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LIME BASEDc

( fpTTT 5yekvv )I ndian St andardBLOCKS - SPECIFICATIONSecond Revision

UDC 666-924-431692.2

@ BJS 1992BUREAU OF- INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARGNEW DELHI 110002

Sept ember 1992 Price Group2

( Reaffirmed 1999 )

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Building Lime and Lime Products Sectional Committee, CED 4

FOREWORDndard was adopted by the Bureau of Indian Standards, after the draft finalizedLimes and Lime Products Sectional Committee had been approved by the CivilEngineering Division Council.

This Indian Staby the Building

This standard was first published in 1965 and subsequen!Iy revised in 1978. During its firstrevision, the provisions given in IS 5498 : 1969 GSpecification for lime cement-cinder hollowconcrete blocks were incorporated in this standard and IS 5498 was withdrawn. Most of theIndian Standards referred to in the first revision of this standard had undergone revision and,therefore, in this revision all the references had been updated in addition to modifying someother requirements like tolerances on dimensions, sampling and criteria for conformity, etc. Aclause on manufacturers certificate has also been incorporated in this revision.Lime based blocks are made from lime, lime and 33 grade ordinary Portland cement or slagcement or Portland Pozzolana cement, lime and pozzolana, and lime pczzolana mixture. The blocksare manufactured by various processes developed by Central Building Research Institute; Khadiand Village Industrres Commission; Central Road Research Institute; and other agencies. Theseblocks arc economical because it ensures rapid construction helps in saving of mortar, and doesnot require plastering. However, it can be given an attractive appearance, if needed, due towide variety of finishes both for interior and exterior walls.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 berounded off in accordance with IS 2 : 1960 Rules for rounding off numerical values ( r evi sed ).The number of significant places retained in the rounded off value should be the same as that ofthe specified value in this standard.

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IS 3115 : 1992

LIME BASED(1 SCOPE

Indian StandardBLOCKS - SPECIFICATIONSecond Revision )

This standard covers dimension, quality andstrength requirement of lime based blocks ( bothholiow and solid ) used for walls: internalpartitions and filler walls.2 REFERENCESThe Indian Standards listed in Annex A arenecessary adjuncts to this standard.3 TERMINOLOGYFor the purpose t)f this standard, the followingdefinitions shall apply.3.1 BlockA masonry unit, either solid or hollow, anyone of the external dimensions of which isgreater than the corresponding dimension of abrick as specified in IS 3952 : 1988, and of suchsize and mass as to permit it to be handled byone man. Furthermore, to avoid confusionwith slabs and panels, the height of the blockshall not exceed either its Iength or six timesits width.3.2 Solid BlockA block which is hundred percent solid.3.3 Hollow BlockA block in which hollow area is greater than25 percent but not greater than 50 percent ofthe gross cross-sectional area.3.4 Gross AreaThe total area occupied by a block on its bedd-ing face, including areas of the hollowportions and end recesses.3.5 Block DensityThe density calculated by dividing the mass ofa block by the overall volume, including holesor cavities and end recesses.3.6 Drying ShrinkageThe difference between the length of a specimenwhich has been immersed in water and thensubsequently dried to constant length, all under

specified conditions, expressed as a percentageof the dry length of the specimen.3.7 Moisture MovementThe difference between the length of the speci-men when dried to constant length and thelength when subsequently immersed in water,all under specified condition, expressed as apercentage of the dry length of the specimen.4 GENERAL REQUIREMENTSAll blocks shall be sound, free from cracks,broken edges, distortion and other defects thatwould interfere with the proper placing of theunit.The bedding surface shall be at right angles tothe face of blocks. The ends of the blockswhich form the vertical joints may be plain,tongued and grooved or double grooved asshown in Fig. 1.5 MATERIALS5.1 LimeLime shall conform to IS 712 : 1984.5.2 CementThe cement shall conform to IS 269 : 1989 orIS 455 : 1989 or IS 1489 (Parts 1 and 2 ) : 1991.5.3 Calcined Clay PozzolanaThis shall conform to IS 1344 : 1981.5.4 Lime Pozzolana MixtureThe mixture shall conform to IS 4098 : 1983.5.5 Fly AshThis shall conform to IS 3812 : 1981.5.6 Coarse AggregateThe coarse aggregate to be used in the manu-facture of blocks shall be either natural stoneaggregate conforming to IS 383 : 1970 or brokenbrick ( burnt clay ) aggregate conforming toIS 3068 : 1986 or cinder aggregate conformingto IS 2686 : 1977 depending on the situation ofuse. Any other suitable aggregate of provenquality and performance may also be used forthe purpose.

