ABSTRACT
I t i s common to many p a r t s of the d r a f t standard that i t i s r equired to c a r r y out a d d i t i o n a l t e s t s , e.g. concrete t r i a l mixes, depending on the o r i g i n of the b u i l d i n g waste and on the r e s u l t s of a v i s u a l i n s p e c t i o n . T h i s a p p l i e s p a r t i c u l a r l y i f , a f t e r the aggregates have been t e s t e d , there remain any doubts regarding the presence of harmful c o n s t i t u e n t s .
