1. Model: Loại F và Loại S
2. Type F: Initial setting time must be no less than 3 minutes; final setting time must not exceed 5 minutes; compressive strength >10 MPa at 15 minutes and >15 MPa sau 1 giờ.
3. Type S: Initial setting time must not exceed 10 minutes; final setting time must not exceed 20 minutes; compressive strength >10 MPa at 1 hour, >35 MPa at 24 hours, and >65 MPa sau 28 ngày.
