Is.2094.3.1999-Part3-Heater for Bitumen (Tar)

8/13/2019 Is.2094.3.1999-Part3-Heater for Bitumen (Tar)

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Disclosure to Promote the Right To Information

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and whereas the attached publication of the Bureau of Indian Standards is of particular interest

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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.

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IS 2094 (Part 3) : 1999(Reaffirmed 2009)

(Superseding IS 4198)Edition 1.1

(2000-03)

Indian Standard

HEATER FOR BITUMEN (TAR)

AND EMULSION SPECIFICATIONPARTS EMULSION

(Incorporating Amendment No. 1)

ICS 91.220.75.140

BIS 2002

BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

Price Group 3


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Construction Plant and Machinery Sectional Committee, HMD 18

FOREWORD

This Ind ian Sta nda rd (Par t 3) was adopted by the Bure au of Indian St anda rds , after the draftfinalized by the Construction Plant and Machinery Sectional Committee, had been approved bythe Heavy Mechanical Engineering Division Council.

Construction Plant and Machinery Sectional Committee had published the following IndianStandards:

IS 2093 : 1974 Specification for dist ributors for hot ta r and bitumen (first revision )

IS 2094 : 1996 Heate rs for bitumen (tar) and emulsion Specification (second revision )

IS 4198 : 1967 Specification for emulsion spraying machine for roads

The above standards are related to the same subject and, therefore, the Sectional Committee whilerevis ing IS 2093 and IS 4198 decided th at the revision of these st and ards be made as Par t 2 and

Part 3 respectively of IS 2094 and the existing IS 2094 : 1996 be treated as Part 1 of IS 2094. Aspe r t he decision, the sta nda rds now covered un der IS 2094 shal l be as under:

IS 2094 (Par t 1) Hea ter for bitumen (ta r) and emulsion Specification : Par t 1 Bitumen

heaters

IS 2094 (P ar t 2) Hea ter s for bit umen (tar ) and emulsion Specification : Par t 2 Bitumen

sprayers

IS 2094 (Par t 3) Heate rs for bitumen (tar) and emulsion Specification : Par t 3 Emulsion

Further, it was decided to withdraw the standards IS 2093 and IS 4198.

Distributors and spr ayers for tar, bit umen a nd bitumen emulsion are key items of equipment inthe pavement construction work, such as grouting, surface dressing and tack coats. The essentialfunction of mechanical sprayers is to apply the binder evenly to a sprayer in accurately measured

quantities and to continue to do so during the application of entire load irrespective of change ofgradient and direction. Very accurate and even distribution of emulsion may not be possible withhand-sprayers , although reasonably uniform resul ts may be obtained with such sprayers by propercontrol and supervision. This standard covering hand-sprayers and mechanical sprayers forbi tumen emulsion has been prepared with a view to assi st ing th e users in obtaining sp raye rscapable of distributing emulsions uniformly to the specified standard and having satisfactorymechanical efficiency.

This standard includes a number of requirements which are at the option of the purchaser. For thesake of convenience to the purchaser and the supplier, requirements to be specified by thepu rchas er while mak ing an enquiry or placing an order for emulsion sp rayer s have also been listedin Annex A.

In the formulation of this s tandard due weightage has been given to Interna tional Standar ds and

practices prevai ling in different countr ies and also practices in th is field in our country. Thisstandard has taken considerable assistance from BS : 3136-1959 'Emulsion spraying machines forroads', issued by the British Standards Institution.

This edition 1.1 incorporates Amendment No. 1 (March 2000). Side bar indicates modification ofthe text as t he result of incorporation of the amendmen t.

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 be roundedoff in accordance with IS 2 : 1960 'Rules for rounding off numeri cal values ( revised)'. The numberof significant places retained in the rounded off value should be the same as th at of the specifiedvalue in this standard.


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IS 2094 (Part 3) : 1999

6.1.3 The ta nk shall have a dipstick clearlymarked with the serial number of the tank towhich it prolongs. The dipstick shall fit into aguide or be positively located by other means,and shall be calibrated and clearly marked to

show the contents of the tank at any level withan accuracy of 1 percent of the nominalcapacity.

6.1.4When a p ressure t ank is employed, t hisshall comply with the relevant safetyregulations for pressure vessels.

6.1.6A barrel hoist shall be fitted whenrequired by the purchaser.

7 COMPLIANCE WITH INDIANSTANDARDS

All materials used in the construction of

sprayers shall comply with appropriate IndianStandards. Pipe unions and screw thread shallcomply with the requirements of IS 554.

8 ROADWORTHINESS

8.1 Transportable sprayers may be fitted withiron rubber or pneumatic tyres and the fourwheels shall be run on plain bearings. Anefficient hand operated parking brake shall beprovided.

