Gypsum plaster is a green building product. Green Product Gypsum Plaster vs Cement PlasterĬement plaster is not a green building product. Gypsum plaster is manufactured only in factories. ManufacturingĬement plaster is manufactured both at the site and in the factory. Gypsum plaster is made up of only gypsum powder instead of Portland cement and it doesn’t need sand. The mixture of sand and cement is done on-site in different ratios and its packing is also available in the market. So, today’s In this article, we are going to discuss the difference between cement plaster and Gypsum plaster.Ĭement plaster is made up of sand, portland cement and water. So you do not have to get confused between Gypsum Plaster vs Cement Plaster because both of them have a different appearance, strength and application area. Today, Gypsum plaster is being used on a large scale in many countries like Australia, Canada, the United Kingdom, and the USA etc. This is the proof of durability and performance of gypsum plaster. (2005) “Compressive Testing and Analysis of a Typical Straw Wall Plaster”, in Proceedings of Engineering Sustainability 2005 Conference, Pittsburgh, USA.Gypsum plaster is an old cement plastering technology in which the Giza pyramid made in Egypt is one of its oldest examples in which internal plaster has to be been done by gypsum plaster. Ontario Straw Bale Building Coalition-OSBBC (2004) “Straw Bale Building: An Information Package for Building Officials in Ontario”, OSBBC, Spencerville, Ontario. (2003) “Structural Testing of Plasters for StrawBale Construction”, Ecological Building Network, accessed September 14, 2005. (2003) “In-Plane Cyclic Test of Plastered Straw Bale Wall Assemblies, Ecobuild Network”, accessed September 14, 2005.ĪSTM C 109 (1998) “Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in of 50-mm Cube Specimens)”, Annual Book of ASTM Standards, Section 4-Construction, Volume 04.01-Cement lime Gypsum, West Conshohocken, PA.ĪSTM C 469 (2002) “Static Modulus of Elasticity and Poisson's Ratio of Concrete in Compression”, Annual Book of ASTM Standards, Section 4-Construction, Volume 04.02-Concrete and Aggregates, West Conshohocken, PA.ĪSTM D 422 (2002) “Standard Test Method for Particle-Size Analysis of Soils”, Annual Book of ASTMStandards, Section 4-Construction, Volume 04.08-Soil and Rock, West Conshohocken, PA.ĪSTM C 39 (2004) “Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens”, Annual Book of ASTM Standards, Section 4-Construction, Volume 04.02-Concrete and Aggregates, West Conshohocken, PA. This process is experimental and the keywords may be updated as the learning algorithm improves.Īsh, C., Aschheim, M. These keywords were added by machine and not by the authors. Plaster made with soil was found to have greater strength than the plaster made with bagged clay or lime-cement plaster. As moisture content at the time of testing increased, both the strength and the stiffness decreased proportionally. As clay content increased, strength increased proportionally and stiffness was unaffected. As the drying time increased between 10 days and 18 days, strength was unaffected but modulus of elasticity increased proportionally. It was found that as initial moisture content increased, strength and modulus of elasticity was unaffected for the earthen plaster. Compressive testing was conducted on 50-mm plaster cubes and 100-mm by 200-mm plaster cylinders. Clayey silt soil, bagged ball clay and lime-cement are compared as plaster binders for straw-bale applications. This study investigated the importance of initial plaster moisture content, drying time, clay content and, moisture content at the time of testing. A better understanding of the parameters affecting earthen plaster strength is essential for safe and effective use of this building technique. Straw-bale construction is an emerging building method and many builders choose to plaster the straw bales with earthen plaster to reduce the embodied energy of the structure.
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