1.1本试验方法涵盖了在碱溶液中调节后测定玻璃纤维网断裂力的程序。该方法适用于PB级外部绝缘和饰面系统（EIFS）中使用的玻璃纤维网，其底涂层包含波特兰水泥作为成分。 1.2破断力表示为每单位网格宽度的力和未暴露于碱处理的网格破断力的百分比。 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。

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. 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.