Environment friendly protective and Decorative coating for interiors and Exteriors
THE BASIS OF ECO FRIENDLY PAINTS
Natural ingredients are at the heart of the unique qualities of FAIRCOAT E-GREEN. The binder is liquid silicate whose structural form and hardness is perfectly compatible with its inorganic colorants and the inorganic concrete and masonry structures it is applied to.
The principle strength of silicate paints is their penetration within the substrate. This results in a solid mineral and insoluble compound of paint and substrate (concrete, natural stone, marble, etc). The cross-section through the render shows this penetration, which is also known as silification. This chemical bond locks the paints into the subsurface as opposed to organic coatings that sit on the surface.
FACTORS AFFECTING PENETRATION DEPTH
While penetration depth may not be critical for many architectural applications, greater penetration will have a significant effect on strength and durability of applications on cement based substrates, porous stone and traffic bearing surfaces. Penetration depth is influenced by the substrate’s pore structure and permeability, moisture content and surface preparation.
When FAIRCOAT E-GREEN is applied to suitable substrates, it penetrates and reacts to form a hard, insoluble silicate. It can also increase substrate hardness, particularly in cementitious materials. When applied to materials containing Portland cement, the silicate reacts with incompletely hydrated cement particles, converting unreacted calcium hydroxide (CaOH2 or hydrated lime) to harder calcium silicate hydrates.
WATER VAPOUR PERMEABILITY
The high water vapour permeability of silicate paints is due to their crystalline nature which ensures that humidity present in the masonry can freely pass from the substrate. Thus water cannot build up between the paint and the substrate – which normally leads to paint cracking/ blistering and being pushed off the surface. Instead, the substrate remains dry and the breathability of the building is maintained.
FAIRCOAT E-GREEN do not burn, unlike emulsion and other organic based paints. In the event of a fire breaking out, damage to the substrate is reduced and the paint does not give off any toxic fumes.
NO FUNGUS, ALGAE OR MOLD
The pure inorganic inert composition and high pH of silicate paints prevents any fungi, algae or mold growth, thus assuring a hygenic and clean paint layer. The absence of surface condensation due to the coatings high water vapor permeability, promotes a clean, healthy environment. Traditional organic paints provide smooth film coatings that do not breathe, attract moisture and fungi, algae and mold spores. Toxic mold growth is the number one health problem in building structures today. FAIRCOAT E-GREEN can improve the health of the building environment.
REGULATION OF TEMPERATURE
Silicate paints have a micro-crystalline structure, which reflects lightand heat. In hot climates this reflective property reduces the thermalstress on the structure and reduces the amount of cracking the substratewould normally undergo.
Neither harsh climates nor high UV radiation can alter the color of a FAIRCOAT E-GREEN Redecoration in the same color shade is possible after many years. Traditional organic paint coatings are subject to UV deterioration from day one, breaking down the paint film which changes the color and causes the coating to fail. Silicate paints have an extremely long life providing important economies over the long term.
This water based Silicate paints are harmless to the environment, consisting of natural mineral compounds including quartz, inorganic mineral colorants and liquid silicate used as a binder. Silicate paints represent a technology which has no detrimental effects on the environment in terms of manufacturing as well as in terms of application. Under fire conditions no toxic fumes evolve as the FAIRCOAT E-GREEN does not ignite.
Thus FAIRCOAT E-GREEN is Breathable, Moisture Resistant, Does not contribute to growth of mold, algae or mildew, Durable and UV Resistant; does not yellow, fade or peel.
SOLVENT FREE ULTRA CHEMICAL RESISTANT VINYL ESTER BASED COATING FOR INDUSTRIAL FLOORS AND STEEL SURFACES
SAFECORE VC is rapid curing, 2 pack Vinyl Ester based coating with outstanding resistance to aggressive acids, solvents and alcohols and other chemicals. This product is designed where high chemical resistance is of primary requirement. Due to its high molecular weight and low permeability, it will withstand exposure to a broad range of acids, caustics, and solvents. SAFECORE VC is designed for coating primary and secondary containment, trenches, troughs, pump pads, equipment, and structural members.
