A prefabricated ultra-high performance concrete steel bridge deck pavement structure and its preparation method
An ultra-high performance, concrete technology, used in bridges, bridge parts, bridge construction, etc., can solve problems such as difficult flatness control, rivet welding damage, etc.
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[0059] The prefabricated ultra-high performance concrete steel bridge deck pavement structure and preparation method in the embodiment of the present invention include the following steps:
[0060] S1. Use threaded ribbed steel bars with a diameter of 8-10mm to make steel mesh sheets, set the horizontal and vertical steel bar spacing to 50-100mm, place them in a fixed mold to form high-density fiber concrete prefabricated panels, and control the thickness of the steel mesh protective layer by welding trapezoidal steel bars. ~20mm;
[0061] S2. Weigh 25-30 parts of Portland cement, 6-10 parts of silica fume, 8-12 parts of quartz powder, 30-35 parts of quartz sand with particle size ≤ 1mm, 2-4 parts of composite chopped steel fiber and 4-8 parts of basalt fiber, 8-12 parts of water, 1-2 parts of polycarboxylate high-efficiency water reducer, use a horizontal mixer to stir the dry mixture at a rate of 25-35 rpm for 1 min, and then add basalt fiber and steel fiber, then add water...
Embodiment 1
[0072] A prefabricated ultra-high performance concrete steel bridge deck pavement structure and a preparation method thereof, comprising the following steps:
[0073] S1. Use threaded ribbed steel bars with a diameter of 8mm to make steel mesh sheets, set the horizontal and vertical steel bar spacing to 50mm, place them in a fixed mold to form high-density fiber concrete prefabricated panels, and control the thickness of the steel mesh protective layer by welding trapezoidal steel bars to 20mm;
[0074] S2. Weigh 25 parts of Portland cement, 8 parts of silica fume, 12 parts of quartz powder, 35 parts of quartz sand with particle size ≤ 1mm, 4 parts of composite chopped steel fiber, 6 parts of basalt fiber, 8 parts of water, Carboxylic acid high-efficiency water reducer 2 parts, use a horizontal mixer to stir the dry mixture at a rate of 35 rpm for 1 minute, add basalt fiber and steel fiber in turn, then add water reducer and mixing water, and wet mix for 8 minutes to prepare ne...
Embodiment 2
[0090] A prefabricated ultra-high performance concrete steel bridge deck pavement structure and a preparation method thereof, comprising the following steps:
[0091] S1. Use threaded ribbed steel bars with a diameter of 10mm to make steel mesh sheets, set the horizontal and vertical steel bar spacing to 75mm, place them in a fixed mold to form high-density fiber concrete prefabricated panels, and control the thickness of the steel mesh protective layer by welding trapezoidal steel bars to 15mm;
[0092] S2. Weigh 27 parts of Portland cement, 10 parts of silica fume, 10 parts of quartz powder, 33 parts of quartz sand with particle size ≤ 1mm, 3 parts of composite chopped steel fiber, 5 parts of basalt fiber, 10 parts of water, and Carboxylic acid high-efficiency water reducer 2 parts, use a horizontal mixer to stir the dry mixture at a rate of 35 rpm for 1 minute, add basalt fiber and steel fiber in turn, then add water reducer and mixing water, and wet mix for 6 minutes to pre...
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Abstract
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