Roadway Shotcrete Acceptance Standards:

Roadway shotcrete acceptance standards mainly include the following aspects:

Shotcrete Thickness: Shotcrete thickness is a crucial quality indicator for roadway shotcreting and should generally meet design requirements. The thickness should be between 3-5 cm, increasing gradually in layers. During acceptance, a steel ruler or depth gauge should be used for measurement to ensure a 100% pass rate for the shotcrete layer thickness.

Shotcrete Intensity: Shotcrete intensity is one of the important indicators for evaluating shotcrete quality and is generally accepted according to design requirements. Testing the shotcrete intensity determines whether the design requirements have been met. Mechanized equipment should be used for testing during acceptance, and the accuracy of the experimental data should be ensured.

Crack Density: Crack density in the roadway rock mass is one of the important indicators for measuring the effectiveness of roadway shotcreting. During acceptance, the roadway walls should be carefully inspected for cracks. If cracks are found, they should be repaired according to relevant regulations.

Shotcrete Uniformity: Shotcrete uniformity is one of the important indicators for evaluating the effectiveness of roadway shotcreting. It can determine the density and quality status of the shotcrete. During acceptance testing, the thickness of the sprayed grout should be strictly controlled, and the quality of the sprayed grout should be tested using actual measurement data to ensure that it meets the standard requirements.