The Crosshole Sonic Logging (CSL) Measurement System to Measure the Quality of Physical Model of Bored Pile

6th Asian Physics Symposium

Sibit, Denniswara^1 ; Handayani, Gunawan^1

Laboratory of Earth Physics, Bandung Institute of Technology, Indonesia^1

关键词: Bored piles;    Concrete materials;    Concrete model;    Cross-hole sonic logging;    Measurement system;    Physical model;    Rubber material;    Wave forms;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/739/1/012051/pdf
DOI  :  10.1088/1742-6596/739/1/012051

来源: IOP

【 摘 要 】

The crosshole sonic logging measurement to measure the quality of bored piles is presented in this paper. The development of crosshole measurement system on physical bored pile modeling was carried out. The diameter of the concrete model was around 1 m and the height of the model was 1 m. In the model two holes were constructed to simulate the crosshole measurement system in the field. The two holes were filled with water and then two transducers were lowered in the holes. The transducers were built from audio speaker and microphone and they were sealed by rubber material so that the transducers were water proof. The speaker transducer acted as transmitter and the microphone transducer acted as receiver. The acoustic wave transmitted from the speaker penetrated in the concrete material and received by receiver. By analyzing the waveform arrived at the receiver by means of datalogger we determine the condition the concrete pile i.e. whether there were cavities in the concrete etc.