Experiences With Air-Entraining Cement in Central-Mixed Concrete

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Title: Experiences With Air-Entraining Cement in Central-Mixed Concrete

Author(s): Alexander Foster, Jr.

Publication: Journal Proceedings

Volume: 42

Issue: 6

Appears on pages(s): 625-628

Keywords: none

Date: 6/1/1946

Abstract:
Reports studies by Warner Co. with central-mixed concrete using air-entraining cement over 2 1/2 -years. Following experimental work, more than 30,000 cu y of air-entrained concrete, chiefly of low-slump, plastic mix were used for pavements and other highway work. Studies included effect of truck-mixer or agitator action, closed drum and open top equipment, on hauls up to 45 min. No significant differences in slump or air entrainment (2 1/2 to 3 percent) were found. The chief problem is in added storage requirements to meet specifications permitting no admixtures and those demanding air entrainment.