IS 15173: Methods of Test for Tars and Bituminous Materials - Determination of Breaking Point for Cationic Bitumen Emulsion

12 Pages·2002·1.1 MB·English

by  Bureau of Indian Standards

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IS 15173 (2002): Methods of Test for Tars and Bituminous
Materials - Determination of Breaking Point for Cationic
Bitumen Emulsion [PCD 6: Bitumen Tar and their 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””ै”
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Is 15173:2002

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Indian Standard
METHODS OF TEST FOR TARS AND BITUMINOUS
MATERIALS —DETERMINATION OF BREAKING
POINT FOR CATIONIC BITUMEN EMULSION
Ics 75.140

(3 BIS2002
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002
.
August 2002 Price Group 3
Bitumen, Tar and Their Products Sectional Committee, PCD 6
FOREWORD
This Indian Standard wasadopted bytheBureau ofIndian Standards, afterthedrafi finalized bythe Bitumen,Tar
and Their Products Sectional Committee had been approved by the Petroleum, Coal and Related Products
Division Council.
Bitumen emulsions areheterogeneous two-phase systems consisting oftwo immiscible liquids, that is,bitumen
and water. The bitumen is dispersed throughout the continuous water phase in the form of discrete globuIes
typically 0.1 – 5.0mm in diameter which again areheld in suspension by electrostatic charges stabilized by an
emulsifier.
Neutralization of these electrostatic charg~s is known as breaking of the bitumen emulsion. The individual
bitumen pa~icles coalesce andjoin together to form a deposition or coating once the charge isneutralized by
contact with the aggregates.
In surface dressing construction, the spreading of stone aggregates isresorted to only when the emulsion fiIm
turns from brown to black. At this point, it is assumed that the bitumen emulsion has broken. The breaking
point of bitumen emulsion can, however, be established more precisely by the addition of silica powder under
controlled conditions. The amount of silica powder needed to induce the breaking of bitumen emulsion isthen
correlated with the breaking time.
The breaking point not only helps incaseof construction but alsodistinguishes the rate of breaking of different
types of emulsion.
The composition of the Committee responsible for the formulation ofthis standard is given in Annex A.
In reporting the results of a test or analysis in accordance with this standard, if the final value, observed or
calculated, istoberounded off, itshallbedone inaccordance with IS2:1960 ‘Rulesforrounding offnumerical
values (revised)’.

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Is 15173:2002
Indian Standard
METHODS OF TEST FOR TARS AND BITUMINOUS
MATERIALS — DETERMINATION OF BREAKING
POINT FOR CATIONIC BITUMEN EMULSION
1 SCOPE Before starting the test, the silica fines shall be dried
inan oven at 120°Cand kept ina sealed container.
This standard covers method for determination of
breaking point of a cationic bitumen emulsion with
5APPARATUS
respecttomineral fines.Itappliestoemulsion ofpure
bitumen and toemulsion made of cut-back or fluxed 5.1 Conical shaped pan with a non-stick surface,
bitumens. having an opening of 2.5 mm diameter such that the
flowoffinesisbetween 0.3to0.5g/sorsandpouring
2NORMATIVE REFERENCE cylinder device with which itispossible toobtain the
samerate of flow. An example of theapparatus tobe
The following Indian Standard contains provision
used is shown inFig. 1to 4.
which, through reference in this text, constitutes
provision of thisstandard. Atthetimeofpublication, 5.2Enameldishmeasuring 20cminsidediameter and
the edition indicated was valid, All standards are 10cm high.
subject torevision andparties toagreementsbasedon
5.3 Nickel spatula, 20 cm long.
this standard are encouraged to investigate the
possibility of applying the most recent edition ofthe 5.4 Thermostat regulated tank.
standard indicated below:
5.5 Balance capable of weighing to an accuracy
ISNo. Title of0.1g.
334:2002 Glossmyoftermsrelatingtobitumen
and tar (third revision) 6 PREPARATION OF THE SAMPLE
3 TERMINOLOGY 6.1Asample of bitumen emulsion isfiltered through
a mesh of the size of 600 pm and made thoroughly
Forthepurpose ofthis standar~ thedefinitions given
homogenized by stirring.
inIS 334 and the following shall apply.
6.2 The amount of reference fines necessary for the
3.1 Breaking Point
test is taken from a stock that has previously been

