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A platform for research: civil engineering, architecture and urbanism
The invention relates to steel fiber high-strength concrete and a preparation method thereof, and belongs to the technical field of concrete, and relates to concrete. The steel fiber high-strength concrete is prepared from 125-170 parts of water, 400-480 parts of cement, 700-760 parts of fine aggregate, 800-900 parts of coarse aggregate, 80-105 parts of fly ash, 85-105 parts of mineral powder, 10-15 parts of silica fume, 5-7 parts of additive, 10-18 parts of organic fibers and 6-15 parts of modified steel fibers. The modification method of the modified steel fibers comprises the following steps: mixing a silane coupling agent, alcohol and deionized water to obtain a modification solution, immersing steel fibers into the modification liquid, performing stirring, and taking out and drying the steel fibers to obtain the modified steel fibers. The preparation method comprises the following steps: mixing an admixture with half of water to obtain a mixed solution; mixing the organic fibers,the modified steel fibers and half of the mixed solution to obtain a mixture; mixing cement, fly ash, mineral powder, silica fume and the mixture to obtain a primary mixture; mixing the fine aggregate, the rest mixed solution and the primary mixture to obtain a base material; and mixing the coarse aggregate, the balance of water and the base material to obtain the concrete. The method has the effects that the bonding strength of the steel fibers and the concrete is improved, and the compression resistance of the concrete is improved.
本发明涉及一种钢纤维高强度混凝土及其制备方法，属于混凝土技术领域，其包含水125‑170份，水泥400‑480份，细骨料700‑760份，粗骨料800‑900份，粉煤灰80‑105份，矿粉85‑105份，硅灰10‑15份，外加剂5‑7份，有机纤维10‑18份，改性钢纤维6‑15份；改性钢纤维改性方法包括：硅烷偶联剂、醇和去离子水混合得改性液；钢纤维浸入改性液中，搅拌后取出干燥得改性钢纤维。制备方法包括：外加剂与一半水混合得混合液；有机纤维、改性钢纤维与一半混合液混合得混合料；水泥、粉煤灰、矿粉、硅灰与混合料混合，得初混料；细骨料、余量混合液与初混料混合得基料；粗骨料、余量水和基料混合得混凝土。本发明具有增加钢纤维与混凝土的粘接强度，提高混凝土的抗压性能的效果。
The invention relates to steel fiber high-strength concrete and a preparation method thereof, and belongs to the technical field of concrete, and relates to concrete. The steel fiber high-strength concrete is prepared from 125-170 parts of water, 400-480 parts of cement, 700-760 parts of fine aggregate, 800-900 parts of coarse aggregate, 80-105 parts of fly ash, 85-105 parts of mineral powder, 10-15 parts of silica fume, 5-7 parts of additive, 10-18 parts of organic fibers and 6-15 parts of modified steel fibers. The modification method of the modified steel fibers comprises the following steps: mixing a silane coupling agent, alcohol and deionized water to obtain a modification solution, immersing steel fibers into the modification liquid, performing stirring, and taking out and drying the steel fibers to obtain the modified steel fibers. The preparation method comprises the following steps: mixing an admixture with half of water to obtain a mixed solution; mixing the organic fibers,the modified steel fibers and half of the mixed solution to obtain a mixture; mixing cement, fly ash, mineral powder, silica fume and the mixture to obtain a primary mixture; mixing the fine aggregate, the rest mixed solution and the primary mixture to obtain a base material; and mixing the coarse aggregate, the balance of water and the base material to obtain the concrete. The method has the effects that the bonding strength of the steel fibers and the concrete is improved, and the compression resistance of the concrete is improved.
本发明涉及一种钢纤维高强度混凝土及其制备方法，属于混凝土技术领域，其包含水125‑170份，水泥400‑480份，细骨料700‑760份，粗骨料800‑900份，粉煤灰80‑105份，矿粉85‑105份，硅灰10‑15份，外加剂5‑7份，有机纤维10‑18份，改性钢纤维6‑15份；改性钢纤维改性方法包括：硅烷偶联剂、醇和去离子水混合得改性液；钢纤维浸入改性液中，搅拌后取出干燥得改性钢纤维。制备方法包括：外加剂与一半水混合得混合液；有机纤维、改性钢纤维与一半混合液混合得混合料；水泥、粉煤灰、矿粉、硅灰与混合料混合，得初混料；细骨料、余量混合液与初混料混合得基料；粗骨料、余量水和基料混合得混凝土。本发明具有增加钢纤维与混凝土的粘接强度，提高混凝土的抗压性能的效果。
Steel fiber high-strength concrete and preparation method thereof
一种钢纤维高强度混凝土及其制备方法
2020-08-11
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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