Dubans Construction Chemical

Perma Crackfill : or Concrete Repair Mortar is a specially formulated repair mortar designed to fully meet the requirement of effectively repairing cracks in plasters and in concrete, avoiding the use of costly sealants and putties.

• It is essential that the surface of the concrete to be repaired is sound, clean and uncontaminated.
• Chase the crack and form a neat “V” shaped groove at least 6mm wide on surface.
• Damaged plasters can be cut out in more or less square sides.
• Defective material must be removed carefully using reducing tools, needle guns or sharp tools and chipping hammers.
• Force must not be applied as it will damage the sound material beneath.
• Concrete Repair Mortar or Perma Crackfill is a dry powder when mixed with water it forms a creamy consistency paste which is ready for use in repairing cracks and repairing plasters. Concrete Repair Mortar or Perma Crackfill is reinforced with alkali resistant fibers. perma crackfill is available in grey and off white colour powder.

Primary Uses :

• Perma Crackfill is ideally suited for repairing of superficial plaster cracks as well as structural cracks
• Perma Crack fill can be used for repairing ceiling cracks and plasters with ease because of its viscosity
• Cracks arising due to plasters cracking at junctions of wall and column or brick work and suffix of beam can be effectively sealed
• Cracks at parapet wall junction and roof slabs are also sealed with Perma Crackfill
• The product is suitable for rendering
• As a non-shrink waterproof filler in between RCC and brick/block work

Advantages :

• Perma Crack fill replaces costly sealant and putties. It is non shrink, hence possibility of shrinkage cracks are non existent. It has high tensile strength and good adhesion property. The finish achieved is sufficiently smooth. Good resistance to freeze / thaw cycles, carbonation and attack by chlorides. Conventional curing is not required.

Packing :

• Available in 1 kg, 10 kgs and 25 kgs packs

• The product is a blend of special cements, special additives and selected grades fine aggregates along with alkali resistant glass fibres.
• The product when mixed with water in the proportion of 3.5 Volume of powder to one volume of water results in a workable paste which can be trowelled to a fine finish.

• Start curing after the material has sufficiently hardened for two days and then allow it to dry out slowly (i.e. protect from rapid drying due to wind, sun or excessive heat). Use of Curing Compound is ideal in repairs.

• Perma Crackfill is suitable for all subsequent decorative finishes and painting. The finish obtained by Perma Crackfill is far smoother than conventional plasters.

Perma crackfill Paste is a highly flexible crack filter ideally suited for effectively sealing nogging moving plaster cracks whether internal or external.

Primary Uses :

• Perma Crackfill-Paste ideally suited for repairing cracks in plaster whether internal or external
• Perma Crackfill-Paste is useful in sealing cracks in the sealing and at the junctions of brickwork and columns or beams
• Perma Crackfill-Paste is highly use full in water Proofing Applications Around door and window frames and around bath Tub, wash basin etc.

Packing :

• Perma Crackfill -Paste is Available in 200 Gms 400 Gms, 1 Kg & 15 kg Pakes

• Clean the surface to remove any dust, dirt, spillovers of oil, grease or loose particles.
• Remove the existing POP or the Putty to expose the plaster surface.
• Widen the crack to at least 2mm width and moisten the crack with water.
• If the surface is porous or difficult apply a primer prepared by mixing Crackfill-Paste and water in the proportion of 1 : 1.
• Apply Perma Crackfill-Paste in the crack with a putty blade or spatula effectively making sure that it is totally filled up.
• Tool the surface to obtain an even smooth and unbroken surface.
• Allow it to cure. Upon full cure apply putty or pop whatever was removed before the application of Perma Crackfill-Paste.

Perma Latex - AR is based on acrylic co-polymers, special adhesive and bonding chemicals along with hydrofillic agent. Perma Latex - AR gives a versatile performance in many civil engineering applications. The product is milky white liquid.

