36 mm, 4.75 mm, 9.5 mm, 19.0 mm, 38.1 mm and larger increasing in the ratio of 2:1.

SIEVE ANALYSIS OF FINE AND COARSE AGGREGATES FOP …

T27_T11_short Aggregate 4-1 October 2011 SIEVE ANALYSIS OF FINE AND COARSE AGGREGATES FOP FOR AASHTO T 27 (11) MATERIALS FINER THAN 75 µm (No. 200) SIEVE IN MINERAL AGGREGATE ... such as fineness modulus. The sample may also be sieved in increments to ... In the case of coarse / fine aggregate mixtures, the minus 4.75 mm (No. 4) may be ...

FINENESS MODULUS OF AGGREGATE – WHAT, WHY & HOW ...

Sep 01, 2014· Fineness modulus is generally used to get an idea of how coarse or fine the aggregate is. More fineness modulus value indicates that the aggregate is coarser and small value of fineness modulus indicates that the aggregate is finer. Fineness modulus of …