The newly built cement road will take about 28 days to open to traffic. If it is early strength cement, it is the best. The strength of ordinary cement can reach 80%-85% in 2 days. The curing period at room temperature takes 28 days, and it needs to be watered and kept moist. If the temperature is high, you can spend less time.

The formation of concrete is a slow solidification process. It takes 28 days to reach the design strength from the initial setting to the final setting, in which continuous curing is required, especially 7 days after the initial setting, so that the concrete must maintain enough moisture.

Adding 1.5 ~ 2.0% steel fiber with a length of 25 ~ 60mm and a diameter of 0.25 ~ 1mm into concrete can improve the ultimate compressive strength and ultimate flexural tensile strength by more than 50% compared with plain concrete.

Extended data:

Cement characteristics:

Advantages:

(1) high strength.

(2) Good stability.

(3) Good durability.

(4) Low maintenance cost.

(5) Good skid resistance.

(6) It is good for driving at night.

Disadvantages:

(1) There is a great demand for cement and water. Building a 20 cm thick and 7 m wide cement concrete pavement will consume 400~500 tons of cement and about 250 tons of water per kilometer.

(2) There are many seams.

(3) It opened to traffic late.

(4) Maintenance and repair difficulties.

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