Bs 1881 111(2) 1983

~~~
STD-BSI BS 1881: PART LLL-ENGL 1783 m Lb24bb7 ObL353b 855
BRITISH STANDARD
Testing concrete
Part 111.Method of normal curing of test
specimens (20 "Cmethod)
*
rn
*
BS 1881:
Part 111:1983
Incmtiw
Amendment No. 1 and
irnpkmmting
Amendment No. 2 not
publ.ished separately
NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW
COPYRIGHT British Standards Institute on ERC Specs and Standards
Licensed by Information Handling Services

STD-BSI BS 1881: PART LLL-ENGL 1783 Lb2Libb7 Ob13537 791
Issue 1, May 1997 BS 1881 :Part 111 :1983
Page Issue Page
Front cover 2 1
Inside front cover blank 2
a 1 Inside back cover
b blank Back cover
Issue
2
2
2
2
OBSI 1997 a

Issue 2,May 1997
NOTE. The high humidity required in moist air curingrooms is
normally produced by spraying water as a fine aerosol. The
bacteriumLegionella pneumophila is widespread in natureand is
present in the water systems of many buildings. Scale in
pipework and chemical nutrientsin the water supply may
encourage growth of this organism which multipliesbetween
20 "C and about 45 "C. Inhalinginfected aerosols is a known
route for the transmission of Legionnaires' disease. It is
therefore advisable to maintaincold water suppliesbelow
20 "C where possible and to store hot water above 60 "C. Cold
water supplies may be disinfectedby chlorinationto at least 5
mglL free chlorine. Regular periodiccheckingfor the presence
@ BSi 1997
BS 1881:Part I i1 :1983
1. scope
ThisPanof this BritishStandarddescribesthe method of.
normalairing of concrete specimens (cubes,beamsor
cylinders made inaccordancewith Parts 108,109 and 110
of this BritishStandard] at 20 "C for strength testsat ages
of 1day and aver.
NOTE. This titlaof tkpuuMkationsreferred to inthisstandardwe
ï i o n the inridc backpage.
2 Definitions
For the purposesof this Patt of this British Standard,
the definitions given inBS 5328and BS 1881:Part 101
a w b .
3. Apparatus
3.1 Curingtank. A curing tank conmucîedfrom any
material which irof adequatestrength and will resist
corrosion. The internaldimensions of the tank shall be
appropriatefor the number and size of the specimensto be
accommodated, shall permit adequate circulation of water
andshall be such thatspecimenscan beeasily removed.
Domestic supply water shall be used for filling the tank
and for occasional topping up t o maintain a reasonably
constant water level. A t any point in the tank where
specimens are stored the temperature shall be 20 ?r 2 'C.
NOTE 1. in order to achieve this temperature control it may be
necessaryto provide the tank with a lid andlor a water cooling
system in additionto the water heatingsystem.
NOTE 2 .When handling cubes in curingtanks, protective
gloves should be worn.
3.2 Thermometer.suitable for measuringmaximum and
minimummoist air and water curing temperatures.
I
I
I
4. Procedure
Immediately after makingspecimens (see BS 1881:Part 108,
109or 110as appropriate) store them ina placefree from
vibration and inconditionswhich will prevent lossof
1
STD-BSI BS 1881: PART LLL-ENGL 1783 = Lb2LibbS Ob13538 b28COPYRIGHT British Standards Institute on ERC Specs and Standards

BS 1881 :Part 111 :1983 Is
moisture. If it is necessary to move the specimens to the
placeof storage. move them intheir mouldsensuring no
lofsof concrew. Store the specimenseither:
(4inanaamospherewith a re1at.w humidityof notless
than90%ina moistair curing room or acabniet; or
(b)under dampmatting01any other suitable damp
materialwrappedcompletely with polyethylene or
other impervious sheeting.
NOTE. Thepreíerredmethodfor storingspccimansisthat
dcrerikdinbl.
Whichever method of moist air storage is used,maintain the
temperatureof thespecimensat 20 ?: 5 OC if the specimens
onto be testedat an age of 7 days or more, or at 20 I 2'C
ifdwtpccimensoreto be tested atan earlierage.
Denauldspecimens to be tested at 24 h just before testing.
Demouldspecimensto be tested at greater ageswithin the
period 16hto 28 hafter the addition of water to theother
constituents inthe mix unlessthe comete bas notachieved
sufficient suength to enable specimensto bedemoulded
duringthisperiod. Insuchcases,delay demwldingfor a
furthCr 24 h. Duringthis further period, continue the
stongc of the specimens in the moist air conditions.
