3D printing cement-based material and preparation method thereof
A cement-based material, 3D printing technology, applied in the field of building materials, can solve the problems of poor extrusion performance and buildability, affecting the connection performance between printing layers and layers, hidden dangers in construction safety, etc., to improve work performance, excellent buildability Good performance and construction performance
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Embodiment 1
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[0048] Character alignment preparation method: Weigh various raw materials according to the formula, and add cement (P.II52.5R Portland cement), active admixture (ultrafine slag powder), water reducing agent (polycarboxylic acid reducing Water agent), early strength agent (calcium formate), coagulant (sodium citrate), expansion agent (UEA expansion agent), binder (re-dispersible latex powder), air-entraining agent (saponin), plastic preservation Mixing agent (carboxymethyl cellulose), starch ether and fiber (polypropylene fiber) thoroughly to obtain a powdered gelling material, which is packaged to form a product.
[0049] During on-site construction, weigh the fine aggregate (medium sand with a fineness modulus of 2.5) and coarse aggregate (the crushed stone with a smaller particle size of 10mm) into a special mixer and mix it with the powdery cementitious material in proportion, and mix according to 1000kg Add 110kg of water to the material and mix evenly to p...
Embodiment 2
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[0054] Preparation method: Weigh various raw materials according to the formula, and sequentially add cement (PO 42.5 ordinary cement), active admixtures (fine slag powder, fly ash), and water reducing agent (naphthalene water reducing agent) into the mixer, early strength Agent (sodium metasilicate), coagulant (sodium citrate), expansion agent (ZY concrete expansion agent), binder (re-dispersible latex powder), air-entraining agent (sodium lauryl sulfate), protector Plasticizer (lignocellulose), water repellent (calcium stearate), starch ether, and fiber (basalt fiber) are fully mixed and packaged to form a product.
[0055] During on-site construction, weigh the fine aggregate (10-60 mesh quartz sand) and coarse aggregate (grained stone with a particle size of less than 10mm) into a special mixer and mix it with the powdered cementing material according to the proportion, and add it to the 1000kg mixture Stir 120kg of water evenly to make a printing concrete m...
Embodiment 3
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[0060] Preparation method: Weigh various raw materials according to the formula, add cement (P.II52.5R Portland cement), active admixtures (ultrafine slag powder, silica fume), and water reducer (polycarboxylic acid Water reducing agent), early strength agent (sodium aluminate), expansion agent (UEA expansion agent, quicklime), binder (re-dispersible latex powder), air-entraining agent (saponin), plasticizer (methyl hydroxyl Propyl cellulose ether), water repellent (calcium stearate), starch ether, and fiber (polypropylene fiber) are fully stirred evenly to obtain a powdered gelling material, which is packaged to form a product.
[0061] During on-site construction, weigh the fine aggregate (medium sand with a fineness modulus of 2.5) and coarse aggregate (the crushed stone with a smaller particle size of 10mm) into a special mixer and mix it with the powdery cementitious material in proportion, and mix according to 1000kg Add 105kg of water to the material and ...
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