Sprayed concrete for roadway
A sprayed concrete and roadway technology, applied in the field of building materials, can solve the problems of material brittleness, poor quality control of shotcrete, inability to have high adhesion, cracking prevention and waterproofing at the same time, and achieve the effect of strength and toughness
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Embodiment 1
[0018] This embodiment provides a shotcrete for roadway, including the following raw materials in parts by weight: 80 parts of cement, 40 parts of superfine aggregate, 80 parts of fine sand, 10 parts of fiber, 6 parts of rubber powder, and nano-alumina 7 parts, 3 parts of polyacrylamide, 8 parts of MK-1 reinforcing agent, 1.5 parts of water reducing agent, 0.5 parts of flame retardant, 10 parts of accelerator.
[0019] The particle size of the rubber powder is 40 mesh. The cement is Portland cement. The superfine aggregate is quartz powder. The superfine aggregate is slag fine powder. The quick-setting agent is 782 type quick-setting agent.
Embodiment 2
[0021] This embodiment provides a shotcrete for roadway, including the following raw materials in parts by weight: 100 parts of cement, 60 parts of superfine aggregate, 100 parts of fine sand, 15 parts of fiber, 10 parts of rubber powder, and nano-alumina 8 parts, polyacrylamide 6 parts, MK-1 reinforcing agent 10 parts, water reducer 3 parts, flame retardant 0.5 parts, accelerator 12 parts.
[0022] The particle size of the rubber powder is 60 mesh. The cement is Portland cement. The superfine aggregate is quartz powder. The superfine aggregate is slag fine powder. The quick-setting agent is 782 type quick-setting agent.
[0023] According to "GB-T50081-2002 Standard for Test Methods of Mechanical Properties of Ordinary Concrete", the various technical indicators of the shotcrete made in Test Example 1 and Example 2 are shown in Table 1:
[0024] Table 1
[0025]
[0026] Polyacrylamide can significantly improve the flexural strength, bond strength, flexural toughness ...
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