8.2 All sprayers shall comply with the relevantroad traffic regulations.

9 MARKING

9.1 Each sprayer shall have firmly attached toit a plate bearing the following particulars:

a) Manufacturer's name or trade-mark,

b) Nominal capacity of the ta nk,

c) Tank serial number, and

d) Year of manufac ture.

9.2 BIS Certification Marking

The product may also be marked with theStandard Mark.

9.2.1The use of the Standard Mark is governedby the provisions of Bureau of IndianStandards Act, 1986 and the Rules andRegulations made thereunder. The details ofconditions under which a licence for the use ofStandard Mark may be granted tomanufacturers or producers may be obtainedform the Bureau of Indian Standards.

SECTION 2 ADDITIONAL REQUIREMENTSFOR SPRAYING EMULSION

10 PUMPING SYSTEM

10.1 Following two types of pumping systemmay be used:

a) Hand operated piston pumps or gearedpumps , and

b) Power driven pumps diesel engines asprimemover.

10.2Pumping system shall be capable of givingminimum output 0.3 kg/10 m2 and maximumoutput 1 kg/10 m

2.

10.8The p ump , if fitted, shall be of a typewhich does not cause breakdown of theemulsion by excessive shearing betweenmoving parts with small clearance. The

pumping system shal l be so designed that t he reare no visible pulsations at the spray nozzles.

10.4 To assist in clearing the system, provisionshall be made either for pumping air throughthe nozzle pipe or for admitting air to it at thepump end. An addi tional device for draw ing inthe emulsion left over in the spray-bar may alsobe provided, if required by th e purchase r.

11 STRAINER

A strainer, in which the maximum dimension ofany aperture is not more than half theminim um dimensions of the smallest ape rtu reor passage in the nozzle, shall be provided inthe pipe system between the tank and thenozzle. The strainer shall be easily removablefor cleaning.

12 FLEXIBLE PIPE AND SPRAY PIPE

The flexible pipe and spray pipe shall be not

less than 12 mm bore. The flexible pipe shall benot less than 3 m long and shall be made of amaterial that will resist deterioration from thesolvents used for cleaning. The pipe and itsunion shall be capable of withstanding fourtimes the maximum pressure that can bedeveloped in the system.

13 SPRAY LANCE

The spray lance shall be fitted with a shut-offvalve between the pump and the spray nozzleand with a suitable handle to facilitate

manipulation.

14 SPRAY NOZZLE

The spray nozzle shall be of a type whichdelivers the emulsion or bitumen in fine sprayof well-defined shape.

15 PRESSURE GAUGE

When a pressure tank is incorporated in themachine a suitable gauge reading to at leastdouble the normal working pressure, shall befitted.

16 TEST FOR UNIFORM DISTRIBUTIONOF EMULSION

16.1 When tested by a method which complieswith the general requirements described in

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IS 2094 (Part 3) : 1999

Annex B, the amount of binder collected on anystrip of surface 5 cm wide within the effectivewidth, the length of the strip being parallel tothe direction of travel of the sprayer, shall notdiffer from the average amount over theeffective width by more than 15 percent.

Further, the mean of the amount of emulsioncollected in any group of four adjacent traysshall not vary by more than 10 percent from themeans within the effective spraying width.

16.2 For the purpose of calculating the averageamount collected, the effective width shall be

the whole sprayed width less 15 cm at each side.

16.3The amount of emulsion received on the15 cm margin at e ither side of the effectivewidth of the spray shall be neither less than50 percent nor more th an 100 percent of the

mean amount per 15 cm of the effective widthsprayed.

17 INSTRUCTION

Instructions shall be supplied with eachsprayer to enable the operator to ensure thatthe specified rate of spread is obtained.

ANNEX A

(Foreword)

INFORMATION TO BE SUPPLIED WITH AN ENQUIRY OR ORDER

A-1 Information with regard to the followingrequirements which are at the option of thepu rchase r shall be suppl ied to themanufacturer while making an enquiry orplacing an order for sprayers for emulsion:

a) Type (see 3.1), also stating whether itshould be mobile or transportable;

b) Nominal capacity (see4.1);

c) Whether a barrel hoist is required (see5.1.5 );and

d) Whether a device for drawing in emulsionleft over in the spray-bar is required(see 9.4).

ANNEX B(Clause 16.1)

TEST FOR UNIFORMITY OF TRANSVERSE DISTRIBUTION OFEMULSION (DEPOT TRAY TEST)

B-1 GENERAL

B-1.1 This annex lays down the method fortesting uniformity of distribution of emulsionacross the surface being sprayed. Various

methods for determining the transverseuniformity of distribution have been developedthe essentiad requirements of which are thefollowing:

a) The conditions prevailing during the testare comparable with those, occurringduring normal operations as regards:

1) tempera ture of emulsion,

2) viscosity of emulsion,

3) height of th e nozzle orifice above thetest surface,

4) pressure in the distribution system, and

5) speed of operat ion of mechanicaldistributing gear when applicable.

b)The te st surface is divided into st rips ofequal width, usually 5 cm; the length ofthe strips being parallel to the direction oftravel of the sprayer.

c) The test is so arranged th at the sprayercan operate for a sufficient period toobtain the normal working conditions, andwhen this has been achieved, the testsurface is exposed to the discharge forsuitable period.

d) The amount of emulsion delivered on each5 cm strip is then measured and theresults expressed as a percentagedeviation from the mean for all the 5 cmunits over the effective width. Theeffective width is defined as the sprayed

width less 15 cm margin at each side.e) The results of the test are recorded in the

form indicated in Fig. 1. A suitable recordcard is shown in Fig. 2.

