1 ? The temperature control level of standard curing room is divided into grade one and grade two. The temperature control range of the primary standard curing room is 20℃ 2℃, and that of the secondary standard curing room is 20℃ 5℃. 2 ? The temperature of standard curing room should be controlled automatically, and the error is not more than 0.5℃. 3 ? The relative humidity of standard curing room should be controlled above 95%. 4 ? The standard curing room should be a fog room, and the surface of the specimen is in a wet state, so it is not allowed to be directly painted with water. 5 ? The relative humidity of standard curing room should be controlled automatically. 6 The thermal insulation performance of standard curing room shall meet the following requirements, that is, in case of power failure, the indoor temperature change of Grade I curing room within 5 hours shall not exceed 2℃, and that of Grade II curing room shall not exceed 5℃. 7 ? If the power failure time exceeds 5h, measures should be taken to ensure that the standard curing indoor temperature meets the requirements. 8. The door of the standard curing room should be clearly marked with a warning sign of electrical safety. 9 The standard curing room shall meet the safe lighting conditions for transporting, placing and identifying test pieces. 10 ? Standard maintenance indoor lighting should use safe voltage, lamps and lanterns should have waterproof device.