2 Concrete Materials - in

Paving concrete is composed of the following materials (Figure 2-1): 1) Fine aggregate, size No. 23 or gradation as identified in the QCP 2) Coarse aggregate, quality rating class AP, Size No. 8 3) Portland cement 4) Water Additional materials that may be found in paving concrete are: 1) Fly Ash 2) Water-reducing admixture

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size of coarse aggregate for concrete 1 2

size of coarse aggregate for concrete 1 2 4. 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 …

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Maximum Aggregate Size & Nominal Maximum Aggregate Size

Jan 24, 2013· 1/2" : 95%. 3/8" : 89%. #4 : 63%. #8 : 39%. 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 ...

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Table 703.4 Standard Sizes of Coarse Aggregates AASHTO …

1‐1/2 in. ‐ 3/4 in. 100 90‐100 20‐55 0‐15 0‐5 ... Table 703.4 Standard Sizes of Coarse Aggregates AASHTO M43 Amounts finer than each laboratory Sieve (square openings), percentage by weight. LAUREIJ AGGREGATES . Title: Product Gradations.xlsx Author: richard.rohrssen

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Fundamentals of Concrete

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

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1 (E) Toughness (Resistance to Abrasion) 2 The maximum ...

39 Use standard size No. 78M coarse aggregate in latex modified concrete. 40 (3) Prestressed and Precast Concrete 41 Use standard size No. 67 or No. 78M coarse aggregate in prestressed and precast 42 concrete. 43 (4) Use of More Than One Size 44 All concrete used in a single component of any structure shall be made with the same

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

Following are the classification of aggregates based on size: Aggregates are classified into 2 types according to size. Fine aggregate; Coarse aggregate; Fine Aggregate When the aggregate is sieved through a 4.75mm sieve, the aggregate …

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Gradation of Aggregate | Ultimate Guide - Construction How

Apr 11, 2020· A coarse aggregate is said to be graded with size number 57 if it is sieved through a set of sieves in the size range of 1 in. to No.4 (1 in., % in., 1/2 in., % in., and No.4) The sieving results (i.e. the percentages of materials by weight passing through the various sieves) are plotted to obtain the grading curves

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

When the size of aggregate is greater than 4.75 mm ( say 5 mm) it is called coarse aggregate. Graded aggregates are used for better particle packing. The larger the size of aggregate lesser the cement required for same strength up to certain grade...

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Standard Classification for Sizes of Aggregate for Road and ...

1.1 This classification defines aggregate size number desig-nations and standard size ranges for mechanical sieve analyses of coarse aggregate and screenings for use in the construction and maintenance of various types of highways and bridges. 1.2 Units—The values stated in SI units are to be regarded as standard.

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Aggregate Sizing Explained - Chaney Enterprises

Jan 15, 2016· 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. Chaney Enterprises' aggregate materials meet the ASTM C 33 Standard and can be found at our various locations throughout ...

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size of coarse aggregate for concrete 1 2 4

The proportion can be 1:2:4 (M15 concrete) or 1:1.5:3 for M20 concrete. The proportion of 1:2:4 concrete denotes the ratio of cement: sand: coarse aggregates by volume unless specified. Minimum compressive strength of concrete of 1:2:4 mix proportion should be 140 kg/sq.cm or 2000 lbs/sq on 7 . Get Price

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Concrete Mix Design - Weight Method, US Units, Non-Air ...

Nominal maximum size of aggregate = in. Enter unit weight of coarse aggregate (if unknown, use 95 to 120 lb/ft 3 for normal weight aggregate) = lb/ft 3. Enter fineness modulus of fine aggregate =. Enter (from Table above) volume of coarse aggregate per unit volume of concrete =. Weight of coarse aggregate = lb/yd 3.

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Aggregate in Concrete - 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 …

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