Saint Gobain Gyproc India Ltd. (Formerly India Gypsum Ltd.)

Transcription

1 Saint Gobain Gyproc India Ltd. (Formerly India Gypsum Ltd.) Gyproc Plasters The cracks in cement sand plaster are an inherent feature which cannot be completely prevented but can only be controlled and minimized. Cement sand plaster tends to shrink due to loss of moisture and subsequent reduction in volume. It is restrained by a mechanical bond either with a backing of concrete which has already undergone most of shrinkage or with brick / stone masonry which is practically immune from movement. This restraint to shrinkage causes a tensile stress in the plaster which is maximum at the skin. If the tensile stress is more than what can be borne by the mortar, cracks develop and extend gradually through the full depth of the plaster. In order to prevent this phenomenon it is necessary to limit the shrinkage either by limiting tensile stresses to those not exceeding the safe stresses that mortar can resist or by applying a plaster which creeps and does not crack. Use of unsound materials, bad workmanship, and use of high water / cement ratio, freezing and thawing, thermal effect, heat of hydration, shrinkage stresses, structural stresses, alkali aggregate reaction, and sulphate action are some of the major causes of development of cracks in the cement sand plaster. Gyproc Plasters are the right choice of plastering for the following reasons: 1) It can be applied directly over the brick / stone masonry or concrete surfaces 2) It is better than traditional plaster as it eliminates the two processes of Cement sand plaster & POP punning. 3) It does not require water curing 4) No shrinkage cracks 5) Faster Application (Reduced Construction schedule) 6) The use of light weight aggregates in the plaster mix help to improve the existing Thermal resistance. (Thermal Resistance R = 0.07m²K/W at 13mm thickness) 7) It is non-combustible (when tested in accordance with BS: 476: part 4:1970), therefore a good form of protection to the building structure. 8) It contains light weight aggregates which improve the bond to concrete, brick and stone masonry based backgrounds. 9) It attains high early strength 10) It is a pre-mixed plaster, hence its use has reduced the requirement of supervision required for mixing as in the case of cement sand plastering. 11) Ready to paint in as little as 72 hours. 12) It is compatible with Decorative Applications. Testing Standards Confirms to IS 2542 (Part I)-1964 for physical characteristics Confirms to IS 2547(Part I & II)-1976 for chemical characteristics

2 Gyproc One Coat Plaster (N1) Gyproc One Coat is a vermiculite based gypsum plaster. Vermiculite is natural mineral which expands with the application of heat. It is formed by hydration of certain basaltic minerals. 1) Compact Dry Bulk Density - Max. 770 kg/m³ 2) Wet Bulk Density gm/cm³ 3) Initial Setting Time - 15 to 20 Minutes, Hence wastages are less. 4) Final Setting Time - 20 to 25 Minutes 5) It gives a better coverage, Approx Coverage 68 Sq.Mtr. / MT 6) Workability - Easy 7) Compressive strength N/mm² to 7.5 N/mm² 8) It gives a hard & dense surface impact resistance 9) Finish - Attractive Smooth surface with off white Color 10) It gives an off white colored Finish Surface. Gyproc One Coat Supreme Plaster (N2) Gyproc One Coat supreme is a gypsum plaster containing lightweight aggregate. These aggregates are naturally occurring, volcanic glass. It contains 2 to 5 percent of water which makes it expand, when heated to a temperature sufficient to soften it. 1) Compact Dry Bulk Density kg/m³ 2) Wet Bulk Density gm/cm³ 3) Initial Setting time Minutes. Hence wastages are less. 4) Final Setting time Minutes 3) It gives a larger coverage than Vermiculite based Gypsum Plaster, Approx Coverage 75 Sq.Mtr. / Mt 4) Workability Very easy due to softness of aggregate used. 5) Compressive strength 5 N/mm² to 6 N/mm² 6) It gives a high early hard & dense surface impact resistance 7) Finish - Attractive Marble like Smooth surface 8) It gives you an absolute white colored finish surface.

