Concrete Saike structure with reinforced umbrella skeleton and construction method of ground structure
A technology of concrete cladding and reinforced support, which is applied in the direction of pavement, pavement details, roads and other directions paved with prefabricated blocks, can solve the problems of difficult leveling of undulating ground, poor wear resistance and anti-skid resistance, and reduced work efficiency, etc. The effect of saving support material, improving compressive and tensile properties, and improving work efficiency
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preparation example 1
[0051] The composition of the concrete layer of this preparation example is 120 parts of Portland cement, 300 parts of crushed stone, 180 parts of sand, 10 parts of silica fume, 4 parts of polycarboxylate superplasticizer (Shanghai hate metallurgical industry YZ8020), 4 parts of quick-setting agent 20 parts of fiber, 50 parts of water.
[0052] Among them, the quick-setting agent is composed of the following raw materials: 30 parts of polyaluminum sulfate, 10 parts of triethanolamine, 1 part of polyether alcohol amine (Beijing Juwei), 2 parts of polyether amide, 10 parts of silicon dioxide, and 2 parts of sodium carbonate , 1 part of adsorbent (Xinghuaxing Building Materials Concrete Adsorbent), 35 parts of water;
[0053] The structural formula of polyetheramide is as follows: M is the polyether chain of ethylene oxide and propylene oxide, R 1 for CH 3 , R 2 for CH 2 .
[0054]
preparation example 2
[0056] In the composition of the concrete layer of this preparation example, the quick-setting agent is 6 parts, and the other compositions and the specific components of the quick-setting agent are the same as those of the preparation example 1.
preparation example 3
[0058] The quick-setting agent of the concrete layer in this preparation example is 5 parts of polyetheramide, and the other compositions and the specific components of the quick-setting agent are the same as those of the preparation example 1.
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