IS 2095-2: Gypsum Plaster Boards, Part 2: Coated/Laminated Sypsum Plaster Boards

12 Pages·2001·1.3 MB·English

by  Bureau of Indian Standards

इंटरनेट मानक
Disclosure to Promote the Right To Information
Whereas the Parliament of India has set out to provide a practical regime of right to
information for citizens to secure access to information under the control of public authorities,
in order to promote transparency and accountability in the working of every public authority,
and whereas the attached publication of the Bureau of Indian Standards is of particular interest
to the public, particularly disadvantaged communities and those engaged in the pursuit of
education and knowledge, the attached public safety standard is made available to promote the
timely dissemination of this information in an accurate manner to the public.
“जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ”
Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru
“The Right to Information, The Right to Live” “Step Out From the Old to the New”
IS 2095-2 (2001): Gypsum Plaster Boards, Part 2:
Coated/Laminated Sypsum Plaster Boards [CED 4: Building
Limes and Gypsum Products]
“!ान $ एक न’ भारत का +नम-ण”
Satyanarayan Gangaram Pitroda
““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee””
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै”
Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”

IS 2095(Part2) :2001
(Reaffirmed 2007)
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Indian Standard
GYPSUM PLASTER BOARDS — SPECIFICATION
PART 2 COATEDILAMINATED GYPSUM PLASTER BOARDS
(Second Revision)
ICS 91.100.10
© BIS 2001
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002
December 2001 PriceGroup 2
AMENDMENT NO.1 SEPTEMBER 2006
TO '
IS 2095 (pART 2) : 2001 GYPSUM PLASTER
BOARDS - SPECIFICATION
PART2 COATEDILAMINATED G~PSUM PLASTER BOARDS
(SecondRnllioll)
(Page 2, clause 10, Title) - Substitute 'ADDITIONAL' for
'OPTIONAL'.
(CED4)
.ReprograpnyUnall91S.NewDeihl,ind.a
AMENDMENT NO. 2 MARCH 2010
TO
IS 2095 (PART 2) : 2001 GYPSUM PLASTER BOARDS ―
SPECIFICATION

PART 2 COATED/LAMINATED GYPSUM PLASTER BOARDS

( Second Revision )

(Page 1, clause 2) ― Insert the following new entries at the appropriate
place:

‘2095 (Part 1) : 1996 Gypsum plaster boards ― Specification : Part 1 Plain
gypsum plaster boards (second revision)

2095 (Part 3) : 1996 Gypsum plaster boards ― Specification : Part 3
Reinforced gypsum plaster boards (second revision)

8272 : 1984 Gypsum plaster for use in the manufacture of fibrous
plaster boards ― Specification (first revision)’

(CED 4)

