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在检测整浇钢筋混凝土时,除需检测其按设计龄期的强度外,还要检测其中间龄期的强度.在此情况下,可以通过试验立方试块试验强度,或采用非破损检验方法.按照国标18105—86,采用非破损检验时,着重选用预埋件的拔出法.在顿河工业建筑科研设计研究院,钢结构科学研究院和混凝土研究院进行的大量科学研究,能确定对拔出锚固装置法的影响因素,骨料的大小以及是否经过热加工.这些因素严重影响着国标22690—88的采用.
In the testing of cast-in-place reinforced concrete, in addition to testing its strength according to the designed age, it is also necessary to measure the strength of the middle age. In this case, the test strength of the cubic test block can be passed, or the non-destructive inspection method can be used. In accordance with the national standard 18105-86, when using non-destructive inspections, emphasis is placed on the method of extraction of embedded parts. A large number of scientific studies conducted by the Institute of Scientific Research and Design, the Steel Structure Research Institute and the Concrete Research Institute of Dunhe Industrial Building can be determined. The factors affecting the method of pulling out the anchoring device, the size of the aggregate, and whether or not it has undergone thermal processing, these factors seriously affect the adoption of the national standard 22690-88.