Optimum Design and Performance of Porous Concrete for Heavy-Load Traffic Pavement in Cold and Heavy Rainfall Region of NE China

Table 2

Summary of test results of cement physical indexes.

Test items		National standard	Measured value
Fineness (%)		≤10.0	0.4
Specific surface area (m^2/kg)		≥300	379
Setting time (min)	Initial setting	≥45	204
	Final setting	≤600	261
Stability		Qualified	Qualified
3 d flexural strength (MPa)		≥3.5	5.0
3 d compressive strength (MPa)		≥15.0	23.4