IS 2386 3 1963 Methods of test for aggregates for

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IS 2386 Part III 1963,Reaffirmed,Reaffirmed 1990,Indian Standard. METHODS OF TEST FOR,AGGREGATES FOR CQNCRETE,PART Ill SPECIFIC GRAVITY DENSITY VOIDS 1. ABSORPTldN AND BULKING,Eighth Reprint MARCH 1997,JJDC 691 322 531 75. 0 Copyright 1963,BUREAU OF INDIAN STANPARDS,MANAKBHAVAN 9 BAHADUR SHAH ZAFAR MARG. NEW DELHI 110002,Gr 5 October 1963,I s 2386 Paq III 1963.
Indian Standard,METHODS OF TEST FOR,AGGREGATES FOR CONCRETE. PART III SPECIFIC GRAVITY DENSITY VOIDS,ABSORPTION AND BULKING. Cerhent and Concrete Sectional Committee BIIC 2,Chairman pWS lling. SHRI K K NAM IAR The Concrete Association of India Bombay. SHR 1 v TIXADAN Y Aiternate to,Sbri K K Nambiar,SHRI K F ANTIA M N Dastur Co Private Ltd Calcutta. SHRI P S BHATNACAR Bhakra Dam Designs Directorate New Delhi. R I C DOS M PArS CUDDC J Central Water 82 Power Commission Ministry of. Irrigation Power,SHRI Y k MVRTHY Altemote, SHRI N D DAFTARY Khira Steel Works Private Ltd Bombav.
S r 1 N G DEWAN Central Public Works Departmknt,SUPERINTENDING ENGINE R. ZNDCIRCLE Al male, DR R R HATTIANoADI The Associated Cement Companies Ltd Bnmbay. SIiRI v N PA1 crn,SHR P C HAZRA Geological Survey of India Calcutta. JOINT DIHI CTOR STANDARDS Rexarc Designs 6 Standards Organization. Mnustry of Kailways,Bz DIRECTOR STAND,ARDS B S A emote. SHRI S B JOSHI S b Joshi Co Private Ltd Bombay,StIRIM M LAL U P Government Cement Factory Churk.
SHRI B N MAJUUDAR Directorate General of Supplres B Disposals. Ministry of Economic Defence Co ordination,RI P L DAS Alkrnalr. Pao S R MEHRA Central Road Research Institute CSIR. SARI N v MOHILE The Concrete Association of India Bombay. SHRI S N MuaERJt Government Test House Calcutta,SRRI N C SEN GUPTA Alfematc. SHIU ERACH A NADIR SHAII Institution of Engineers India Calcutta. sxku C B PATEL National Buildings Organisatlon Ministry of. Works Housing Rehabilitation,Y RI RABINDERSINGH AU17note. PROPG S RAMA WAMY Central Building Research Institute CSXR j. SHRI K SIVA PRMAD Alturnafe,Conhued on age 2,BUREAU OF INDMN STANDARDS. MANAK BHAVAN 9 BAHADUR SHAH ZAFAR MARG,NEW DELHL 110002.
IS Z386 PartIII 1963,Aidhnbers Rdnanring,SHU T N S RAO Gammon India Ltd Bombay. Sum S R PINHEIR Altmrok,RxPuEusNTATtvz Martin Burn Ltd Calcutta. Sstsu Nmm Clurmlu ROY Dalmia Cement Bhatat Ltd Calcutta. f CRETARY Central Board of Irrigation Power Ministry of. Irrigation Power, Bmo G S Strmr Engineer in Chief s Branch Army Headquarters. SHRI R S MEHANDRU Alhrnal,I r SVBBARAJU Indian Roads Congress New Delhi. Sanr J M Tarsum Roads Wing Ministry of Transport Commu. Sum N H Kzsw l Afkra,DaH C bWIWARAYA Director IS1 Ex odiicioMrmbcr.
Deputy Director Bldg,Stint A Parrtitvt RAJ,Extra Assistant Director Bldg IS1. Concrete Subcommittee BDC 2 2,Sm S B Josut S B Joshi Co Private Ltd Bombay. Asstttv DIRECTOR STANDARDS Research Designs Standards Organization. Ministry of Railways, Sn H BHAGWANANX Engineer in Cl f s Branch Army Headquarters. DR I d l s M Pm Cunnou Central Water Power Commission Ministry of. Irrigation Power,Sum Y K MURRIY Alkmatc, S nr P L DUI Directorate General of Supplies Disposals. Ministry of Economic Defence Co ordination,St ntr B N MAJ AR Altemah.
