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The Right to Information, The Right to Live

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Invent a New India Using Knowledge

IS 2386-7 (1963): Methods of Test for Aggregates forConcrete, Part VII: Alkali Aggregate Reactivity [CED 2:Cement and Concrete]

ls:2sss (Putv5)-196s

Indian StandardMETHODS OF

TEST FOR AGGREGATES FOR CONCRETEPART WI ALKALI AGGREGATE REACTIVITY

Cement and Concrete Sictional Committee,BDC 2R#prumtiq

SHU K. K. N-m The Oancrete Association of Indis, Bombav

Mmtbtrs

SHm K. V. TUAOANEY (.41km.tc taShri K. K. Nambiar)

SHIU K. F. ANTIA M. N, Dam.r & Go Private Ltd , Calcutta

SHRI P. S. BHATNAWU! Blxtkra Dam Designs Directorate, New Delhi

DE L C. DOS M. Pus CUDDOU Central Wster & Power Canmission (Ministry

& Power)

SMIU Y. K. MURTHY (A&nud8)

SHaI N. D. Dumwx Khira Steel Works Private Ltd , Bombay

Snru N. G. DEWAN Central Public Works Depwtment

SUPUUWENDINO ENO:NEER, 2ND CtitGLB (~knwh)

of Irrigstitln

h R. R. H,SI-IT.ANOAIX The .AasoAted Cement CompaoiU Ltd , Bombay

SiIm V. N. PAI (AkntaIc)

SHitl P. C. HAZR.4 Geological SUIVey of India, Calcutta

JOINT Dwmxon STAMWUUX (B & S) Rcsearcb, Deigns & Staridartis Organization (Miniatw of

Railways)

AUM,ANTDI.EXXOJI STAND.ARLM(B & S) (Alimteu) .SHRI S. B. JOSH: S. B. Jmhi & C% Private Ltd , Bombay

S*WU M. M..LAL U. P. Government Cement Factory, Ch.rk

SHRI B. N. MAJUMDAX Directorate Genersl of Supplies & Disposals (Mioistry ok

I!konomic & Defence Co-ordination)

SHN P. L. DAS (Alkrnizk)

PROF S. R. MC.HIIA Central Road Research Institute (CSIR), New DelM

SHRI N. H. MOHtLE The Concrete Asw&ation of India, Bombay

SHIU S. N. MUKERJI Government Test HOUYC, Calcutta

SI?W N. C. SEN GUPTA (Ahmati)SHRI ERACH A. NADWLSHAH Institution of Engineers (India), Calcutta

SHJIJ C. B. PATIX National Buildings Organisation (Miniitq of Wwkt, Housing

& Rehabilitation)

SHRI RABINDER SINOH (r4ffmMtt)

%lOP ~. s. RAUASWAUY Central Building Research Institute (CSI R), Roorkee

.s~w K. SWA PRASAD (Affmwti)

SHIM T. N. S. RAO G n India Ltd , Bombay

SHR! S. R. PINHEIRO (Alhmak)

(Ctndirwed on Page 2)

INDIAN STANDARDS INSTITUTIONIUANAIC BHAVAN, 9 BAHADU= S- WAR MARC

NEw DBLEI1

xs:2386(Part x7m-19f33(Continwfjh #age 1)

Mnm6m R@Jmlis6REPItESENTAmW Martin Bum Ltd , Calcut@

SnnJ Nuu.x Cw.NnU ROY Dalmia Cement (Bbarat) Ltd , Calcutta

S15mTAXY @tml B4@ of Irrigation & Power (MinisW of Irrigation

& Power)

BIUO G. S; SnfOrA Engineer.in-CMefs Br*O+ AITOY H~~qua*m

.%m R. S. M81u??DRu (.4h8m.4)

DR BII. SOIULAMJU Indian Roads Con@e=, NCW ~M

SW J. M. TNWS\

R@3~ Wing, -Xw Of Tra~P~ & COmm~icatim

SHnt N. H. KE8WANI (Akntak)

DR H. C. VIIVDWARAYA, Director, 1S1 (Ex-o& Mm&r)DCPUty Dkctor (Bldg)

