Significant role of Gypsum Plaster in Ceramic Industry

by Pooja Late so cut

The construction industry in recent years has witnessed technology advancements, new trends and innovations across applications. All this is aimed at making construction much faster and producing higher performance. Nevertheless, only few people have thought about the replacement for the old method of cement surface plastering and how it has become an older method of plastering i.e. gypsum plastering. Gypsum plaster has become a material used for interior construction and many cement manufacturers have taken the opportunity to make different kind of gypsum plaster. The Pyramids of Giza located in Egypt is the oldest example where gypsum plaster can be found.

What is Gypsum?

Gypsum is a material that is light-weighted and formed because of the evaporation of sea water into huge primordial basins. Calcium Sulphate Di-hydrate (CaSO4.2H2O), is its chemical composition. It naturally contains 21 percent of water by molecular weight. One of the basic properties of gypsum is its excellent insulation, which is both acoustic and thermal. It has the ability to resist moisture, it also provide fire protection.

What is Gypsum Plaster?

When walls are constructed with block or brick, they are completed with a coat of plaster. This is known as internal plastering. This internal plastering is done traditionally with a mixture of sand and cement plastering and finished with Paris of Plaster pruning. Internal plastering goes through two stage process and has to do with multiple elements such as cement, sand and water. This is then mixed onsite. Well this traditional way of plastering has been down away with by the direct application of a single coast of gypsum plaster. Gypsum plaster is produced as a result of calcinations of the raw gypsum in an automatic kettle under regulated temperature.

Comparison of sand cement and gypsum plaster

Sand Cement Vs Gypsum Plaster (Smooth Crack Free Surface)

Sand Cement Plaster                                                Gypsum Plaster
• Shrinkage Cracks                                                     No shrinkage cracks
• Increases thickness up to 50mm                               Thickness of wall lining limited to 15-20 mm
• cannot achieve Line and Level                                 perfect level and line is achievable.

Sand Cement Vs Gypsum Plaster (Finishing)

Sand Cement Plaster 

• Need to use POP to finish
• With POP – cracking of surfaces occurs
• POP – Wastage is as high as 30-40%

Gypsum Plaster

• It has smooth finishing
• It is perfect for line and level that has edges and sharp corners.
• Can be applied directly on RCC, block and brick. There isn’t any need for a separate finishing product.

The Benefits of gypsum plaster to builders and developers

• Performance – it is durable and light-weighted
• High productivity – means a faster work (plastering time is reduced by 70 percent when compared to the POP and sand cement plaster method.
• Smooth finishing
• Green material.
• Cleaner sites

The Benefits of gypsum plaster to the end customer

• There is reduction in the time needed to do the plastering.
• There aren’t shrinkage cracks on ceilings and walls.
• It is perfectly leveled, lined and smooth walls.
• Gypsum plaster has low thermal conductivity; therefore you save electricity used during air conditioning.

Author’s Bio

Kelvin Louis in this post looks at how gypsum plaster plays an important role in the ceramic industry and how cement manufacturers have taken advantage of the benefit that it has for interior decoration.

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Created on Apr 26th 2018 05:01. Viewed 460 times.

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