• Excellent resistance to a wide range of chemicals.
• High temperature performance; in many cases up to 350°F (spills) or 400°F (dry heat).
• Excellent adhesion to steel & concrete.
• Vary rapid cure, even at low temperature.
• Hygienic and easily cleaned.
• Tough durable and abrasion resistant.
• Slip resistant options.
• Can be used as an internal lining for concrete or steel storage tanks.
• SAFECORE VC is designed for coating primary and secondary containment, trenches, troughs, pump pads, equipment,
and structural members.
• For chemical resistant floor/wall coating for chemical and printing works, bottling and canning factories, pharmaceutical production etc.
INSTRUCTIONS FOR APPLICATION
Steel – The surface should be free of oil, grease, dirt, mill scale, rust, corrosion products, oxides, paint and other foreign matter. In absence of blast cleaning, prepare the metal surface by wire brushing, sanding. The surface should be pretreated with emery paper or all rust should be removed with SAFECORE RR.
Concrete Surface: Concrete shall be minimum of 21 days old and/or residual moisture content shall be below 6%. Ensure that the concrete is clean and free from dust, laitance oil, curing compound, existing paint finishes etc. Blow holes and defective concrete should be made good using a proprietary void filler FAIRSCREED VF.
The following application procedure should be followed:
PRIMER COAT(SAFECORE VC PRIMER) :
MIXING : SAFECORE VC PRIMER is supplied as ready to use in pre-weighed packs of base and hardener for easy application on site mixing. Pour the hardener into base cane, mix well using paddle attach to an electric drill until uniform colour is produced.
APPLICATION PROCEDURE : SAFECORE VC PRIMER may be applied by brush , roller or airless spray to give continuous coating on prepared surface. After proper surface preparation apply one coat of SAFECORE VC PRIMER and allow it to dry completely.
NOTE ; For technical details refer the Separate Technical Datasheet of SAFECORE VC PRIMER.
SECOND COAT(SAFECORE VC) :
MIXING : SAFECORE VC is supplied as ready to use in pre-weighed packs of base and hardener for easy application on site mixing. Pour the hardener into base cane, mix well by chemical means until uniform color is obtained.
APPLICATION PROCEDURE : When primer dries completely apply one coat of SAFECORE VC . SAFECORE VC may be applied by brush , roller or airless spray to give continuous coating. After application allow it to dry completely. For slip resistant finish broadcast SAFECORE ANTI-SLIP GRAINS immediately after first coat application. After proper curing( at least 10 hrs) brush off excess aggregate and apply Second final coat of SAFECORE VC.
CURING: Allow to cure for minimum of 12 hours @300C for light foot traffic and 24 hours prior to vehicular traffic. Allow a minimum of 3 days cure at 300C for optimum chemical resistance.
CLEANING : Tools and mixers should be cleaned with SAFECORE TOOL CLEANER immediately.
PACKING & COVERAGE : SAFECORE VC is available in 1Kg & 5Kg packing . A 5Kg pack is sufficient to coat 5-6m2 of surface with the 1 coat treatment with DFT of 150-200 microns.
SHELF LIFE & STORAGE: SAFECORE VC will have a shelf life of 3 months in unopened containers when kept in a dry condition at temperature between 50C to 450 C. Storage at higher temperature or high humidity may reduce shelf life.
Two Component Water Dispersible Epoxy Based Acid & Chemical Resistance Tile Grout
FAIRSCREED TG (WB) is a thixotropic, Two Pack Water dispersible Epoxy based tile grout ideal for all type of tile joints. FAIRSCREED TG (WB) is a V.O.C. free product, so it is Eco friendly. Also it provides excellent adhesion even under Damp Condition. Tile gap width of 10 to 50 mm gap can be filled easily with FAIRSCREED TG (WB).