The amount of reference fines requi red to induce the homogenized.

breaking point of 100 g of emulsion is to be added
7 PROCEDURE
steadily to the emulsion according to a conventional
procedure. The breaking point isthen calculated. 7.1Keeptheemulsiontobetestedand 1kgofreference
fines in sealed containers in a thermostat controlled
4 REAGENTS
tank, regulated to a temperature of 25 * 1‘C for one
hour before carrying out the test.
4.1 Silica Fines
7.2 Weigh to an accuracy of 0.1 g mass (ml) of the
Natural silica fines having silicon oxide (SiOJ
enamel dish containing the nickel spatula.
percentage of more than 98 pet$ent and density of
2.65g/mlwithneutralpH value.Therangeofparticle 7.3Weighapproximately 100gtowithin 0.1 gofthe
sizeshall beasgiven inTable 1. emulsion sample into the dish. The mass of the dish,
spatula and emulsion together, determine to within
Table 1Range of Particle Size
0.1g (m*).
ResidueonSieve,~m Percentage
7.4The massof added emulsion(E) isequal to
(1) (2)
100 lto5 E=m2–m,
80 5to 10
63 15t025 7.5 Placetheenameldishinthethermostatwontrolled
50 loto20 tankinwhichthewater ismaintained atatemperature
40 25to35 of25 * lot.
Passing40 17t030
Is 15173:2002
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SCREW F/90 N3X 15,
STAINLESS STEEL
NOTE—Pan,TrayandPlateareofnon-PlasticizePdVC
FIG. 1GENERALVIEW OFTHECONICALPAN

r
Alldimensionsinmillimetres
FIG. 2 THE PAN

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Is 15173:2002
2X27
I 4-1
tl t
// a
U, WA I 1 1
1! I A
14w
T
4 CHANNEL 5 X 5
— —.— .—-— .— m —-— .- —
%
-zJ
45
73 -
Alldimensioninsmillimetres.
FIG. 3THE TRAY
I I I I I
L (
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4dn
1-

35
7’
k
z’
TO BE PIERCED
4 Tr 03.2
-/
ON MOUNTING
COUNTERSUNK
90” prf 1.5
Alldimensionsinmillimetres
FIG. 4 THE PLATE
3

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IS 15173:2002
7.6Fillthepanwiththereference finesthathavebeen 8.LI Interpretation of Results
kept at 25°C.
The grades of emulsion sitall be identified based on
7.7 Put the pan containing approximately 500 g of the breaking point (Ic)values obtained at8.1 asgiven
reference fines on itssupport. below:
7.8 open the pan trap, The fines then drop through a) If 1=is less than 20, it shall be identified as
steadily into the dish. At the same time, thoroughly rapid setting (RS)grade;
mix 1turn per second, using the spatula. b) If 1=is 20-40, it shall be identified as
medium setting (A@ grade; and
7.9 Close the trap when the mixture becomes pasty
and anisolated clotforms not adhering tothe sidesof c) Iflcisabove40, itshaIlbeidentified asslow
the dish. This clot formation is characteristic of setting (SS) grade.
breaking of emulsion. 9 TEST REPORT
NOTE—Withcertainemulsionstheformationofaclotisnot
Thetestreportshallincludethefollowing information:
clearanddoesnotallowaproperresulttoberecorded.Ifthisis
thecase,itshallbementionedinthetestreport. a) Thetype ofemulsions tests;
7.10 Re-weigh the dkh with the nickel spatula to b) The results obtained, notably if the forma-
within 0.1 g after having wiped the spatula. This is tionofclotisditlicult anddoesnotprovide a
referred to asm3. clear test resttlc
c) Grade of emulsion; and
7,11 The added mass of fines (m) isequal to
d) Anydetailsnotdealtwithinthestandard and
m=m, –mz
any incidents likely to have htfluenced the
results.
8 CALCULATION
10 PRECISION
8.1 The breaking point (IJ of emulsion iscalculated
asfollows: 10.1 Repeatability
Theresults obtained by the same operator shall not
Ic=:XIOO
differ bymore than 0.03 IC.
10.2 Reproducibility
where
E = mass of emulsion; and Preliminary laboratory test results have led to this
repeatability value.Other testsaretobecarried outto
m = mass of reference fines added.
confirm this value and also to add a value for
When presenting the results, give the breaking point
reproducibility.
in relation to silica fines. The breaking point is the

mean of the results of three tests.

