Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Super early strength concrete and preparation method thereof
The invention relates to the field of concrete, and particularly discloses super early strength concrete and a preparation method thereof. The super early strength concrete is prepared from the following raw materials: cement, sand, broken stone, a water reducing agent, a retarder, an early strength agent, water and the like, wherein the cement comprises sulfoaluminate cement and ordinary Portland cement, the weight ratio of the sulfoaluminate cement to the ordinary Portland cement is (9.8-10.8): 1, the strength grade of the sulfoaluminate cement is 42.5, and the strength grade of the ordinary Portland cement is 42.5 R. The preparation method comprises the following steps: uniformly mixing sand, broken stone, cement, the early strength agent, the water reducing agent and the retarder, adding water, and stirring at a stirring speed of 20-30 rad/min for 3-5 minutes to obtain the super early strength concrete. The compressive strength of the prepared concrete can reach 20 MPa or above within 12 h, the construction period can be effectively shortened, and the requirement for rapid traffic is met.
本申请涉及混凝土的领域，具体公开了一种超早强混凝土及其制备方法。一种超早强混凝土，由水泥、砂子、碎石、减水剂、缓凝剂、早强剂、水等原料制成：其中，所述水泥包括硫铝酸盐水泥以及普通硅酸盐水泥，硫铝酸盐水泥以及普通硅酸盐水泥的重量比为（9.8‑10.8）：1，且所述硫铝酸盐水泥的强度等级为42.5，所述普通硅酸盐水泥的强度等级为42.5R；其制备方法为：将砂子、碎石、水泥、早强剂、减水剂以及缓凝剂均匀混合后，加入水，以20‑30rad/min的搅拌速度搅拌3‑5min，即可得到超早强混凝土。本申请制得的混凝土在12h内的抗压强度能够达20MPa以上，能够有效缩短工期，满足快速通车的要求。
Super early strength concrete and preparation method thereof
The invention relates to the field of concrete, and particularly discloses super early strength concrete and a preparation method thereof. The super early strength concrete is prepared from the following raw materials: cement, sand, broken stone, a water reducing agent, a retarder, an early strength agent, water and the like, wherein the cement comprises sulfoaluminate cement and ordinary Portland cement, the weight ratio of the sulfoaluminate cement to the ordinary Portland cement is (9.8-10.8): 1, the strength grade of the sulfoaluminate cement is 42.5, and the strength grade of the ordinary Portland cement is 42.5 R. The preparation method comprises the following steps: uniformly mixing sand, broken stone, cement, the early strength agent, the water reducing agent and the retarder, adding water, and stirring at a stirring speed of 20-30 rad/min for 3-5 minutes to obtain the super early strength concrete. The compressive strength of the prepared concrete can reach 20 MPa or above within 12 h, the construction period can be effectively shortened, and the requirement for rapid traffic is met.
本申请涉及混凝土的领域，具体公开了一种超早强混凝土及其制备方法。一种超早强混凝土，由水泥、砂子、碎石、减水剂、缓凝剂、早强剂、水等原料制成：其中，所述水泥包括硫铝酸盐水泥以及普通硅酸盐水泥，硫铝酸盐水泥以及普通硅酸盐水泥的重量比为（9.8‑10.8）：1，且所述硫铝酸盐水泥的强度等级为42.5，所述普通硅酸盐水泥的强度等级为42.5R；其制备方法为：将砂子、碎石、水泥、早强剂、减水剂以及缓凝剂均匀混合后，加入水，以20‑30rad/min的搅拌速度搅拌3‑5min，即可得到超早强混凝土。本申请制得的混凝土在12h内的抗压强度能够达20MPa以上，能够有效缩短工期，满足快速通车的要求。
Super early strength concrete and preparation method thereof
一种超早强混凝土及其制备方法
YU CHUHONG (Autor:in)
18.05.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Super early strength concrete and preparation method thereof
| Europäisches Patentamt | 2023
Super early strength concrete and preparation method thereof
| Europäisches Patentamt | 2024
Super early strength concrete and preparation method thereof
| Europäisches Patentamt | 2024
Super-early-strength high-strength concrete and preparation method thereof
| Europäisches Patentamt | 2021
Super-early-strength recycled concrete and preparation method thereof
| Europäisches Patentamt | 2021