Research on the strength growth characteristics of prefabricated T-beam concrete in the Hexi region of Gansu Province
In response to the slow growth of precast T-beam concrete strength in the Hexi region of Gansu Province,the rebound values of 21 T-beams of different ages in a certain project were collected using measured data,and the overall characteristics of the rebound values of precast T-beam concrete were analyzed.In Excel software,a correlation function was used to analyze the correlation between the rebound values at different ages and six environmental temperature influencing factors.It was found that the rebound strength of prefabricated T-beams at 7d,21d,and 28d was significantly affected by environmental temperature,especially the lowest temperature;The daily temperature difference,the amplitude of daily temperature difference variation,and the amplitude of min-imum and maximum temperature variation have little effect on the strength of prefabricated T-beams.The research results can provide guiding suggestions for the concrete pouring and maintenance construction process of prefabrica-ted T beams in the Hexi region of Gansu,and create conditions for the smooth installation of prefabricated T beams.
T-beamHexi regionrebound strengthtemperaturedaily temperature difference
万方数据
维普