DlREClDR Engineering Research Laboratory Hyderabad. Sum V N GUNAJ Maharashtra Public Works Department, Srrnt M A HAPEEZ National Buildings Organisation Ministry of Work. Housing Rehabilitation,Snttx B S SHIVAYURTHY A mate. SHRI G L fiNDA Central Water Power Commission Ministry of. Irrigation Power,Sum P C HAZRA Geological Survey of India Calcutta. Snm K K NAM IAR The Concrete Association of India Bombay. Sum C L N IYENGAR Alternate,ti M L PURI Central Road Research Institute CSIR. PROP G S RAMA VAB Y Cent tarfeilding Research Institute CSIR. SHRI K SIVA PRASAD Alternate,SHRI T N S RAO Gammon India Ltd Bombay.
SXRI S R P NHEIRO Aftemate, SIJPP IRENDING ENGINEER ZND Central Public Works Department. SHRI 0 P GGEL Altemnte, SHRI J M TREHAN Roads Wing Ministry of Transport Communi. Smr R P StttKA Alternate, SHRI H T Ym Braith h Uw B Jessop cGnstructi0n CG La. IS 2386 Part III 1963,Indian Standard,METHODS OF TEST FOR. AGGREGATES FOR CONCRETE,PART III SPECIFIC GRAVITY DENSITY VOIDS.
ABSORPTION AND BULKING,0 FOREWORD, 0 1This Indian Standard Part III was adopted by the Indian. Standards Institution on 22 August 1963 after the draft finalized by. the Cement and Concrete Sectional Committee had been approved by. the Building Division Council, 0 2 One of the major contributing factors to the quality of concrete is the. quality of aggregates used therein The test methods given in this. standard are intended to assist in assessingthe quality of aggregates In. a given situation for a particular aggregate it may not be necessary to. assessall the qualities and therefore it is necessary to determine before. hand the purpose for which a concrete is being used and the qualities of. the aggregate which require to be assessed Accordingly the relevant. test methods may be chosen from amongst the various tests covered in. this standard For the convenience of the user the test methods are. grouped into the following eight parts of Indian Standard Methods of. Test for Aggregates for Concrete IS 2386 1963,Part I Particle Size and Shape. Part II Estimation of Deleterious Materials and Organic. Impurities, Part III Specific Gravity Density Voids Absorption and Bulking. Part IV Mechanical Properties,Part v Soundness, Part VI Measuring Mortar Making Properties of Fine Aggregate.
Part VII Alkali Aggregate Reactivity,Part VIII Petrographic Examination. 0 3 The Sectional Committee responsible for the preparation of this. standard has taken into consideration the views of the concrete specialists. testing authorities consumers and technologists and has related the. standard to the practices followed in the country in this field Further. the need for international co ordinatiod among standards prevailing in. ISt2386 PartIII L1963, different countries of the world has also been recognized These con. siderations led the Sectional Committee to derive assistance from the. published standards and publications of the following organizations. British Standards Institution,American Society for Testing and Materials. 0 4 Wherever a reference to any Indian Standard appears in these. methods it shall be taken as a reference to its latest version. 0 5 For the purpose of deciding whether a particular requirement of this. standard is complied with the final value observed or calculated. expressing the result of a test or analysis shall be rounded off in accord. ance with IS 2 1960 Rules for Rounding Off Numerical Values Revised. The number of significant places retained in the rounded off value. should be the same as that of the specified value in this standard. 0 6 This standard is intended chiefly to cover the technical provisions. relating to testing of aggregates for concrete and it does not include all. the necessary provisions of a contract, 1 1 This standard Part III covers the following tests for aggregates for. a Determination of specific gravity and water absorption. b Determination of bulk density and voids, c Determination of necessary adjustment for bulking of fine.
aggregate field method and, d Determination of surface moisture in fine aggregate field. 2 DETERMINATION OF SPECIFIC GRAVPPY AND WATER,ABSGRPTION. 2 1 Object i This test covers the procedures for determining the specific. gravity apparent specific gravity and water absorption of aggregates. Nor 1 Threl main methods are specified for use according to whc r. he e of the aggregate is large than 10 mm Method I between 40 mm. and 10 mm Method I or II may be used or smaller than 10 mm Method III. An alternate method Method IV is al 30 permitted, Nora 2 The C r absorptiontest willnot alwaysbe reproduciblewithaggregatu. Is 2386 PartIll 1963,2 2 Method I Aggregate Larger than 10 mm. 2 2 1 Apparatus The apparatus shall consist of the following. 4 Balance A balance or scale of capacity not less than 3 kg. readable and accurate to O 5 g and of such a type and shape as. to permit the basket containing the sample to be suspended from. the beam and weighed in water, b Oven A well ventilated oven thermostatically controlled to.