Primary Uses :
Perma Latex - AR is a high quality emulsion which enhances the performance of cement mortar and concrete. Some example from its innumerable uses are as follows :

• An excellent product in concrete repairs as in combination with cement (1:1) it produces a very strong primer and as an additive in the mortar to make strong water proof plaster
• In case of multi layered plaster Perma Latex - AR bonding slurry helps in building up layer. The bond coat not only serves as a bonding agent but ales as a water proof barrier
• Perma Latex - AR modified mortar are used in joining prefabricated members and as bedding mortar in precast block work to secure water tight joints
• In terrace waterproofing and patch up repairs Perma Latex AT forms an important member as it helps binding new plaster and ales helps in making non shrink crack free mortar for repairs
• Cement Perma Latex - AR slurries are used as corrosion inhibitor on exposed reinforcement and on bridge griders to protect them from attack of chlorides and sulphates

Advantages :

• Perma Latex - AR is a very strong bonding agent for mortars and concrete to bind with old concrete, stones, steel, brick etc
• Perm Latex AR is a strong corrosion inhibitor. It prevents entry of chloride and sulphate ions into the cementitious structure
• Perma Latex - AR is a superior water proofing product
• Perma Latex, AR is an excellent adhesive for tiles, stones, marble and granite tiles
• It is very easy to use and is non toxic. Perma Latex - AR poses no environment hazards
• Perma Latex - AR increases the compressive, tensile and flexural strength of concrete and mortars
• Perma Latex - AR makes mortars non shrink, strong and dust proof
• Perma Latex - AR is successfully used as a primer to brick bat coba systems on terraces
• Perma Latex - AR is economical than many similar products yet gives multi fold advantages

Packing : Perma Latex - AR is available in 25 liter and 10 liter packing

Perma Unibond is a product based on water dispersible complex polymers and graded aggregates. Application of this product on plaster or concrete surfaces allows for minimal surface preparation thereby saving on cost and labour.

Primary Uses :

• As a bonding agent for cement screeds, render and plaster on concrete
• As a bonding agent for gypsum plaster on concrete or plaster surface

Advantages :

• It is ready to apply product
• it contains grades aggregates which creates a mechanical key
• Renderings can be applied within 60 minutes of application of Perma Unibond and upto a maximum time of 10 days after application of the Unibond coat

Packing : Perma Unibond is supplied in 10 kg & 25 kg packs.

Perma Recrete is a cementatious grey powder with micro fine aggregates which allows reconcreting of the damaged, dilapilated structures. The product is a boon for present day rehabilitation engineers.The product needs only addition of water to form free flowing concrete with enormous initial and final strengths.

Primary Uses :

• Perma Recrete is a very handy tool in the hands of an advanced structural repair engineer to reconstruct parts of beams and columns with far superior strength, fair finished and with very-high speed. Grouting structural cut outs and recess in sanitary fittings like floor traps, annular spaces of pipe passes through walls etc., in residential buildings.

Advantages :

• Perma Recrete has very high work ability hence it can be poured in to the shutters with a mug also This workability helps the product to reach all minor crevices and fill effectively
• Perma Recrete develops very high early strength. It develops strength of the parent concrete within 24 hours of pouring
• Perma Recrete develops a very strong bond with the parent concrete. It is impermeable and protects reinforcements from corrosion
• It does not need elaborate curing just sprinkling water for two days is enough

Available Packing :

• Perma Recrete is supplied in 25 kgs & 50 kgs sack.

Directions for Use:

• Mix Perma Recrete with water in the ratio of 4 litres of water to a 25 kg sack of material to get a uniform free flowing mortar. First add 80 % of recommended water to the powder and mix well. Then slowly add water to get the right consistency (water required for a consistency may vary by 10 to 20 % depending upon various factors).Pour this mortar in the rigidly fixed forms. Care should be taken to see that the contact surfaces are dampened before fixing the form. Shutter forms should be effectively sealed to avoid uncontrolled leakages. If the repaired surface needs replastering then hack the surface immediately after removal of shutters.

Surface Preparation:

• Surfaces to be reconcreted with Perma Recrete should be clean, sound, free from any laitance or any deleterious material. Weak portions of the concrete should be cut back to sound surface. Reinforcements should be cleaned to remove rust and supplement additional reinforcements wherever required. Damp down the concrete surface before fixing the shutter forms.

Perma Polyseal is a two part poly sulphide sealant based on poly sulphide resin, curing agents, select fillers, plasticisers and vulcanising agents. when the base and curing a get are mixed it forms an uniform colour mass.

Which can either be poured in to the horizontal expansion joints or gunned into the vertical joint depending upon the grade. Essentially Perma Polyseal is available in tow grades. pouring grade for horizontal application and gun grade for non slump vertical application.

