Mar 23, 2015· On the other hand in smaller size aggregates the surface area is increased which increases w/c ratio and lower strength is achieved. In general for strength upto 200 kg/cm 2 aggregates upto 40 mm may be used and for strength above 300 kg/cm 2 aggregate upto 20 mm may be used. Conditions That Decide Maximum Size of Coarse Aggregate to be Used in ...

Aggregates for Use In Concrete

2/12/2015 1 Aggregates for Use In Concrete 2 Learning Objective ... coarse aggregate MUST pass the 1.5" sieve but 95 - ... • The maximum aggregate size used in a concrete mix is dictated by the size of the structural member and the spacing between reinforcing steel.

Methods of Proportioning Cement, Sand and Aggregates in ...

Proportioning of concrete is the process of selecting quantity of cement, sand, coarse aggregate and water in concrete to obtain desired strength and quality. The proportions of coarse aggregate, cement and water should be such that the resulting concrete has the following properties: When concrete ...

Fundamentals of Concrete - USDA

Absolute Volume = 90 lb / (2.65 x 62.4 lb/cu ft) = 0.544 cu ft. The absolute volume of a concrete mix can be determined if the weight and bulk specific gravity of the components are known. For a concrete mix with 90-lbs of coarse aggregate with Gs = 2.65, 60-lbs of fine aggregate with Gs = 2.63, 25-lbs of cement, and 12-lbs of

201 - 1" x #4 - Concrete Materials

Size: US Sieve 1" to #4 Weight: Approx. 1.4 tons per loose cubic yard Source: Sioux Falls Quarry, Sioux Falls SD Available at: Sioux Falls Quarry, Rice St. Distribution Yard, Yankton Sand & Gravel. Applications. Surface treatment for roadways/parking lots/driveways; Component in asphalt concrete; Coarse aggregate in Portland Cement Concrete ...


SECTION 701 AGGREGATES ... coarse aggregate for concrete. 701.01.1 Fine Aggregates for Concrete A. General Requirements. Fine aggregate is natural sand having hard, strong, durable ... Sieve Size Grade 1 Grade 2 Grade 3 Grade 4 Grade 5 1 1/2 inch (37.5 mm) 100 1 inch (25.0 mm) 100 ...

Aggregate in Concrete - The Concrete Network

If there is a deficiency in a locally available fine aggregate, concrete may benefit from the addition of air entrainment, additional cement, or a supplemental cementitious material (SCM) to address these shortcomings. Broad coarse-aggregate gradation ranges are listed in Table 2 of ASTM C 33.


TABLE OF CONTENTS CHAPTER 1 Selection of Aggregates ... coarse and fine aggregate sources and ensuring there is an adequate supply of each. Where practical, multiple aggregate sources (coarse and fine) should be used. ... Dry weight of sample after washing: 730.4 g Sieve Size Weight (g) Retained Percent Retained Percent Passing

Aggregate Sizing Explained - Chaney Enterprises

Jan 15, 2016· Aggregate serves as a reinforcement to add strength to composite materials such as concrete. Aggregates can be categorized into three groups: fine aggregate, coarse aggregate, or all-in aggregate. Fine aggregate, such as concrete or masonry sand is defined as material that mostly passes through a 4.75 mm IS sieve.

Construction aggregate - Wikipedia

Construction aggregate, or simply "aggregate", is a broad category of coarse to medium grained particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates. Aggregates are the most mined materials in the world.

A Review of ACI 301 Section 4, Concrete Mixtures

• Size of Coarse Aggregate • Unless otherwise specified, nominal size shall not exceed ¾ of minimum reinforcement spacing. 1" 520 3/4" 540 3/8" 610 TABLE — Minimum cementitious material content requirement for floors Nominal maximum size of aggregate, in. Minimum cementitious material content 1-1/2" 470


The effects of aggregate type, size, and content on the behavior of normal and high-strength concrete, and the relationships between compressive strength, flexural strength, and fracture energy are discussed. The concrete mixtures incorporate either basalt or crushed limestone, aggregate sizes of 12 mm ('h in.) or 19 mm (:Y. in.), and

Aggregate | Quality Construction Materials | Pennsy Supply

This material has a 1-1/2 inch top size and is a clean material. Often used for backfill for retaining walls, used for subase for sheds, also sometimes used as driveway stone. Also used as the primary raw aggregate in Ready Mixed Concrete and some Hot-Mixed Asphalt mixes. Will not compact.

What are the quantities of cement, sand, and coarse ...

Jul 25, 2018· Suppose you want one cubicmeter of Cement concrete 1:2:4 (one of Cement,two of sand as fine aggregate and four of hard broken stone of 20mm size as coarse aggregate on volume basis), you require the following materials :- Coarse aggregate of 20mm ...