&crdmy.%m A. PtUTXM RAJ

Extxa Asiitant Director(Bldd,IsI

Concrete .%tbcommitle%WC 2:2

ComlowrSHRI S.B. JosH[

MmhrsAMISTANTDnumron STAND- (E k S)SmU N. H. BMACWANANI

RK 1. CL Do: M. PAU Cumov

%iR[ Y. K. MoxmtY (Akmnak)

SHJU P. L. DAs

SHK1 B. N. mJUMUAU (~~ti)

DIRIICCOR

-SWU V. N. GUNAJi

SHIU M. A. HAFECZ

SHRI B. S. SIINAUUUTHY (Afkmati)Sum C. L. H.UWA

SHm P. C. HAZUA

SIIm K. K. Ti-aS.mI C. L. N. IYENGAU (Mt#rn4)

Dn M. L. ,Yum

PRoF G. S. RAMAIWAMV

SH~ K. SWJA Pm&m (Akin@

SMn, T. N. S. RAO

%ta[ S. R. Rmmtxo (A14ma14

su DINO ENOINIEii, 2ND CmcMZSmaI O, P. Cow (Affmno@

SimJ J. M. TWHAN

Smu R. P. SnxA (Akmab)

SHIU H. T. YAN

S. B. Joahi & Co Private Ltd , Bombay

Rmemch, Designs & Standards Organization (Ministry or

Railways)

Engioeer-in.Chie~: Branch, Army Headquartm

CentraJ Water & Power Commission (Mioistry of Irrigation

& Power)

Directorate General of Supplies & Disposals (Ministry of

Economic & Dcfencc Co-ordination)

Lngi;eering Research Laboratory, Hyderabad

Malmrubtia PubIiu Works Department

NtdionaJ Build-s Organisation (Minioxy of Works, Housing

& Rehabtitation)

Central Water & Power Co mmi.tion (Ministry of Irrigatkm

& Power)

GZOlogicsJ Survey of India, Calcutta

Tbe Concrete Association of India, Bombay

Central Road Rescamh Institute (CSIR), New Delhi

CentraJ Building Rcsearcll Imtitute (CSIR), Roorkc.c

Gammon India Ltd , Bombay

Central Public Works JAm8rtment

Rods Wing, Minituy of Tmmpmt & Cammuaicatiom

Bnithtite Bum & k=aP Ckuutmction Co M , Calcutta

2

J

IS : 23S6 (Part VII) -1963

Indian ~StandardMETHODS OF

TEST FOR AGGREGATES FOR CONCRETEPART Vll ALKALI AGGREGATE REACTIVITY

O. FOREWORD

0.1 This Indian Standard (Part VII) was adopted by the Indian StandardsInstitution on 24 September 1963, after the draft finalized by the Cementand Concrete Sectional Committee had been approved by the BuildingDivision Council.

0.2 One of the major contributing factors to the quality of concrete is thequality of aggregates used therein. The test methods given in this standardare intended to assist in assessing the quality of-aggregates. In a givensituation, for a particular aggregate, it may not be necessary to assess allthe qualities, and, therefore, it is necessary to determine beforehand thepurpose for which a concrete is being used and the qualities of the aggregatewhich require to be assessed. Accordingly, the relevanttest methods maybechosen from amongst the various tests covered in this standard. For theconvenience of the users, the -test methods are grouped into the followingeight par~ of InQian Standard Methods of Test for Aggregates for Concrete(1S : 2386-1963).

Part I Particle Size and Shape

Part 11 Estimation of Deleterious Materials and Organic Impurities

Part III Specific Gravity, Density, Voids Absorption and Bulking

Part -IV Mechanical Properties

Part V Soundness

Part VI Measuring Mortar Making Properties of Fine Aggregate

Part VII Alkali Aggregate Reactivity

Part VIII Petrographic Examination

0.3 The Sectional Committee responsible for the preparation of this standardhas taken into consideration the views of concrete specialists, testingauthorities, consumers and technologists and has retated the standard to thepractices followed in this country, Further, the need for international co-ordination among standards prevailing in different countries of the worldhas also been recognized. These considerations led the Sec.ional Committee

3

Isrz3$6(Part vlI)-1963

to derive assistance from the published standards and publications of theArncriean Society for Testing and Materials.

0.4 Wherever a reference to any Indian Standard appears in these methods,it shall be taken as a reference to its latest version.