Reprography Unit, BIS, New Delhi, India
GypsumandGypsumBasedProductsforBuildings,CED 21
R:>REWORD
ThisIndianStandard(Part2)(SecondRevision)wasadoptedbytheBureauofIndianStandards,afterthedraft
finalizedbythe GypsumandGypsumBasedProductsforBuildingsSectionalCommitteehadbeenapprovedby
theCivilEngineeringDivisionCouncil.
Theinternalsurfacesofwallsandceilingsofmostofthebuildingsarefinishedinternallybyapplyingplasterin
oneormorecoats. Inordertoreducethedemandofsitelabour, theuseofbuildingboards,suchasgypsum
plasterboard,fibrehardboard.cementcoirboardandasbestoscement-buildingboardsascoveringforwalls
andceilingisincreasingsteadily. Gypsumboardshavethespecificadvantageofbeinglighterthantheboards
ofsimilarnaturesuchasfibrehardboardandasbestoscementbuildingboards. Gypsumboardsalsopossess
betterfire-resisting,thermalandsoundinsulatingproperties.
Sufficientquantitiesofnaturalgypsumandby-productgypsumareavailableinIndia. Thoughnaturalgypsum
hasbeen mostlyused in the manufacture of gypsumboards,by-productgypsumafter suitabletreatmentif
required, isalsoequallysuitableformanufacturingsuchboards.
Gypsumboardsmaybemanufacturedasplain,coatedllaminatedandreinforcedboards.
Theboardsmaybeused toprovidedry liningfinishestomasonrywalls,toceilings.tosteelortimberframe
partitions,orasceilingstostructuralsteelcolumnsandbeams,orinthemanufactureofprefabricatedpartition
panels.
Plainboardsthatisgypsumplasterboardscompriseofagypsumplastercorewithorwithoutfibreincasedinand
firmlybondedtostrongpaperlinerstoformrectangularboards.Thesegypsumboardsareusedaswallboards
and base boards with improvedwater-resistance and core cohesionat elevatedtemperatures. The coated!
laminatedboardsalsocharacterizedbygypsumplasterand namely, wastepaperfibre,sisalcoirglass,etc,
producedbypressingtoformboardofsurfacesuitableforlaminationorpapering.
Coatedllaminatedgypsumboardsareusedforlayingforconcreteceiling.Withconcreteitcombinesfirmlyand
representsreadymadeinteriorplastering. Glassreinforcedgypsumboards(ORG)arepseudoductilematerials
havingreasonablyhighflexural andimpactstrengths.
Gypsumboardsspecifiedinthestandardhavebeencoveredinthreeparts,Part1coversPlainboards,Part2
coverscoated/laminatedboardsandPart3coversreinforcedboards.
Thispartdealswithcoatedllaminatedgypsumplasterboards, itsmanufacture,testsandsampling.
Aschemeof labellingenvironmentfriendly productstobeknownasECOMarkis beingintroducedat the
instanceoftheMinistryofEnvironmentandForests(MEF),GovernmentofIndia. TheECOMarkshallbe
administeredby the Bureau ofIndianStandardsundertheSISAct, 1986aspertheResolutionNo.7Jdated
21February1991publishedintheGazetteoftheGovernmentofIndia.ForaproducttobeeligibleforECOMark,
it shallalsocarry theStandardMarkof theBIS besides meetingadditionaloptionalenvironmentfriendly
requirements.
ThecompositionofthecommitteeresponsibleforformulationofthisstandardisgivenatAnnexA.
Forthepurposeofdecidingwhetheraparticularrequirementofthisstandardiscompliedwith,thefinalvalue,
observedor calculated,expressingthe resultof a test or analysis,shallbe roundedoff in accordancewith

