In general, 40mm size aggregate used for normal strengths and 20mm size is used for high strength concrete. the size range of various coarse aggregates given below. Coarse aggregate. Size. Fine gravel. 4mm 8mm. Medium gravel. 8mm 16mm. Coarse gravel. 16mm 64mm..Metric Size 38 mm 25 mm 20 mm 12.5 mm 10 mm 4.75 mm 2.50 mm 1.12 mm 0.6 mm 0.3 mm 0.15 mm 0.075 mm International 37.5 mm --- 19 mm --- 9.5 mm 4.75 mm 2.36 mm 1.18 mm 0.6 mm 0.3 mm 0.15 mm 0.075 mm Not used in FM Calculation . 2122015 13 25 Aggregate Size Effects As the maximum size aggregate increases, the amount of paste needed for a ....Jan 01, 2002 Aggregate stone numbers refer to aggregates that meet the grading requirements listed in Table 2 of ASTM C 33, Standard Specification for Concrete Aggregates. The larger the number, the smaller the size of the stone. Stone number is defined by the amount of an aggregate that will pass through specific sieves by mass percent.
Read MoreMar 23, 2015 On the other hand in smaller size aggregates the surface area is increased which increases wc ratio and lower strength is achieved. In general for strength upto 200 kgcm 2 aggregates upto 40 mm may be used and for strength above 300 kgcm 2 aggregate upto 20 mm may be used. Conditions That Decide Maximum Size of Coarse Aggregate to be Used in ....3. Maximum aggregate size-- The largest maximum aggregate size that will conform to the following limitations Maximum size should not be larger than 15 the minimum dimension of structural members, 13 the thickness of a slab, or 34 the clearance between reinforcing rods and forms. These restrictions limit maximum aggregate size to 1.5 ....Fine aggregate From Table 3 for zone-I Fine aggregate and 20 mm maximum size of aggregate, WC ratio 0.4 found to be 44 53. For consideration of grading of Table 4 let it be 45 Fine aggregate 1952 x 0.45 878 kgm 3 Coarse aggregate 1952 878 1074 kgm 3 10 and 20 mm aggregate are single sized as per IS 383-1970.
Read MoreStep 5 Estimation of Coarse Aggregate proportion-From Table 3 of IS 10262- 2009, For Nominal maximum size of aggregate 20 mm, Zone of fine aggregate Zone II. And For wc 0.5. Volume of coarse aggregate per unit volume of total aggregate 0.62. Table for correction in estimation of coarse aggregate proportion.Saturated surface dry aggregate ANGULAR Fine Aggregate natural sand conforming Zone II of Table 4 of IS 33383-1970 wc is 0.6 by mass Workability corresponding to Compacting Factor of 0.8 3.3.2 amp Table 4 IS10262-1982 Page 9amp10 NOMINAL MAX SIZE OF AGGREGATES mm SAND AS of TOTAL AGGREGATE BY ABSOLUTE VOLUME 10 200 28 20 ....NOTE In the above table, the proportion of the fine to coarse aggregates should be adjusted from the upper limit to lower limit progressively as the grading of fine aggregates becomes finer, and the maximum size of the coarse aggregate becomes larger, graded coarse aggregate shall be used. I.e. for an average grading of fine aggregate that is Zone II- IS 383- Table 4.
Read MoreHowever, the compressive strength tends to increase with the decrease in size of aggregate. IS 4562000 and IS 13431980 recommend that the nominal size of the aggregate should be as large as possible. 5. Grading and type of aggregate. The grading of aggregate influences the mix proportions for a specified workability and water-cement ratio..Plum concrete in use maximum M10 Grade concrete in this concrete aggregate of maximum size 25mm. Plum will comprise of black trap basalt of crushing strength of minimum 100 Kg Sq.cm. Plum concrete density 1650 kgCubic.meter.May 17, 2017 Volume of Aggregate Aggregate CementSandAggregate x 1.57. Density of aggregate may go higher if void spaces decreases. 5mm aggregate has more density when compared with 20mm size of aggregate. Hence We require 1326Kg of 20mm aggregate for 1m 3 of Concrete. Amount of Water Required for 1m 3 of Concrete-
Read MoreJul 28, 2020 The M20 Grade Concrete comes in a mix ratio of 11.53.1 cement.1.5 sand and three aggregate. TheM20 stands for the mixture of aggregate, sand, and cement prepared so as the whole cement concrete cube of size becomes 154 cm by 15cm by another 15 cm..Apr 06, 2020 Fine aggregate is also known as sand. 2 Coarse aggregate- The aggregate whose size is greater than 4.75 mm is known as coarse aggregate. Stone is also known as coarse aggregate. The size of aggeregates comonly used for prepairing different grade of concrete are given below..For a list of fine aggregate sources, see QPL 1. 2. Grades Use fine aggregate for cushion with less than 10 percent total silt and clay. Grade as follows Size Percent by Weight Passing No. 4 4.75 mm sieve 100 Passing No. 16 1.18 mm sieve 25-75 Passing No. 100 150 m sieve 0-25
Read MoreFill 12 square feet with custom aggregate For the second example, lets now say that I have an area of 12 ft that I want to fill with an aggregate material. The base is to a depth of 4 inches. I will use a custom material of unknown density which weighs 200 lb per four cubic feet and costs 60 per US short ton..May 15, 2002 Size Equivalents. Two scales that are used to classify particle sizes are the US Sieve Series and Tyler Equivalent, sometimes called Tyler Mesh Size or Tyler Standard Sieve Series. The most common mesh opening sizes for these scales are given in the table below and provide an indication of particle sizes. US Sieve. Size..In a large paved area such as a patio or driveway, gravels size can create a stable surface. For a patio, select gravel that is 38- to 34-inch in diameter. A driveway needs layered gravel to provide stability for vehicles. Start with a layer of stones about the size of baseballs
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