maintain a temperature of 100 to 110, 4 A wire basket of not more than 6 3 mm mesh or a perforated. container of convenient size preferably chromium plated and. polished with wire hangers not thicker than one millimetre for. suspending it from the balance, 4 A stout watertight container in which the basket may be freely. 4 Two dry soft absorbent cloths each not less than 75 x 45 cm. f A shallow tray of area not less than 650 ems, g An airtight container of capacity similar to that of the basket. 23 2 Sample A sample of not less than 2 000 g of the aggregate. shall be tested Aggregates which have been artificially heated shall not. normally be used If such mat xl is used the fact shall be stated in the. report Two tests shall be made and it is recommended that the two. samples should not be tested concurrently, 2 2 3 Test Procedure The sample shall be thoroughly washed to remove. finerparticles and dust drained and then placed in the wire basket and. immersed in distilled water at a temperature between 22 C and 32 C with. a cover of at least 5 cm of water above the top of the basket. 2 2 3 1 Immediately after immersion the entrapped air shall be. removed from the sample by lifting the basket containing it 25 mm above. the base of the tank and allowing it to drop 25 times at the rate of about. one drop per second The basket and aggregate shall remain completely. immersed during the operation and for a period of 24 f l 2 hours. afterwards, 2 233 The basket and the sample shall then be jolted and weighed.
in water at a temperature of 22 to 32 If it is necessary for them to. be transferred to a different tank for weighing they shall be jolted 25. times as described above in the new tank before weighing weight A. 2 2 3 3 The basket and the aggregate shall then be removed from the. water and allowed to drain for a few minutes after which the aggregate. shall be gently emptied from the basket on to one of the dry clothes and. the empty basket shall be returned to the water jolted 25 times and. weighed in tiater weight 4,lst23as P la 1963, 233 4 The aggregate placed on the dry cloth shall be gently. surface dried with the cloth transferring it to the second dry cloth when. the first will remove no further moisture It shall then be spread out not. more than one stone deep on the second cloth and lest exposed to the. atmosphere away from direct sunlight or any other source of heat for not. less than 10 minutes or until it appears to be completely surface dry. which with some aggregates may take an hour or more The aggregate. shall be turned over at least once during this period and a gentle current. of unheated air may be used after the first ten minutes to accelerate the. drying of difficult aggregates The aggregate shall then be weighed. NO If the spparcnt spcci6c gravity onIy ia rcquimd the opaztiom described. in 2 2 3 4 may be omit d, 2 235 The aggregate shall then be placed in the oven in the. shallow tray at a temperature of IO0 to 110 C and maintained at this. temperature for 24 f l 2 hours It shall then be removed from the oven. cooled in the airtight container and weighed weight C. 2 2 4 Cizlc tions Specific gravity apparent specihc gravity and water. absorption shall be calculated as follows,speciiicgravity Bc A. Apparent specificgravity,Water absorption percent of dry weight C. B ihe weight in g of the saturated surkedry aggregate in. C the weight in g of ovendried aggregate in air, 2 23 R6pWting of Re sl The individual and mean results shall be.
reported The size of the aggregate tested shall be stated and whether. it has heen artificially heated,23 MethodlI Aggq e tupecn4O WdlO. 23 1 A rmtus The apparatus shall consist of the following. a Balartce A balance or scale of capacity not less than 3 kg. readable and accurate to 5 g and of such a type as to permit. the weighing of the vessel containing the aggregate and water. lst2386 Partlu 1963, W Okn A well ventilated oven thermostatically controlled to. maintain a temperature of 100 to 1 10 C, 4 Glass Vcssd or Jar A wide mouthed glass vessel such as a jar. of about 1 5 litres capacity with a flat ground lip and a plane. ground disc of plate glass to cover it giving a virtually watertight. 4 Clotlrs Two dry soft absorbent cloths each not less than. 75 x 45 cm, 4 Guy A shallow tray of area not less than 325 ems. f Coat An airtight container large enough to take the. 23 2 samf c A sample of about one kilogram of the aggregate. shall be used Aggregates which have been artificially heated shall not. normally be used if such material is used the fact shall be stated in the. Two testsshall be made and it is recommended that the two samples. should not be tested concurrently, 23 3 Test Procedue The sample shall be screened on a IO mm IS.
sieve thoroughly washed to remove fine particles of dust and immersed in. distilled water in the glass vessel it shall remain immersed at a tempera. Is 2386 PartIll 1963 2 2 Method I Aggregate Larger than 10 mm 2 2 1 4 b 4 4 4 f gt g gt Apparatus The apparatus shall consist of the following Balance A balance or scale of capacity not less than 3 kg readable and accurate to O 5 g and of such a type and shape as

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