The concrete materials are heated and stirred, after transportation, vibrating still has a certaintemperature, heat preservation material covered with concrete after pouring around. The hydration heat of this pre heat and cement to make concrete, slow cooling, and gradually hardened in the cooling process, when the temperature dropped to 0 degrees of concrete can be achieved when the frost resisting critical strength or the expected strength.
Storage method has the advantages of simple, economic, energy saving, hardened concrete at low temperatures, the ultimate strength loss, high durability, can obtain the better quality of theproducts. But with the storage method of construction, the strength of slower growth, therefore,should choose the higher strength grade, the hydration of Portland cement, ordinary portland cement or heat of rapid hardening Portland cement. At the same time, the thermal conductivity coefficient is small, cheap and durable insulation materials. Pay attention to moisture andventilation to prevent thermal insulation coating, the components of the edge, the end and theangle should strengthen insulation, at the junction of fresh concrete and hardened concrete, in order to avoid the loss of heat conduction, necessary measures should be taken to local heating
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