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है”ह”ह

IS 7320 (1974): Specification for concrete slump testapparatus [CED 2: Cement and Concrete]

Gr 2 August 1974

IS : 7320 -1974( Reaffirmed 1999)

Indian Standard

(Reaffirmed 2008)

SPECIFICATION FORCONCRETE SLUMP TEST APPARATUS

(Fourth Reprint NOVEMBER 2000)

UDC 666.972 : 620.192.2.05

© Copyright 1974

BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

IS I 7320 - 1974

Indian StandardSPECIFICATION FOR

CONCRETE SLUMP TEST APPARATUS

Cement and Concrete Sectional Committee, BDC 2

Chairman

DBH. C. VJ8VEBVARAYA

Representing

Cement Research Institute of India, New Delhi

Mtmhns

DR. A. S. BHADURJSURI E. K. RAMACHANDRAN

( Atumau )SunI A. K. CUATTERJI

National Test House, Calcutta

Central Building Research InstituteRoorkee

(CSIR ),

S. B. Jo~hi & Co Ltd, BombayDirectorate General of Supplies & Disposals

DR S. S. REII8! ( Alternate )D E PUT Y CnIEF ENOINEER Public Works Department, Government of Tamil

( BUILDINGS) NaduDEPUTY CIUEF ENOINEER

( IltRIGATION & DESIONS)

(Alternate)DIREcTon Central Road Research Institute (CSIR), New Delhi

Dn R. K. GHOSH ( Alternate)DIRECTOR ( CSMRS) Central Water & Power Commission, New Delhi

DEPUTY DIRECTOR ( CSMRS )( Alternate )

SHIn K. II. GANGWAL lIyderabad Asbestos Cement Products Ltd.Hvdcrabad

SURI K. C. GH08AL Alokudyog Services Ltd, New DelhiSum A. K. BISWAS ( Alt,rnale)

DR R. K. Gnosn Indian Roads Congress, New DelhiBRIG HARISH CHANDRA Eng ineer-in-Chief ts Branch, Army Headquarters

SHRI G. R. MIRCRANUANI ( Alternate )DR R. R. l-IATTIANGADI Associated Cement Companies Ltd, Bombay

SHRI P. J. JAUUS ( Alttmtd, )On IQBAL ALI Enginecring Research Laboratories, HyderabadJOINT DIRECTOR STANDARDS Research, Designs & Standards Organization.

( B & S ) LucknowDEPUTY DIRF;OTon STANDARDS

( B & S) i Altemate )SHRI S. B. JOSHISURY M. T. KANSB

( Continued 011'tJl' 2 )

(i) CoP),ighl 1974

IH lRI·:,t\ll ()J: INI)IAN STANI)AKI>S

T'his publication is protected under t hc Indian Copv7i.l!hi Act ( XIV of 1957 ) andreproduction in whole or in pan by any means except with written pr-rm ission of thepublisher shall be deemed to be an infringement of (:oP\ ri~ht under t he said Act.

'IS: 7320 - 1974

( Continued from page 1 )

MembersSHU,I s. L. KATHunlA

SHRI S. R. Kur... KARNI

SUU.1 M. A. Ml':HTASHUI O. MUTHACIlEN

SUPERINTENDINO ENGINEER,

2NO CIRCLl~ ( ALternt;:: )SHUI ERACH A. ~ADIIt~HAltSnnr K. K. NAMnl:\lt

I}ROF G. S. RAMASWAMY

R,p"s,nting

Roads Wing, Ministry of Shipping & Transport~1. N. Dastur & Co ( Private) Ltd, CalcuttaConcrete Association of India, BombayCentral Public Works Department

Institution of Engineers ( India ), CalcuttaIn personal capacity ((Ramanalaya' 11 First Crescent

Park Road, Gandhinagar I Adyar, Madras)Si ructura l Engineering Research Centre (CSIR) I

Rooi keeDn. N. S. nHAL ( Alternate J

[)R A. V. R. RAO Nat ional Build ings Organization, New DelhiSHin K. S. SItINIVASAN ( Altemat« )

SHIH rL S. M. Rx o (;cological Sur\'('y of India, NagpurSun: T. N. S. RAO {;atntnon India Ltd, Bombay

SUUJ S. R. PINHElnn i Alternate )SEORF;TAHY Ci-nt ral Board of Irr iga t ion & Power, New Delhi

