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A platform for research: civil engineering, architecture and urbanism
Pre-coated steel fiber ultra-high performance concrete
The invention discloses precoated steel fiber ultra-high performance concrete which comprises a concrete base material and precoated steel fibers, the precoated steel fibers are prepared by coating steel fibers with a sizing material, and the sizing material forms an adhesive film layer which is not completely cured and has deformability and cohesive force on the surfaces of the steel fibers; the adhesive layer is coated on the steel fiber before mixing, the steel fiber is mixed with a concrete base material when the adhesive layer is cured to be dry on the surface and has certain adhesive force, plasticity and follow-up bonding capacity, and the adhesive layer on the surface of the steel fiber also has bonding property and certain plasticity, so that the bonding force between the steel fiber and cement paste can be enhanced; the drawing resistance of the steel fiber and the bond-wrapping performance of the steel fiber and the concrete are improved; and in the mixing process of the pre-coated steel fiber and the concrete, the adhesive layer can generate adaptive deformation, and forms mechanical occlusion with any solid particles in the concrete after being cured, so that the binding force with the concrete is increased, and the interface between aggregate and hydrate in the concrete is enhanced.
本发明公开一种预涂层钢纤维超高性能混凝土，包括混凝土基料和预涂层钢纤维，所述预涂层钢纤维由钢纤维上涂布胶料制成，所述胶料在钢纤维表面形成未完全固化且具有变形能力和粘结力的胶膜层；在拌合前的钢纤维上涂布胶层，待胶层固化至表干具有一定附着力和可塑性且具有后续可粘结能力的状态下与混凝土基料拌合，由于钢纤维表面的胶层还具有粘结性和一定可塑性，因此能增强钢纤维和水泥浆体之间的粘结力，提高钢纤维的抗拉拔能力和与混凝土的握裹性能；且预涂层钢纤维与混凝土混合过程中胶层可发生适应性变形，固化后形成与混凝土中任何固体颗粒的机械咬合，增加与混凝土的结合力，增强混凝土中骨料和水化物之间的界面。
Pre-coated steel fiber ultra-high performance concrete
The invention discloses precoated steel fiber ultra-high performance concrete which comprises a concrete base material and precoated steel fibers, the precoated steel fibers are prepared by coating steel fibers with a sizing material, and the sizing material forms an adhesive film layer which is not completely cured and has deformability and cohesive force on the surfaces of the steel fibers; the adhesive layer is coated on the steel fiber before mixing, the steel fiber is mixed with a concrete base material when the adhesive layer is cured to be dry on the surface and has certain adhesive force, plasticity and follow-up bonding capacity, and the adhesive layer on the surface of the steel fiber also has bonding property and certain plasticity, so that the bonding force between the steel fiber and cement paste can be enhanced; the drawing resistance of the steel fiber and the bond-wrapping performance of the steel fiber and the concrete are improved; and in the mixing process of the pre-coated steel fiber and the concrete, the adhesive layer can generate adaptive deformation, and forms mechanical occlusion with any solid particles in the concrete after being cured, so that the binding force with the concrete is increased, and the interface between aggregate and hydrate in the concrete is enhanced.
本发明公开一种预涂层钢纤维超高性能混凝土，包括混凝土基料和预涂层钢纤维，所述预涂层钢纤维由钢纤维上涂布胶料制成，所述胶料在钢纤维表面形成未完全固化且具有变形能力和粘结力的胶膜层；在拌合前的钢纤维上涂布胶层，待胶层固化至表干具有一定附着力和可塑性且具有后续可粘结能力的状态下与混凝土基料拌合，由于钢纤维表面的胶层还具有粘结性和一定可塑性，因此能增强钢纤维和水泥浆体之间的粘结力，提高钢纤维的抗拉拔能力和与混凝土的握裹性能；且预涂层钢纤维与混凝土混合过程中胶层可发生适应性变形，固化后形成与混凝土中任何固体颗粒的机械咬合，增加与混凝土的结合力，增强混凝土中骨料和水化物之间的界面。
Pre-coated steel fiber ultra-high performance concrete
一种预涂层钢纤维超高性能混凝土
GU JIANYI (author) / LIU HEQING (author) / NIE QIXIA (author) / TANG YU (author) / RU NAN (author)
2024-10-11
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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