Self-filling concrete for railway tunnel lining
A concrete and self-filling technology, which is applied in the field of railway tunnel lining structures and self-filling concrete, can solve problems such as insufficient durability and lining quality defects, and achieve the effects of improving robustness, reducing cracking risks, and reducing segregation
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[0033] Example 1: The design strength of self-filling concrete for tunnel lining is C30, and the concrete mix ratio used is shown in Table 1. The main properties of self-filling concrete for tunnel lining measured in laboratory are shown in Table 2. Field application and later inspection of self-filling concrete for tunnel lining The situation is shown in Table 3.
[0034] Gelling component Viscosity adjusting component aggregate Water reducing component Mixed water 3601.518774.0150
[0035] project Slump extension Vibration expansion Air content Filling height difference of vibration U-shaped instrument Penetration depth Initial setting time Final setting time 56d compressive strength 28d electric flux performance 530mm580m 2.5% 40mm 5mm 8:50 10:45 38.5 MPa940C
[0036] Table 3 Field application of self-filling concrete for C30 tunnel lining and later inspection
[0037]
Example Embodiment
[0038] Example 2: The design strength of self-filling concrete for tunnel lining is C40, the concrete mix ratio used is shown in Table 4, the main properties of self-filling concrete for tunnel lining measured in the laboratory are shown in Table 5, the field application of self-filling concrete for tunnel lining and later inspection The situation is shown in Table 6.
[0039] Gelling component Viscosity adjusting component aggregate Water reducing component Mixed water 4501.017964.5156
[0040] project Slump extension Vibration expansion Air content Filling height difference of vibration U-shaped instrument Penetration depth Initial setting time Final setting time 56d compressive strength Impermeability grade 28d electric flux performance 520mm580m 3.1% 30mm 4mm 9:10 11:10 50.7 MPaP12820C
[0041] Table 6 Field application of self-filling concrete for C40 tunnel lining and later inspection
[0042]
Example Embodiment
[0043] Example 3: The design strength of self-filling concrete for tunnel lining is C50, the concrete mix ratio used is shown in Table 7, and the main properties of self-filling concrete for tunnel lining measured in the laboratory are shown in Table 8. Field application and later testing of self-filling concrete for tunnel lining The situation is shown in Table 9.
[0044] Gelling component Viscosity adjusting component Anti-cracking component Hydration temperature rise inhibitor aggregate Water reducing component Mixed water 4600.7438716666.5150
[0045] Remarks: The composition of anti-cracking component is 40kg / m 3 Expansion agent and 3 kg / m 3 Fiber composition.
[0046] project Slump extension Vibration expansion Air content Filling height difference of vibration U-shaped instrument Penetration depth Initial setting time Final setting time 56d compressive strength Impermeability grade 28d electric flux performance 540mm620m 3.5% 20mm 4mm 9:30 10:50 58.4 MPa P12730C
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