建筑应用件用建筑物保温制品.剪切特性的测定

[中文适用范围]： 本国际标准规定了测定剪切性能的设备和程序。它适用于隔热产品。注：本国际标准中描述的测试不测定纯剪切性能，而是测量对试样主要表面施加两个相反平行力的影响。但是，按照惯例，本文中将该测试称为“剪切”。与其他测量剪切性能的方法（例如弯曲测试）相比，沿切向施加到试样主要表面的力被认为更接近地代表在许多建筑应用中施加在隔热产品（尤其是墙壁）上的应力。 [外文原描述]： This International Standard specifies the equipment and procedures for determining shear behaviour. It is applicable to thermal insulating products. NOTE The tests described in this International Standard do not determine pure shear behaviour, but measure the effects of applying two opposite parallel forces to the major faces of the test specimen. The test is, however, called "shear" in this text by convention. The application of a force tangentially to the major surface of the test specimen is considered to represent more closely the stresses imposed upon thermal insulation products in many building applications, particularly walls, than other methods of measuring shear performance, e.g. bending tests.