durakol g hm
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8/12/2019 Durakol G HM
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a.b.e. is an ISO 9001 : 2000 Registered Company.
a.b.e. Construction Chemicals Limited P.O. Box 23053, Isipingo, 4110 7 Wilcox Road, Is ipingo, 4133 Tel. (031) 913 5400
TECHN ICAL DATA SHEET
Elastomeric joint sealant SABS 110:1973
DESCRIPTION
durakol G LM is a gun grade two-component manganese cured mediummodulus polysulphide sealantcomplying to SABS 110:1973.
USES
durakol G HM is a sealant used forsealing expansion joints, stress relief
joints and movement joints in buildingand other civil engineering structures,These include superstructures,reservoirs and potable water retainingstructures, floors, basements andsubways.NOTE:
For sewerage treatment and wastewater structures use flexothane G.
FEATURES & BENEFITS
The product is suitable for use inpotable water.
Forms a tough, elastic, rubber-likeseal.
Accommodates continuous andpronounced cyclic movement in allplanes.
Excellent adhesion to most commonconstruction materials.
High resistance to ageing and goodresistance to extreme climaticchanges.
Specific primers for porous and non-porous surfaces ensure excellentadhesion.
APPLICATION INSTRUCTIONSJOINT PREPARATION
Thorough preparation of joints isessential if a satisfactory seal is to beobtained. For concrete, stone ormasonry substrates, all traces of dust,laitance, mould oil, any previoussealant and all other foreign materialmust be removed by mechanicalgrinding, followed by blowing out withdry oil-free compressed air. Allsubstrates must be completely dry.
Suitable back-up material, such asduracordor durasheetmust be usedto adjust sealant depth in the joint tocomply with correct joint geometry.
TYPICAL PHYSICAL PROPERTIES
Form
Two-componentcompound. Base and
curing agent haspaste consistency
Colour Grey
M.A.F.25% butt joints,50% lap joints
Physical orchemical change
Chemical cure
Applicationtemperature
+5 to +35 C
Hardness shore A Gun grade: 20-25
Pot life 2-8 hrs @ 25 C
Setting time72 hours @ 5 C36 hours @ 15 C18 hours @ 25 C
Cure time 8 weeks at 5 C4 weeks at15 C2 weeks at25 C
Water immersion
durakol G HM mustbe fully cured beforepermanent immersionin water
Chemicalresistance tooccasional spillage
dilute acids, dilutealkalis, petrol, aviationfuels, diesel,kerosene, lubricationoils, skydrol, whitespirit
Not resistant toChlorinated solventsand oxidizing acids
Biologicalresistance
durakol G HMHasbeen evaluated inmicrobiologicallyactive situations andhas been shown tohave resistance toaerobic conditions
Solids content 100%
Density 1,74 kg/litre
Flash points > 65 C
FlammabilityBurns but does notreadily supportcombustion
duracord is a self releasing material,but if soft-board is used as the jointfiller, a plastic strip bondbreaker mustbe placed on the filler surface beforesealant is applied. The use of bondbreaking tape is not required inexpansion joints where duracord ordurasheet, cellular polyethylene fillersare used except where a tear off stripis employed on the durasheet. In thisinstance, it is recommended that atape be placed over the cut edge ofthe durasheet to prevent amechanical bond occuring.
Where the sealant is subject to ahydrostatic head then a 100-200kg/mdensity durasheetmust be used.
Any expansion joint filler must bechecked to ensure it is tightly packedand no gaps or voids exist at the baseof the sealing slot before positioning abond breaker.
PRIMING OF JOINTS
Porous surfaces must be fully primed
the sides of the joint face, allowing thesolvent to evaporate. The surfaceshould be touch dry between 30minutes and 2 hours dependant ontemperature and humidity.
the joint during this time windowotherwise another coat of primer mustbe applied.
Note:The use of a bond breaker is not
required in expansion joints containingduracord or durasheet cellularpolyethylene expansion joint fillers. Forconstruction or contraction joints abond breaker tape or duracordshouldbe used. Where hydrostatic pressureexists, only bond breaking tapes mustbe used, not foamed back-up strips.
PRIMINGPorous surfaces must be fully primedwith epidermix 326 (twin-pack epoxy
durakol HM
with epidermix 326brushed well into
durakol G HMmust be introduced into
65002 Rev: 01-05-08
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8/12/2019 Durakol G HM
2/3
a.b.e. is an ISO 9001 : 2000 Registered Company.
a.b.e. Construction Chemicals Limited P.O. Box 23053, Isipingo, 4110 7 Wilcox Road, Is ipingo, 4133 Tel. (031) 913 5400
TECHN ICAL DATA SHEET
primer) for brush application toconcrete, stone, brickwork, timber andunglazed edges of ceramic tiles. Brushwell into the faces of the joint, toensure complete coverage. Avoid
over-priming resulting in an excess ofprimer in the base of the joint orapplication beyond faces. The primerfilm should be allowed to lose itssolvent (approximately 30 minutesdrying) before sealant is applied.Primer open time is 4 hours.If however, the primer is allowed to drylonger than 6 hours, then the surfacemust be re-ground and re-primed.Non-porous surfaces must be primedwith epidermix 391.For use on glass and ceramics whichare to be permanently immersed inwater. It is a one part chemicallyactive, clear liquid for brush or pad
application. One thin coat should beapplied and allowed to dry for 30 to 60minutes prior to sealant application.Iron and steel must be protected withan anti-corrosion primer prior tosealing.For estimating purposes allowapproximately 250 ml primer per 6 litresealant.