• Excellent resistance to Water, diluted acids & other chemicals
• Excellent adhesion to damp surface and green concrete
• Thixotropic in nature, so suitable for application in both Vertical & Overhead locations.
• V.O.C. Free Product
• Early development of hardness
• Low Odor
• Rapid curing
• Cost Effective and Eco-friendly
• FAIRSCREED TG (WB) is a Water Base Epoxy paste adhesive particularly suitable for all types of Tile Joints.
• FAIRSCREED TG (WB) can also be used for thin section concrete repairs.
Surface Preparation: Substrates (tile joint) should be sound, clean and free from dust, dirt, grease, oils and other contaminants. A roughened or profile surface will ensure optimum adhesion.
Mixing: The Base and Hardener components should be mixed thoroughly using a stiff spatula or slow speed drill with paddle attachment, until a uniform colored mixture is obtained.
Application: The application of FAIRSCREED TG (WB) is best using Spatula, Trowel, Serrated trowel or Stiff bristled brush depending on the gap of joint to be treated.
PACKING AND COVERAGE
FAIRSCREED TG (WB) is supplied in 1Kg & 5Kg Pack. 1 kg of FAIRSCREED TG (WB) covers 13-15 running feet at 5mm x 5mm groove size.
A READY TO USE POLYMER BASED WALL PUTTY
FAIRMATE WALL PLASTER is a polymer based Off- White colored wall putty. It has excellent adhesion on any cement surfaces.
1. Excellent adhesion.
2. Excellent thixotropicness.
3. Excellent bonding & finishing.
4. No curing is required.
5. Excellent consistency hence suitable for application.
6. Can be used in Interiors.
8. Easy to apply.
9. By using FAIRMATE WALL PLASTER less coats of FAIRCOAT of certain color needed to apply. Almost replaces the
application of Primer Coat.
10. It has an excellent coverage of 11 Sq. Ft. per kg of the product.
1. FAIRMATE WALL PLASTER is suitable for use on both precast and conventional building areas on new internal
surfaces of precast concrete, sand cement plaster etc.
2. Can be used as putty before applying FAIRCOAT of related color. E.g. Off White
3. Can be used in Interiors and Exteriors.
Surface Preparation :
The surface for the application should be absolutely dry. There should be at least 10 days gap before FAIRMATE WALL PLASTER is applied for newly plastered surfaces. Remove all loose material and wipe off the powder with cotton cloth.
Apply FAIRMATE WALL PLASTER with painter’s putty knife or mason’s steel trowel on the surface. Allow to dry it completely and rub the surface with emery paper No. 320. The loose powder on surface should be wiped off with cotton waste.
PROTECTIVE, DECORATIVE, ANTI-CARBONATION COATING FOR EXTERIOR / INTERIOR SURFACES
FAIRCOAT is ready to use aliphatic elastomeric based coating containing special polymers and fillers. FAIRCOAT provides extremely tough protective decorative coating that allows surface to breathe. FAIRCOAT has been specially designed for the decoration and protection of concrete against attack from atmospheric carbon dioxide, airborne chlorides, acid rain, weathering etc. FAIRCOAT is non-flammable and hence can be used in interiors also. FAIRCOAT has excellent adhesion to the substrate and cures to form a flexible film that allows the surface to breath and acts as carbon dioxide barrier thus protecting the concrete in aggressive weather conditions. It has excellent gap bridging ability and does not age with time, and forms an extremely durable film.
• Anti-carbonation properties
• Good weathering properties (Anti algal and anti-fungal)
• Excellent bond with concrete substrate
• Forms flexible film
• Gap bridging properties
• Allows substrate to breath
• Choice of colours
• Single pack, brush applied
• Excellent waterproof coating
• FAIRCOAT provides a smooth decorative durable coating for concrete and masonry surfaces like big commercial buildings, public places, residential building etc.
