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A platform for research: civil engineering, architecture and urbanism
Ultra-high performance concrete with high strength and preparation method thereof
The invention discloses ultra-high performance concrete with high strength. The ultra-high performance concrete is prepared from the following raw materials: cement, silica fume, fly ash, coarse aggregate, fine aggregate, a water reducing agent, modified steel fibers and water, the modified steel fibers are formed by modifying steel fibers through a silane coupling agent and an auxiliary agent. The preparation method comprises the following steps: S1, adding the cement and the silica fume into a stirrer, stirring for 1-2 minutes, mixing the water reducing agent and the water to form a solution, adding part of the mixed solution into the stirrer, and stirring for 2-4 minutes; s2, adding the coarse aggregate and the fine aggregate into a stirrer, and stirring for 4-8 minutes; and S3, completely adding the modified steel fibers and the residual mixed solution of the water reducing agent and the water in the step S1 into the stirrer within a certain time, and stirring for 4-8 minutes to obtain the ultra-high performance concrete. According to the invention, the loading capacity of the ultra-high performance concrete can be improved.
本发明公开了一种具有高强度的超高性能混凝土，包括以下原料制成：水泥、硅灰、粉煤灰、粗骨料、细骨料、减水剂、改性钢纤维、水；所述的改性钢纤维为钢纤维通过硅烷偶联剂及辅助剂改性而成。本发明还公开了其制备方法，包括以下步骤：S1：将水泥、硅灰加入搅拌机内搅拌1‑2min，将减水剂与水混合成溶液，并将部分混合溶液加入搅拌机中，搅拌2‑4min；S2：将粗骨料和细骨料加入搅拌机中，搅拌4‑8min；S3：将改性钢纤维和S1中剩余的减水剂与水的混合溶液全部加入搅拌机中，在一定时间内加完，搅拌4‑8min，得到超高性能混凝土。本发明能够提高超高性能混凝土的受荷能力。
Ultra-high performance concrete with high strength and preparation method thereof
The invention discloses ultra-high performance concrete with high strength. The ultra-high performance concrete is prepared from the following raw materials: cement, silica fume, fly ash, coarse aggregate, fine aggregate, a water reducing agent, modified steel fibers and water, the modified steel fibers are formed by modifying steel fibers through a silane coupling agent and an auxiliary agent. The preparation method comprises the following steps: S1, adding the cement and the silica fume into a stirrer, stirring for 1-2 minutes, mixing the water reducing agent and the water to form a solution, adding part of the mixed solution into the stirrer, and stirring for 2-4 minutes; s2, adding the coarse aggregate and the fine aggregate into a stirrer, and stirring for 4-8 minutes; and S3, completely adding the modified steel fibers and the residual mixed solution of the water reducing agent and the water in the step S1 into the stirrer within a certain time, and stirring for 4-8 minutes to obtain the ultra-high performance concrete. According to the invention, the loading capacity of the ultra-high performance concrete can be improved.
本发明公开了一种具有高强度的超高性能混凝土，包括以下原料制成：水泥、硅灰、粉煤灰、粗骨料、细骨料、减水剂、改性钢纤维、水；所述的改性钢纤维为钢纤维通过硅烷偶联剂及辅助剂改性而成。本发明还公开了其制备方法，包括以下步骤：S1：将水泥、硅灰加入搅拌机内搅拌1‑2min，将减水剂与水混合成溶液，并将部分混合溶液加入搅拌机中，搅拌2‑4min；S2：将粗骨料和细骨料加入搅拌机中，搅拌4‑8min；S3：将改性钢纤维和S1中剩余的减水剂与水的混合溶液全部加入搅拌机中，在一定时间内加完，搅拌4‑8min，得到超高性能混凝土。本发明能够提高超高性能混凝土的受荷能力。
Ultra-high performance concrete with high strength and preparation method thereof
一种具有高强度的超高性能混凝土及其制备方法
CHEN SHIQUAN (author) / TAN SHAOXU (author) / TIAN SHIKUAN (author) / WANG ZHIJIN (author) / ZENG GUOSHENG (author) / ZHANG YI (author) / ZOU SHUNQUAN (author) / ZOU JIAHONG (author) / HAN PENGFU (author) / LI GUANBING (author)
2024-02-02
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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