The standard curing condition of lime-fly ash macadam specimen is: after demoulding and weighing, immediately put the specimen into a sealed moisture box or curing room with a relative humidity of 95%, and wrap it with plastic film or seal it with wax for moisture curing: the standard temperature is 20℃ 2℃, and the specimen is soaked in water on the last day (the seventh day) of the curing period, the water depth should be about 2.5cm above the specimen, and the soaking temperature should be the same. Before soaking, the mass of the specimen should be weighed again, and the mass loss of the specimen during curing should not exceed 10g. If it exceeds this range, the specimen will be invalid.