what size agragate used in concrete

Different Types Of Aggregate And Their Uses

The Different Types Of Aggregate. The categories of aggregates include gravel, sand, recycled concrete, slag, topsoil, ballast, Type 1 MOT, and geosynthetic aggregates (synthetic products commonly used in civil engineering projects used to stabilise terrain).

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IS 383 (1970): Specification for Coarse and Fine Aggregates From

2.1.2 Crushed Stone Sand - Fine aggregate produced by crushing hard stone. 2.1.3 Crushed Grace1 Sand - line aggregate produced by crushing natural gravel. . 2.2 Coarse Aggregate -- Aggregate most of which is retained on 4*75-mm IS Sieve and containing only so much finer material as is permitted for

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Effects of Aggregate Properties on Concrete - Size, Grading

Hence, it is required that optimum size of aggregates is used so that concrete can easily be transported, handeled, compacted and finished with ease. Variation in the size of Aggregates changes the water demand, cement content, micro-cracking (strength) in concrete. It also effects pumpability, and durability of concrete. Concrete is more workable when smooth and rounded aggregate is used instead of

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3) Main types of aggregates classification | Based on size

2. Classification according to size The size of aggregates used in RCC works may range from few centimeters and down to a few microns. The largest maximum size of aggregate practicable to handle under a given set of conditions should be used. Using large-sized aggregate results in . Reduction of the cement content ; Reduction in water requirement

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Functions and requirements of ingredients of cement concrete

Aggregate: In the cement concrete, to provide good quality of concrete aggregate is used in two size groups: · Fine aggregate (sand) particle size less than 4.75mm · Coarse aggregate – Particle size more than 4.75mm. Fine aggregate (sand) Sand consists of small angular or rounded grains of silica.

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The role of aggregate in concrete countertop mix designs

If a concrete countertop is going to be ground with diamond tooling, the aggregate will show, so aesthetics also affect the choice of aggregates. Problems arise with soft, reactive or weak stone or rock. Lightweight aggregates, a topic for another discussion, are also used in concrete. Size. Aggregate size and gradation are the most important

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Mix Design For Concrete Roads As Per IRC-15-2002

A = Air content, percent. Assume entrapped air 1.5% for 20 mm maximum size of aggregate and 2.5% for 10mm maximum size of aggregate. There are always entrapped air in concrete. Therefore ignoring entrapped air value as NIL will lead the calculation of higher value of density. W m = Mixing water required in kg/m 3. C m = Cement required, kg/m 3

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What size aggregate should be used to make the concrete

In order to minimize cracking, it is ideal to use a mix design containing aggregates ranging from natural sand, to 1-1/4" at an average of 18-22% of each size by weight.

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PDF Aggregates for Use In Concrete

The maximum aggregate size used in a concrete mix is dictated by the size of the structural member and the spacing between reinforcing steel. "Design & Control of Concrete Mixtures," 14 thEdition, Portland Cement Association. Sand Stone Well Graded Blend

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Types of aggregate used in building construction - Civil Sir

Types of aggregate based on size. There are two types of aggregate used in construction. A) fine aggregate B) coarse aggregate. A) fine aggregate:– the aggregate which are usually passes or sieve through sieve of 4.75 mm size. That is known as fine aggregate and it is normally is sand or crushed stone having size less than 9.5 mm in diameter. Mix of Fine size and medium size gravel used to

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Aggregate in Concrete - The Concrete Network

The maximum size of coarse aggregate that can be used in a mix depends on the size, shape, and reinforcing of a member, based on these "not-to-exceed" guidelines (see Photos 5 and 6): 3/4 of the clear spacing between rebar or between rebar and forms (cover distance) 1/3 the depth of the slab 1/5 the narrowest dimension of a member

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The Effect of Aggregate Properties on Concrete

In normal concrete the aggregate weighs 1,520 – 1,680 kg/m 3, but occasionally designs require either lightweight or heavyweight concrete. Lightweight concrete contains aggregate that is natural or synthetic which weighs less than 1,100 kg/m 3 and heavyweight concrete contains aggregates that are natural or synthetic which weigh more than 2080 kg/m 3 .

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Maximum Aggregate Size & Nominal Maximum Aggregate Size

By the CT 382 definition, the maximum aggregate size is 3/4" and the nominal maximum aggregate size is 1/2". In the November 2011 version of CT 202, nominal maximum aggregate size is defined as "one sieve size larger than the first size to retain more than 10%." By this definition the nominal maximum aggregate size for the material example

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What Is Lightweight Aggregate Concrete And Its Uses?

