is 6461 ( part 2 ) - 1972 glossary of terms relating to cement concrete - part 2 materials (other...

8/13/2019 Is 6461 ( Part 2 ) - 1972 Glossary of Terms Relating to Cement Concrete - Part 2 Materials (Other Than Cement a

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ISr6461(PutII)-197ndian Standard

GLOSSARY OF TERMS RELATING TOCEMENT CONCRETE

PART II MATERIALS OTHER THAN CEMENT ANDAGGREGATE)First Reprint JULY 1988 )

UIX OOl.U:666.972

@ Co right 1972BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

( Reaffirmed 1997 )


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IS:6461 (PartII)-1972ndian St andard


PART II MATERIALS OTHER THAN CEMENT ANDAGGREGATE )Cement and Concrete Sectional Committee BDC 2

hairman RepresentingC. VISVESVARAYA Cement Research Institute of India, New Delhi

MembersNational Test House, Calcutta

SHRI E. K. RAMACHANDRAN Afternatz 1A. K . CHATTERJ I Central Building Research I nstitute (CSIR ),Roorkee

DR S. S. REHSI ( Alternate)

DR R. K. GHOSH( Alternate )DIIUXTOR ( CSMRS )DEPUTY DIRECTOR CSMRS )Alternate )SHRI K. C. GHOSALSHRI A. K . Bxsw~s ( Alternate )R R. K. GHOSHDR R. R. HATTIANGADISHRI P. J , J AGUS ( Alternate )OINT DIRECTOR, S T A N n A R D s

(B S)DEPUTY DIRECTOR,.~TANDARDS( B S ) ( tern e )SHRI S. B. J OSHISHRI M. T. KANSESHRI KARTIK PRASAD

Alokudyog Services Ltd, New DelhiIndian Roads Congress, New DelhiThe Associated Cement Companies L td, BombayResearch, Designs Standards Organization,Lucknow

S. B. J oshi Co Ltd, BombayDirectorate General of Supplies Disposals,Roads Wing, Ministry of Transport ShippingSHRI S. L. KATHURIA ( Allernate 1Snm S. R. KULKARNI M. N. Dastur Co ( Private ) Ltd, CalcuttaSHRI M. A. MEHTA The Concrete Association of India, Bombay

SHRI 0. MUTHACHEN Central Public Works DepartmentSUPERINTENDING NGINEER,ENDCIRCLE ( Alternate )SHRI ERACH A. NADIRSHAH The Institution of Engineers ( India ), CalcuttaSHRI K . K . NAMBIAR In personal capacityRw6 Raz;Faajar GA tCrescent Park . a . .

Cent;ilbpd Research Institute ( CSI R ), New

Central Water Power Commission, New Delhi

Madras 20 ) _, _.BRIG NARESHPRASAD Engineer-in-Chiefs Branch, Army HeadquartersCOL J . M. TOLANI ( Alternate ) ( Continued on page 2 )BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MAR0

NEW DELHI 110002


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IS:6461 Part II) - 1972Conthuudrom page 1 )

MembersPROF G. S. RAMASWAMY

R~fNttdtlgStru~;te~ginccring Research Ckntre ( CSIR ),

DR N. S. BHAL ( Alternate )DR A. V. R. RAOSmu RAV~NDER AL ( Al~crnatc ) National Buildings Organization, New DelhiSHRI G. S. M. RAOSHRI T. N. S. RAO Geological Survey of India, NagpurSHRI S. R. PINHEIRO AILcrnatc)Gammon India Ltd, BombaySECRETARYSHRIR. P. SHARW Central Board of Irrigation 8 Power, New DelhiIrrigation Power Research Institute, Amritsar

SHRI MOHINDERSINOH Afkrmtc )SHlU G. B. SINQH Hindustan Housing Factory Ltd, New DelhiSHRI c. L. KAsLIWAL ( ~ ?7l ? )SHRI J . S. SINGHOTASHRI A. M. SINQAL Altcrnofe ) Beas Designs Organization, Nangal TownshipSHRI K. A. SUBRAMANIAM The India Cements Ltd, MadrasSHRIT. S. RAMACHANDRAN Alternate )SHRI L. SWAROOPSHRI A. V. RAMANA ( Altrmate Dalmia Cement ( Bharat ) Ltd, New DelhiSHRI D. AJITHASIMHA,Director ( Civ Engg ) Director General, BIS ( Ex-o i0 Member )