Aggregate Sizes - Quality in California

May 04, 2011· Aggregate materials are generally broken up into two classifications of size: fine and coarse aggregate. Coarse aggregates are typically sizes larger than the #4 sieve. Fine aggregates are typically sizes smaller than the #4 sieve. What people refer to as "dust" is typically aggregate smaller than the #200 sieve. Simple enough right? Any questions?

Coarse Aggregate Gradations -

Coarse Aggregate Sieve Analysis (#7 Stone) Nominal Size (1/2" to No. 4 ) Original Mass: CONCRETEHELPER.COM Sieve Size Grams Retained % Grams Retained Cumulative % Retained Cumulative % Passing ASTM C33 Specification

5 Aggregate Specifications and Requirements

Granulated blast furnace slag fine aggregate 2.1 Steel furnace slag, both fine and coarse 3.2 Gravel Coarse Aggregates There is a specific requirement for gravel coarse aggregates regarding crushed particles. This requirement applies, however, only when gravel

The Effect of Aggregate Size on The Strength of Concrete

several factors such as, mixing ratio, aggregate size, texture, coarse and fine aggregate, compaction method, curing period and some parameters have been discussed in literature review. The results showed the concrete aggregate size of 20mm has a 45.7% higher compressive strength than the concrete aggregate size of 10mm.

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

Aggregates can be classified in many ways. Classification of aggregates based on shape and size such as coarse and fine aggregates are discussed here, Aggregates are the important constituents of the concrete which give body to the concrete and also reduce shrinkage. Aggregates …

Aggregates for Concrete

underneath to catch material passing the finest sieve (Fig. 1). Sieve sizes commonly used for concrete aggregates are detailed in Table 1, and various physical properties of normalweight aggregates, with typical range values, are shown in Table 2. Coarse and fine aggregates are generally sieved separately.

What is meant by ratio in mixture of 1:2:4 in concrete ...

Mar 27, 2017· Concrete is a mixture of cement and sand and aggregate. The ratio is the volumes of each component. 1:2:4 is therefore the concrete resulting when 1 metre cubed of cement is mixed with 2 metres cubed of sand is mixed with 4 metres cubed of aggrega...

Standard Specification for Concrete Aggregates1

Concrete Aggregates1 This standard is issued under the fixed designation C 33; the number immediately following the designation indicates the year of original ... 4.2.5 When the order is for coarse aggregate: The grading (size number) (see 10.1 and Table 2), or alternate grading as agreed between the purchaser and aggre-gate supplier.

ACI 211.1: Maximum Aggregate Size For Concrete Mix Design

In this post I shall discuss maximum aggregate size that can be used in design. Large maximum sizes of aggregates produce less voids than smaller sizes. Hence, concretes with the larger-sized aggregates require less mortar per unit volume of concrete, and of coarse it is the mortar which contains the most expensive ingredient, cement.

Aggregates for Concrete - Civil Engineering

shows these limits for fine aggregate and for one size of coarse aggregate. There are several reasons for specifying grading limits and nominal maximum aggregate size; they affect relative. 82. Design and Control of Concrete Mixtures EB001. Fig. 5-4. Range of particle sizes found in aggregate for use in concrete. (8985) Fig. 5-5.

Strength - Pennsylvania State University

The ASTM C 33, Standard Specification for Concrete Aggregates, grading requirements for coarse and fine aggregates are shown on Tables (3) and (4), respectively. There are several reasons for specifying grading limits and maximum aggregate size, most importantly, workability and cost.


Jul 07, 2014· According to size the aggregates are classified as: Fine Aggregate Coarse Aggregate All in Aggregate Fine Aggregate It is the aggregate most of which passes 4.75 mm IS sieve and contains only so much coarser as is permitted by specification. According to source fine aggregate may be described as: Natural Sand– it is the aggregate […]

4 Aggregate Specifications and Requirements

4-2 COARSE AGGREGATES Section 904.03 defines the acceptable limits for all uses of coarse aggregates. Coarse aggregates are divided into classes based on quality requirements as noted in the Classification of Aggregates table. Class AP is the highest class and is assigned to aggregates which m eet the requirements for all INDOT uses.

Effect of Aggregate Size on Strength| Concrete ...

Q.: How much stronger is a floor made with 1/2-inch aggregate than one with 3/4-inch aggregate if all other ingredients remain the same? A.: If the quantities of coarse aggregate, fine aggregate, cement and water are the same for both mixes, the mix with l l/2-inch aggregate will have greater slump and will probably bleed more.


EFFECTS OF AGGREGATE SIZES ON THE CONCRETE STRENGTH. In the sense that the materials involved in this project were capital intensive more especially cement, so in carrying out the work one must have to be careful in the selection and collection of materials to be used in the casting of the concrete. ... 2.2.1 Fine Aggregate/Sand 2.2.2 Coarse ...

Quartzite - Concrete Materials

Quartzite rock is a hard, non-foliated metamorphic rock which was originally pure quartz sandstone and is found in Eastern South Dakota amongst other places throughout the United States.