MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG, NEW DELHI

Transcription

1 MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG, NEW DELHI व य पक परर लन म ग़द म र द भ : ईड 2:1/ट त कन क मममत : म ट और क र ट म हय मममत, ईड, 2 र प त कत भ : 1 म म ल इ ज मनयर म ग पररहद क म रखन ल दस य 2 ईड 2 क दस य 3 म रखन ल अय मनक य म ख़दय(यख़ ), न म न ख त म क क म द न : रल ख ख य श हभक ईड CED 2 (10875)WC य ट क र उ ड र न ल ट ड ध त मल म मशम ICS No क पय इ म क क म द क अव क कर और अप म मनतय य बत त ए भ ज नक यनद य म क क प म रक न त त इ पर अम कर म आपक यव य अथव क र ब र म य कन इय आ कत म मनतय भ ज क अ नतम नतनथ 18 मद बर 2016 म मनत यनद क ई त क पय divya.s@bis.org.in पर ईम कर यनद क ई म मनत र त त अथव म मनत म क व भ ह म ब ध र न ई त उपर त र क यथ वत अ नतम प नदय ज एग यनद म म नत तक क रक नत क ई त नवहय नमनत क अ यष क पर म श अथव उ क इ छ पर आग क क यशव क न ए नवहय नमनत क भ ज ज क ब द र क अ नतम प द नदय ज एग य र भ रत य म क यॐर क व ब इ पर भ ध यव द न : उपर न ख त भवद य, रम (न नव इ ज न यर ) (ब क म ह )

2 MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG, NEW DELHI DOCUMENT DESPATCH DRAFTS IN ADVICE WIDE CIRCULATION Reference Date TECHNICAL COMMITTEE: Cement and Concrete Sectional Committee, CED 2 ADDRESSED TO: CED 2:1/T All Members of Civil Engineering Division Council, CEDC 2. All Members of CED 2, 3. All others interested Dear Sir (s), Please find enclosed the following documents: Doc No. CED 2 (10875)WC Title GROUND GRANULATED BLAST FURNACE SLAG SPECIFICATION ICS No Kindly examine the draft and forward your views stating any difficulties which you are likely to experience in your business or profession, if this is finally adopted as National Standard. Last Date for comments: 18 December Comments if any, may please be made in the format as given overleaf and mailed to divya.s@bis.org.in or ced2@bis.gov.in. In case no comments are received or comments received are of editorial nature, you will kindly permit us to presume your approval for the above document as finalized. However, in case comments of technical in nature are received then it may be finalized either in consultation with the Chairman, Sectional Committee or referred to the Sectional Committee for further necessary action if so desired by the Chairman, Sectional Committee. The documents are also hosted on BIS website Thanking you, Yours faithfully, Encl: as above (B K Sinha) Head (Civil Engg.)

3 Doc: CED 2 (10875) October 2016 BUREAU OF INDIAN STANDARDS DRAFT FOR COMMENTS ONLY (Not to be reproduced without the permission of BIS or used as an Indian Standard) Draft Indian Standard GROUND GRANULATED BLAST FURNACE SLAG SPECIFICATION ICS No Cement and Concrete Last date for Receipt of Sectional Committee, CED 2 Comments: 18 December 2016 FOREWORD (Formal Clauses of the foreword will be added later) This Indian Standard specification is an extension of IS12089 specification for granulated blast furnace slag generated by steel industries while producing pig iron. Molten slag produced during Pig Iron production through blast furnace, is very rapidly cooled, this leads to formation of granulated slag a largely amorphous reactive component. This reactive matter is exploited in presence of lime facilitated by Portland cement. Granulated slag mostly contains silicates and aluminates of lime and other basis. Raw slag contains moisture and it is hard material with granular shape. It needs to be dried and ground to adequate fineness to be utilised as cementitious material. The processed form of granulated slag is Ground Granulated Blast Furnace Slag or more commonly known as GGBS GGBS can be used to produce Portland Slag Cement conforming to IS 455 through blending with ground Portland cement clinker at cement factory. It can also be used as a separate material, which is added along with Portland cement in desired proportions at construction site in accordance with IS 456: 2000.