SHRI Y. R. TANEJADeputy Director ( Civ Engg ), BIS

Concrete Subcommittee BDC 2 : 2Convsw

SHRI S. B. J OSHI S. B. J oshi Co Ltd, BombayMambcrsDR S. M. K. CHZTTY Cenr;~ork~dlding Research Institute ( CSIR )

SHRI C. A. TANBJA ( AlternateSHRI B. K. CHOKSI In personal capacity ( Shrikunj Near ParkashDEPUTY DIRECTOR, Housing Soci+y, Athwa L s. Swat 1)

(B S)STANIJARDS Rese~;~aro~essgns Standards Organization,

ASSISTANT IRECTOR,STANDARDS( M/C ) ( Alternafe )DIRECXORDIRECTOR(C MDD) Engineering Research Laboratories, HyderabadCentral Water Power Commission, New DelhiDEPUTY DIRUXOR ( C MDD )( Altarnate )SIIRI V. K. G~NBKAR Stru~tct~e5ngineering Research Ccntre ( CSIR ),

SHRI A. S. PRAU~A RAO (Alternate)Ssrm K. C. GHOSALSHRI A. K. Btsw~ ( Alternote ) Alokudyog Services Ltd, New DelhiSHRI V. N. GUNAJI_ SZIRIP. J . JAOM Buildings Communications Department, BombayThe Associated Cement Compamcs Ltd, BombayContinued njaga8 )

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IS:6461 PartII)-1972ndian St andard


PART II MATERIALS OTHER THAN CEMENT ANDAGGREGATE)

0 FOREWORDThis Indian Standard Part II ) was adopted by the IndianInstitution on 25 February 1972, after the draft finalized by theand Concrete Sectional Committee had been approved by the

Engineering Division Council.Cement concrete is one of the most versatile and extensively usedmaterials in all civil engineering constructions. There are aer of technical terms connected with the basic materials for concrete,well as the production and use of concrete which quite often requireto give precise meaning to the stipulations in the standardcodes of practices and other technical documents. It has,fore, become necessary to standardize the various terms and definitionsin cement and concrete technology and thus avoid ambiguity in their

The Sectional Committee has, therefore decided to bringseries of glossaries of terms relating to concrete and concreteFor. convenienceof reference, the Indian Standard Glossary of termsto cement concrete has been grouped into the following twelve

Part IPart IIPart IIIPart IVPart VPart VIPart VIIPart VIIIPart IX

Concrete aggregatesMaterials other than cement and aggregate)Concrete reinforcementTypes of concreteFormwork for concreteEquipment, tools and plantMixing, laying, compacting, curing and other construc-tion aspectsProperties of concreteStructural aspects

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IS;6461 PartII)-1972Part X Tests and testing apparatusPart XI Prestressed concretePart XII Miscellaneous

0.3.1 In addition to the above, two separate standards have beenbrought out concerning terminology relating to hydraulic cement and poz-zolanic materials. These standards are IS : 4845-1968* and IS I 4305-1967f.0.4 In the formulation of this standard due weightage has been given tointernational co-ordination among the standards and practices prevailingin different countries in addition to relating it to the practices in the fieldin this country. This has been met by deriving assistance from thefollowing publications:

BS : 2787-1956 Glossary of terms for concrete and reinforcedconcrete. British Standards Institution.BS : 4340-1968 Glossary of formwork of terms. British Standards

Institution.ASTM Designation : C 125 Definitions of terms relating to concreteaggregate. American Society for Testing and Materials.AC1 No SP-19 1967 ) Cement and concrete terminology. AmericanConcrete Institute.AC1 617-1968 Recommended practice for concrete formwork.American Concrete Institute.

1. SCOPE1.1 This standard. .._ _ Part II ) covers definitions of terms relating tomaterials other than cement and aggregates ).2. DEFINITIONS2.0 For the purpose of this standard, the following definitions shall apply.2.1 Accelerator -A substance which, when added to concrete, mortar,or grout, increases the rate of hydration of a hydraulic cement, shortensthe time of set, or increases the rate of hardening or strength development.2.2 Addition -A material that is interground or blended in limitedamounts into a hydraulic cement during manufacture either as a processing addition to aid in manufacturing and handling the cement oras a cfunctional addition to modify the use properties of the finishedproduct.

