Effect of Atmospheric Pressure on Performance of AEA and Air Entraining Concrete

Table 6

Compressive strength of concrete formed under different air pressures.

Sample	Atmospheric pressure	Dosage of AEA (%)	Air content (%)	Compressive strength (MPa)
				7 days	28 days	90 days	180 days
WH	Tibet, 65.9 kPa	0.04	3.6	15.9	27.2	34.3	38.9
XZ	Hubei, 101.1 kPa	0.04	5.1	14.7	26.5	34.3	39.2