Title:
Sand Grading Influence on Air Entrainment in Concrete
Author(s):
M. A. Craven
Publication:
Journal Proceedings
Volume:
45
Issue:
11
Appears on pages(s):
205-215
Keywords:
no keywords
DOI:
10.14359/12141
Date:
11/1/1948
Abstract:
Four series of mixes with various air-entraining agents, cement factors, amd sand grading and content were prepared in order to observe sand grading effect on concrete. Graphic record is presnted of air content and W/C plotted against finess modulus of sand; flow and compressive strength plotted against finess modulus of sand; and air content plotted against percent of No.30-No.50 sand and total sand percentage. Generally the percentage of air entrained in concrete increased with decrease in fineness modulus of sand. Quantity of air appears to be a function of the quantity of No.30-No.50 sand. Effect of grading and quantity of sand on other properties of fresh and hardened concrete is noted.