Case 1:
No. S2 pile of a certain project, the pile length is 23.4m, the pile diameter is 1,000mm, the design grade of concrete strength is C30, the concrete is sandwiched with mud within 5.0m-6.20m and within 13.20m-13.50m, the concretes are hinged well in other positions, and the core samples are in column shape. The surface is smooth, and the aggregates are distributed evenly. In accordance with the Technical Specification for Testing Method with Video Monitor through the Hole of Foundation Pile CECS 253:2009 of China Association for Engineering Construction Standardization, the borehole imaging test is conducted on this pile.
Field picture of the project
Test data and results
After coring, wash the hole with clean water, and when the water in the hole is clear, conduct the test and the test collection results are as follows:
Through the test in coring method it can be judged according to the specification that the integrity of No. S2 pile is Category II. According to the above image display, no serious defect is found within 5.00m-6.20m, the concrete around the hole wall within 13.20m-13.50m is uniform, continuous and intact and is glued well, and the pile body in other position is normal. Therefore, the integrity of this pile body can be judged to be Class I.
Case 2:
On the construction appraisal scene of a certain single building in Chengdu, Sichuan, relevant foundation piles all are below the floor. This building cracks due to the earthquake, the crack appears on the fourth floor of the basement, which is also the bottom floor of the this building. The test scheme is to open this floor, and after the foundation pile position is located, drill cores on the pile surface, and conduct borehole television test.
Take a typical pile among them as an example. This pile diameter is 1100mm, the pile length is 16.8m, and it is located at the center of the whole building. The coring hole is 200mm to the north of the pile center and the borehole diameter is 90mm. The data describe that this foundation pile is C30 concrete, rotary digging pile and the construction technology is underwater casting.
Field pictures of the project
RSM-DCTD Borehole TV Tester of Wuhan SINOROCK is used in this test, and borehole imaging test is conducted for this pile in accordance with the Technical Specification for Testing Method with Video Monitor through the Hole of Foundation Pile CECS 253:2009 of China Association for Engineering Construction Standardization.
It is found in the test process that a large amount of suspected aggregates do not meet the requirements, and a large amount of cracks and gaps are found. In combination with the incompleteness of lots of coring samples of this pile, this pile is judged to be Class IV.
Case 3:
Customer Name: Panyu District Engineering Quality Test Center
Project information: Cisco Smart City Housing Project
Field pictures of the project
Effect drawing generated by the analysis software
Exported report effect (the collection effect is affected due to the sands falling in some positions)