*Definitions and terminology relating to hydraulic cement.tGlozzary of terms relating to pozzolana.

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IS : 6461 Part II ) - 19722.3 Additive - See2.2.2.4 Admixture - A material other than water, aggregates, andhydraulic cement, used as an ingredient of concrete or mortar, and addedto the batch immediately before or during its mixing to modify one ormore of the properties of concrete.2.5 Air-Entraining - The capability of a material or process to developa system of minute bubbles of air in cement paste, mortar, or concrete.

* 2.6 Air-Entraining Agent - An addition for hydraulic cement or anadmixture for concrete or mortar which causes air to be incorporated inthe form of minute bubbles in the concrete or mortar during mixing,usually to increase its workability and frost resistance.2.7 Air-Entraining Hydraulic Cement - Hydraulic cement containingan air-entraining addition in such amount as to cause the product toentrain air in mortar within specified limits.2.8 Alabaster-A massive densely crystalline, softly textured form ofpractically pure gypsum.2.9 Alkyl Aryl Sulfonate - Synthetic detergent from petroleum frac-tions.2.10 Barite - A mineral, barium sulphate BaSO ), used in pure orimpure form as concrete aggregate primarily for the construction of high-density radiation shielding concrete.2.11 Bonding Agent - A substance applied to a suitable substrate tocreate a bond between it and a succeeding layer as between a subsurfaceand a terrazzo topping or a succeeding plaster application.2.12 Breeze -Usually cinder; also fiue divided material from cokeproduction.2.13 Brown Oxide-A brown mineral pigment having an iron oxidecontent between 28 and 95 percent.2.14 Carbon Black - A finely divided amorphous carbon used to colourconcrete; produced by burning natural gas in supply of air insufficientfor combustion; characterized by a high oil absorption and a low specificgravity.2.15 Catalyst or Promoter) - A substance that accelerates or causesa chemical reaction without itself being transformed by the reaction seealso 2.1 ).2.16 Cement Paste - Ahardened or unhardened. mixture of cement and water; may be either

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ISt6461 PartII)-19722.17 Compound, J oint Seallag- An impervious material used to filljoints in pavements or structures.2.18 Compound, Sealing - An impervious material applied as a coatingor to fill joints or cracks in concrete or mortar.2.19 Compound, Waterproofing - Material used to impart waterrepellency to a structure or a construction unit.2.20 Dispersing Agent - An addition or admixture capable ofincreasing the fluidity of pastes, mortars, or concrete by reduction ofinterparticle attraction.2.21 Filler

a) Finely divided inert material, such as pulverized limestone, silica,or colloidal substances sometimes added to Portland cement paintor other materials to reduce shrinkage, improve workability, oract as an extender.b) Material used to fill an opening in a form.

2.22 Flay Promoter- Substance added to coating to enhancebrushability, flow and levelling.2.23 Fluosilicate- A salt, usually of magnesium or zinc, used onconcrete as a surface-hardening agent.2.24 Fly Ash - A finely divided residue that results from the combustionof ground or pulverized coal and is transported from boilers by flue gasesand collected by cyclone separation or electrostatic precipitation.2.25 Hardener

a) A chemical including certain fluosilicates or sodium silicate )applied to concrete floors to reduce wear and dusting.b) In a two-component adhesive or coating, the chemical componentwhich causes the resin component to cure.

2.26 Plasticizer - A material that increases plasticity of a cement paste,mortar, or concrete mixture.2.27 Preformed Foam -Foam produced in a foam generator prior tointroduction of the foam into a mixer with other ingredients to producecellular concrete.2.28 Pumice -A hiihly porous and vesicular lava usually of relativelyhigh silica content composed largely of glass drawn into approximatelyparallel or loosely entwined fibres, which themselves contain sealedvehicles.2.29 Resin - A natural or synthetic, solid or semisolid organic materialofindefinite and often high molecular weight having a tendency to flow

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Is86461 PartII)-1912under stress, usually has a softening or melting range and usually fracturesconchoidally.2.30 Retarder - An admixture which delays the setting of cement paste,and hence of mixtures, such as mortar or concrete containing cement.2.31 Wateerooftd Cement - Cement interground with a water repel-lent material such as calcium stearate.2.32 Waterproofing Compound- Material used to impart waterrepellency to a structure or a construction unit.

