Knowing how the gypsum is to be used will determine which product (TYPE) you should use. Gypsum concrete has been installed and specified since the late 1970s. The chemical difference is that gypsum contains two waters and anhydrite is without water. Gypsum beds were formed due to the evaporation of water from the massive prehistoric sea basins. Gypsum Plaster is a highly processed form of calcium sulphate which indeed is highly durable and stable. 2H 2 O. When water evaporates, the minerals present in it become concentrated, and crystallize. Faster installation and cure time than lightweight concrete. See Gypsum Concrete vs. Lightweight Concrete. Gypsum plasterboard is specially designed for noise reduction and prevent reverberation. Gypsum is the most common sulfate mineral. The entire gypsum plaster are approved by CII – IBGC for consideration towards Green Building rating system (LEED) Points. Gypsum products are developed to focus more on sound insulation properties. 2H 2 O) is very similar to Anhydrite (CaSO 4). Aggregates The introduction of an aggregate such as sand to the hemihydrate slurry will reduce the strength of the hardened mass because it spreads the new hydrated gypsum crystals apart. Green cement is an environmentally friendly product that minimizes carbon footprint of cement production. The ISO rating is not strictly related to compressive strength, although it is one of the key criteria of the particular ISO designation.Another factor used to determine ISO type is the expansion. Dental gypsum is separated into 5 different categories of products, commonly referred to as TYPES. Storage of Gypsum at Site. Gypsum is an evaporite mineral most commonly found in layered sedimentary deposits in association with halite, anhydrite, sulfur, calcite, and dolomite. Sand also prevents the new hydrated gypsum crystals from growing into each other. Sam Kubba PH.D., LEED AP, in Handbook of Green Building Design and Construction (Second Edition), 2017. Gypsum Concrete is a GREEN BUILDING MATERIAL. Gypsum Wall Board (Drywall) Gypsum board is the most common indoor building material in the United States. GreenCal gypsum granular supplies readily available calcium and sulphur without significantly affecting soil pH. The surface exposed to moisture reduces the setting time and strength of gypsum plaster. INTERIOR WALLS Mold/Moisture-Resistant Gypsum Panels are an excellent material for interior wall construction wherever increased protection against the absorption and infiltration of moisture and/or enhanced resistance to the growth of mildew and mold are desired as compared to traditional drywall. GreenCal gypsum granular is suitable for spreading as a straight using standard spreading systems. Mineral Gypsum is a natural and eco friendly product. The minimum shelf life of gypsum plasters 3 to 4 months from the date of manufacture. The compressive strength of Gypsum Concrete is greater than lightweight concrete, with strengths up to 10,000 psi. Acoustic Properties of Gypsum. Many attempts have been made to produce green cements and several green cement types have been produced. The majority of these are based on technological advances that include energy-efficient, low carbon production methods, new cement formulations, geopolymers, carbon-negative … The superior strength of the granules also allows GreenCal granular to be used in fertiliser blending equipment. Other methods like masonry would act good, which is commonly used in a higher thickness that now is found less demanding compared to gypsum. Gypsum (CaSO 4. Gypsum products have high durability . So, Gypsum bags have to be stored on elevated surface (dry platform) made of brick/timber/concrete at site. 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