Title:
A Method For Determining The Air content Of Freshly Mixed Mortars And Concretes
Author(s):
J. C. Pearson and H. G. Collins
Publication:
Journal Proceedings
Volume:
32
Issue:
1
Appears on pages(s):
298-308
Keywords:
none
DOI:
10.14359/8383
Date:
1/1/1936
Abstract:
This method involves the use of a pycnometer, or weighing I4 in high of made of 5 in. diameter brass pipe, in which a IO to I5 lb sample of concrete is accurately weighed and its absolute volume accurately determined. The difference between the absolute volume and the bulk volume mined in the usual weight-per-unit-volume operation, gives the volume of entrained air. Calibrated weights and a sensitive capacity are required.balance of fairly large