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IS 3115 1992

1A TONGUE AND GROOVED JOINT 1B DOUBLE GROOVED JOINTAh dimensions in millimetres.

FIG. 1 PLAN OF JOINTS N LIME BASED BLOCKS

5.7 WaterThe water to be used in the manufacture ofblocks shall be fresh, clean and free from acids,alkalis, salt or other deleterious matter.6 TYPESThe block shall be of foilowing types:

Type A - Block with hoth faces keyed forplastering,Type B - Block with both faces smoothand suitable for use without plas-tering or rendering on either side,andType C - Blocks with one face keyed andone face smooth.

7 DIMENSIONS AND TOLERANCES7.1 DimensionsThe actual size o f the blocks when measuredaccording to the procedure given in Appen-dix A of IS 2185 ( Part 1 ) : 1979 shall be asfollows:

Length 390 mmWidth 90, 190, 290 mmHeight 90, 190 mm

The dimensions of the units are so designedthat taking account of the thickness of mortarjoints, they will produce wall lengths andheights which will conform to the principles ofmodular co-ordination.

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7.1.1 Sizes other than those mentioned in 7.1may be supplied by mutual agreement betweenthe supplier and the purchaser.7.2 TolerancesThe maximum variation in length of a blockshall not be more than f5 mm and the maxi-mum variation in height and width shall not bcmore than &3 mm.7.3 Hollow block shall be made with one ormore cavities and the wall thickness at anypoint shall not be less than 40 mm.8 BLOCK DENSITYThe block density when determined accordingto Appendix B of IS 2185 ( Part 1 ) : 1979 shallnot be less than 1 000 kg/m3.9 COMPRESSIVE STRENGTH9.1 The minimum average compressive strengthof eight blocks when determined in accordancewith the procedure laid down in Appendix C ofIS 2185 ( Part 1 ) : 1979 shall be 3.5 MPa.

NOTES1 The blocks shall be tested in saturated stateafter immersion in water at room temperature for24 hours.2 While calculating the compressive strength, thegross arca of the specimen shall bc taken.

9.2 The compressive strength of any individualblock shaII not fall below the minimumspecified average compressive strength by morethan 20 percent.

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IS 3115 : 1992

10 DRYING SHRINKAGEThe drying shrinkage of each of the blocks,when determined according to the proceduregiven in Appendix E of IS 2185 ( Part 1 ) :1979 shall not exceed 0.1 percent.

NOTE - While preparing the specimen from hollowblocks for trsting, the specimen with largest possi-ble dimension that can bc obtained may be used.11 MOISTURE MOVEMENTThe moisture movement of each of the threedried units on immersion in water, when deter-mined in the manner described in Appendix Pof IS 2185 ( Part 1 ) : 1979 shall not exceed0.05 percent.12 SAhlPLING AND CRITERIA FORCONFORMITY12.1 LotIn any consignment, all the blocks of the samesize and from the same batch of manufactureshall be grouped together into a minimumnumber of groups of 5 000 blocks or less. Eachgroup 5hall constitute a lot.12.2 From each lot a sample of 20 blocks shallbe selected at random. In order to ensure therandomness of selection, all the blocks inthe lot may be arranged in a serial order.Starting from any random block everyrth block may be selected till the requisitenumber is obtained, being the integral part ofN/20, where N is the lot size.12.3 Number of Tests12.3.1 All the 20 blocks shall be checked fordimensions ( see 7) and then inspected forvisual defects ( see 4 ).12.3.2 Out of the 20 blocks, 3 blocks shall besubjected to the test for block density ( see 8 ),8 blocks to the test for compressive strength( see 9 ) and 3 blocks to the test for dryingshrinkage ( see 10 ) and later to the test formoisture movement ( see 11 ). The remaining

blocks shall be reserved for retest for dryingshrinkage and moisture movement if a needarises.