Markeach specimenclearly and indelibly with an
idemifikationnumber or cude. Unless requiredfor testat
24 h, tither submerge the specimens immediately in the
curingtank or immediately prepare them for transporting
toanother location. Keep all specimenswhich are
irndiouelyvansferred tothe curing tank submergedand
mnovcthem just beforetesting unless itb neoestary to
transportthem toanother location for testing.
Immcdimlyafter removal from the mouldsorfrom the
awingtank. pack specimensto be transported insuch a way
astopreventany significamchangeinmoistuncontent
(JoTE.%s nuy be .diHrnd by usingspecial boxtshaving
-o linedwiai wet felt orother suitabic materhi.
I After filling, seal each box or enclose it in polyethylene.
Alternatively, the specimens may be packed in damp
sand or in wet sacks and enclose in a polyethylene bag.
Storethetramported specimens inthe curing tank for not
l e s than24h beforethe t*heof testing. This transfer of
ZpCCimCns may take placeat any time betweendemoulding
of the specimensand24hbefore thetime of testing but it
shall kefíected in asshort a time asis paacticabte.
inorder IDprovideadequate circulationof water and to
facilitate theremovalof thespecimensfrom thecuring tank
emre that there isat least 15mmof water horizontally
between spee*imtmand beweenspecimens and the sidesof
the tank.Continue the airing inwater as long as possible
uptothe time of testing.
Record the daily maximumand minimum moist air and
water curing temperatures using either maximum and
;sue2, May 1997
minimumthermometers or continuous recording
instruments.
5. Age of test&mens
T e m shall becarried Out within thefollowing tolerances
ontheagesfor testing.
*30minfor ages upto and including 30h
i2 hfor agesabove30hand upto and including 100h
f8 h for agesabove 100hand up to and including
60days
i 1day for agesabove 60days. .
l h e ages shall be calculated from thetihe of adding the
water to the other materials inthecomete mix.
NOTE 1. Preferred agesfor testing are 1.2.3.7,14 and 28 days.
13 and 26 weeksand 1year.
NOTE2. If the zest resultsare usedtocanparethe pedonnæaceof
diíferent testing machinesdorert o i c m may be appropriate.
6. Report
6.1 General. The report shall affirm lhat the spechens
were cured inaccordancewith this Part of this British
Standard.The report shall statewhether ornota artificate
of sampling and specimenpreparationisavailable.
If available, a copy of the certifkateshall be provided.
6.2 Informationto be indudtdinthe report
6.21 Mandatoryinformation l h e followinginformation
shall be included inthe testreport:
(a) identification numberMcodesof rpeCimem;
(b) location of moist air curing;
(c) method of moistair curing;
(d) period of m0-mair curing;
(el maximum and minimummoistair andwarn curing
temperatures;
(f) certificatethatcuringhasbeencarriedout in
accordancewith this Pattof this standard.
6.22 Optionalinformarion. If requested the foliowing
information shall be includedinthe testreport:
(a) time of adding the water t o the other materials in
the concrete mix;
(b) time of makingspecimens;
(cf time of immersion of specimens incuring tank($),
ifapplicable;
(d) time of removal of specimensfrom curing tank(s),
ifapplicable:
(e) temperature recordduring moistair airing:
(f) temperature recordduring water curing;
(9) ageís) at which specimens are to be tested.
Q BSI 1997
2

~
Issue 2,May 1997 BS 1881 :Part 111 :1983
Publicationsreferredto
I 8s 1881 Testing concrete
Part 101Methodof samplingfresh concrete onsite
Part 108Methodfor makingtest cubesOut of fresh concrete
Part 109 Methodfor makingtest bermart of frsih -Cete
Part 110Methodfor makingtest cylindmart of fresh concrete
Part 112' Methods of acceleratedcuringof test cubas
Part 113' Method of makingandairing no-fines test cubes
Bs 5328 Methockfor specifying concrete, includingreadymixedconcrete
'Referred to in the foreword only.
Q BSI 1997

Issue 2,May 1997
6102
9387
This British Standard, having been prepared under the direction of
the Cement. Gypsum, Aggregatesand Quarry ProducuStandards
Committee. was publishedunder the authority of the Boardof BSI
mdcomes into effect on 29July 1983.
@British Standards Institution, 1997
ISBN O 580 13332X
July 1989
May 1997
Indicated by a sideline in the margin
Indicated by a sideline in the margin
BSI is the independentnationalbody responsiblefor preparing
BritishSîandards. It presents the UK review on standards in
Europeand at the internationallevel. It is incorporatedby Royal
Chafier.