Longest fly over of India at Hyderabad, P V Narasimha Rao Elevated Expressway protected with FAIRCOAT- Anti carbonation coating.
Eastern Freeway Flyover, Mumbai (17 km signal free freeway) is the 2nd largest flyover in the country protected with FAIRCOAT- Anti carbonation coating.
SEGMENTAL CONCRETE BRIDGE BONDING
FAIRMATE supplied the concrete admixtures and other products for the precast and insitu concrete works on this structure, and now we develop a high strength epoxy resin adhesive system, to bond the joints between the precast concrete segments.
The Successful combination of new pre-stressing systems with new assembly equipment led to the development of the precast segmental construction method for bridges. The most important first developments were probably in 1940s, and it is now used by many of engineers, contractors, equipment producers and manufacturers around the world. It has become established and used successfully on numerous large projects, including many of the world’s most important recent bridge structures.
FAIRBOND CS PRODUCTS – SEGMENTAL BRIDGE BONDING
FAIRBOND CS (S) & FAIRBOND CS (W) has been used extensively for a segmental bridge bonding construction applications, the need became clear for a specific range of segmental bridge adhesive which could meet the different and increasingly precise requirements of bridge designs and at the different working temperatures which occur during their construction periods. These included application in daytime temperatures of up to 45°C, curing during very low and cold night time temperatures, plus the rapid erection cycles demanded for the precast segments.
The FAIRBOND CS (S) & FAIRBOND CS (W) were the result – a range of adhesives, optimized for the specific technical requirements, suitable for use on the most challenging bridge projects. This is based on a reactive hardening epoxy binder system, with optimized filler granulometries, so that the products support the continuously optimized production process of segmental bridge construction.
The Fairbond CS (S) & Fairbond CS (W) (segmental bridge adhesive) range, which fully complies with FIP and AASTHO standards, but also to be able to meet the specific requirements of each construction site.
The application and characteristics of segmental bridge bonding products must be carefully matched so that the adhesive can meet the following requirements:
• To bond the surfaces so that compressive and shear forces also the tensile forces can be safely convey from to every bridge segment.
• To lubricate the joint faces between the segments to make them easier to finally position together during their installation.
• To seal the joints between the segments against future ingress of water and de-icing salts etc,i.e. to protect the prestressing cables against corrosion.
THE PERFORMANCE REQUIREMENTS
In order to meet all these requirements under the different site application conditions, including variable temperatures/ moisture contents/ mixing and application methods etc., the epoxy adhesive must have carefully selected precisely defined characteristics and test methods to confirm these.
The table below contains the main criteria covered by “International Federation of Prestressing” FIP (now developed as fib “Federation international de beton) and AASTHO (American Association Of State Highway and Transportation Officials), which have also shown the FAIRBOND CS products specification.
EPOXY JOINTING ADHESIVE
Purposes of Epoxy
The purposes of using an epoxy resin in the joint between the segments are:
• To maintain the structural integrity of the joint and maintain a monolithic concrete segment
• To completely fill any minor surface imperfections and irregularities between the match cast surfaces
• To provide a water and grout tight seal, preventing chloride intrusion
• To act as a lubricant when erecting the segment
• To ensure tight fit between the segments so that the compressive and shear stresses are transmitted directly across the joint
TYPES AND APPLICATION OF EPOXY
Epoxy comes in two part compounds consisting of a resin and hardener. When mixed together, they begin curing which can take anywhere from a few minute to a few hours, depending on the formulation, the site and storage temperature and the mass of the epoxy, The cure time will be shorter when epoxies are mixed in higher temperature conditions and in larger masses.
Segmental bridge epoxies are specially formulated as either normal or slow setting resins. For Segment by segment erection, the normal set epoxies are used and for span by span erection, the slow set epoxies are used. It is important to use the correct pot life and correct temperature range to ensure good working time and proper strength gain of the epoxy.