Primary Uses :

• Perma Polyseal is an expansion joint sealant useful in sealing horizontal as well as vertical joints. Perma Polyseal is used for sealing reappearing cracks on the roofs, shear cracks in the brick works and joints in water tanks.

• Perma Polyseal is used for sealing gaps between the building material of different structures such as concrete and wood, glass and aluminum, and exterior glazing. It is used in expansion joints varying between 6mm to 50 mm.

Advantages :

• Perma Polyseal seals the joints and makes them watertight
• Perma Polyseal accommodates the movement of structures because of expansion contraction and also because of deflections and settlements.
• Perma polyseal is tough floor joints treated with Poly sulphide can be traffic able.
• Perma Polyseal when dry gives an aesthetic smooth grey appearance.
• Perma Polyseal is resistant to chemical spillages and also resistant to Oils, Petrol, Diesel and Solvents

Avilable Packing : 
Perma Polyseal is available in 1 Kg & 4 kg packing.

• All joints to be sealed with Perma Polyseal should be dry, clean and free from any dirt, dust, rust, scale or any protective lacquer or grease.
• Expansion joint fill material (bitumen impregnated board) shall be tightly packed in position so that a clear joint depth as per joint design is available.
• As a thumb rule depth of joint is taken as half of its width and the depth is not less than 6 mm. A bond-breaking tape or cello tape is fixed on the joint fill board to avoid direct contact between Perma Polyseal and the Board.
• Apply masking tape on top surface on either side of the joint to avoid staining of neighbouring area.

• If the sides of the joints are porous and irregular use Polysulphide primer which is a two component material.
• Mix the two components and brush apply on the sides of the joint.
• When the primer becomes tack free apply or pour Perma Polyseal in the joint.

• Transfer the entire contents of the small curing agent pack to the larger pack of the base and mix thoroughly for five minutes by electric drill with blades or manually till a uniform consistency paste is obtained.

• Pour the mixed Perma Polyseal in the joints and finish the joints using rounded spatula or similar object to bring about a smooth surface and also remove any air which might have got entrapped during mixing.
• It is advisable to finish the surface slightly concave to keep the Perma Polyseal unaffected by heavy trolley movements.

Perma Bond Repair is an aqueous emulsion of styrene butadiene copolymer latex, specially formulated for use with cement. Perma Bond Repair modifies the property of cement in mortars and in concrete to make them perform better in terms of waterproofing, repair, corrosion inhibition, bonding, durability and wear resistance.

We provide Perma Bond Repair that is made of superior chemicals. Thatâ��s why, we are a famous Manufacturer, Supplier and Exporter of Perma Bond Repair in India. 

Primary Uses :

• Corrosion protection of steel
• Floor screed and topping
• Concrete and floor screed repairs
• Water proofing and tanking of basements
• Bonding old concrete to new concrete.

Available Packing : Perma Bond Repair is available in 100ml, 1 liter, 5 liters, 10 liters, 25 liters and 100 liters drum.

Additional Information:

• Item Code: PBR

Perma Bond SBR is an aqueous emulsion of Styrene Butadiene Co-polymer latex specially formulated for use with cement. SBR modifies the property of cement in mortars and in concrete to make them perform better. in terms of water proofing, repair, corrosion inhibition, bonding, durability and wear resistance.

Primary Uses :

• Corrosion protection of steel
• Floor screed and topping
• Concrete and floor screed repairs
• Water proofing and tanking of basements
• Bonding old concrete to new concrete

Advantages :

• Water resistant, Excellent adhesion to concrete, steel, brick, stones compatible with cement. High compressive, tensile and flexural strength. Resistant to ingress of salts, mineral oils etc. Non toxic. Suitable for use in potable water tanks. Excellent corrosion protection. Economical when compared with epoxy mortars.

Packing : 

• Perma Bond SBR is available in 100 ml, 500 ml, 1 Ltr, 5 Ltr, 10 Ltr & 25 Ltr and 100 Litres drum.

• Apply passivator coat of SBR+cement slurry.

• On a cleaned and prepared wet surface apply Perma Bond SBR bonding slurry.
• Apply Perma Bond SBR modified mortar by float or trowel to form an uniform smooth surface.
• Bonding slurry sets very fast hence modified mortar application should be fast and immediately after application of bonding slurry.
• Moist cure for 24 hours and then allow it to dry off.

