The defect detection of building concrete components is divided into appearance defect detection and internal defect detection. This article will introduce the content and methods of two types of detection respectively
1. Appearance defect detection
During on-site inspection, it is advisable to conduct a complete inspection of the appearance defects of the components within the scope of inspection.
; When the conditions for full inspection are not met, the area where the components were not inspected should be indicated The relevant parameters of the appearance defects of concrete components can be detected according to the following methods according to the defect situation:1. The length of exposed reinforcement can be measured with a steel ruler or tape measure 2. The holes can be directly measured with a steel ruler, and the depth of the holes can be measured with a vernier caliper The position and range of honeycomb and looseness can be measured with a steel ruler or tape measure The position and range of pitted surface, peeling, and sanding can be measured with a steel ruler or tape measure The maximum width of surface cracks can be measured using a dedicated measuring instrument for cracks, and the length of surface cracks can be measured using a steel ruler or tape measure The appearance defects of concrete components should be classified and summarized according to the defect category. The summary results can be expressed in a list or diagram and should reflect the distribution characteristics of appearance defects within the inspected range
2. Internal defect detection
For suspected internal defects or areas, full testing should be carried out. When the conditions for full testing are not met, the following components or parts can be selected for testing according to the agreed sampling principle:
1 Important components or parts Components or parts with severe appearance defects The internal defects of concrete components should be tested using ultrasonic method on both sides. When there is only one side that can be detected, impact echo method and electromagnetic emission method can be used for detection. For areas that are difficult to distinguish, core drilling verification or chiseling verification should be carried out
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China