12.4 Criteria for ConformityThe lot shall be considered as conforming tothe requirements of this specification if the con-ditiois mentioned in 12.4.1 to 12.4.3 are_satisfied.12.4.1 The number of blocks with dimensionsoutside the tolerance limit and/or visualdefects, among those inspected shall be notmore than two.12.4.2 For block density and compressivestrength, the mean value determined shall notbc less than the minimum limit specified in 8.1and 9.1 respectively.12.4.3 For drying shrinkage and moisturemovement, all the test specimens shall satisfythe requirement of the test specified in 10and 11. If one or more specimens fail to satisfythe requirements, another 3 blocks shall besubjected to these tests. All these blocks shallsatisfy the requirements.13 MANIJFACTURERS CERTIFICATEThe manufacturer shall satisfy himself thatthe blocks conform to the requirements of thisspecification and, if requested, shall supply acertificate to this effect to the purchaser orhis representative.14 MARKING14.1 Each blockmanently markedtion:

shall be clea,.ly and per-with the following informa-

a) Indication of the source of manufacture;n!:db) Year of manufacture, if required.

14.2 Each block may also be marked with theStanc!ard Mark.

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IS 3115 : 1992

IS No.269 : 1989383 : 1971

45.5 : 1989

712 : 19841344 : 1981

1489(Parts 1 & 2 ) :1991

ANNEX A( Clause 2 )

LIST OF REFERRED INDIAN STANDARDSTi t l e IS No.

33 grade ordinary Portland 2185cement ( jburrh revision ) ( Part 1 ) : 1979Coarse and fine aggregatesfrom natural sources for con- 2686 : 1977Crete ( second revi sion )Portland slag cement (fourth 3068 : 1986revision )Building limes ( thi rd revi sion ) 3812 : 1981Calcined clay pozzolana ( secondrevi sion )

3952 . 1988.Portland pozzolana cement( thi rd revi sion ) 4098 : 1983

Ti t l eConcrete masonry units :Part 1 Solid and hollow con-crete blocks ( second revision )Cinder aggregates for use inlime concrete (first revi sion )Broken brick (burnt clay )coarse aggregates for use inlime concrete (first revi sion )Ply ash for use as pozzolanaand admixture (first revi sion )Burnt clay hollow bricks forwalls and partitions ( secondrevi sion )Lime pozzolana mixture (jbstrevi sion )

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http://../link/31to60/383.Bishttp://../link/31to60/455.Bishttp://../link/61to88/712.Bishttp://../link/13and14/1344.Bishttp://../link/15to30/2185_1.Bishttp://../link/15to30/3068.Bishttp://../link/31to60/3812.Bishttp://../link/31to60/3952.Bishttp://../link/31to60/4098.Bishttp://../link/13and14/1344.Bishttp://../link/61to88/712.Bishttp://../link/31to60/455.Bishttp://../link/31to60/383.Bishttp://../link/31to60/4098.Bishttp://../link/31to60/3952.Bishttp://../link/31to60/3812.Bishttp://../link/15to30/3068.Bishttp://../link/15to30/2686.Bishttp://../link/15to30/2185_1.Bis

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Standard MarkThe use of the Standard Mark is governed by the provisions of the Bureau of ndianStandards Act, 1986 and the Rules and Regulations made thereunder. The Standard Markon products covered by an Indian Standard conveys the assurance that they have beenproduced to comply with the requirements of that standard under a well defined systemof inspection, testing and quality control which is devised and supervised by BIS andoperated by the producer. Standard marked products are also continuously checked byBIS for conformity to that standard as a further safeguard. Details of conditions underwhich a Iicence for the use of the Standard Mark may be granted to manufacturers orproducers may be obtained from the Bureau of Indian Standards.

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Bureau of Indian StandardsBIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 topromote harmonious development of the activities of standardization, marking and qualitycertification of goods and attending to connected matters in the country.CopyrightBIS has the copyright of all its publications. No part of these publications may be reproducedin any form without the prior permission in writing of BIS. This does not preclude the free use,in the course of implementing the standard, of necessary details, such as symbols and sizes, typeor grade designation. Enquiries relating to copyright be addressed to the Director( Publications ), BIS.Revision of Indian StandardsIndian Standards are reviewed periodically and revised, when necessary and amendments, ifany, are issued from time to time. Users of Indian Standards should ascertain that they are inpossession of the latest amendments or edition.sent to BIS giving the following reference: Comments on this Indian Standard may be

Dot : No. CED 4 ( 5002 )

Amendments Issued Since PublicationAmend No. Date of Issue Text Affected

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