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Ultra-high performance concrete with high breaking strength and preparation method thereof
The invention belongs to the technical field of building materials, and discloses ultra-high performance concrete with high breaking strength and a preparation method thereof. The ultra-high performance concrete is prepared from the following components in parts by weight: 1020 to 1035 parts of graphene oxide, metal fibers, a cementing material and 1122 to 1139 parts of sand, the cementing material is prepared from the following components in parts by weight: 613 to 620 parts of cement, 152.75 to 155.5 parts of silica fume, 204 to 207 parts of fly ash and 50.25 to 52.5 parts of slag powder; the content of the graphene oxide is 0.01-0.3% of the weight of the gel material; and the volume of the metal fibers is 1.2-2.5% of the volume of the ultra-high performance concrete. In the preparation process of the ultra-high-performance concrete, a device with the height of a discharge port not exceeding 10 mm is used, directional distribution of metal fibers in the ultra-high-performance concrete is improved, and therefore the breaking strength, high temperature resistance and low temperature resistance of the ultra-high-performance concrete are remarkably improved, and the mechanical performance and weather resistance of the ultra-high-performance concrete are remarkably improved on the whole.
本发明属于建筑材料技术领域，公开了一种高抗折强度的超高性能混凝土及其制备方法。该超高性能混凝土，按重量份计，包括氧化石墨烯、金属纤维、胶凝材料1020‑1035份、砂1122‑1139份；胶凝材料包括水泥613‑620份、硅灰152.75‑155.5份、粉煤灰204‑207份和矿渣粉50.25‑52.5份；氧化石墨烯的含量为所述凝胶材料的重量的0.01‑0.3％；金属纤维的体积为所述超高性能混凝土的体积的1.2‑2.5％。该超高性能混凝土的制备过程中使用出料口高度不超过10mm的装置，改善金属纤维在超高性能混凝土中的定向分布，从而显著提高了超高性能混凝土的抗折强度和抗高温、低温性能，整体上显著提高了超高性能混凝土的机械性能和耐候性。
Ultra-high performance concrete with high breaking strength and preparation method thereof
The invention belongs to the technical field of building materials, and discloses ultra-high performance concrete with high breaking strength and a preparation method thereof. The ultra-high performance concrete is prepared from the following components in parts by weight: 1020 to 1035 parts of graphene oxide, metal fibers, a cementing material and 1122 to 1139 parts of sand, the cementing material is prepared from the following components in parts by weight: 613 to 620 parts of cement, 152.75 to 155.5 parts of silica fume, 204 to 207 parts of fly ash and 50.25 to 52.5 parts of slag powder; the content of the graphene oxide is 0.01-0.3% of the weight of the gel material; and the volume of the metal fibers is 1.2-2.5% of the volume of the ultra-high performance concrete. In the preparation process of the ultra-high-performance concrete, a device with the height of a discharge port not exceeding 10 mm is used, directional distribution of metal fibers in the ultra-high-performance concrete is improved, and therefore the breaking strength, high temperature resistance and low temperature resistance of the ultra-high-performance concrete are remarkably improved, and the mechanical performance and weather resistance of the ultra-high-performance concrete are remarkably improved on the whole.
本发明属于建筑材料技术领域，公开了一种高抗折强度的超高性能混凝土及其制备方法。该超高性能混凝土，按重量份计，包括氧化石墨烯、金属纤维、胶凝材料1020‑1035份、砂1122‑1139份；胶凝材料包括水泥613‑620份、硅灰152.75‑155.5份、粉煤灰204‑207份和矿渣粉50.25‑52.5份；氧化石墨烯的含量为所述凝胶材料的重量的0.01‑0.3％；金属纤维的体积为所述超高性能混凝土的体积的1.2‑2.5％。该超高性能混凝土的制备过程中使用出料口高度不超过10mm的装置，改善金属纤维在超高性能混凝土中的定向分布，从而显著提高了超高性能混凝土的抗折强度和抗高温、低温性能，整体上显著提高了超高性能混凝土的机械性能和耐候性。
Ultra-high performance concrete with high breaking strength and preparation method thereof
一种高抗折强度的超高性能混凝土及其制备方法
WU YUYOU (author) / LU QUAN (author) / CHEN SONG (author) / LIU CHANGJIANG (author)
2021-10-08
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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