DEPUTY Sf:CItE'rAIlY (I) (Alie,1lutf )SUR} R. P. SH.'\ItMA Irrigation & Power Research Institute, Amritsar

SUH.I MOHJNDEH. S,NGH ( Alternate)SHUI (~. B. SINon Hindust an Housing Factory Ltd, New Delhi

SHIU C. L. KA8LI\VAL ( Alternate )SHit' .1. S. SINOlfOTA Beas Designs Organization, Nangal Township

SHRI T. C. (]A RO ( Alternate)SURY R. K. SINHA Indian Bureau of Mines, NagpurSHHI K. A. SUURA1\IANIAM India Cements Ltd, Madras

SHRI P. S. RAMACHANDRAN ( Alternate)SHltI L. SWAHOOP Daltnia Cement ( Bharat ) Ltd, New Delhi

SURf A. V. RAMAN A ( Altfrnate)SHRI I). AJITHA SIMllA, Director General, lSI ( Ex-oJlicio Member )

Dirr-cror ( Civ Engg )

Secretary

SURI Y. R.. TAN1:JA

r)cruty Director ( Civ Engg ), lSI

Instruments for Cement and Concrete Testing Subcommittee, BDC 2 : 10

Conuener

DR IQBAL AT..I Engineering Research I .abora t or ics, I Iydcraba d

Members

PROF B. M. AnUJA Indian Inst it ut« of Terhnologv, New DelhiLALA G. C. DAR National T~~t House, CakullaSHRt T. P. EKAMRARAM Highways Res-arch Station, MadrasDR R. K. GHOSH Central R.oad Research Inst iiute ( CSIR ), New n-n.:

SUR! K. L. Srerrn ( Alternate )

( Continued 011 page B )

2

AMENDMENT NO. 1 MARCH 1984TO

15:7320-1974 SPECIFICATION FOR CONCRETESLUMP TEST APPARTUS

A1terati ons_..... -..-..-, ...... ~

(Pags 3 j cZause 2.1~ line 2) - Substitute'tamping bar' for 'tamping rOd'.

(Page 4, clause 4~ TitZe) - Substi tute 'TAMPINGBAR t for 'TAMPING ROD'.

(Page 4, clause 4.1) - Substitute the followingfor the existing matter:

'4.1 The tamping bar shall be a steel bar 16 mm ~i

diameter, 600 mm long with a rounded working e.nd'

(Page 7, cLause 5.1, Zine 2) - Substitute 'bar'for 'rod t •

(BDC 2)

Printed at New India Priuting Press. Khurja. India

IS : 7320 - 1974

Indian StandardSPECIFICATION FOR

CONCRETE SLUMP TEST APPARATUS

o. F 0 }{ E W 0 R D

0.1 This Indian Standard was a: loptcd by the Indian StandardsInstitution on 21 February I97L

} , after the draft finalized by the Cementand Concrete Sectional Committee had been approved by the CivilEngineering Division Council.

0.2 The Indian Standards Institution has already published a series ofstandards on methods of testing cement and concrete. It has beenrecognized that reliable and inter comparable test results can be obtainedonly with standard testing equipment capable of giving the desired levelof accuracy. The Sectional Committee has, therefore, decided to bringout a series of specifications covering the requirements of equipmentused for testing cement and concrete, to encourage its development andmanufacture in the country.

0.3 For the purpose of deciding whether a particular requirement of thisstandard is complied with, the final value, observed or calculated,expressing the result of a test or analysis, shall be rounded off inaccordance with IS: 2-1960*. The number of significant places r et aincdin the rounded off value should be the same as that of the specifiedvalue in this standard.

1. SCOPE

1.1 This standard covers the rcquircment s of the apparatus used fordetermining the slump of fresh concrete as ~l measure of its consistency.

2. APP .&\RATUS

2.1 'Fhe apparatus shall consist of a mould for the test spccrrncn and atamping rod.

3. MOULD

3.1 Shape and Dimensions - The mould for the test specimen shall bein the form of the frustum of a cone as shown in Fig. I or 2 and internaldimensions as given in Table I.

·Rules for rounding off numerical values ( revised).