Concrete should be mechanically sound and free form contamination such free water, mould oil, grease, laitance or dust. A dry grit blasting on the surface is recommended for optimum adhesion. Sections to be checked for good alignment. A ‘dry run’ before the first application of the adhesive is recommended to ensure correct timing.
The contents of hardener should be added in to the base and mixed for 2-3 minutes with a paddle attached slow speed heavy duty drill. It should be ensured that the sides and base of the can is thoroughly scrapped down. A uniform grey colour should be obtained after homogenous mixing.
The mixed adhesive should be applied at required thickness to both laying surfaces with a serrate trowel or other suitable spreader. The joint should be closed immediately. If this is not achieved the surface of the adhesive should be slightly scratched immediately prior to closing the joint to be exposed fresh adhesive. The joint must be closed within the open time of the adhesive. On site monitoring of the operation using lapped asbestos cement panels is recommended.
When the segments are brought together and stressed, excess epoxy is squeezed out. For joints over traffic or water, procedures must be implemented to avoid dropping below. Once the segments has been joined and stressed, all excess epoxy should be cleaned. If leaving it to harden will make it more difficult to remove later on.
Tools and equipment should be using SAFECORE TOOL CLEANER immediate after use.
SHELF LIFE AND STORAGE
FAIRBOND CS (W) & FAIRBOND CS (S) will have a shelf life of 12 months in un-opened containers when kept in dry conditions at a temperature 5 0c to 30 0c. Storage at higher temperature or high humidity may reduce the shelf life.
HEALTH AND SAFETY
FAIRBOND CS (W) & FAIRBOND CS (S) is non-flammable. However, it should not come in contact with skin and eyes. If accidental skin contact occurs, remove immediately by washing with soap and water – Do not use solvent. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Avoid inhalation of vapors and ensure adequate ventilation. Wear suitable protective clothing, gloves and eye/face protection. Barrier creams provide additional skin protection. If swallowed seek medical attention immediately. Do not induce vomiting. For further information see SAFECORE Safety Data sheet.
Fairmate manufactures entire range of construction chemicals under compliance of ISO 9001, ISO (EMS) 14001 & OHSAS 18001 (Occupational Health and Safety) certified by ISOQAR / UK.
While new advances and changes will take place but one thing will never change is quality and meeting special needs of our customers. Our laboratory in Baroda and technical personnel & experts are available to provide additional information and technical assistance. We are eager to work with you in development of new product and resolve your problem.
INTEGRAL WATERPROOFING ADDITIVE FOR CONCRETE AND PLASTER
Water leakage and seepage is the enemy of all structures. It is important to build correctly with due attention to water proofing of basements, exterior walls, roofs and building watertight pipelines. Large numbers of structures lack proper implementation and thereby have less life. If water enters and starts damaging any part of the structure, early repair action must be taken. For excessive damaged structure restoration may be possible by use of repair chemicals after ensuring structural safety.
We realize there is a need to provide building professionals with suitable specialized information to enable them to ensure higher life of all structures. FAIRMATE CHEMICALS PVT. LTD. is a step in that direction. In the developed countries, use of Construction Chemicals is quite extensive. India has to catch up with high growth rates in this field.
Leakage is a common problem in any home or structure, caused either by the age of the structure, or improper
construction and design methods. Some of the most common reasons for water leakage in structures are elaborated below:
• Untrained man power
• Improper preparation of mortar and concrete mixes
• Use of excess water for to make mixes easily workable, which results in porous concrete, inviting leakage.
• Bleeding & segregation in concrete resulting in honey combing/voids
• Inappropriate compaction/vibration of concrete
• Inadequate curing in early and later stages
• Negligence in site supervision.
2.Inappropriate Material Selection
Enough care is not taken in specifying the correct construction materials such as :
• Right quality & grade of cement depending on service requirements
• Good quality crushed aggregates of various sizes depending on mix proportion
• Sand free from silt and other chemicals
• Potable water, i.e. water should not contain any chlorides, etc.
