玻璃纤维毡石膏板：发展历程、优势及有效的空气阻隔应用策略.pdf

1、Matthew D.HollingsworthGeorgia-Pacific Building Products,LLCGlass-Mat Gypsum Sheathing:Evolution,Advantages,and Effective Strategies for Air Barrier ApplicationsGlass-Mat Gypsum Sheathing:Evolution,Advantages,and Effective Strategies for Air Barrier ApplicationsLearning Objectives1.Explain why Glass

2、-Mat Sheathing is commonly used as a substrate.2.Explore the Manufacturing and Installation Process of Glass-Mat Sheathing.3.Identify common gotchas,watchouts,and workarounds when installing an AB-WRB over glass-mat sheathing.4.Compare ASTM D4541 and ABAA T0002 and investigate test results.Matthew H

3、ollingsworthGeorgia-Pacific Building Products,LLC.GlassGlass-Mat Gypsum SheathingMat Gypsum Sheathing44.22What is Gypsum?2022 Georgia-Pacific Gypsum LLC.All rights reserved.Do not copy or distribute.Common Name:GypsumChemical name:Calcium Sulfate DihydrateChemical formula:Form:Soft,brittle,non-metal

4、lic mineralNon-construction uses:Fertilizer/Soil supplement Ingredient in food processing Toothpaste Dental moldsHistory of gypsum in construction.History of gypsum in construction.Used for thousands of years as a building material and architectural detailing element Egyptians used gypsum blocks and

5、 plaster in the building of the pyramid of Cheops In the late 1700s,the French chemist Lavoisier analyzed the chemical make-up of gypsum which help with the development Plaster of Paris as a building material.In 1888 original gypsum wall boards were made by layering plaster within four plies of wool

6、 felt paper-board with had open untaped edges.5History of gypsum in construction.History of gypsum in construction.1916-Paper-faced was introduced.ready-to-finish panel with wrapped edges 30 and 40s Introduction of fire-resistance tests and Type-X board Late 60s through the early 1970s,growth of the