3 Gyproc One Coat Elite Plaster (N2+) Gyproc One Coat Elite is a gypsum plaster containing higher lightweight aggregate dosages. Those aggregates are naturally occurring, volcanic glass. It contains around 2 to 5 percent of water which makes it expand, when heated to a temperature sufficient to soften it. 1) Compact Bulk Density - Max kg/m³ 2) Wet Bulk Density gm/cm³ 3) Initial Setting time Minutes. Hence wastages are less. 4) Final Setting time Minutes 3) It gives a larger coverage than Vermiculite based Gypsum Plaster, Approx Coverage Sq.Mtr. / Mt 4) Workability Very easy due to softness of aggregate used. 5) Compressive strength 4.5 N/mm² to 5.5 N/mm² 6) It gives a high early hard & dense surface impact resistance 7) Finish - Attractive Marble like Smooth surface 8) It gives you an absolute white colored finish surface. Whiteness more than Supreme Gyproc Xpert Plaster Gyproc (R) Xpert Plasters category is gypsum based plaster suitable for application of Level Patches, Level Strips, and Ceiling Plasters on most internal backgrounds bricks, blocks and concrete surfaces. It consists, Gypsum hemihydrates formulated with special additives to enhance working and setting characteristics. It contains light weight exfoliated aggregates to improve plaster s workability, coverage, application and post usage behavior. It dries faster, saves time and helps progress of work. 1) Compact Bulk Density - Max. 770 kg/m³ 2) Wet Bulk Density gm/cm³ 3) Initial Setting time Minutes. 4) Final Setting time Minutes 5) It gives a Better Coverage of 70 Sq.Mtr. / Mt 6) Workability Very easy due to softness of aggregate used. 7) Compressive strength 5.5 N/mm² to 6.5 N/mm² 8) It gives a high early hard & dense surface impact resistance 9) Finish - Attractive Marble like Smooth surface 10) It gives you an absolute white colored finish surface.

4 Bond it Bonding Agent Bond it Bonding Agent - a unique product that serves as an excellent bond on the RCC background and the internal gypsum based or any other plaster based wall lining. Its unique formula of Polymer, selected sand fillers, additives & polymers makes it coarse and improves its bonding properties. You need not physically develop the surface by hacking or any other methods. Bonding Agent is specially formulated as a plaster bonding agent for pre treatment of smooth backgrounds. It contains an aggregate to provide a mechanical key. It is used on smooth, sound, dust free backgrounds, e.g. cast concrete, painted and glazed surfaces and MR grade plasterboard prior to plastering. It is colored green to help avoid missing any areas, and is best applied by short pile rollers to give a complete covering. It should be left a minimum of 24 hours before plastering over it. Features & Benefits: Excellent cohesive bond to RCC, Concrete and other surfaces. No curing or surface treatment No shrinkage Moisture Tolerant Can be used in temperatures from 5 0 to 45 0 C. Plaster application can begin any time after the application Better adhesion /bonding due to lime/sand powder Due to green color in bonding agent, it is easy to see where it has been applied. Higher coverage Contains fine aggregates for better mechanical, as well as chemical adhesion. Pack sizes to suit your requirement 5 Kg, 10Kg & 20 Kg Three months from Date of Manufacturing Method of Application: 1. For the surface preparation: All surfaces must be sound, clean, dry and free from any material which may impair adhesion. Any faults in the structure, particularly those which may lead to moisture penetration, must be rectified. 2. For the material: a. Mix material properly with clean rod & apply single coat with brush. b. Do not add water.

5 Gyproc wall finish plaster. Gyproc wall finish is a finish plaster specially formulated for skimming sand cement or board in thickness of 0.5 to 3.0 mm. It enables significantly longer maintenance & lower long term cost in most of the areas of many types of building. It may be used on wide range of backgrounds including most undercoat plasters & gives a smooth Finish surface on any partition or wall lining systems. 1) Colour Off-White 2) Pot Life 180 minutes 3) Fineness 99% passing through 150 microns. 4) Coverage sq. ft. / Kg / mm in double coat. 5) Recommended Mixing Ratio ml water per 1 Kg of material.. 1) Mixing of Gyproc wall finish plays very important role in the application hence it should be thoroughly mixed before application by hands or electric stirrer in order to get best results. 2) Sanding should not be done by using rough emery paper. This may gives scratches or marks on final finish. 3) The total thickness of the Gyproc wall finish should not be exceeded to 3 mm.