4 In developed countries GGBS has been extensively used as mineral admixture along with Portland cement in concrete to enhanced durability in aggressive environments This Indian Standard is framed to guide customer on technical specifications of GGBS for its use as mineral admixture to concrete. This specification is also in line with IS 456:2000 Doc: CED 2 (10875) October 2016 Draft Indian Standard GROUND GRANULATED BLAST FURNACE SLAG SPECIFICATION 1 SCOPE This Indian standard covers manufacturing, chemical and physical specifications, storage and packing of Ground Granulated Blast Furnace Slag (GGBS) to use as mineral admixture along with Portland cement as a cemetitious component in concrete, mortar and grout. 2 MANUFACTURING GGBS shall be manufactured through drying and grinding of granulated blast furnace slag conforming to IS GGBS shall not contain more than 1 percent of additives which are not harmful, used for the purpose of improving surface characteristics of GGBS 3 COMPOSITION 3.1 Since it is derived from the parent material, granulated slag, and its characteristics are similar to those mentioned in IS GGBS when tested in accordance with IS 4032, shall comply with the requirement as mentioned in Table 1 Table 1-- Chemical Requirement of GGBS (Clause 3.1) Constituent Percent, max Manganese Oxide, MnO 5.5 Magnesium Oxide, MgO 17.0 Sulphide Sulphur 2.0 Sulphite content 3.0 Insoluble residue 3.0 Chloride content 0.1 Loss on ignition 3.0 Moisture Content 1.0

5 Chemical Moduli CaO+MgO+1/3Al2O3 SiO2+2/3 Al2O3 CaO+MgO+Al2O3 SiO2 Not less than 1.0 Not less than 1.0 CaO+MgO+1/2MgO+Al2O3 SiO2+MnO ( For granulated slag with > 2.5 % MnO Not less than 1.5 Glass content ( As per IS 12089) Not less than 85 % 4 COMPRESSIVE STRENGTH For the purpose determining compressive strength of blend containing GGBS, a combination of 30 percent Portland cement conforming to I S 269 (43 G /53G OPC) and 70 percent GGBS is tested for mortar cubes. The compressive strength of blend determined as per IS 4031 part 6 shall not be less than 22 MPa at 7days and not less than 33 MPa at 28 days. The same blend is subjected to determination of setting time and soundness in accordance with IS 4031 part 5 and part 3 respectively. 5 PHYSICAL CHARATERISTICES 5.1 The physical characteristics of GGBS shall comply with the requirement of Table 2. Table 2 -- Physical requirement of GGBS (Clause 5.1) Constituent Fineness, m 2 /kg ( As per IS 4031 part 2 ) Soundness LeChatlier, mm ( As per IS 4031, part 3 ) Setting Time, Initial ( As per IS 4031, part 5 ) Min/Max 320 min 10 max Not less than IST of control OPC

6 Compressive Strength, ( as per IS 4031 part 6 ) 7 days Min 22 MPa 28 days Min 33 MPa *Slag Activity Index ( SAI) 7 days Not less than 60 % of control OPC 28 days Not less than 80 % of control OPC NOTE -- Slag activity index shall be determined using blend of 50 percent GGBS and 50percent control OPC having total alkalies (Na2O K2O) not less than 0.6 percent and not more than 0.9 percent), blend shall be tested in accordance with IS 4031 Part 6, for determining compressive strength of mortar. SAI to be determined as x PACKING 6.1 The slag shall be packed in bags, jute sacking bag conforming to Woven HDPE conforming to IS 11653, multi wall paper conforming to IS11761or any other suitable bag bearing the manufacturer s name or his registered trade-mark, if any. The words Ground Granulated Blast Furnace Slag, and the number of bags (net mass) to the tonne or the nominal average net mass of the slag shall be legibly and indelibly marked on each bag. Bags shall be in good condition at the time of inspection Similar information shall be provided in the delivery advices accompanying the shipment of packed or bulk slag. 6.2 The average net mass of slag per bag shall be 50 kg or as mutually agreed between the purchaser and the seller. It may also be supplied in loose form in jumbo bags or bulk containers. In case of supply in bulk form/ in bags, each consignment shall carry test certificate The tolerance on the mass of ultrafine slag in each bag or consignment shall be as mutually agreed upon between the purchaser and the supplier. 6.3 Supplies of slag in bulk may be made by arrangement between the purchaser and the supplier (manufacturer or stockist). Note A single bag or container containing 1000 kg and more, net mass of slag shall be considered as the bulk supply of slag. Supplies of slag may also be made in intermediate containers, for example, drums of 299 kg, by agreement between the purchaser and the manufacturer. 6.4 When the slag is intended for export and if the purchaser so requires, packing of slag may be done in bags or in drums with net quantity of slag per bag or drum as agreed to between the purchaser and the manufacturer.

7 6.4.1 For this purpose, the permission of the certifying authority shall be obtained in advance for each export order The words FOR EXPORT and the net quantity of slag per bag/drum shall be clearly marked in indelible ink on each bag/drum The packing material shall be as agreed to between the manufacturer and the purchaser, however, packing should be adequate to comply with environmental norms 7 MARKING 7.1 Each bag of slag shall be legibly and indelibly marked with the following: a) Manufacturer s name and his registered trade-mark; b) The name Ground Granulated Blast Furnace Slag c) Net quantity, in kg; d) The words Use no Hooks on the bags; e) Batch/control unit number in terms of week, month and year of packing; and f) Address of the manufacturer. 7.2 Similar information shall be provided in the delivery advices accompanying the shipment of packed or bulk slag and on drums (see 6.3). 8.3 BIS Certification Marking The slag may also be marked with the Standard Mark The use of the Standard Mark is governed by the provisions of the Bureau of Indian Standards Act, 1986 and the Rules and Regulations made there under. 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. 9 SAMPLING 9.1 A sample or samples for testing may be taken by the purchaser or his representative, or by way person appointed to superintend the work for purpose of which the slag is required or by the latter s representative. 9.2 In addition to the requirements of 9.1, the methods and procedure of sampling shall be in accordance with IS Note: For the purpose of sampling, wherever reference to cement has been made, it may be read as ultrafine material.