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IS 15173:2002
ANNEX A
(Foreword)
COMMITTEE COMPOSITION
Bitumen, Tar and Their Products Sectional Committee, PCD 6
Organization Representative(s)
CentralRoadResearchInstitute,NewDelhi PROFP.K.Won (Chsw”nnan)
SmuSum BOSE(AlternateI)
DRP.K.Jm (AlternateII)
BharatPetroleumCorporationLimited,Murnbai SmuJ.A.Jmut
~ Nozm~ORGE(~/ternate)
BuildingMaterialsandTechnologypromotionCormcil,NewDelhi SsmtRK.Cl!tLY
SmuB.Am Kw(Ahernafe)
CentralFuelResearchInstitute,Dhanbad D@remmr) A.BHAmAaYA
SmrU.BHAnACIiARY(AAlternate)
CentralPublicWorksDcpartmengNewDelhi SummmmsmEtwuwm
Exzctmw Exarma (Alternate)
CochinRefineriesLimited,Co&in SmuvP.ArLY
SrmrR.Vmtroom-(Altsrrrate)
DirectorateGeneralofSuppliesandDkposals,NewDelhi fhF.CTOR
DkectorateofGeneralBorderRoads,NewDelhi Smus.s.PGRWAL
SstruA.K.GrmA(Alternate)
DrUppal’sTestingandAnalyticalLaboratory,Ghaziabad SmrRS.S~
DurgapurProjectsLimited,Durgaptsr EmH.$.S~
Engineer-in-chiefs Branch,ArmyHeadQuarters,NewDelhi COLV.K.P.S-
LTCOLR.S.Bwuwvw (Alternate)
HighwayResezuchStation,Chennai DrREcroR
Dmrrv Dtro3xrR(Alternate)
HindustanColasLimited,Mumbai SHSPU.RAtENDRAN
SmrrH.P.mratwam (Abnate)
HirrdustarrPetroleumCorporationLimited,Mumbai Sm S.K.BHATNAGAR ‘.. .
.%rrrAt.S.Prwwuwr (Alternate)
IndianInstituteofPetroleum,DebraDun klt U.c. GUFTA
SmuMosmAtwm(Ak-rrate)
Indian011CorporationLimited(MarketingDWision),Mumbai Star R.S.StSODIA
SrrrulkmKw (Alternate)
Indian0]1CorporationLimited[(R&D)Centrc],Faridabrrd SmuB.R.TYAGI
SmtM.P.lb~ (Afterrrde)
IndianOilCorporation(R&P),NewDelhi SrmrU.K.BMW
SrmtS.K.Prwmo(Alternate)
IndianRoadCongress,NewDelhi SsrtuK.B.R.uom
SssarA.V.Smm(Afternate)
LloydInsulations(India)Limited,NewDelhi SrsroMGMTKHANNA
SWK.K.- (Alternate)
MadrasRefineryLimited,Chennai SmrrM.S.SwYm Srrrmmt
SW B.S~ (Alternate)
MinistryofDefence(DGQA),NewDelhi SmuK.H.G.mom
SmuA.K.SW (Alternate)
MinistryofSurfaceTransport(DepartmentofSurfaceTransport),NewDelhi SrnuC.C.BHAmACHARYA
StarrS.P..%rms(+Alternate)
NationalBuildingOrganization,NewDelhi SsrruA.K.L&
SrmA.G.DHONGAD(AElterrrde)
.
NationalTestHouse.Kolkata .%ttuA.K.Cswm.moaW
SsiruS.K.AGARWA(LAlternate)
(Continued onpage 6)

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