众所周知,人造轻骨料膨胀必须同时具备两个条件:一是高温下物料形成适宜粘度的液相;二是内部产生足量的气体。精确测定轻骨料膨胀气体,是研究其膨胀过程和膨胀机理的关键环节,可以为在生产上选择膨胀剂,改善以至控制其膨胀性能提供依据。由于试样的膨胀气体是在高温下产生的,其量甚微,有效地 As we all know, the expansion of man-made lightweight aggregate must have two conditions at the same time: one is that the material forms a liquid phase with a suitable viscosity at high temperature, and the other is that a sufficient amount of gas is generated internally. The accurate determination of the light-bulk-expanded gas is a key step in the study of the expansion process and the expansion mechanism. It can provide a basis for selecting a swelling agent in production and improving or even controlling its swelling properties. Because the sample’s expanding gas is produced at high temperature, its amount is minimal, effectively