• Other chemical and mineral additives that can increase the durability of construction
3.Aggressive Climatic Conditions
Environment plays an important role in determining the durability of any structure. More aggressive the climate, more stringent is the precautions to be taken. Structures which are exposed to marine regions or situated in polluting industrial belts, are more prone to chemical attack.
Concrete structures are not often used only for the purpose they have been designed, but subjected to forces such as excessive loading, impact, abrasion and other mechanical damages. As a result, structural cracks develop in slabs. These too contribute to the problem.
Problems like cracks, dampness, etc. are neglected in the initial stages and timely corrective measures are not undertaken, ultimately leading to deterioration of the structure. It is advisable to undertake preventive maintenance and carry out timely repairs through a competent contractor, the correct specification for materials and methods, depending upon the problem.
Diagnosing the root cause of the problem is vital. Only then a suitable solution can be arrived.
The treatment will then be cost effective from the long term point of view. Repair or maintenance must be done
systematically as under:
Non destructive testing as advised by a consultant or an expert, if required Once the diagnosis is done, a proper scheme can be made to undertake repair and rehabilitation work using suitable materials aided by construction chemicals.
• Ensures perfect watertight structure
• Reduces water penetration
• Reduces mortar dropping , when used in plaster.
• Reduces CO2 attack.
• Contains no flammable ingredients and is non corrosive.
• Very low cost
• Increase plasticity of concrete, thus it flows easily without increase in water and better compaction is achieved.
• Does not affecting the setting time of the concrete and mortar.
• Becomes an integral part of the concrete.
• Reduces efflorescence.
FAIRCRETE RMW is an integral, high performance waterproofing additive is based on high performance polymers, which reduces the permeability throughout the depth of concrete. It confirms to IS 2645 – 2003. FAIRCRETE RMW is approved by Bureau of Indian Standard vide ISI registration no.CM/L7648592.
FAIRCRETE RMW is unique liquid waterproofing additive for concrete. It consists of a water based suspension of inorganic waterproofing agents in a solution of various polymers and is added to the concrete during the batching process or in a ready-mix truck with full mixing capabilities. In addition to its water proofing characteristics FAIRCRETE RMW also significantly increases the compressive strength and freeze-thaw resistance of concrete and acts as a super plasticizer.
FAIRCRETE RMW is used to minimize permeability and porosity of concrete and cement sand mortar. Useful product for water retaining structures like terrace, chajjas, water tanks, parapets, bathroom, toilets and industrial structures like reservoirs, cooling tower etc.,
Plaster : FAIRCRETE RMW is ideal for use with all sand and cement mortars where it is required to reduce permeability to a minimum.
Concrete : FAIRCRETE RMW is recommended for all general concrete work where the risk of porosity and permeability must be minimised. Eg. basements, bund walls, tanks, balcony, floor and roof slabs.
The required quantity of FAIRCRETE RMW is measured and poured with the regular pouring of water in case of conventional concreting. Separate dispensing system is required for RMC plants.
FAIRCRETE RMW water mixture shall be added to the concrete or mortar and mixed thoroughly. Mixing shall be continued and further water shall be added until the required workability is obtained. The total amount of water added per mix in the initial batches shall be maintained for the remaining batches.
PACKING & DOSAGE
FAIRCRETE RMW can be added in 150-200ml per bag of cement. Optimum dosage is 150ml/50 kg. cement.
FAIRCRETE RMW is supplied in 150ml, 500ml, 1, 5, 10, 50, 100, 200 ltr. carboys.
A FAST SETTING, GENERAL PURPOSE INSTANT BITUMEN BASED ROAD REPAIR MORTAR
ROADCRETE MACADAM is a single part bitumen based road repair mortar composed of a factory controlled fully graded hard stone material, fine aggregates, formulated bitumen contains and special additives. It is a fast curing, high strength trowel applied mortar designed for instant rapid mortar. Its
rapid set characteristics allow a fast return of the road to traffic. The product is chloride free and can be safely used in contact with reinforcing steel. This material is capable of being applied in wet condition where the temperature ranges from 5 0 C TO 500 C.