IS2:1960'Rulesforroundingoffnumericalvalues(revised)'. Thenumberofsignificantplacesretainedinthe
roundedoffvalueshouldbethesameasthatofthespecifiedvalueinthisstandard.
IS 2095(Part2):_1
Indian Standard
GYPSUM PLASTER BOARDS - SPECIFICATION
PART 2 COATEDILAMINATEDGYPSUM PLASTER BOARDS
(Second Revision)
1 SCOPE 4.2 Flbr.
ThisstandW(Part2) coversthemethodofmanufacture, Thereinforcingfibremaybecellulosicfibreproduced
tests andsamplingof gypsumboardsforuse asa outofwastepaperlikenewspaper,magazines.oldcard
liningmaterialforceiling,drysurfacingmaterialfor boards,corrugatedcartonescontainingcellulose.
wallsorforlightweightpartitions.
4.3 Water
2 REFERENCES
Potablewatersaregenerallyconsideredsatisfactoryfor
TheIndianStandardslistedbelowcontainprovisions
mixingplaster.
which, through reference in this text, constitute
provisionsofthisstandard. Atthetimeofpublication, 4.4 011 and Greases
theeditionsindicatedwerevalid. Allstandardsare
Theoilandgreasesusedinthepreparationof benches
subjectto revision,and partiesto agreementbased
andmouldsfor castingshallbe suchas willleavethe
on this standard are encouraged to investigatethe
plastersurfaceof theproductcleanandunstained.
possibilityof applying the most recenteditionsof
thestandardsgivenbelow: 5 METHODOFMANUFACTURE
ISNo. 7itle
In these boards, the cellulosic fibresproducedfrom
2S42(Part2J Methodoftestforgypsumplaster, thewastepaperareintimatelyblended/embeddedinthe
Sec1to8): 1981 concrete and products: Part2 gypsummass.Thewastepaperisprocessedinthefibre
Gypsumproducts(firstrevision)
millstoformcellulosicfibres. Thegypsumplasterand
2547(Part1): Gypsumbuildingplaster : Part 1 thecellulosicfibresarefedintoamixertofonnunifonnally
1976 Excludingpremixed lightweight
blendedmass. Themixtureofgypsumplasterandthe
plaster(firstnvision) fibresare transportedto a spreading unit whereinthe
4905:1968 Methodsforrandomsampling mixtureisevenlyspreadoveraperforatedbeltormoulds
9489:1980 Method of test for thermal
and humidified. Acontinuous or hand pressmaybe
conductivityofmaterialsbymeans usedtopressthegypsumfibremixtoformgypsumfibre
ofheatflowmeter boards. After setting, the boards are demouldedand
12679:1989 By-product gypsum for use in dried.
plaster,blocksandboards
Theboardismoistenedwithabondingagentforsurface
3 TERMINOLOGY
treatment. A retarted water absorption and anti-dust
3.0 For the purposeofthisstandard. thefollowing propertiesare realized. This corresponds to a prime
definitionsshallapply. coalingell'ectalinthefaetayforapaintingorlamination!
papering.Theboardisnowfinishedcanbepackedin a
3.1 Gypsum FibreBoard
stack.
A compositionof Iypsum plasterand wastepaper
6 DIMENSIONSANDTOLERANCES
fibrefonninabodyofreau1ardimensions.
6.1 Shape
3.2 LamlnatecllC.tec1Gypsum Board
Gypsum bOards based on material conforming to Theboardshallberectangularorsquareinshape.
IS209~(Part1)orIS209~(Part3)orIS8272intimately 6.2 DlmensloDs
bondedwithwoodvineers,plasticfilms,'paper,etc.
Thelength,widthandthicknessof theboardsshallbe
4 MATERIALS
asspecifiedinTable1.
4.1 GypIIIID PlMter
6.3 Mus-
"'of
GypsumplaterIhaIIconformtoTypeBhemihydrate
Theminimummassoftheboardspersquaremetreshall
IS254~~(Part1)orIS8272orpIast«produced
be"liveninTable1.
from by-product-IYPsum conforminltoIS12679.
1
IS 2095(Part2):_1
6A FibreGypsumPlasterRatio froma lotshalldepend uponthesizeof thelotand
shallbeinaccordancewithcoil and2ofTable2.
Theminimum fibreplasterratioofboardsshallbeas
perthevaluespecifiedinTable1. 9.2.1 Theboards forthe sampleshallbeselectedat
random from the lot and in order to ensure the
18ble1DImensionsandOtberPartlculan01Gy..m
randomness of selection, the procedure given in
FlbreBoud
IS4905maybefollowed.
(Clauses6.2,6.3and6.4)
Noadoal Lenltll Width Ma•• of Fibre:
'nable 2 Scale01SampUDIandPermll8ible
Thltkneu IBID .m Board GypIU" aDd
IDID ka/_J Pla.ter Number01Delectives
(MID) (Mia) (Clause9.2)
10 1SOO 1000 II.S 1:8 Nu.ber.1 Nu.her.I P,r.II.lbl. Sub••••pl.
B.rd. ID the Board. t. be Nu.b.r.f Sbe
NOTE- Gypsumplaterboards mayalso be manufactured
Lot Seleeted Defeetlv..
in other dimensions subject to mutual agreement between
Upto 100 6 0 3
the purchaserand the manufacturer.
o
6.5 Tolerances 101to 150 8 3
Tolerancesshallbeasgivenbelow: 151to 300 13 4
a) Length: +O,-6mm 301 to 500 20 2 5
b) Width: +O,-5mm 501 to 1000 32 3 7
c) Thickness +0, -6mrn I 001andabove 50 5 10
9.3 Alltheboardsselectedunder9.2shallbeinspected
7 FINISH
forvisualdefects,shapes,dimensions,massofboards
Thesurfaceoftheboardsshallbetrueandfreefrom andfibreratio.Aboardwhichisfoundnotconfonning
imperfections that wouldrendertheboardsunfitfor toanyoneormoretherequirementsinspectedforshall
uses. Theedgeshallbestraightandthecomersshall beconsideredasdefective.
besquare.
9.3.1 A lot shall be considered as having found
8 TESTS conformingtotherequirementsof visualinspection,
shape,dimensions,massofplasterandfibreratioifthe
8.1 Visual Inspection
numberof defectives as observed in 9.3 does not
All boardsshallbe sound.free fromcracks,broken exceed the corresponding permissible number of
edgesandsuchotherimperfectionsthatwouldrender defectivesgivenincol3ofTable2.
themunfitforuse.
9A Alothavingfoundconfonningtovisual inspection,
8.2 Transverse Bending Strength shape,dimensionsandmassofplasterandfibreshall
then betested for transverse bending strength and
The transverse bending strength when tested in
thermalconductivityasperIS2542(Part2/See1to8)
accordancewithIS 2542(Part2/See1)shallnotbeless
and IS 9489. For each test a numberof boardsin
than5N/mm2
•
accordancewithcol4ofTable2shallbe selectedat
8.3 ThermalConductivity random from those inspected under 9.3 and found
conformingto the requirementsinspectedfor under
Thethermalconductivity of gypsum board when
thatclauses.
tested in accordancewithIS9489shallbelessthan
0.25kcaVmh°C. 9A.l Alotshallbedec1aftdashavingfoundsatisfactory
fortherequirementsoftransversebendingifonlyall
9 SAMPLING
the boardstested for these tests under 9.4 pass the
9.1 Lot testindividually.
Allgypsumfibreboardsmanufactured fromsimilar 10 OmONALREQUlREMENTFORECOMARK
materials under essentially similar conditions of
10.1 Geaeral Requirement
production in a day shall be grouped together to
constitutea lot. 10.1.1 Theproductshallconformtotherequirements
ofqualityandperfonnanceasspecifiedinthestandard.
9.1.1 Samples shall be selected and inspected
separatelyfromeachlotfordetenniningitsconformity 10.1.2 The manufacturer shal produce to SIS.
orotherwiseto therequirementsofthisstandard. environmentalconsentclearancefrom theconcerned

