ASTM E2098玻璃纤维增强网暴露于氢氧化钠溶液后拉伸断裂强度测定标准试验方法

ASTM E2098  Standard Test Method for Determining Tensile Breaking Strength of Glass Fiber Reinforcing Mesh for Use in Class PB Exterior Insulation and Finish Systems (EIFS), after Exposure to a Sodium Hydroxide Solution
ASTM E2098 PB级外绝缘和涂层系统(EIFS)中使用玻璃纤维增强网暴露于氢氧化钠溶液后拉伸断裂强度测定标准试验方法

Glass fiber reinforcing meshes are used to strengthen EIFS. The reinforcing meshes are embedded into base coats that contain portland cement, which potentially exposes the glass fibers in the reinforcing meshes to weakening by the action of alkali. The breaking force following alkali exposure as determined by this method, is a factor used to comparatively evaluate the alkali resistance of EIFS glass fiber reinforcing meshes in the laboratory.
This test method does not purport to simulate the conditions that may be encountered in service. The performance of an EIFS is a function of many factors, such as proper installation, rigidity of supporting construction and resistance of the EIFS to deterioration by other causes.

1. Scope
1.1 This test method covers procedures for determining the breaking force of glass fiber mesh following their conditioning in an alkali solution. The method is applicable to glass fiber mesh used in Class PB Exterior Insulation and Finish Systems (EIFS) with base coats that contain portland cement as an ingredient.
1.2 Breaking force is expressed both as force per unit width of mesh and as a percentage of the breaking force of the mesh that has not been exposed to alkali conditioning.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents (purchase separately)  The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
ASTM D76 Specification for Tensile Testing Machines for Textiles
ASTM D579 Specification for Greige Woven Glass Fabrics
ASTM D5035 Test Method for Breaking Force and Elongation of Textile Fabrics (Strip Method)
Other Documents
EIFSIndustryMembersA Guideline Specification for Exterior Insulation and Finish Systems (EIFS), Class PB
Index Terms
alkali; breaking strength; exterior insulation and finish systems; glass fiber reinforcing mesh; tensile;

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 来源：防火网　发布时间：11/13/2013 点击次数：3371