Contracirequinmonts
A BritishStandarddoes not purportto includeallthe necessary
provisionsof a contract. Usersof BritishStandardsare responsible
for their Conectappïition.
Revisions
Br-WshStandardsare updatedby amendment or revision. Usersof
BritishStandardsshould make surethat they possessthe latest
amendmentsor editions.
It isthe constant aim of BSIto improvethe quaii of our products
and senrices.We would be grateful if anyonefinding an inaccuracy
or ambiguitywhile usingthis British Sîandardwould informthe
Secretaty of the responsibletechnicalcommittee, the identity of
which can be found on the insidefront m e r . Tel: 0181 996 9000;
Fax: 0181 9967400.
BSI offers membersan individualupdatingservice called PLUS
which ensuresthat subscribersautomaticallyreceivethe latest
editionsof standards.
BS 1881:Part I1 I :1983
Buying standards
Ordersfor all BSI, internationaland foreign standardspublications
should be addressed to Customer Servioes. SalesDepartmentat
Chiswick: Tel: 0181 996 7000;
F a : 0181 996 7001.
Inresponseto orders for internationalstandards, it is BSI policyto
supply the BSI implementationof those that have beenpublished
as British Standards, unlessotherwiserequested.
Informationon standards
BSI providesa wide range of informationon national, European
and internationalstandardsthrough its Library, the Standardline
Database, the BSI InfomationTechnologyService (BITS) and its
TechnicalHelpto Exporters Service. Contactthe Information
Department at Chiswick: Tel: O181996 7111;
Fax: 0181 996 7048.
Subscribingmembersof BSI are kept up to date with standards
developments and receive substantialdiscountson the purchase
priceof standards. For details of these and other benefits contact
Customer Services, Membershipat Chiswick: Tel: 0181 996 7002;
Fax: O181996 7001.
Copyright
Copyrightsubsistsin all BSI publications. BSI also hdds the
copyright, in the UK, of the publicationsofthe international
standardizationbodies. Exceptas permittedunder the Copyright,
Designs and Patents Act 1988no extractmay be reproduced,
stored in a retrievalsystem or transmitted in anyform or by any
means-electronic,photocopying, recordingor otherwise-without
prior written permissionfrom SI.
This does not predudethe free use, inthe course of implementing
the standard, of necessarydetails such assymbols, and size, type
or grade designations. If thesedetailsare to be used for any other
purposethan implementationthen the prior written permissionof
BSI must be obtained.
If permissionis granted,the terms may induderoyaltypayments
or a licensingagreement. Detailsand advice can be obtainedfrom
the CopyrightManager, BSI, 389Chiswick High Road, LondonW4
4AL.
~ ~
Committeesresponsible for this British Standard
This British Standardwas published under the directionof the
Cement, Gypsum, Aggregatesand h a w Products Standards
CommitteeCAB/-. Itspreparation was entrusted to Technical
Committee CAB14 upon which the following bodieswere
represented:
British Aggregate Construction Materials Industries
British Precast Concrete Federation Ltd.
British Ready Mixed ConcreteAssociation
Cement Admixtures Association
Cement and ConcreteAssociation
Cement Makers' Federation
ConcreteSociew Limited
County Surveyon' Society
Department of the Environment (Building Research Establishment)
Depanment of the Environment (PSA)
Department of the Environment (Transport and Road Research
Department of Transport
Electricity Supply Industry in Englandand Wales
Laboratow)
Amendmentsissued since publication
Federation of Civil EngineeringContractors
Greater London Council
Institute of ConcreteTechnology
Institution of Civil Engineers
Institution of Highway Engineers
Institutionof Municipal Engineers
Institutionof Structural Engineers
Institutionof Water Engineersand Scientists
National Federation of BuildingTrades Employers
Royal Institute of British Architects
Royal Institution of CharteredSurveyors
Sandand Gravel Association Limited
Society of Chemical Industry
The following bodieswere also representedin the drafting of the
standard. through subcommitteesand panels:
ûritish Civil EngineeringTest Equipment Manufacturers' Association
Coopted members
Amd. No. Dateof issue Text affected
I
Bntich Standards Institution ~389Chiswick High Road London W4 4AL.Tdephone O181 996 9ooo .Fax O181 996 7400
CAW4

Bs 1881 111(2) 1983

Recommended

Recommended

More Related Content

What's hot

What's hot (20)

Viewers also liked

Viewers also liked (20)

Similar to Bs 1881 111(2) 1983

Similar to Bs 1881 111(2) 1983 (20)

Bs 1881 111(2) 1983