— Moreover different desert areas and sampling locations in desert affect the fineness modulus of DS The fineness modulus of DS in Mu Us Desert and Tengger Desert China is [19] [29] while the fineness modulus of DS in Sahara Desert Algeria is [30] [31] Meanwhile the fineness modulus of DS in the south and
If the test aggregate gives higher fineness modulus the mix will be harsh and if on the other hand gives a lower fineness modulus it gives uneconomical mix Effective Size of Aggregates Effective size in microns is the maximum particle size of the smallest 10% of the aggregate or it is the sieve opening corresponding to 10% finer and is
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1 Fineness Modulus It is one of the factors that influence concrete mix design since it controls the proportion of sand in concrete mixture The overall fineness of sand is given by factor called fineness modulus and it is found by sieve analysis based on ASTM C 33/ M33 specifications or any other applicable standards
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Fineness modulus; RS BS F10J90 Cause analysis The uneven and coarse texture of the artificial sand intensifies the opposition encountered by the concrete during the mixing process leading to a reduction in its fluidity the decrease in mass and relative dynamic modulus of
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— The average value of fineness modulus is found The zoning of aggregate as per IS 2386 PART III 1963 is found Table 7 gives the comparison between the properties of natural sand and artificial sand which gives the similarity between the aggregates Table 7
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— Natural River Sand The natural sand having fineness modulus of and conforming to zone II as per IS 383 1970 [5] was used for the experimentation after washing it with clean specific gravity of this natural sand was found to be
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— As fineness modulus of sand changes from to there is an increase in compressive strength from to MPa strength increases by 14% On the other hand by increasing Fineness Modulus from to 3 Compressive strength increases from to MPa resulting in 16% increase in strength
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— SB3 sand FM= and SG5 sand FM= were mixed to vary the fineness modulus from to 3 and the compressive strengths of each corresponding mortar specimen determined after 28 days
Yêu cầu trực tuyến →Artificial sand particles with a particle size of or more have a one dimensional size smaller than the average particle size of times the corresponding particle size Fine Sand the fineness modulus is and the particles with particle size greater than exceed 85% of the total weight
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— Various specifications of artificial sand 1 The fineness modulus of coarse sand is and the average particle size is or more 2 The fineness modulus of medium sand is and the average particle size is to 3 The fineness modulus of the fine sand is and the average particle size is to
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The larger the fineness modulus the more coarse the aggregate A typical fineness modulus for fine aggregate used in PCC is between and Standard Test Methods ASTM C 125 Standard Terminology Relating to Concrete and Concrete Aggregates
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At present the general requirement of fineness modulus of artificial sand is and the screen size is generally recommended to be or If the content of stone powder is large sieve can be used As far as possible the type of screen mesh should be square mesh which is very beneficial to the particle shape control
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Of concrete Table 5 Fineness modulus and Zone cl assification Fineness modulus of Natural sand = 278 ÷ 100 = Fineness modulus of Robo/Artificial sand = ÷ 100 = TABLE 3 Average properties from all manufacturing units Robo silica Pvt Ltd V FINENESS MODULUS AND ZONE CLASSIFICATION The results of aggregate sieve
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