-0.5 For the purpose of deciding whether a particular requirement of thisstandard is complied with, the final value, observed or calculated, expressingthe result of a test or analysis, shall be rounded off in accordance withIS :2-1960 Rules for Rounding Off Numerical Values (Raid). Thenumber of significant places retained in the rounded off value should be thesame as that of the specified value in this standard.

04 This standard is intended chiefly to cover the technical provisionsrelating to testing of aggregates for concrete, and it does not include allthe necessary provisions of a contract.

1. SCOPE

1.1 This standard (Part VII) covers the following two methods of test fordetermining the potential reactivity of aggregates:

a) Determination of Potential Alkali Reactivity of Cement-AggregateCombinations (Mortar Bar Method);

b) Determination of Potential Reactivity of Aggregates (ChemicalMethod).

2. DETERMINATION OF POTENTIAL ALKALl REACTIVITY OFCEMENT-AGGREGATE COMBINATIONS (MORTAR BARMETHOD)

2.1 Object This method of test covers the determination of the potentialexpensive Alkali reactivity of cement-aggregate combinations by measuringthe expansion developed by the combinations in mortar bars during storageunder prescribed conditions of test.

2.2 Apparatus The apparatus shall consist of the following:a) Scales The seal es used in weighing materials for mortar mixtures

shall conform to the following requirements:

On scales in use, the peniissible variation at a load of 2000 gshall be +20 g. The permissible variation on new scales shallbe one half of this value. The sensibility reciprocal shall be notgreater than twice the permissible variation.

b) Weights The permissible variations on weights med in weighingmaterials for mortar mixtures shall be as in Table 1. Thepermissible

4

Is:23a6(PBrt vsx)-1963v+$~~i~ on new weights sh~ M one half of the valua given h

TABLE I PERMISSIBLE VARIATIONS ON WXGHTS

WEIGHT %RMXSSIBLEVAIISATIONSONWEIONI% INUSE,

PLusOR Mmua

g g

1000900 w750 040500 0.35

0.30E 0.25200 0,20100 0.1550 0.1020 0.0510 004

0.032 0.021 001

c)

d)

e)

&OCJ Squ~re-hole, woven wire cloth sieves conforming toIS : 460-1962 Specification for Test Sieves (Revised).Glass Graduates Glass graduates of 200 ml capacity used for measur-ing the mixing water shall be calibrated at 20C with a permissiblevariation of +2 ml. These graduates shall be subdivided to atleast 5 ml. The main graduation lines shall be circles and shall benumbered. The least graduations shall extend at least one-~eventhof the way around, and intermediate graduations shall extend atleast one-fifih of the way around. The graduation lines may beomitted for the lowest 10 ml.

Secimen Moulai Moulds may be either single or double (seeFig. 1 and 2). The single mould is preferred. Moulds shall providefor 25x 25 mm test specimens of 250 mm effective gauge length.The eflkctive gauge length shall be considered as that length betweenthe -innermost points of the gauge studs. The parts of the mouldsshall be tight-fitting and firmly held together when assembled.The moulds shall be made of steel or other hard metal not readilyattacked by the cement paste. The sides of the moulds shall besufficiently rigid to prevent spreading or warping. Each endplate of the moulds shall be equipped to hold properly m place,during the setting period, a metal gauge stud (see Fig. 1 and 2)having a diameter of 6?3 mm (w Note). The gauge studs shall be

5

IS :2386 (Part VII) -1963\

set so that their principal axes coincide with the principal axis of thetest specimen, and shall extend into the specimen 150 &O.5 mm.The distance between the inner ends of the gauge studs shallbe 250+2.5 mm. The width and height of the moulds, measuredseparately for each specimen compartment, shall be 25 -&O.75 mmboth for new moulds and for moulds in use.

