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Aug 15, 2017· 4) Using air entraining admixtures is very effective in reducing the bleeding. 5) Add more cement in the mix. 6) Increase the amount of fine aggregate if sand is coarser (fineness modulus of 2.5 to 2.8 best suited) in mix and reduce aggregate proportionally.
Effect of Fineness Modulus of Manufactured Sand on Mechanical Properties of Self Compacting Concrete D. Pavan Kumar*1,C. Sashidhar2 1Reserach Scholar, Ph.D, Department of Civil Engineering, Jawaharlal Nehru Technological University, Anantapur, India
Sep 01, 2014· What is Fineness Modulus of Aggregate? Fineness modulus is an empirical factor obtained by adding the cumulative percentages of aggregate retained on each of the standard sieves ranging from 80 mm to 150 micron and dividing this sum by 100. Why to Determine Fineness Modulus? Fineness modulus is generally used to get an idea of […]
Effect of fineness modulus of sand on concrete Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Effect of fineness modulus of sand on concrete, quarry, aggregate, and different kinds of minerals.
content also has adverse effect of the strength of concrete due to poor adhesion. Researchers have therefore develop various models for predicting the effect of sand fines and W/C on the strength of concrete. However, there is a gap in literature for the combined effect of sand fines and water/cement ratio's effect on the properties of concrete.
Jan 06, 2018· In air-entrained concrete the effect of fineness of cement on workability is very much less pronounced. Increased Modulus of Elasticity. The 28-day compressive strength & modulus of elasticity of concrete, with or without entrained air, increases with an increase in cement fineness. The difference in compressive strength due to difference in ...
International Journal of Research and Scientific Innovation (IJRSI) | Volume IV, Issue VII, July 2017 | ISSN 2321–2705 Effect of Fineness Modulus of Manufactured Sand on Mechanical Properties of Self Compacting Concrete D. Pavan Kumar*1,C. Sashidhar2 1 Reserach Scholar, Ph.D, Department of Civil Engineering, Jawaharlal Nehru Technological University, Anantapur, India 2 Professor, Department ...
Oct 03, 2018· Fineness Modulus is an indication grading of particle size. More the value of FM more coarser the aggregate is. Now because density vary with particle size, and also the void spaces inside the concrete is a function of aggregate size, it is very i...
Effect of fineness modulus of manufactured sand on fresh properties of self-compacting concrete Article (PDF Available) in Indian Concrete Journal 92(1):77-81 · January 2018 with 349 Reads
without leaving air entrapped inside or on surface of SCC. Figure (1) and table (10) shows the results of slump test with different fineness modulus and grading zones. This figure show that the slump increase with increasing of fineness modulus because increase of fineness modulus means decreasing in …
Effect of Fineness of Sand on the Cost and Properties of ... · To find out the effect of fineness modulus (FM) of sand on concrete, sand of different FM from 2.0 to 3.0 is chosen. Two sizes of coarse aggregate particles: i.e. 20 & 10 mm, which are generally used in standard concrete mix, were chosen for the investigations. Get price
"Effect of Specific Gravity on Aggregate Varies the Weight of Concrete Cube " ... in weight of concrete cube. If the fineness Modulus is constant, the volume of coarse aggregate increase ... materials such as sand, gravel and crushedstone that are used with a binding medium (such as water,
Changes to the grading of the coarse aggregate portion have less of an effect on overall concrete properties. Aggregate proportioning can be optimized using separate determinations of fine and coarse aggregates and blending techniques to control the FM for a concrete mix. Origins of the Fineness Modulus Concept
It should be reminded that the fineness modulus can not reflect the quality of their grading regions. The sand with the same fineness modulus can have very different grading regions. Therefore, the particle gradation and the fineness modulus should be considered in the preparation of concrete.
Generally the percentage of air entrained in concrete increased with decrease in fineness modulus of sand. Quantity of air appears to be a function of the quantity of No.30-No.50 sand. Effect of grading and quantity of sand on other properties of fresh and hardened concrete is noted.
The sieve sizes are 0.15 mm, 0.3 mm, 0.6 mm, 1.18 mm, 2.36 mm, 4.75 mm, 9.5 mm, 19.0 mm, 38.1 mm and larger increasing in the ratio of 2:1. The same value of fineness modulus may therefore be obtained from several different particle size distributions. In general, however, a smaller value indicates a …
Oct 01, 2016· Interlocking of air in between the sand particles and the film of water tends to push the particles apart due to surface tension and thus increase the volume. But in case of fully saturated sand the water films are broken and the volume becomes equal to that of dry sand. Also read: Bulking of Sand – What, Why & How. 9. Fineness Modulus
Fineness Modulus of Sand for Concrete. Fineness of fine aggregate is related to term fineness modulus; most commonly sand. ... Effect of Fineness of Sand | Construction Aggregate | Concrete - Scribd ... gravel, crushed stone, and air-cooled blast-furnace ..... The fineness modulus must be not less than 2.3 nor more than 3.1, nor vary more ...
Fineness modulus of sand (fine aggregate) is an index number which represents the mean size of the particles in sand. It is calculated by performing sieve analysis with standard sieves. The cumulative percentage retained on each sieve is added and subtracted by 100 gives the value of fineness ...
The proportions of materials vary with different types of concrete. Admixtures that affect the air content, water requirements, and the time ... Fine aggregate is required to be natural sand. 2) Coarse aggregates are required to be crushed limestone or ... The fineness modulus is an indicator of the fineness of an aggregate and is
It has been established that the quantity of air increases from the lowest fineness modulus of sand and attains the peak value at fineness modulus (F.M) of about 2.5 and afterwards decreases sharply. The sand fraction of 300 and 150 micron has shown a marked effect on the quantity of air entrainment.
Fineness modulus defines the size of the of the aggregates on concrete mix design. There area some limits on it though. If you have high modulus of fineness, the tendency of mixture is to have ...
Fineness of fine aggregate is related to term fineness modulus; most commonly sand.Fineness modulus is a measure to define fineness of aggregate precisely it defines coarseness or fineness of aggregate to be used in concrete.
The fineness of the sand plays an important role in the finishability of the concrete mix, and even small changes in fineness can affect finishing. The fineness modulus is a single parameter that describes the grading curve and can be useful in checking the uniformity of grading.
The Role of Aggregate in Concrete ... The fineness modulus (FM) is an index of the fineness of an aggregate. ... 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.
FINENESS MODULUS OF FINE AGGREGATE TxDOT Designation: Tex-402-A Effective Date: August 1999 1. SCOPE 1.1 This method determines the fineness modulus of concrete fine aggregate used in evaluation of natural and manufactured sands for portland cement concrete. 1.2 The values given in parentheses (if provided) are not standard and may not be exact
Fineness Modulus Method of Concrete Mix Design. The index number, which describes the relative sizes of coarse and fine aggregates, is called as fineness modulus (FM). Fineness modulus is determined separately by sieving coarse and fine aggregates through the following set of sieve.
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