3

III 7320 • 1.74

TABLE 1 INTERNAL DIMENSIONS OF MOULD( Clawe 3.1 )

Sr. DJrrAILa DIMENSION TOLERANOE (SI' NO'I's)No. mm mm

( I ) (2 ) (3) (4)

i) Bottom diameter 200 +3- 1·5

ii) Top diameter 100 +3- 1·5

W) Height 300 :I: 1·5

NOT. - Diameter and height measured anywhere on the mould shall not differ(rom the Dominal dimension (that is 200. 100 and 300 mm) by more than thelpecified tolerance.

3.1.1 Where no tolerance has been specified for a particular dimension,it will mean that reference is being made to the nominal dimension.

'.2 Materlal- The mould shall be made of galvanized iron sheet orany other suitable metal not readily attacked by cement paste; aluminium.hall not be used. The metal shall be at least 1·6 mm thick.

'.3 Coa_ructlon - The mould may be constructed either with orwithout a seam. When a seam is provided, the seam shall be essentiallyas shown in Fig. 2.

3.3.1 The top and bottom of the mould shall be open and parallel to'each other and at right angles to the axis of the cone. The internalsurface of the mould shall be smooth and shall be free from dents andprojections, such as protruding rivets.

3.3.2 The mould shall be provided with foot pieces and handles tofacilitate lifting it from the moulded concrete test specimen. The shapeand dimensions of the foot pieces and handles may be as shown in Fig. 1and 2. Attachments shall be riveted, welded or brazed to the mould.Any rivet used in the construction of the mould shall be countersunk onthe inside of the cone.

NOT. - A mould which clamps to a non-absorbent bale plate or an apparatus witha luitable guide attachment (or measuring height of the moulded concrete may also beaccepted provided it otherwise conforms to the requirement. of the lpecification.

4. TAMPING ROD

f.l The tamping rod shall be a round straight steel rod, 16 mmdiameter and 600 mm long. The tamping end of rod shall be roundedto a hemispherical tip, the diameter of which shall be 16 mm.

4

IS I 7320 - 1974

1-6 mm MINTHlCK

1.6 mmTHICK

All diMfOSioDi in miUimetres.

Flo. 1 MOULD ( SEAKLESI ) FOR SLUMP TEST OP CONCRETE

5

IS I 7320· 1974

100+ 3-1-5

1.6 mmTHICK

1.6mmMIN THICK

~'2L·_-"'~--2...JOL.:~.l+J:.J+ l--IO-~--=p--...-..... 1.6

l----- -1.5

300~ 1·5

All dimension. in millimetres.

Flo. 2 A MOULD (WITH SEAM) FOR SLUMP TEST OF CONCRETE

6

IS I 7320 • 197~

5. MARKING

5.1 The following information shan be clearly and indelibly marked onthe mould and the rod in a way that it does not interfere with theperformance of this apparatus:

a) Name of manufacturer or his registered trade-mark or both, andb) Date of manufacture.

5.1.1 The apparatus may also be marked with the Standard Mark.

5.1.2 The use of the Standard Mark is governed by the provisions of Bureau ofIndian Standards Act, 1986 and the Rules and Regulations made thereunder. Thedetails ofconditions under which the licence for the Standard Mark ITIay be grantedto manufacturers or producers may be obtained from the Bureau of Indian Standards.

..,I

Mmtbns

Smn H. K. GUBA

18I 7320 • 1974

All India Instruments Manufacturen ac DealersAssociation, Bombay

SURI V. K. VA8UDEVAN ( AIII,an" )SUBt P. J. JAoua Associated Cement Companies Ltd, Bombay

SUBl D. A. WADIA (AlImuJII )SUBI M. R. J08BI Ministry of Defence, R &. D

SUBI K. A. SIBASKAR (Altmaal,)SaRI V. KANNAN Cement Research Institute of India, New Delhi

SURI M. V. RANGA RAO ( Altmuzl, )hoI' C. K. RAKESH Indian Institute of Technolcgy, Bombay

DR R. S. AYYAR ( Alt"nat, )SHBl P. V. SUBBA RAo Andhra Scientific Co Ltd, Maaulipatam

SUBI Y. S. NARAYANA ( Altmult, )DB S. S. REBS1 Central Building Research Institute (CSIR), Roorkee

SURI J. P. KAU8BlsH ( AII,mal,)SURI H. C. VERMA Associated Instrument Manufacturers (India) Pvt

Ltd, New DelhiSBJ\I A. V. SHASTRI ( Alt,mill, )

8

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