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IS CODE 383 PDF

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IS - - Download as PDF File .pdf), Text File .txt) or read online. The BIS code discusses the selection of aggregates for Concrete and structure works. download BIS IS COARSE AND FINE AGGREGATE FOR CONCRETE - SPECIFICATION from SAI Global. Coarse aggregate of different sizes may be combined in suitable proportions so as result in an overall grading conforming to Table 2 of IS – for.


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IS Coarse and Fine Aggregate for Concrete - Specification. byBureau of Indian (For more information: 12 Tables of Code) Name of. “Knowledge is such a treasure which cannot be stolen”. IS (): Specification for Coarse and Fine Aggregates. From Natural Sources For Concrete [CED. The BIS code discusses the selection of aggregates for Concrete and structure works. Guide the designer in choosing corr.

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Where the Sl No. This tolerance shall not be applied to percentage passing Table 6 Additional Requirements for Copper Slag the m IS Sieve or to percentage passing any other Aggregate sieve size on the coarse limit of Grading Zone I or the Clause 5.

Designation Passing 4. Designation iv 4. IS Sieve is increased to 20 percent. This does not affect the 5 percent allowance permitted in 6. The most suitable fine to coarse ratio to be used for any particular mix will, 8. The amount of material required for each test and shall be as specified in the relevant method of test given in IS Part 1 to IS Part 8. Where so required by the Part 2. All other tests shall be carried out as described downloadr, the aggregate may be supplied in bags jute, in IS Part 1 to IS Part 8 and in this jute-laminated, polyethylene lined or as may be standard.

383 pdf code is

The tolerance on the quantity of aggregate information: in each bag or consignment shall be as per 9. Graded coarse aggregates may be supplied in the nominal sizes given in Table 7. The grading of the allin-aggregate, when analyzed, as described in IS Part 1 shall be in accordance with Table Necessary adjustments may be made in the grading by the addition of single-sized aggregates For any one of the nominal sizes, the The method of sampling shall be in accordance with Table 7 Coarse Aggregates Clauses 6.

IS Sieve Designation 1 2 i ii iii iv v vi vii viii ix 80 mm 63 mm 40 mm 20 mm 16 mm Percentage Passing 4 90 to 0 to 10 90 to 0 to 10 90 to 0 to 10 90 to 0 to 10 0 to 0.

IS Sieve Designation 1 2 i ii iii iv v vi vii 10 mm 4. This does not affect the 5 percent allowance permitted in 6. The most suitable fine to coarse ratio to be used for any particular mix will, however, depend upon the actual grading, particle shape and surface texture of both fine and coarse aggregates.

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The amount of material required for each test shall be as specified in the relevant method of test given in IS Part 1 to IS Part 8.

Where so required by the downloadr, the aggregate may be supplied in bags jute, jute-laminated, polyethylene lined or as may be mutually agreed between the downloadr and the supplier bearing the net quantity may be 25 kg, 50 kg, kg, 7 IS The tolerance on the quantity of aggregate in each bag or consignment shall be as per 9.

The number of bags in a sample shall be as given below: Batch Size to to to to 1 1 to 3 3 and over h Sample Size j 20 32 50 80 k m The bags in a sample shall be selected at random see IS Also the minus error in none of such bags in the sample shall exceed 4 percent of the specified net quantity of aggregate in the bag. The details of conditions under which a license for the use of the Standard Mark may be granted to manufacturers or producers may be obtained from the Bureau of Indian Standards.

The calcined lime used as flux combines with the silicates, aluminum oxides, magnesium oxides, manganese oxides and ferrites to form steel furnace slag, commonly called steel slag. Steelmaking slag contains about 10 to 20 metallic iron percent by mass, and is recovered by magnetic separation. The metal free slag is crushed and screened to different sizes for use as aggregates. For use as aggregates, the steel slag is subjected to weathering process natural or accelerated to reduce the free lime content in the slag.

Figure 3 shows typical steel slag aggregate. The slag after cooling can be further crushed and screened to produce different sizes of aggregates.

Figure 1 shows typical air-cooled iron slag aggregate.

Several of the key chemical properties are provided but the physical property of greatest concern is the high level of porosity compared to that present in naturally derived aggregates, which contributes to high absorption capacities. This is important during construction, as the moisture condition of the aggregate will impact workability and early-age, shrinkage-related cracking, if the aggregate is not kept sufficiently moist prior to batching. It may also have long-term ramifications on in service durability, depending on the level of saturation those aggregates are subjected to either at the bottom of the slabs or in the vicinity of joints and cracks.

This results in vitrified glassy material with a sandlike appearance, with particles typically 1 mm to 5 mm size. It is a light weight aggregate, which needs further processing to improve the bulk density to more than 1. Figure 2 shows typical granulated iron slag aggregate. Copper slag is produced as a byproduct from copper smelter, while producing copper from copper concentrate copper pyrite through pyrometallurgical process.

The copper slag thus generated is quenched with water to produce granulated copper slag. RA can be used as coarse aggregate and RCA can be used as coarse and fine aggregates in accordance with this standard.

This aggregate has potential for use as fine aggregate in accordance with provisions of this standard see Fig.

IS 383: Specification for Coarse and Fine Aggregates From Natural Sources For Concrete

As a guide the values given in Table 11 may be followed as the permissible values. This however, requires necessary care while producing aggregates to ensure their efficacy in their use as part of concrete.

This paste reduces the specific gravity and increases the porosity compared to similar virgin aggregates.

Pdf 383 is code

Higher porosity of RCA leads to a higher absorption. Recycled aggregate RA will typically have higher absorption and lower specific gravity than natural aggregate. The concrete rubble has to be properly processed, including scrubbing to remove the adhered hydrated cement as much as possible. When requested by the downloadr or his representative, the supplier shall provide the following particulars: Accordingly, the list of trade groups given in C In order to avoid lengthy descriptions, it may be convenient to apply to distinctive group types of aggregates some general term which could be adopted.

With certain materials, however, it may be necessary to use a combined description with more than one group number for an adequate description of the surface texture, for example, crushed gravel 1 and 2; oolites 3 and 5.

Aggregates derived from such slags show iron unsoundness. Immerse the pieces of first sample in distilled or deionized water at room temperature for a period of 14 days. Remove the pieces from the water at the end of the 14 day period and examine them.

The second test sample shall be tested, if any of the pieces in the above sample shows cracking, disintegration, shaling or craze cracking at the surface of the aggregate. If not more than one in one hundred pieces 1 percent of the two test samples tested shows cracking, disintegration, shaling or craze cracking at the surface of the aggregate, the slag shall be regarded as free from iron unsoundness. This method can also be used to evaluate the effectiveness of weathering processes for reducing the expansive potential of such aggregate materials.

Mix it well to make moisture content uniform, and keep it for not less than 24 h. The samples shall be prepared to meet the grading requirement given in Table January June 2. February 6.

Is 383 Specification for Coarse and Fine Aggregates From Nat.180180049

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