摘要:
A CAVITATION ELEMENT FOR INDUCING CAVITATION IN, FOR EXAMPLE, A WET CONCRETE MIX. THE ELEMENT HAS A SMOOTH UPSTREAM PROFILE AND A BLUFF DOWNSTREAM PROFILE WITH FORMATIONS ON ITS UPPER SURFACE WHICH INDUCE A CORRUGATED SHAPE TO THE ENVELOPE OF THE CAVITATION IMMEDIATELY DOWNSTREAM OF THE BLUFF PROFILE. AN INLET WITHIN THE ELEMENT COMMUNICATES WITH A NUMBER OF APPERTURES OPENING INTO THE BLUFF PROFILE WHEREBY A JET, OR JETS, OF FLUID OR OTHER ADDITIVE ARE SUPPLIED THROUGH THE APPERTURES INTO CAVITATION INDUCED BY THE BLUFF PROFILE.
摘要:
A PLASTIC CONCRETE OR MORTAR MIX INCLUDING AN INCORPORATED GAS SUCH AS ENTRAINED AIR, AND FROM ONE TO TEN GRAMS OF SHORT FIBRES PER POUND OF CEMENT UNIFORMLY DISTRIBUTED THROUGHOUT THE MIX.