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aggregate size in concrete

The larger sizes will require less mixing water and hence for a given cement factor will produce concrete of lower waterratio than the smaller sizes 3 The advantage of small aggregate in the waterratio strength relationship may or may not be sufficient to ... As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.

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  • Different Types Sizes of Aggregate for Concrete

    Aug 11 2018 · 1 FINE AGGREGATE Stone Dust 05mm – 5mm Coarse Sand 05mm – 2mm Medium Sand 025mm – 05mm Fine Sand 006mm – 025mm Silt 0002mm – 006mm Clay 0002mm Coarse aggregates are particulates that are greater

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  • Aggregate in Concrete The Concrete Network

    The use of recycled concrete crushed to propersize concrete aggregate has also demonstrated successful performance Recycled concrete will have a higher absorption and lower specific gravity than conventional aggregates To produce good quality durable concrete containing a portion of recycled concrete aggregate often requires trial

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    Mar 23 2015 · Conditions That Decide Maximum Size of Coarse Aggregate to be Used in Concrete It should not be more than one fourth of the minimum thickness of the member provided that the concrete can be placed Plump large undressed stone embedded with others in concrete on large work above 160 mm and upto

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  • What nominal maximum sizes of aggregate are

    In concrete slabs the nominal maximum size should not exceed threefourths of the minimum clear spacing of reinforcing bars or onethird of the section depth ACI 3021R The commentary R26421a5 of ACI 31819 states that the size limitations on aggregates are provided to facilitate placement of concrete around the reinforcement without

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  • 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 38 to 0094 inch More specifically a 57 aggregate is the combination of 5 and 7 aggregates ranging from 1 to 019 inch

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  • Effects of Aggregate Properties on Concrete Size Grading

    Variation in the size of Aggregates changes the water demand cement content microcracking strength in concrete It also effects pumpability and durability of concrete Grading of aggregates depends on the proportions of coarse and fine aggregate If grading of aggregate is varied it also changes cement paste content cost economy workability of the mix

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  • Does Aggregate Size Affect Concrete Shrinkage Concrete

    Dec 01 2000 · A Cement paste shrinks and most aggregates dont so increasing the aggregate content reducing the paste content reduces shrinkage To produce a workable concrete a small maximumsize aggregate such as pea gravel requires a higher sand content than does a larger maximumsize aggregate

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    There is much controversy concerning the effects of coarse aggregate size on concrete principally about the effects on fracture energy Some research Strange and Bryant 1979 Nallathambi Karihaloo and Heaton 1984 has shown that there is an increase in fracture toughness with an increase in aggregate size However Gettu and

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  • Aggregates Portland Cement Association

    Crushed aggregate is produced by crushing quarry rock boulders cobbles or largesize gravel Recycled concrete is a viable source of aggregate and has been satisfactorily used in granular subbases soilcement and in new concrete After harvesting aggregate is processed crushed screened and washed to obtain proper cleanliness and gradation

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