Polyethylacrylate-steel fiber cement concrete and its preparation method
A polyethyl acrylate, cement concrete technology, applied in the field of concrete, can solve problems such as building collapse and concrete being difficult to resist earthquakes, etc.
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[0013] The invention provides a kind of preparation method of polyethylacrylate-steel fiber cement concrete, described method comprises:
[0014] 1) The process of laying steel fibers into steel fiber mesh cloth;
[0015] 2) The process of mixing cement, sand, fly ash, polyethyl acrylate and water to prepare concrete slurry;
[0016] 3) Spray the concrete slurry into the mold and then lay the steel fiber mesh on the concrete, then spray the concrete slurry on the steel fiber mesh and lay the steel fiber mesh on top of the concrete slurry to replicate into concrete The process of the first product;
[0017] 4) The process of heating the primary concrete to obtain poly(ethyl acrylate-steel fiber cement concrete).
[0018] In the present invention, the polyethyl acrylate can be any polyethyl acrylate known in the art, considering the cost and the mechanical strength of the prepared concrete, preferably, the polyethyl acrylate The weight average molecular weight is 3000-5000. ...
Embodiment 1
[0030] 1) Lay steel fibers with a diameter of 3 mm into steel fiber mesh cloth, wherein the radial density of the steel fiber mesh cloth is 4 fibers / cm, and the weft density is 2 fibers / cm;
[0031] 2) 100kg of No. 42.5 cement, 250kg of sand with a particle diameter of 8mm, 160 of fly ash, 25kg of polyethyl acrylate with a weight average molecular weight of 4000 and water are mixed to prepare concrete slurry;
[0032] 3) Spray the concrete slurry into the mold and then lay the steel fiber mesh on the concrete, then spray the concrete slurry on the steel fiber mesh and lay the steel fiber mesh on top of the concrete slurry to replicate into concrete The first product, wherein the distance between two adjacent steel fiber mesh cloths is 13cm;
[0033] 4) The process of heating the primary concrete product at 90°C for 2.5 hours to obtain polyethylacrylate-steel fiber cement concrete.
[0034] The initial crack tensile strength of the concrete is 5.2N / mm 2 , the ultimate tensile...
Embodiment 2
[0036] 1) Lay steel fibers with a diameter of 1 mm into steel fiber mesh cloth, wherein the radial density of the steel fiber mesh cloth is 4 wires / cm, and the weft density is 2 wires / cm;
[0037] 2) 100kg of No. 42.5 cement, 200kg of sand with a particle diameter of 5mm, 150 of fly ash, 20kg of polyethyl acrylate with a weight average molecular weight of 3000 and water are mixed to prepare concrete slurry;
[0038] 3) Spray the concrete slurry into the mold and then lay the steel fiber mesh on the concrete, then spray the concrete slurry on the steel fiber mesh and lay the steel fiber mesh on top of the concrete slurry to replicate into concrete Initial product, wherein the distance between two adjacent steel fiber mesh cloths is 10cm;
[0039] 4) The process of heating the primary concrete product at 80°C for 2 hours to obtain polyethylacrylate-steel fiber cement concrete.
[0040] The initial crack tensile strength of the concrete is 5.1N / mm 2 , the ultimate tensile stren...
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Abstract
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