I$OTE Stainless steel gauge studs of some compositions have corroded under theconditions of use required in this test method.

f) .14ixing Bowl The mixing bowl shall be of stainless steel. Itshall have a capacity of 5 to 8 litres and shall conform in shape anddimensions to Fig. 3.

g) Tamper - The tamper shall be made of a non-absorptive, non-abrasive material, such as medium-hard rubber or seasonedoak wood rendered non-absorptive by immersion for 15 min inparaffin at approximately 200C , and shall have a cross section of12.5 x 25 mm and a convenient length (125 or 150 mm). Thetamping face of the tamper shall be flat and at right angles to thelength of the tamper.

h) Trowel The trowel shall have a steel blade 100 to 150 mm inlength, with straight-edges.

j) Containers Covered containers for storing the test specimens shallbe constructed of material, that is, resistant to corrosion under theconditions of use, They shall be so constructed that, when used forstoring specimens, the loss of moisture is prevented by tight-fittingcovers or by sealing, or by both. Provisions shall be made fors~pporting the bars in a vertical position with the lower end of thebar approximately 25 mm above the surface of water in the container..The weight of the specimen shall not be supported on the metalgauge stud. Spacers shall be provided to insure that the specimensdo not touch the sides of the containers or each other. Provisionsshall be made to prevent water splas~g and condensate drippingonto. the specimens.

k) Length Gm@arator The comparator for measuring the length changeshall be of such design as to provide or permit the following charac-teristics (we Note l):

1) A positive means of contact with the stud that will insure re-producible measurements of length.

2) A high-grade dial micrometer or other measuring device gradua-ted to read in 0.002 mm units, and accurate within 0.002 mm inany 0.02 mm range, and within 0.004 mm in any 0.25 mm range(see Note 2).

3) Sufficient range in the measuring device to allow for small varia-tions in the gauge length of various specimens (see Note 3).

6

IS : 23S6 (Part VII) -1963

t,~PLAN OF DOUEILE MOULD

tlfJPLAN OF SINGLE MOULD [GAUGE STUD CLEAN-OUT HOLE

HOLDER ~~GAuGE LENGTH 250 t 2.s+

J

4GAUGE STUO

SPACER SCREW Jy--t+ 280~j+

[ ~320+BASE PLATEPITCii DIAMETER AFTER

POLISH MAX 6.324 AND MIN 6.210

s;;%L$go

ENLARGED DETAIL OF GAUGE STUD GAUGE STUD HOLDER

------ -, ---- /-BASE PLATE

Ie5 -.?-

Ll!i E

----

---

--

,,

~354 ~ GAUGE STUDSPACER SCREW

-. -,..-

\/rGAUGE s7uoSPACER SCREW

IiFHEr=: j5_ ,,=,l-u-l

DOUBLE MOULD END PLATE SiNGLE MOiJLD END PLATE

All dimensions in millimetres.

FIG. 1 MOWLDSUsmC) KNURLED AND TISREADED GAUGE STUDS

7

Ist2386(Part vlx) -1963

I+ PLAN OF DOUBLE MOULD

L)o PLAN OF .SINGLE MOULD

l------250 25lII

5

1- 290+ELEVATION OF MOULD

6*3 #

APPROXIMATEE LYtiEM1-SPHERICAL ANO

4rre4

+3SMOOTH

ENLARGEO DETAIL OF GAUGE STUD

9A ~:EPAT E

\ /f

00WE1. PINS PRESSFITTED IN END PLATE ,/-BA~:R;t#E

lit..-----e5 :=:--L -------. iikHE---7,, -.=-,;L3S4 ~LOOSE FIT HOLES

FOR GAGESTD~ 354DOUBLE MOULD SINGLE MOULD

END PLATE ENO PLATE

Ncmt 1 Tolerances on 25 mm cross-sectional dimensions of the moulds shaU be +0.75,,mm.NOTW2 Gauge studs shall penetrate spckimens not Iessthan 15.0 mm or more than 16.5 mm.

All dimensions in millimetrcs.Fm. 2 Mouws UsrNo SMOOTHGAWE Smrm

8

Iss2sni@utvJ I)-1963

.+.+5?5..0--4

Fm. 3 Mtxmo kWL

4) Means for checking the measuring device at regular intervalsagaihst k standa$daf twferwtce (sss Notes 4 and 5).

5) Gonvcnient and rapid measurement of specimens.

N- 1 Sketch of one type @f instrument that has been found satisfactory k shownin@@ 4. In thin inatru~, the contact s@aces are-provided by slightly rounded[y) machiocd and PMdqxb tm the qwge studs m the specimen,and by plane,_ -ace heat.treated termmalg of the mstrunaent. The-terminals shall be tittcdwitkdiars 10 mm to 125 mm Joq and having an inside diameter 0.5 mm ptert.kkn- ~ diametm

Is : 23s6 (Part VII) -1963