UNE-EN ISO 844:2015

PROLOGO
1 OBJETO Y CAMPO DE APLICACION
2 NORMAS PARA CONSULTA
3 TÉRMINOS Y DEFINICIONES
4 SIMBOLOS Y ABREVIATURAS
5 PRINCIPIO
6 APARATOS
7 PROBETAS
8 PROCEDIMIENTO
9 EXPRESION DE RESULTADOS
10 PRECISION
11 INFORME DE ENSAYO

This International Standard specifies a method of determining:

a)the compressive strength and corresponding relative deformation,

or

b)the compressive stress at 10 % relative deformation,

and

c)when desired, the compressive modulus of rigid cellular plastics.

There are two procedures:

Procedure A employs crosshead motion for determination of compressive properties. Procedure A is intended to be used when compressive stress at 10 % relative deformation has to be determined.

Procedure B employs strain measuring devices mounted on the specimen (contact extensometer) or similar device which measures directly sample deformation. Procedure B is intended to be used when compressive modulus has to be determined.

NOTECompressive strength (at maximum load) can be determined either with Procedure A and B.