The lightweight aggregate is a kind of coarse aggregate which is used in the production of lightweight concrete products like concrete block, structural concrete, and pavement.. The shape of the lightweight aggregate used in concrete can be cubical, rounded, angular, or of any other shape.The shape and texture can directly affect its workability. The compressive strength level which is required by the

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What is the size of coarse aggregate used in concrete? - Quora

Generally the size of coarse aggregate used is 10-12.5 mm. If we use the proportional mix of different sizes small to large (>4.5 mm to 20/25 mm), this make the concrete structure compact by align themselves in voids depending upon their size and compact mass will be formed with increased strength.

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Characteristics and Size of Aggregates Used in Construction

Max. Size of aggregate: 1. Mass concrete work. i.e. dams, retaining walls, piers and abutments, etc. 40mm: 2. R.C.C work. i.e. beams, columns, etc: 20mm: 3. Flooring: 10mm

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The role of aggregate in concrete countertop mix designs - Concrete

Aggregates larger than ¼ inch are classified as coarse aggregate, while anything smaller than ¼ inch is termed fine aggregate. As a general rule, the largest aggregate should be no greater in diameter than one-third the depth of the slab, or one-fifth the smallest dimension of the form.

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GRADATION OF AGGREGATE FOR CONCRETE BLOCK

with an increase in the top size of the aggregate provided the aggregate is well graded and mix can be thoroughly consolidated in the machine. Almost all concrete block producers today use aggregate smaller than ½ inch although scattered reports have indicated the feasibility of using an aggregate with some material of larger size. The maximum

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How much cement sand & aggregate required for M20 concrete

Ans. :-19 cft (0.42 m3, 680 kgs) sand are required for 1 cubic metre of M20 concrete. How much aggregate required for M20 concrete. We have given dry volume of concrete is equal to 1.54 cubic metre and part of aggregate in concrete mix is equal to 3/5.5, density of aggregate is equal to 1550 Kg/m3 and one cubic metre is equal to 35.3147 cu ft

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Why is Aggregates used in Concrete? | Total Concrete

Why do we use aggregate in concrete? Aggregate provides much of the strength, thermal and elastic properties of concrete, as well as dimension and volume stability. Including aggregate in the mix can also control shrinkage and prevent cracking. A specific aggregate (or combination of aggregate) is selected for its durability, strength

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EFFECTS OF AGGREGATE TYPE, SIZE, AND CONTENT ON CONCRETE STRENGTH

The concrete mixtures incorporate either basalt or crushed limestone, aggregate sizes of 12 mm ('h in.) or 19 mm (:Y. in.), and coarse aggregate contents with aggregate volume factors (ACI 211.1-91) of0.75 and 0.67. Water-to-cementitious material ratios range from 0.24 to 0.50.

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PDF Gradation of Aggregate for Concrete Block

Almost all concrete block producers today use aggregate smaller than ½ inch although scattered reports have indicated the feasibility of using an aggregate with some material of larger size. The maximum size possible will depend on the minimum section thickness of the concrete block. Obviously

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What is Concrete Sand Types & Specification - Concrete

The large aggregate particles of uniform size are the effect of a collection of various sizes. In reducing the total volume of voids in between aggregates is illustrated. The specified concrete sands texture after washing concrete and is used it anywhere. It can be mixed compaction and improve porosity into native clay-based soils with organic

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Size of aggregates used in building construction

The size and shape you choose will determine how easy it will be to use the concrete. The following are the common classifications of aggregates in Essex with regards to the size. Coarse aggregate. After aggregate is crushed, it is usually sieved, and the process is used to differentiate the coarse aggregate from fine ones.

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What is glass aggregate concrete & Specifications - Concrete

High reactivity levels of the glass incorporation mixture, that the reused waste glass as aggregate in polymer structure of concrete that can use. Size of wasted Glass aggregates 6 to 8 mm, used in floors, walls, etc. Lightweight aggregates: The thin glass aggregates get from a natural resource, and it can also be made by hand or machinery.

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Everything You Need to Know About Exposed Aggregate Concrete

Exposed aggregate concrete is different from regular concrete in terms of shape, color and size. This allows you to design a custom concrete surface. Unlike regular concrete, the cement used to bind together the aggregate can be tinted to match the aesthetic of the house.

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