A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to the technical field of concrete preparation, in particular to fiber reinforced concrete and a preparation method thereof. The fiber reinforced concrete is prepared from the following components in parts by weight: 100 parts of cement, 30 to 50 parts of fly ash, 100 to 150 parts of fine aggregate, 5 to 20 parts of hollow fiber internally provided with concrete powder, 2 to 5 parts of water reducing agent and 30 to 60 parts of water, the concrete powder comprises cement. Part of concrete powder is arranged in the hollow fiber, so that the concrete powder in the hollow fiber is solidified after curing and curing, and the fiber strength is improved; meanwhile, the fibers are tightly wrapped by concrete inside and outside the hollow fibers through a hydration reaction, so that the fiber reinforcing and toughening effects are improved, and the compressive strength and the bending strength of the obtained concrete are remarkably improved.
本发明涉及混凝土制备技术领域，具体为一种纤维增强混凝土及其制备方法。该纤维增强混凝土按重量份包括：水泥100份、粉煤灰30‑50份、细骨料100‑150份、内置混凝土粉料的中空纤维5‑20份、减水剂2‑5份和水30‑60份；所述混凝土粉料包括水泥。本发明通过在中空纤维中内置部分混凝土粉料，使得养护固化后，中空纤维内部的混凝土粉料凝固，提高纤维强度；与此同时，中空纤维内外混凝土通过水化反应，将纤维紧密包裹，从而提高纤维增强增韧作用，因此得到的混凝土抗压强度和抗弯强度均显著提高。
The invention relates to the technical field of concrete preparation, in particular to fiber reinforced concrete and a preparation method thereof. The fiber reinforced concrete is prepared from the following components in parts by weight: 100 parts of cement, 30 to 50 parts of fly ash, 100 to 150 parts of fine aggregate, 5 to 20 parts of hollow fiber internally provided with concrete powder, 2 to 5 parts of water reducing agent and 30 to 60 parts of water, the concrete powder comprises cement. Part of concrete powder is arranged in the hollow fiber, so that the concrete powder in the hollow fiber is solidified after curing and curing, and the fiber strength is improved; meanwhile, the fibers are tightly wrapped by concrete inside and outside the hollow fibers through a hydration reaction, so that the fiber reinforcing and toughening effects are improved, and the compressive strength and the bending strength of the obtained concrete are remarkably improved.
本发明涉及混凝土制备技术领域，具体为一种纤维增强混凝土及其制备方法。该纤维增强混凝土按重量份包括：水泥100份、粉煤灰30‑50份、细骨料100‑150份、内置混凝土粉料的中空纤维5‑20份、减水剂2‑5份和水30‑60份；所述混凝土粉料包括水泥。本发明通过在中空纤维中内置部分混凝土粉料，使得养护固化后，中空纤维内部的混凝土粉料凝固，提高纤维强度；与此同时，中空纤维内外混凝土通过水化反应，将纤维紧密包裹，从而提高纤维增强增韧作用，因此得到的混凝土抗压强度和抗弯强度均显著提高。
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