The buildings of the future will continue to be taller. Naturally, there will be a need for stringent safety regulations and light weight construction materials that offer superior strength, thus making traditional construction materials obsolete. Gypsum plasterboards offer solutions for all the above mentioned requirements. Since they are eight to ten times lighter than conventional masonry systems, they offer three to four times’ faster construction speeds. As gypsum has good fire and moisture resistance properties, gypsum plasterboards offer high levels of safety as well. Gypsum products are completely recyclable, and hence, offer an environment friendly construction solution. Due to all these factors, it is no surprise that more than eighty percent of all interior construction in developed nations used drywall techniques.
Gypsum is chemically calcium sulfate dihydrate (CaSO4.2H2O). When dissolved in water, it yields calcium ions (Ca2+) and sulfate-sulfur ions (SO42-). Both of these ions are essential major nutrients for growing plants. In addition to this, calcium also plays a vital role in establishing and maintaining good chemical balance in soil, water and plants. Gypsum is one of those rare materials that perform in all three categories of soil treatment: an amendment, conditioner, and fertilizer. The usage of gypsum in agriculture can be grouped into following heads:
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The material should be compatible with all the other materials with which it comes into contact. For example, the set model should easily be removed from the impression without damage to its surface and fracture of teeth. It should give a good colour contrast with the various waxes which are often used to produce wax patterns.
The clay which the gypsum attracts comes from many sources. The main source is soil erosion. This can occur in rain runoff, from bare croplands, and from over-grazed pastures. A crop cover on the surface of the soil helps prevent this erosion. Livestock on a shoreline or wading in a pond can also suspend sediment, as well as add manure. Ducks, geese, and bottom-feeding fish can affect turbidity. Unusual weather conditions sometimes also stir up sediment. Shallow water allows windy conditions to keep the sediment stirred up.
Today, the center for investigations is the Four Coasts project. Research Collaborative (co-founded by Holmes), and design research on hydrological control infrastructures, (aquifer systems), in South Florida, supported by the Graham Foundation for Advanced Studies in the Fine Arts.
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