PROTECTION OF ADJACENTSURFACES
Masking tape applied to areasadjacent to joint will protect them fromsmearing and enable the joints to be
finished to a neat line. The tape shouldbe applied after the joint has beenprepared, prior to any priming orsealing operation and removed after allfinishing and tooling operations havebeen completed, but before thesealant has cured.
MIXING
durakol G HM is supplied in a singlecontainer. A cellophane sheet coversthe polysulphide (base). On top of thecellophane is the plastic container ofactivator paste.To prepare the material for use,
remove the activator and cellophanesheet. Remove any base adhering tothe cellophane and replace the base inthe container.Remove the entire activator paste fromits container and add to the base.Mix the material thoroughly, preferablywith a slow speed drill (not in excess of250 r/min) fitted with a suitable paddle,until an even colour, free from streaks,is obtained.
Periodically scrape the sides and baseof the container with a spatula or smalltrowel to ensure complete blending ofcomponents. To obtain a complete mixwill take FIVE TO TEN MINUTES of
mechanical mixing.If hand mixing is to be carried out, aminimum period of 15 minutes ofvigorous mixing is required.Caution: If material is not mixedthoroughly, its performances will beimpaired.
JOINT GEOMETRY
durakol G HMmay be applied to jointsbetween 6 and 50 mm wide. The widthof the joint should be four times that ofthe calculated joint movement. Jointsthat are expected to experiencenormal cyclic movements should be
designed to an optimum width to depthratio of 2:1, subject to the overridingrecommended minimum sealant depthof:
6 mm for metals, glass and othernon-porous surfaces;
10 mm for all porous surfaces;
20 mm for trafficable joints andthose subject to hydrostaticpressures.
Joints expected to with standhydrostatic or shear forces must havea width to depth ratio of 1:1.
APPLICATION
Application to primed surfaces can beby hand or pressure-operated gun orby trowel or by pouring, according tothe cross-section of the joint to befilled. It is essential to ensure completecontact between the sealant and the
joint surfaces.Tooling of sealant is necessary forcomplete air-free filling of voids and toassist in making contact by wetting thesurfaces to which the sealant isapplied.The surfaces of the joint should besmoothed with a clean knife or spatula.
A minimum of surface lubricant suchas dilute detergent solution may be
used to assist the process. Anymasking tape should be removedimmediately after tooling.
CLEANING
All equipment should be cleanedimmediately after use, and before thematerial has set, with abe superbrush cleaner followed by washingwith soap and water.
PROTECTION ON COMPLETION
The finished sealant should beprotected from traffic until the sealanthas fully cured. Over-painting of
sealant is not recommended becauseof the inability of paint films to acceptmovement. However, if definitelyrequired, trials should be carried out todetermine compatibility.
LIMITATIONS
durakol G HM should not be used indirect contact with materials containingpitch or bitumen.
MODEL SPECIFICATION
The sealant shall be durakol G HM, a
two component, high moduluspolysulphide sealant applied inaccordance with the manufacturersrecommendations, abe ConstructionChemicals including the use ofepidermix 391 and epidermix 326primers where required. The sealantshall comply with the requirements ofSABS 110, 1973.
PACKAGING
durakol G HMis supplied in 2 litre tinsin cartons of six.
HANDLING & STORAGE
This product has a shelf life of12 months if kept in a dry cool place inthe original packaging. Note thathigher temperatures may shorten theshelf life of the product.
HEALTH & SAFETY
durakol G HM is toxic. Alwaysventilate the working area well duringapplication and drying. Avoid flames invicinity.
Always wear gloves when working withthe material and avoid excessiveinhalation and skin contact.
If material is splashed in the eye, washwith copious quantities of clean waterand seek medical attention.
Cured durakol G HM is inert andharmless.
65002 Rev: 01-05-08
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8/12/2019 Durakol G HM
3/3
a.b.e. is an ISO 9001 : 2000 Registered Company.
a.b.e. Construction Chemicals Limited P.O. Box 23053, Isipingo, 4110 7 Wilcox Road, Is ipingo, 4133 Tel. (031) 913 5400
TECHN ICAL DATA SHEET
IMPORTANT NOTE
This data sheet is issued as a guide tothe use of the product(s) concerned.Whilst abe Construction Chemicalsendeavours to ensure that any advice,recommendation, specification orinformation is accurate and correct, thecompany cannot - because abehas nodirect or continuous control over whereand how abe products are applied -
accept any liability either directly orindirectly arising from the use of abeproducts, whether or not in accordancewith any advice, specification,recommendation, or information given
by the company.
FURTHER INFORMATION
Where other products are to be usedin conjunction with this material, the
relevant technical data sheets shouldbe consulted to determine totalrequirements. abe ConstructionChemicals has a wealth of technicaland practical experience built up over
years in the companys pursuit ofexcellence in building and constructiontechnology.
COVERAGE AND GUIDE TO QUANTITIES
Joint size
in mm
Litres per
Metre run
Metre run per
2-litre pack
Metre run per
5-litre pack
5 x 5 0,025 80,00 200,00
5 x 10 0,050 40,00 100,00
10 x 5 0,050 40,00 100,00
10 x 10 0,100 20,00 50,00
15 x 10 0,150 13,00 32,50
20 x 10 0,200 10,00 25,00
20 x 15 0,300 6,70 16,50
20 x 20 0,400 5,00 12,50
25 x 13 0,300 6,20 15,50
40 x 20 0,800 2,50 6,25
50 x 25 1,250 1,60 4,00
500 ml ofepidermix 326 to 12 litres of durakol G HM(approximate)500 ml of epidermix 391to 20 litres of durakol G HM. (approximate)
These are theoretical yields, no allowance has been made for variation in joint width or wastage,
65002 Rev: 01-05-08
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