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Ultrahigh-toughness concrete and preparation method thereof
The invention belongs to the technical field of concrete, and particularly relates to ultrahigh-toughness concrete and a preparation method thereof. The concrete is prepared from the following raw materials in parts by weight: cement, silica fume, aggregate, fibers, a water reducing agent and water, wherein the fibers are a mixture of modified polypropylene fibers and steel fibers; the modified polypropylene fibers are a mixture composed of silicon dioxide nano hollow sphere modified polypropylene crude fibers and silicon dioxide nano hollow sphere modified polypropylene fine fibers accordingto a mass ratio of 3: (1-2), the diameter of the modified polypropylene crude fiber is 0.10-0.15 mm, the alkali resistance is 100%, the diameter of the modified polypropylene fine fiber is 0.01-0.05 mm, the alkali resistance is 100%, the steel fibers are composed of coarse steel fibers and fine steel fibers according to the mass ratio of 1: (0.2-1), and the aggregate is composed of coarse aggregate and fine aggregate. The ultrahigh-toughness concrete has the advantages of high tensile strength, high compression resistance, relatively few proportioning components and low production cost; the preparation method is simple, easy to operate and suitable for large-scale production.
本发明属于混凝土技术领域，具体涉及一种超高韧性混凝土及其制备方法。包括如下重量份原料：水泥、微硅粉、骨料、纤维、减水剂以及水，所述纤维为改性聚丙烯纤维和钢纤维组成的混合物，所述改性聚丙烯纤维为二氧化硅纳米空心球改性聚丙烯粗纤维和二氧化硅纳米空心球改性聚丙烯细纤维以质量比为3：(1‑2)组成的混合物，所述改性聚丙烯粗纤维的直径为0.10‑0.15mm，耐碱性为100％，所述改性聚丙烯细纤维的直径为0.01‑0.05mm，耐碱性为100％，所述钢纤维由粗钢纤维和细钢纤维以质量比为1：(0.2‑1)组成，所述骨料由粗骨料和细骨料组成。本发明公开的超高韧性混凝土具有高抗拉，高抗压性能，且配比成份相对少，生产成本低；本发明公开的制备方法简单易操作，适合大规模生产。
Ultrahigh-toughness concrete and preparation method thereof
The invention belongs to the technical field of concrete, and particularly relates to ultrahigh-toughness concrete and a preparation method thereof. The concrete is prepared from the following raw materials in parts by weight: cement, silica fume, aggregate, fibers, a water reducing agent and water, wherein the fibers are a mixture of modified polypropylene fibers and steel fibers; the modified polypropylene fibers are a mixture composed of silicon dioxide nano hollow sphere modified polypropylene crude fibers and silicon dioxide nano hollow sphere modified polypropylene fine fibers accordingto a mass ratio of 3: (1-2), the diameter of the modified polypropylene crude fiber is 0.10-0.15 mm, the alkali resistance is 100%, the diameter of the modified polypropylene fine fiber is 0.01-0.05 mm, the alkali resistance is 100%, the steel fibers are composed of coarse steel fibers and fine steel fibers according to the mass ratio of 1: (0.2-1), and the aggregate is composed of coarse aggregate and fine aggregate. The ultrahigh-toughness concrete has the advantages of high tensile strength, high compression resistance, relatively few proportioning components and low production cost; the preparation method is simple, easy to operate and suitable for large-scale production.
本发明属于混凝土技术领域，具体涉及一种超高韧性混凝土及其制备方法。包括如下重量份原料：水泥、微硅粉、骨料、纤维、减水剂以及水，所述纤维为改性聚丙烯纤维和钢纤维组成的混合物，所述改性聚丙烯纤维为二氧化硅纳米空心球改性聚丙烯粗纤维和二氧化硅纳米空心球改性聚丙烯细纤维以质量比为3：(1‑2)组成的混合物，所述改性聚丙烯粗纤维的直径为0.10‑0.15mm，耐碱性为100％，所述改性聚丙烯细纤维的直径为0.01‑0.05mm，耐碱性为100％，所述钢纤维由粗钢纤维和细钢纤维以质量比为1：(0.2‑1)组成，所述骨料由粗骨料和细骨料组成。本发明公开的超高韧性混凝土具有高抗拉，高抗压性能，且配比成份相对少，生产成本低；本发明公开的制备方法简单易操作，适合大规模生产。
Ultrahigh-toughness concrete and preparation method thereof
一种超高韧性混凝土及其制备方法
LU TIANXIAN (author)
2021-02-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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