Water-Reducing Agent - A material which either increases work-ability of freshly mixed mortar or concrete without increasing watercontent or maintains workability with a- reduced amount of water.2.34 Water-Repellent Cementrepellent agent added durin -A hydraulic cement having a water-of resisting the absorption of the process of manufacture, with the intentionwater by then concrete or mortar.

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Is:6461 (P&II)-1972( Continued from page 2 )

Members RepresentingSHRI S. R. KULKARNI M. N. Dastur & Co ( Private ) Ltd, CalcuttaSHRI B. C. PATEL ( Alternate)SHRI G. C. MATHUR National Buildings Organization, New DelhiSHRI RAVINDER LAL ( Alternate )SHRI M. A. MEHTA The Concrete Association of India, BombaySHRI C. L. N. IYEN~AR ( Alternate )DR P. K. MOHANTY Tor-Isteg Steel Corporation Ltd, CalcuttaDR R. S. PRASAD ( Alternate)SHRI K. K. NAMBIAR In personal capacity ( Ramanalaya 11, First CrescentDR M. L. PURI Park Road, Gandhinagar, Ad?ar, Madras 20 )Centr h&td Research Institute ( CSIR ), NewSHRI N. S. RAMASWAMY Roads Wing, Ministry of Transport & ShippingSHRI R. P. SIKKA ( Alternate)SHRI G. S. M. RAO Geological Survey of India, NagpurSHRI T. N. S. RAO Gammon India Ltd, Bombay

SHRI S R. PINHEIRO ( Alternate )SU~PE~~ENDINO ENGINEER, END Central Public Works DepartmentSHRI S. G. VAIDYA ( Alternate)SWRI N. M. THADANI In personal capacity ( 82, Marine Drive, Bombay 2)GOL J . M. TOLANI Engineer-in-Chiefs Branch, Army HeadquartersMAJ D. D. SHARMA ( Alternate )DR H. C. VIIVESVARAYA Cement Research Institute of India, New Delhi

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BUREAU OF INDIAN STANDARDSHeedguerters :Manak Rhavan, g Bahadur Shah Zafar Marg, NEW DELHI 110002Telephones : 3 31 01 31,3 31 13 75 Telegrams : Manaksanstha

Common to all Offices 1Regional Off ices : Telephone*Western ; Manakalaya, E9 MIDC, Marol, Andheri East ), 6 32 92 95BOMBAY 400093TEastern : l/l4 C. I. T. Scheme VII M, V. I. P. Road,Maniktola, CALCUTTA 700054Northern : SC0 445-446, Sector 35-CCHANDIGARH 160036

36 24 99

{2 18 4331641

Southern : C. I. T. Campus, MADRAS 600113

Branch Off ices :r

41 24 4241 25 19141 29 16Pushpak, Nurmohamed Shaikh Marg, Khanpur,AHMADABAD 380001F Block, Unity Bldg. Narasimharaja Square,BANGALORE 560002

{2 63 482 63 49

22 48 05Gangotri Complex, 5th Floor, Bhadbhada Road, T. T. Nagar, 6 27 16BHOPAL 462003Plot No. B2/83, Lewis Road, BHUBANESHWAR 751002 5 36 276315 Ward No. 29, R. G. Barua Road,5th Byelane. GUWAHATI 781003 -5-8-56C L N.Gupta Marg, Nampally Station Road), 22 10 83HYDERABAD 500001R14 Yudhister Marg. C Scheme, JAIPUR 302005

{6 34 716 98 32117/418B Sarvodaya Nagar. KANPUR 208005 21 68 7621 82 92

Patliputra Industrial Estate, PATNA 800013Hantex Bldg 2nd Floor ), Rly Station Road.TRIVANDRUM 695001

6 23 0552 27

lnspecf ion Off ice With Sale Point ):Institution of Engineers India) Building, 1332 Shivaji Nagar, 5 24 35PUNE 410005

Sales Office in Bombay is at Novelty Chambera, Grant Road,Bombav 400007 69 66 28tSaies Officb in Calcutta is at 6 Chowringhrr Approach. P. 0. Princep 27 68 00Strrtit. Calcutta 700072

Reprography Unit BIS New Delhi India

is 6461 ( part 2 ) - 1972 glossary of terms relating to cement concrete - part 2 materials (other...

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