• Coat Slurry = Cement 1 + SBR 1.
• 1 ltr Perma Bond SBR with 1 kg of cement gives a slurry which covers 20 to 25 sq.ft.

• Remove the cover concrete and cutback to the sound concrete zone.
• Remove all the rust from the reinforcement by mechanical means.
• Apply a passivator coat on the cleaned steel and leave it overnight.
• Apply one coat of SBR bonding slurry on the reinforcement and the surrounding concrete surface.
• When the bonding slurry is still tacky apply modified mortar by pressing in position using 10 litre SBR per 50 kg bag of cement.
• Modified mortar can be applied up to a thickness of 20 mm. For building up to higher thickness leave the first layer to dry overnight and apply second layer with one more coat of bonding slurry.
• Moist cure for 24 hours and allow it to dry off.

• Cutback to sound concrete surface and make the surface wet.
• Apply the bonding slurry and when it is still wet apply the SBR modified mortar.
• Feather edge to match the original floor level.
• In case of nosing carefully build up the edge and give a smooth finish.
• Moist cure for 24 hours and allow it to dry off.

Perma Bond - AR is an aqueous emulsion of Acrylic co polymers specially formulated for use with cement. Perma Bond - AR modifies the property of cement in mortars and in concrete to make them perform better.

Primary Uses :

• Corrosion protection of steel
• Repairs of structural members
• Repairs of industrial floors
• Water proofing of basements tanks by tanking
• Repairs to marine structures

Advantages :

• Perma Bond - AR is water resistant and has excellent adhesion to concrete, steel, brick, stones and is compatible with cement. Perma Bond - AR modified mortars and concrete show higher compressive, tensile and flexural strengths. Perma Bond - AR mortar makes concrete resistant to ingress of salt, mineral oils etc. The product is non toxic, hence suitable for use in potable water tanks and food storage tanks.

Packing :

• Perma Bond - AR is available in 500 ml, 1 Liter, 5 Liters, 10ltr, 25ltr & 100ltr packing

Perma Master Bond is a permanent epoxy adhesive for internal or external bonding or renderings, granolithic toppings, and concrete. The ultimate bond strength is greater than the tensile strength of concrete. Perma Master Bond does not shrink and provides an even and stress free bond.

Primary Uses :

• Perma Master Bond may be applied to clean, sound and durable surface, i.e. glazed tiles and bricks, ceramic and quarry tiles, terrazzo tiles and bricks, ceramic and quarry tiles, terrazzo tiles and floors, old and worn concrete, engineering and semi-engineering bricks.

Advantages :

• High Strength
• Non Shrink
• Durable
• Resistant to chemical attack
• Supplied in pre-weighed units
• Solvent less epoxy

Available Packing : Perma Master Bond is supplied in 10 kg.

• Perma Flowcrete is useful to reconstruct parts of beams and columns with far superior strength and with very high speed. Grouting structural cut outs and recess in sanitary fittings like floor traps, annular spaces of pipe passes through walls etc., in residential buildings.

Perma Rust Remover is an aqueous green liquid which removes the rust and forms a protective cover around the reinforcement and other steel members. Perma Rust Remover is just brush applied on the metal surfaces. it is an essential pretreatment to the re bars before starting. Perma Bond SBR or Perma Bond - AR treatments. it is also a pretreatment to steel before any epoxy or Polyurethane coating.

Primary Uses :

• Perma Rust Remover is used to remove rust from metal surfaces and reinforcing bars. treatment of steel with Perma Rust Remover is a pre requirement for further anti corrosive repairs and epoxy coatings.

Advantages :

• Solvent free hence environ,entally safe
• Easily applied by brush
• Rust removing is done very easily
• Saving in time
• Reduces manpower

Packing : 100ml, 1 Ltr, 2 Ltr, 20 Ltr, 500 gms, 10 kg, 30 kg & 120 kg.

• Perma Hypercrete combines waterproofing with tough and hard-wearing surface. Develops excellent bond with most of the building materials. It is highly durable in continuous wet conditions. It is not affected by UV rays and by chemicals ranging from mild acids to strong alkalies. Most properties of the coating improve with age. Bonding aid for new and old concrete / mortar repair and patching of concrete.