StatePollutionControlBbardaspertheprovisionsof
9.2 Thenumberofboardstobeselectedforthesample
2
IS 2095(Part2):2001
thewater(Pnv~ntion tmdControlofPollution)Act a) Manufacturer'snameandtrade-mark,
1974and Air (Pr~vention tmdControl 01Pollution) b) Sizeofboards,
Act.1981alonswiththeauthorization,ifrequiredunder c) Batchnumber,and
the&virorllMnt(Protection)Act,1986,whileapplying d) Thecriteriaforwhichproducthasbeenlabelled
forECOMark. asECOMart,ifapplicableandthelistofidentified
criticalingredientsindescendingorderofquality,
10.2 SpedfleRequirements
percentby mass.
For ECO Markinggypsumplasterboards shall be
11.3 81SCertUleatioDMarldna
manufactured usingphospho-gypsum($~~ 4.1).
NOTE - The manufacturer shan provide documentary Eachboard mayalsobemarked with theStandard
evidence by wayof cenificateor declaration to this effect Mark.
toBureauofIndianStandardlwhileapplyinlfor£COMark.
11.3.1 TheuseoftheStandardMarkisgoverned by
11 PACKINGANDMARKING
the provisionsoftheBureauofIndian StandardsAct,
11.1 Gypsum fibre boards shall be packed so as 1986andtheRulesandRegulationsmadethereunder.
to keepthemdry, freefrommoistureandanykindof Detailsofconditionsunderwhichalicencefortheuse
damage. oftheStandardMarkmaybegrantedtomanufacturers
orproducersmaybeobtainedfromtheBureauofIndian
11.2 Each board shall beclearly and permanently
Standards.
markedwiththefollowing infonnation:

3