Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method and application of steam-curing-free waste residue UHPC (Ultra High Performance Concrete)
The invention relates to the technical field of concrete, which is prepared by the following steps: sequentially adding ordinary Portland cement, sand and slag powder into a stirrer, uniformly stirring at a low speed for 1 minute, slowly adding water into the stirrer, stirring at a high speed for 3 minutes, sequentially and slowly adding an early strength agent, a water reducing agent, an exciting agent and a water-retaining agent into the concrete, and stirring at a high speed for more than 8 minutes to obtain the concrete, comprising 200 to 400 parts of ordinary Portland cement, 300 to 500 parts of sand, 200 to 300 parts of slag powder and 400 to 600 parts of water. According to the preparation method and application of the steam-curing-free waste residue UHPC concrete, a strength-promoting shrinkage-reducing agent is adopted to replace an early strength agent, a synergistic effect is generated by reasonably adjusting the component proportion of the strength-promoting shrinkage-reducing agent, the prepared concrete is high in early strength, and therefore the requirement for steam-curing-free rapid demolding is met; the durability, the impermeability and the water-retaining property of the concrete can be adjusted at the same time, the curing time is shortened, the production efficiency is improved, and the strength is not reduced.
本发明涉及混凝土技术领域，其将普通硅酸盐水泥、砂、矿渣粉依次加入到搅拌机中，低速搅拌1min，搅拌均匀，再往1)缓慢加入水，高速搅拌3mi，再依次在混凝土中缓慢加入早强剂、减水剂、激发剂、保水剂，高速搅拌8min以上，制得混凝土，包括普通硅酸盐水泥200～400份、砂300～500份、矿渣粉200～300份、水400～600份。且公开了一种免蒸养废渣UHPC混凝土的制备方法及应用，通过采用促强减缩剂替代早强剂，通过合理调节其成分配比产生协同作用,使得制备得到的混凝土的早期强度较高,从而满足免蒸养快速脱模的要求，同时促强、保水剂的加入，可以同时调节混凝土的耐久性、抗渗性与保水性，同时养护时间减少，提高生产效率，同时强度不会降低。
Preparation method and application of steam-curing-free waste residue UHPC (Ultra High Performance Concrete)
The invention relates to the technical field of concrete, which is prepared by the following steps: sequentially adding ordinary Portland cement, sand and slag powder into a stirrer, uniformly stirring at a low speed for 1 minute, slowly adding water into the stirrer, stirring at a high speed for 3 minutes, sequentially and slowly adding an early strength agent, a water reducing agent, an exciting agent and a water-retaining agent into the concrete, and stirring at a high speed for more than 8 minutes to obtain the concrete, comprising 200 to 400 parts of ordinary Portland cement, 300 to 500 parts of sand, 200 to 300 parts of slag powder and 400 to 600 parts of water. According to the preparation method and application of the steam-curing-free waste residue UHPC concrete, a strength-promoting shrinkage-reducing agent is adopted to replace an early strength agent, a synergistic effect is generated by reasonably adjusting the component proportion of the strength-promoting shrinkage-reducing agent, the prepared concrete is high in early strength, and therefore the requirement for steam-curing-free rapid demolding is met; the durability, the impermeability and the water-retaining property of the concrete can be adjusted at the same time, the curing time is shortened, the production efficiency is improved, and the strength is not reduced.
本发明涉及混凝土技术领域，其将普通硅酸盐水泥、砂、矿渣粉依次加入到搅拌机中，低速搅拌1min，搅拌均匀，再往1)缓慢加入水，高速搅拌3mi，再依次在混凝土中缓慢加入早强剂、减水剂、激发剂、保水剂，高速搅拌8min以上，制得混凝土，包括普通硅酸盐水泥200～400份、砂300～500份、矿渣粉200～300份、水400～600份。且公开了一种免蒸养废渣UHPC混凝土的制备方法及应用，通过采用促强减缩剂替代早强剂，通过合理调节其成分配比产生协同作用,使得制备得到的混凝土的早期强度较高,从而满足免蒸养快速脱模的要求，同时促强、保水剂的加入，可以同时调节混凝土的耐久性、抗渗性与保水性，同时养护时间减少，提高生产效率，同时强度不会降低。
Preparation method and application of steam-curing-free waste residue UHPC (Ultra High Performance Concrete)
一种免蒸养废渣UHPC混凝土的制备方法及应用
ZHANG HONGBIN (Autor:in) / BIAN ZHOUHONG (Autor:in) / LIU DONG (Autor:in) / HU JUN (Autor:in) / SU CHUANG (Autor:in) / PENG LIANG (Autor:in)
03.11.2023
Patent
Elektronische Ressource
Chinesisch
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