• Excellent bond to concrete substrate
• Extremely low permeability provides protection against carbon dioxide and chlorides
• Rapid repair time
• High strength
• Fast setting
• Easy to use
• Cost effective instant road repair mortar
• Open for the traffic for shortage timing
• Can be used for man hole cover
• It will not peel, crumble, dust or crack
• Permanent repair to spelled & damaged concrete
• Freeze thaw durability better than standard concrete
• Minimum labour required.
ROADCRETE MACADAM is conforming to requirement of ASTM D- 1664 and ASTM D-2027 modified as follows.
Flash point 790 c mini.
Sybolt furol viscosity at 600 c 200- 500 sec
Water 0.2% maxi.
Distillate test To 2250 c: None
To 2600 c 0-15%
To 3150 c 15-75%
Residual at 3600 c 73-90%
Penetration at 250 c 150 -300
Ductility at 250 c 100 cm minimum
Solubility in trichloroethylene 99 % minimum
WHERE TO USE:
Permanent reinstatement of opening in carriageways, footways, cycles paths, private drives, reinstatement of pot holes. Remedial repairs around manholes.
LYING: Minimum thickness 15 mm.
CURING: No curing is required.
COVERAGE: The depth & width of pothole, crack, utility cut etc. will greatly influence the coverage rate achieved.
CLEAN UP: All tools should be cleaned immediately after use with a solvent base cleaner such as paint thinner or mineral spirit.
TESTING: FIVE CATEGORIES WERE DEFINED AND RATED AS FOLLOWS.
1. Bleeding: Is the flushing of the asphalt binder to the surface of the patch. IT caused by a combination of traffic loads, insufficient voids in the mix, or too much binder in the mix. Bleeding may cause poor skid resistance. – The use of open (gap) gradation and lower binder content should keep bleeding to a minimum.
2. Dishing: Is the further compaction of the patch under traffic loads. It is the result of material instability and inadequate compaction during the placement of the material. Compatibility is related to workability. Mixes with poor workability is difficult to compact. To determine the amount of dishing, a 1-m metal bar was placed across the patch parallel with the direction of travel. The amount of dishing was measured with a ruler accurate to 1.5 mm in the centre of each quadrant. The ratings were determined from the depth measurements.
3. Debonding: Occurs when the patch material loss its adhesion to the pavement at the bottom and/or sides of the pothole. When debonding occurs, the patch material can be pulled out of the hole by traffic, so the patch fails. It can be determined by disintegration i.e. the cracking cause at the edge of the patch for each quadrant. Missing patch was evaluated as a large scale loss of material. In some cases, these appeared to the cohesion failures rather than adhesion failures as all of the remaining particles were fully coated.
4. Raveling: is the loss of aggregate form the surface of the patch. Raveling is cause by stripping, poor cohesion, excessive fine aggregates and poor aggregates interlock of the patch material.
5. Pushing and shoving: is the vertical or horizontal movement of the patch material in the pothole.
The behavior of the ROADCRETE MACADAM in the above testing is very good.
The workability of the mixture was examined using the pennsylania transportation institute/ strategic highway research program (PTI / SHRP). For the PTI test, the sample is loosely placed in a 102 mm cubical box with a 10 mm hole centered on one side. A soil penetrometer with a round nose adapter 10 mm in diameter is pressed through the hole into the material. The value from the penetrometer is recorded as the workability reading.
The workability of the material was evaluated after they had been stored for 6 months as a measure of their storage ability.
The ROADCRETE MACADAM results of the workability surveys are good.
The evaluated at 7 and 14 days and 1, 3, 8, 9 and 12 months after placement.
PACKING AND COVERAGE:
ROADCRETE MACADAM is supplied 25 kg packs A 25 kg pack yields 12.5 ltr of mortars sufficient for 0.75m2 @ 25 mm thick.