According to the working principle, compaction machinery is divided into static rolling compaction machines, which have a trend of replacing static rolling compaction machines. Impact type, vibration type, and composite action type. The force rolling compaction machine utilizes the gravity of the roller to vibrate the vibrating roller, causing permanent deformation and compaction of the compacted layer. Impact type road rollers with rolling and impact effects. The rolling wheels are divided into: smooth rolling, groove rolling, sheep foot rolling, and tire rolling. The groove roller and sheep foot roller have high unit pressure and thick compaction layer, making them suitable for compaction of roadbeds and embankments. The tire pressure of a tire roller can be adjusted, which can increase or decrease weight. The unit pressure is variable, and the compaction process has a kneading effect, making the compaction layer uniform and dense. It is suitable for compaction of road, square, and other cushion layers. And it does not damage the road surface, suitable for compaction of road, square, and other cushion layers
Classification
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