### Classification of Aggregates as per Size and Shape -Coarse ...

Coarse Aggregate. Gravel, cobble and boulders come under this category. The maximum size aggregate used may be dependent upon some conditions. In general, 40mm size aggregate used for normal strengths and 20mm size is used for high strength concrete. the size range of …

### Shape, Size - Coarse Aggregates

Coarse aggregates are classified into two main groups: (i) single-size aggregate and (ii) graded aggregate. Single-size aggregate is based on a nominal size specification. It contains about 85 to 100 percent of the material which passes through that specified size of the sieve and zero to 25% of which is retained in the next lower sieve.

### HOW TO CLASSIFY AGGREGATES ACCORDING TO SIZE? - …

Jul 07, 2014 · According to size coarse aggregate is described as graded aggregate of its nominal size i.e. 40 mm, 20 mm, 16 mm and 12.5 mm etc. for example a graded aggregate of nominal size 20 mm means an aggregate most of which passes 20 mm IS sieve.

### Sieve Analysis of Coarse Aggregate: The Test Procedure ...

Particle size determinations on large samples of aggregate are necessary to ensure that aggregates perform as intended for their specified use. A sieve analysis, or gradation test determines the distribution of aggregate particles by size within a given sample.

### Aggregate Sizing Explained - Chaney Enterprises

Jan 15, 2016 · For example coarse aggregate has a standard grading requirement for each different size from #1 to #8. A #1 aggregate is a nominal size of 3 ½ to 1 ½ inches and a #8 aggregate is a nominal size of 3/8 to 0.094 inch. More specifically, a #57 aggregate is the combination of #5 and #7 aggregates ranging from 1 to 0.19 inch.

### Aggregates - Types of Aggregates | Coarse Aggregate, Fine ...

Coarse Aggregate. Those particles that are predominantly retained on the 4.75 mm (No. 4) sieve and will pass through 3-inch screen, are called coarse aggregate. The coarser the aggregate, the more economical the mix. Larger pieces offer less surface area of the particles than an equivalent volume of …

### SIEVE ANALYSIS OF FINE AND COARSE AGGREGATES …

For coarse aggregate, the large tray shaker is most commonly used (Figure 1). This device provides a clamping mechanism which holds the sieve in place during agitation. Shakers of this make need to be run 5 minutes for size 9 or larger and 10 minutes for sizes smaller than size 9.

### CHAPTER 3 - PHYSICAL PROPERTIES OF LIGHTWEIGHT …

Most lightweight concretes use a lightweight coarse aggregate 3/4 in. to #4 mesh (1/2 - #8) with ordinary sand, minus #4 mesh (minus 4.8 mm), however other combinations of LWA and natural aggregate are used. Aggregate for lightweight concrete masonry units are normally sized minus 3/8 in. (9.5 mm).

### Understanding the Limits of Deleterious Materials of ...

The amount of deleterious material in each size group of coarse aggregate shall not exceed the limits shown in Table 5, determined in accordance with the test methods shown. Section 32 13 14.13 – Concrete Pavement for Airfields and Other Heavy- Duty Pavements. The section that I work with is 2.3.2.4 Deleterious materials – Airfield Pavements.

### What is Fineness Modulus of Coarse Aggregates and Its ...

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.

### Aggregates for Concrete - Civil Engineering

Coarse aggregates (Fig. 5-2) consist of one or a com-CHAPTER 5 Aggregates for Concrete bination of gravels or crushed stone with particles predominantly larger than 5 mm (0.2 in.) and generally between 9.5 mm and 37.5 mm (3⁄ 8 in. and 11⁄ 2 in.). Some natural aggregate deposits, called pit …

### TYPES OF AGGREGATE - tpub.com

The maximum size of coarse aggregate must be no larger than the sizes given in table 13-1. The capacity of the mixing equipment may also limit the maximum aggregate size. GRADATION.— Gradation of aggregate refers to the amount of each size of particle used in the mix.

### aggregate Flashcards | Quizlet

fine aggregate coarse aggregate. fine - less than 4.75mm coarse - greater than 4.75mm. aggregate sources. greywacke - makes up 70% of national agg andesite - tauranga ... with 2 agg sizes smaller particles will fill some of the voids reducing void content * only limited sizes * …

### Evaluation of coarse aggregate morphological ...

Each of the mentioned morphological indices is just calculated for one aggregate. In this study, 200 particles were randomly selected from each size fraction out of four size groups for one aggregate sample. Therefore, the average value of each index has to be calculated for a total of 200 aggregates of each size group.

### What is Aggregates | Aggregate Definition & its Types.

Aggregates are variously classified on the basis of their stone size, their origin, and their volume-weight as follows: (1.) Aggregate Types on the basis of stone Size. This is the most common classification, where in two types of aggregates are distinguished: (Fine and Coarse). (i) Fine Aggregates.

### 703 AGGREGATE - Pages

Where standard size of coarse aggregate designated by two or three digit numbers are specified, obtain the specified gradation by combining the appropriate single digit standard size aggregates by a suitable proportioning device which has a separate compartment for each coarse aggregate combined.

### Influence of coarse aggregate shape on optimum fine to ...

Journals & Books; Create account Sign in. Sign in Create account

### Gradation Techniques - Tarantula Curve

Shilstone Workability-Coarseness Chart Starting in the late 1980s, James Shilstone revealed a mixture design process based on the proportioning of the aggregate using the combined gradation to proportion a group of sieve sizes that can be categorized as coarse, intermediate, and fine aggregate.