• The surface should be free from all dust or foreign matters. All concrete surfaces should be thoroughly pre-wetted for at least one hour prior to the application of Perma Hypercrete coating, by pouring water on flat surface or by vigorously spraying water on vertical / inclined surfaces. Before treating the surface with Perma Hypercrete, any excess water should be removed so that surface is only damp. In no case there should be standing water or a shiny wet surface. Depressions may be filled and levelled using Perma Hypercrete modified mortar prepared by the mixing 1 kg cement, 1.5 kg silica sand and 0.5 kg Perma Hypercrete.
• Perma Hypercrete is mixed with neat cement in the ratio of 1 kg cement: 1 kg of Perma Hypercrete. It should be stirred thoroughly until no air bubbles remain in the mix. The mix has to be applied by brush on the prepared surface. Two or more coats are recommended. First coat should be allowed to air dry for 5-6 hours before application of second coat.

• Perma Hypercrete system must be applied at temperature above 10°C. and preferably below, 35°C. During the first 12 hours of curing, it must be protected from abrasion, rain and other adverse conditions. No traffic should be allowed on a Perma Hypercrete treated surface within 48 hours of application. After application of final coat of Perma Hypercrete the surface should be allowed to dry for 2 – 6 Hours. After maximum period of 6 hours of final application, moist curing should be done for the next 24 hours by way of mist spraying. During this period at no point of time should the Perma Hypercrete coating be left completely dry or submerged in water. Following moist curing the Perma Hypercerete coating should be allowed to air dry for 3 days before submersion in water or putting the surface to regular use.

Perma Acrylic Bond Repair (PABR) is an aqueous emulsion of acrylic co-polymer latex, specially formulated for use with cement. (PABR) modifies the property of cement in mortars and in concrete to make them perform better. Useful for repairing of RCC beams, columns, slabs & other RCC members.

Primary Uses :

• Concrete and floor screed repairs
• Corrosion protection of steel
• Floor screed and topping
• Bonding old concrete to new concrete
• Water proofing and tanking of basements

Cementitious Mortar For Heavy Duty Masonry Pointing And Patch Up Repair Of Concrete Structures

Description:

• Perma Jointing Mortar is a cementitious powder which needs just addition of required amount of water to form a thicksotropic paste which is slump free and ideal for use as a pointing material in the stone masonry structures of dams and historic buildings.

Primary Uses:

• Perma Jointing Mortar is primarily used as pointing mortar in heavy masonry structures of dams, hydraulic structures and historic buildings.
• It is also successfully used in repair of structural members in buildings where high strength and non slump mortar is required especially when these repairs are to be carried out against gravity.

Advantages:

• Perma Jointing Mortar is a single component product and needs only addition of water on site hence easy to use.
• Perma Jointing Mortar achieves high compressive, tensile and flexural strengths apart from its strong adhesive strength.
• Perma Jointing Mortar is non-shrink when applied in the recommended thickness and does not need elaborate curing.
• Perma Jointing Mortar is highly thicksotropic hence non slump when applied in vertical surfaces or on the soffits.

Directions For Use:

• Mix Perma Jointing Mortar with water in the proportion of 130 ml water to 1 kg of jointing mortar powder and mix thoroughly using a slow speed mechanical mixer to get a smooth consistency paste. As with all repair jobs the site conditions vary hence the water / powder ratios may be adjusted to suit the application requirements.
• Apply an epoxy bonding agent such as Perma Master Bond on the surface to be repaired or on the sides of the stone in the joint to be pointed and wait till it becomes tacky which could be two hours from the time of application.
• Apply the jointing mortar paste on to the surface using a suitable spatula so that the thickness of fill or repair is not more than 20 mm at a time.
• Should the thickness increase the first layer may be serrated after finishing to create a mechanical key for the second coat. The second coat may be applied after the first coat has hardened leaving it to cure overnight.

Properties

Yield / Coverage:

• Perma Jointing Mortar gives a yield of 12.5 Ltrs. when mixed with 25 Kg powder.60 kgs of Perma Jointing Mortar covers an area of 50 sq.ft if applied to a thickness of 4 mm.

Packing:

• Perma Jointing Mortar is available in 10 kg & 25 kg sacks.

Shelf Life:

• Perma Jointing Mortar has a shelf life of 12 months if kept in a dry environment, in its original packing. If stored in conditions of high temperature and / or humidity, the shelf life may be reduced to as little as 4 months.