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Ultrahigh-toughness self-curing cement-based product and preparation method thereof
The invention discloses an ultrahigh-toughness self-curing cement-based product and a preparation method thereof. The cement-based product comprises cement, sands, silica fume, metakaolin, ground calcium carbonate powder, porous basalt, fibers, carbon nanotubes, a water reducing agent, a defoaming agent and water, wherein the particle size of the sands is 70-100 meshes; the particle size of the metakaolin is 1000-1500 meshes; the granularity of the ground calcium carbonate powder is 100-200 meshes; and the particle size of the porous basalt is 80-100 meshes. The concrete concretely comprises,by weight, 20-40 parts of the cement, 40-60 parts of the sands, 20-30 parts of the silica fume, 5-10 parts of the metakaolin, 5-10 parts of the ground calcium carbonate powder, 5-10 parts of the porous basalt, 1.5-3 parts of the fibers, 2-3 parts of the carbon nanotubes, 0.5-2 parts of the water reducing agent, 0.1-0.5 part of the defoaming agent and 7-12 parts of water. The porous basalt is added, the purpose of natural curing is achieved through storage and release of moisture by pores, distribution and interface combination of different fibers in the cement-based material are achieved, theeffect on different sizes of products is enhanced through combination of macroscopic fibers and carbon nanotubes in a microcosmic state, and the brittle cement-based material achieves ultrahigh toughness.
本发明公开了一种超高韧性自养护水泥基制品及其制备方法，水泥基制品成分包括水泥、沙、微硅粉、偏高岭土、重钙粉、多孔玄武岩、纤维、碳纳米管、减水剂、消泡剂和水，沙的粒度为70‑100目，偏高岭土的粒度为1000‑1500目，重钙粉的粒度为100‑200目，多孔玄武岩的粒度为80‑100目，各成分按重量份数计为水泥20‑40份、沙40‑60份、微硅粉20‑30份、偏高岭土5‑10份、重钙粉5‑10份、多孔玄武岩5‑10份、纤维1.5‑3份、碳纳米管2‑3份、减水剂0.5‑2份、消泡剂0.1‑0.5和水7‑12份。本发明通过加入多孔玄武岩，利用孔隙对水分的储存与释放，达到自然养护目的，不同纤维在水泥基材料中的分布及界面结合，通过宏观纤维与微观状态下碳纳米管的结合对产品不同尺寸效应增强，使脆性水泥基材料达到超高韧性。
Ultrahigh-toughness self-curing cement-based product and preparation method thereof
The invention discloses an ultrahigh-toughness self-curing cement-based product and a preparation method thereof. The cement-based product comprises cement, sands, silica fume, metakaolin, ground calcium carbonate powder, porous basalt, fibers, carbon nanotubes, a water reducing agent, a defoaming agent and water, wherein the particle size of the sands is 70-100 meshes; the particle size of the metakaolin is 1000-1500 meshes; the granularity of the ground calcium carbonate powder is 100-200 meshes; and the particle size of the porous basalt is 80-100 meshes. The concrete concretely comprises,by weight, 20-40 parts of the cement, 40-60 parts of the sands, 20-30 parts of the silica fume, 5-10 parts of the metakaolin, 5-10 parts of the ground calcium carbonate powder, 5-10 parts of the porous basalt, 1.5-3 parts of the fibers, 2-3 parts of the carbon nanotubes, 0.5-2 parts of the water reducing agent, 0.1-0.5 part of the defoaming agent and 7-12 parts of water. The porous basalt is added, the purpose of natural curing is achieved through storage and release of moisture by pores, distribution and interface combination of different fibers in the cement-based material are achieved, theeffect on different sizes of products is enhanced through combination of macroscopic fibers and carbon nanotubes in a microcosmic state, and the brittle cement-based material achieves ultrahigh toughness.
本发明公开了一种超高韧性自养护水泥基制品及其制备方法，水泥基制品成分包括水泥、沙、微硅粉、偏高岭土、重钙粉、多孔玄武岩、纤维、碳纳米管、减水剂、消泡剂和水，沙的粒度为70‑100目，偏高岭土的粒度为1000‑1500目，重钙粉的粒度为100‑200目，多孔玄武岩的粒度为80‑100目，各成分按重量份数计为水泥20‑40份、沙40‑60份、微硅粉20‑30份、偏高岭土5‑10份、重钙粉5‑10份、多孔玄武岩5‑10份、纤维1.5‑3份、碳纳米管2‑3份、减水剂0.5‑2份、消泡剂0.1‑0.5和水7‑12份。本发明通过加入多孔玄武岩，利用孔隙对水分的储存与释放，达到自然养护目的，不同纤维在水泥基材料中的分布及界面结合，通过宏观纤维与微观状态下碳纳米管的结合对产品不同尺寸效应增强，使脆性水泥基材料达到超高韧性。
Ultrahigh-toughness self-curing cement-based product and preparation method thereof
一种超高韧性自养护水泥基制品及其制备方法
LIU XIAOBIN (author)
2020-10-20
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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