India ranks second on the basis of population in the world. Agricultural land utilised by the burgeoning population, the cultivable land resource is shrinking day by day. To meet the food, fibre, fuel, fodder, and other needs of the growing population, the productivity of agricultural land has to be increased rationally. This requires the use of all resources judiciously. In India, the mineral gypsum is mostly used in the manufacture of cement, fertiliser, plaster of Paris, ceramics and distemper. Smaller quantity is used as soil conditioner, for carving and statuary purposes. India has huge resources of natural gypsum of the order of 1120 million tonnes, of which recoverable reserves are estimated at 237 million tonnes. Over 95 per cent of the natural gypsum come from Rajasthan.
Some gypsum plaster systems can be applied directly to drywall with the use of bonding agents. This type of plaster, known as ”veneer plaster”, is typically applied in one thin coat. Gypsum veneer plaster is fast and usually less expensive than traditional gypsum plaster. When applying a veneer plaster, all joints in the drywall must be prepared with joint compound or with the manufacturer’s recommended joint treatment materials. Once the joints are treated, a bonding agent is required. This is a water based PVA (polyvinyl acetate) or an acrylic bonding agent. PVA bonding agents are for interior use only because they re-emulsify when they get wet. PVA bonding agents are the most popular because they can be dry before the plaster coat is applied (as opposed to an acrylic bonding agent, which must still be wet when the plaster is applied, forcing the applicator to rush the process). A controlled environment is also important when applying a gypsum veneer finish, although some veneers are modified with acrylics, cement and chemicals, providing a better bond, higher compressive and tensile strengths, crack resistance, color retention and crack resistance. These modifications may make the product easier to work with and will give the applicator more flexibility. Once the finish coat is dry and completed, it should be sealed with a water based sealer.
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At each stop, a hallway or other space to which there is direct access from the cab shall have passage within line of sight at two linear feet outside the cab door on-center to not less than two means of emergency egress, not more than one of which means may be an emergency egress window.
Gypsum’s debut exhibition, ’Spectral Days’, is an unusual photography curation from international artist, Setareh Shahbazi. Born in Tehran in 1978 but forced into exile to Germany in 1985, Shahbazi presents a collection of her own family photographs from around this time, which have been revived and revamped through various experimental digital techniques. Exploring the remembrance of the past, captured in old photographs, there’s a powerful, overarching meaning behind the exhibition.
These gypsum panels are durable and provide cleanliness to the food processing areas. They are usually vinyl laminated to seal out dirt, moisture and odors. The vinyl surfaces are embossed and are exceptionally stain resistant. They can also withstand repeated washings. Lighting efficiency is maximized because they have exceedingly reflective surfaces.
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