Visual inspection+? feel
The appearance quality of concrete guardrail should be detected by visual inspection and hand feeling. Through observation and touch, the quality of the guardrail can be preliminarily judged.
precision measurement
On the basis of visual inspection and hand feeling, it is necessary to use tools such as straightedge or caliper for accurate measurement. This can more accurately judge whether the size and shape of the guardrail meet the requirements.
Pay attention to the representativeness and uniformity of sampling.
The sampling process is also very important when testing the appearance quality of concrete guardrail. Attention should be paid to the representativeness and uniformity of sampling to ensure that the test results truly reflect the overall quality of the guardrail.