CONCRETE CASTING AND POWERFLOATING.
Bituminous System
Asphalt
also known as bitumen, is a tacky, black and highly viscous liquid or semi solid form ofpetroleum The primary use of asphalt/bitumen is in road construction, where it is used as the glue or binder mixed with aggregate particles to create asphalt concrete Its other main uses are for bituminous waterproofing products, including the production of waterproofing membranes and protection boards and for sealing flat roofs There are two general types of polymer modified bitumen membranes Those with the principal modifier being atactic polypropylene ( and those with bitumen modified with styrene butadiene styrene ( This polymer modified membranes differ in characteristics as well as application
Generally, atactic polypropylene polymer modified bitumen possess the characteristic of a plasticised asphalt whereas styrene butadiene styrene polymer modified bitumen have a characteristic of rubberised asphalt
PVC System (Polyvinyl Chloride)
Polyvinyl
Chloride, commonly abbreviated as PVC, is the third most widely produced plastic, after
polyethylene and polypropylene. PVC is used in construction because it is more effective than
traditional materials. It can be made softer and more flexible by the addition of plasticisers
Thermoplastic materials are distinguished from thermosets in which there is no chemical cross linking. Because of the material s chemical nature, some thermoplastic membrane may be seamed by either hot air or solvent welding
PVC System (Polyvinyl Chloride)
Polyvinyl
Chloride, commonly abbreviated as PVC, is the third most widely produced plastic, after
polyethylene and polypropylene. PVC is used in construction because it is more effective than
traditional materials. It can be made softer and more flexible by the addition of plasticisers
Thermoplastic materials are distinguished from thermosets in which there is no chemical cross linking. Because of the material s chemical nature, some thermoplastic membrane may be seamed by either hot air or solvent welding