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Archived - Portland Cement Concrete Testing Manual
fineness modulus is also used to monitor the uniformity of the fine aggregates. For the purposes of this test fine aggregate is defined as that material that passes the 318 inch sieve. It is important the fineness modulus is within the acceptable range of the material used in the mix design since a finer sand would increase the water demand and ...
Effect of Fineness of Sand on the Cost and Properties of Concrete
Fineness Modulus of Sand affects Compressive and flexural strength of Concrete. Sand, with higher FM, results in higher strength of concrete. It is evident by cost benefit ratio that overall concrete mix is becoming economical if we use sand with higher FM. The results indicate that with the increase in FM, workability gets affected considerably.
Influence of wollastonite on mechanical properties of concrete
Incorporation of fly ash made concrete mix more workable while wollastonite decreased workability of mixes and necessitated the use of plastisizer . Comparing strength results of control mix A with that of cement-fly-ash concrete mix B, there was reduction in 28 day compressive and flexural strengths. Thereafter at 56 day ,
CHAPTER 3 - PHYSICAL PROPERTIES OF LIGHTWEIGHT AGGREGATE
normalweight sand, a wide range of concrete densities may be obtained. Aggregates for structural lightweight concrete usually have a top size of minus 3/4 in. or minus 1/2 in. Most lightweight concretes use a lightweight coarse aggregate 3/4 in. to #4 mesh (1/2 - #8) with ordinary sand, minus #4 mesh (minus 4.8 mm), however other combinations of
Characteristics Properties and Microstructure Analysis of Concrete by Replacing Natural Sand by M-Sand
various tests on natural sand such as specific gravity, fineness modulus, silt content, bulk density etc. At the same time, tests are carried out on cement, coarse aggregates and chemical admixtures used for the mix design. Later, the natural sand in concrete is
What are the Materials for Replacement of Sand in Concrete
Granulated blast furnace slag is a waste of steel industry; its use can be best exploited as part replacement of sand in concrete. It can replace sand to the amount of 70 % in concrete mixes. Its Availability is limited, restricted to steel plant area.
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Use of Blast Furnace Slag Aggregate in Concrete
Use of Blast Furnace Slag Aggregate in Concrete K.G. Hiraskar and Chetan Patil Abstract-The Iron industries produce a huge quantity of blast furnace slag as by–product, which is a non–biodegradable waste material from that only a small percentage of it is used by cement industries to manufacture cement.
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THE ROLE OF FINENESS MODULUS
Jul 20, 2018 · Fineness modulus also provides important information about the density of the resulting concrete, as well as its compressive strength. Both of these factors must be taken into consideration when designing the concrete. For more information about the role played by fineness modulus, contact the concrete experts at Southport Concrete Corp.
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ROBO sand: ROBO sand or crusher dust obtained from local granite crushers was used in concrete to cast the cubes and cylinders. The bulk density of ROBO sand or crusher dust is 1768 kg/m3. The specific gravity and fineness modulus of ROBO sand are 2.66
The properties of concrete made with fine dune sand
In Oman, Al Harthy et al. (2007) investigated the properties of concrete made with dune sand, which was partially introduced (10-100%) as fine aggregate into the mix. It was found that the optimum ...
CHAPTER 3 PROPERTIES OF MATERIALS
Sl.No. Fineness Modulus Nature of sand 1 2.2 – 2.6 Fine sand 2 2.6 – 2.9 Medium sand 3 2.9 – 3.2 Coarse sand Sand having a fineness modulus more than 3.2 will be unsuitable for making satisfactory concrete. The fineness modulus values obtained for sand, quarry dust and coarse aggregate are given in Tables 3.7 to 3.9.
QUALITY CONTROL/QUALITY ASSURANCE
The fineness modulus is an indicator of the fineness of an aggregate and is most used for evaluating fine aggregates. The higher the number, the coarser the aggregate. The fineness modulus is computed by adding the in., No. 4 ...
Properties of Aggregates
Fineness Modulus. 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. Fineness modulus is generally used to get an idea of how coarse or fine the aggregate is.
2 Concrete Materials
2-1 CHAPTER TWO: CONCRETE MATERIALS PCCP is normally constructed with paving concrete described in Section 500.The proportions of materials vary with different types of concrete. Admixtures that affect the air content, water requirements, and the time
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Mix designs for concrete block
gate fineness modulus, proportion-ing aggregates, and choosing a ce-ment-aggregate ratio. The fineness modulus method The most commonly used method for designing mixes for concrete masonry is called the FM
Important Questions of BMC
2018/01/09 · 1.If p is the standard consistency of cement the amount of water used in conducting the initial setting time test on cement is a)0.65 p b) 0.85 p c) 0.6 p d) 0.8 p 2.For complete hydration of cement the w/c ratio needed is a)less than 0.25 b)more than 0.25 but less than 0.35 c)more than 0.35 but less than 0.45 d)more than 0.45 but less …
An Experimental Investigation on Strength Properties of
civil industries is more all over the world. Sand is main ingredient used as fine aggregate in concrete-mix for constructions purpose. For the purpose of environment it is necessary for us to partially or complete replacement of sand by artificial sand as a fine-aggregate in high performance concretes (HPC).
Mechanical and Durability Properties of Concrete Made
In recent years, the construction industry has been faced with a decline in the availability of natural sand due to the growth of the industry. On the other hand, the metal casting industries are being forced to find ways to safely dispose of waste foundry sand (FS). With the aim of resolving both of these issues, an investigation was carried out on the …
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How Are Aggregates Used in Concrete? | A.L. Blair
The fineness of aggregates is measured using the fineness modulus (FM). The FM for fine aggregates should be within the range of 2.3 to 3.1. Aggregates that are too fine will have a high water demand, and will also result in a sticky concrete mix.
CHAPTER 2 SIEVE ANALYSIS AND FINENESS MODULUS Sampling
CHAPTER 2 SIEVE ANALYSIS AND FINENESS MODULUS Sampling Since the reason for sampling aggregates is to determine the gradation (particle size) of the aggregate, it is necessary that they be sampled correctly.
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USBR Method of Concrete Mix Proportioning
Sep 28, 2013 · Approximate air and water contents and the percentages of sand coarse aggregate per cubic meter concrete are determined from the table 4, for concrete containing natural sand fineness of modulus 2.75 and having workability of 75 to 100m.
The effect of using low fines content sand on the fresh and
Local mining sand (low fines content sand) with fineness modulus and saturated-surface-dry specific gravity of 2.9 and 2.55 was used. It should be noted that the fineness modulus of standard sand was around 2.76. Grading of low fines content sand is shown in Fig. 1. Maximum nominal size, SSD specific gravity and 24 h water absorption of used ...
how to find fineness modulus of sand?
how to find fineness modulus of sand?.. Answer / engr. muhammad arif Fineness Modulus of sand may be define as sum of cumulative % age retained on standard sieves (4,8,16,30,50 and 100) divide by 100. Is This Answer 3 No ...
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