ASTM C11-18 pdf free.Standard Terminology Relating to Gypsum and Related Building Materials and Systems.
This standard covers terminology relating to gypsumand related building materials and systems. The terms aregenerically defined. More specific and expanded definitionsmay appear in appropriate standards.This international standard was developed in accor-dance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards，Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.control (expansion-contraction) joint, n—a designed separa-tion in the system materials that allows for movement causedby expansion or contraction of the system. The constructionof the separation is accomplished by one of the followingmethods: (l ) manufactured devices suitable for thisapplication, or (2) by field fabrication of suitable materials.core (of gypsum board), n—the hardened material filling thespace between the face and back papers consisting substan-tially of rehydrated gypsum with additives.
core (of gypsum panel products), n—the hardened material,consisting substantially of gypsum, with additives, that fillsthe space between the face and the back of the gypsum panelproduct.bridging,n—in framing, sections of wood or metal pieces usedbetween framing members to stiffen,give lateral support,and minimize rotation.brown coat, n-the second layer in three-coat plaster applica-tion.building construction joint,n—a designed division of abuilding that allows movement of all component parts of thebuilding, in any plane，which may be caused by thermal,seismic， wind loading, or any other force.The constructionof the separation is accomplished by one of the followingmethods: (l) manufactured devices suitable for thisapplication, or (2) by field fabrication of suitable materials.calcined gypsum,a dry powder; primarily calcium sulfatehemihydrate, resulting from calcination of gypsum; cemen-titious base for production of most gypsum plasters: alsocalled plaster of paris, sometimes called stucco.cementitious material, n—a material that，when mixed withwater， with or without aggregate， provides the plasticity andthe cohesive and adhesive properties necessary forplacement, and the formation of a rigid mass.ASTM C11 pdf download.