8 9.3 The samples shall be taken within three weeks of the delivery and all the tests shall be commenced within one week of sampling. 9.4 When it is not possible to test the samples within one week, the samples shall be packed and stored in air-tight containers till such time that they are tested not later than three months. 10 STORAGE 10.1 GGBS shall be stored in concrete silos protected from entry of moisture and free from dampness, internal condensation is to be minimised. GGBS packed in paperbacks shall be kept away from ground contact to avoid damage. 11 INSPECTION AND TESTING 11.1 GGBS sample from each batch of manufacturing shall be taken for inspection and testing in accordance with scheme as mentioned in Table 3: Table 3 Scheme for testing GGBS (Clause 11.1) Particulars Frequency of testing Fineness* Daily average sample Setting Time Each batch Soundness Each batch Compressive Strength Each Batch Glass content Once in a month Chemical analysis Each batch Moisture content Each batch * Fineness is to determine on hourly basis as a control parameter. 12 TEST CERTFICATE 12.1 GGBS supplier shall submit test certificate of each batch. The information provided in the test certificate shall comply with this standard and it shall contain, Physical and chemical requirements including chloride content, moduli values, glass content and batch no 12.2 For GGBS exports, buyer and seller can mutually agree on additional specifications apart from mandatory requirement of standard 13 TESTS The sample or samples of ultrafine slag for tests shall be taken as per 10 and shall be tested in the manner prescribed in the relevant clauses. ANNEX A

9 (Clause 2) LIST OF REFERRED STANDARDS IS No. Title IS 269:2015 Specification for ordinary Portland cement(sixth Revision) IS 455 Specification for Portland slag cement (Fifth Revision). IS 456:2000 Specification for plain and reinforced Concrete (Fourth Revision). IS 3535:1986 Methods of sampling hydraulic cement (First Revision) IS 4031(Part 1):1996 Methods of physical tests for hydraulic cement: Part 1 Determination of fineness by dry sieving (Second Revision) IS 4031(Part 2):1999 Methods of physical tests for hydraulic cement: Part 2 Determination of fineness by specific surface by Blaine air permeability method (Second Revision) IS 4031(Part 3):1988 Methods of physical tests for hydraulic cement: Part 3 Determination of soundness(first Revision) IS 4031(Part 4):1988 Methods of physical tests for hydraulic cement: Part 4 Determination of consistency of standard cement paste (First Revision) IS 4031(Part 5):1988 Methods of physical tests for hydraulic cement: Part 5 Determination of initial and final setting times (First Revision) IS 4031(Part 6):1988 Methods of physical tests for hydraulic cement: Part 6 Determination of compressive strength of hydraulic cement other than masonry cement (First Revision) IS 4031(Part 7):1988 Methods of physical tests for hydraulic cement: Part 7 Determination of compressive strength of masonry cement (First Revision) IS 4031(Part 8):1988 Methods of physical tests for hydraulic cement: Part 8 Determination of transverse and compressive strength of plastic mortar using prism (First Revision) IS 4031(Part 9):1988 Methods of physical tests for hydraulic cement: Part 9 Determination of heat of hydration (First Revision) IS 4031(Part 10):1988 Methods of physical tests for hydraulic cement: Part 10 Determination of drying shrinkage (First Revision) IS 4031(Part 11):1988 Methods of physical tests for hydraulic cement: Part 11 Determination of density (First Revision) IS 4031(Part 12):1988 Methods of physical tests for hydraulic cement: Part 12 Determination of air content of hydraulic cement mortar (First Revision) IS 4031(Part 13):1988 Methods of physical tests for hydraulic cement: Part 13 Measurement of Water Retentivity of Masonry Cement (First Revision) IS 4032:1985 Method of chemical analysis of hydraulic cement (First Revision) IS 11652: 2000 Textiles - Woven Sacks for Packing Cement - High Density

10 IS 11761:1997 IS : 1987 IS : 2003 Polyethylene (HDPE)/Polypropylene (PP)(Second Revision) Specification for Multi wall paper sacks for cement (First Revision) Specification for Granulated Slag for the Manufacture of Portland Slag Cement Specification for Silica Fume