Detection Technology of Foamed Mixture Lightweight Soil Embankment Based on Ultrasonic Wave Transmission Method

Table 1

Performances of cement used in the laboratory test.

No.	Index		Compulsory requirement	Measured results
1	Specific surface area (m^2/kg)		≥400	348
2	Water requirement of normal consistency (%)		—	28.8
3	Stability		Boiling method qualified	Qualified
4	Setting time (min)	Initial	≤55	40
		Final	≤590	300
5	Flexural strength (MPa)	3 days	≥3.5	4.8
		28 days	≥6.5	8.7
6	Compressive strength (MPa)	3 days	≥17.0	23.4
		28 days	≥42.5	49.5