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IS 2094 (Part 3) : 1999

NOTET

heemulsionfallingonwidthsAa

nd

Bi

signoredincalculatingthemeandistribu

tion

FIG.1

TYPICALRESULTSOFTESTFORUNIFORM

ITYOFTRANSVERSEDISTRIBUTIONOFEMULSION

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IS 2094 (Part 3) : 1999

CON.TAINER

NO

1

2

34

56

7

8

910

11

1213

14

151617

18

19

20

21

2223

24

25

2627

2829

3031

32

33

34

35

3637

38

39

40

4142

43

44

4546

47

48

49

5 0

DIP

mm

DEVIATIONFROM MEAN

mm mm

TOTAL

MEAN

EFFECTIVE WIDTH

LITRES/MINUTE

DATE OF TEST

EMULSION

SPRAY TEMPERATURE

PRESSURE

SPRAY HEIGHT

DURATION OF TESTSIGNATURE ETC

FIG. 2 RECORD CARD FOR TEST FOR TRANSVERSE DISTRIBUTION OF EMULSION

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IS 2004 (Part 3) : 1999

B-1.2Spraying machines are tested with thosegrades of emulsion for which they are to beused.

B-2 DEPOT TRAY TEST

B-2.1The apparatus consists of a wheeledtrolley carrying a set of removable containers.Each container is 5 cm wide, 0.9 m long and15 cm deep, made of 0.900 mm thick mild steelsheet, and of approximately 7 litres capacity.The containers extend to a width 15 cm greaterthan the full spray width of the sprayer,therebeing six containers in 30 cm of spraywidth. The rim of each container is lipped onone side in order that the containers willoverlap and prevent binder from escaping.Before each test, the containers are examined

for damage likely to affect results and arereplaced, if necessary.

B-2.2The trolley runs on steel rails fastened tothe top of 1 350 litre catch tank (2.9 + 0.9 +0.6 m) the rails being horizontal and parallel tothe sides of the tank and sufficiently long toallow the trolley to lie clear of the spray beforethe test. The top rim of each container, whenfitted on the trolley, is parallel to the rails andthe same distance below the nozzles ordistributing gear as of the road surface undernormal working conditions.

B-2.3The sprayer is backed into position withthe spray-bar over the catch tank, precaution

being taken to see the spray-bar is horizontaland at right angles to the rails. The trolley andcontainers rest on the rails clear of the sprayhood. A short preliminary spray is made toensure that all nozzles are functioning and thesprayer is otherwise in normal workingcondition.

B-2.4The trolley and containers are thenpushed underneath the sprayer and spraying iscommenced, and maintained for a period oftime sufficient almost to fill the containers. Thetrolley is then withdrawn to the previous

position.

B-2.5The depth of binder in each container ismeasured by dipping with a steel rulegraduated in millimetres. Each container isdipped in the same position, a convenient place

being about 30 cm from one end. Dipping is tocommence when the froth has settled.

B-2.5.1 If dips can be read with the ruler inposition, the ruler is wetted with paraffin togive a flat meniscus, alternatively, if the rulerhas to be withdrawn in order to read off the tip,it is dampened with soft soap solution to ensurea clear line of demarcation.

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Bureau of Indian Standards

BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promoteHarmonious development of the activities of standardization, marking and quality certification of goods andattending to connected matters in the country.

Copyright

BIS has the copyright of all its publications. No part of these publications may be reproduced in any form

without the prior permission in writing of BIS. This does not preclude the free use, in the course ofimplementing the standard, of necessary details, such as symbols and sizes, type or grade designations.Enquiries relating to copyright be addressed to the Director (Publications), BIS.

Review of Indian Standards

Amendments are issued to standards as the need arises on the basis of comments. Standards are alsoreviewed periodically; a standard along with amendments is reaffirmed when such review indicates that nochanges are needed; if the review indicates that changes are needed, it is taken up for revision. Users ofIndian Standards should ascertain that they are in possession of the latest amendments or edition byreferring to the latest issue of 'BIS Catalogue' and 'Standards : Monthly Additions'.

This Indian Standard has been developed from Doc : No. HMD 18 (0195).

Amendments Issued Since Publication

Amend No. Date of Issue

Amd.No.1 March 2000

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Is.2094.3.1999-Part3-Heater for Bitumen (Tar)