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A platform for research: civil engineering, architecture and urbanism
Super-retarding concrete and preparation method thereof
The invention relates to the technical field of concrete, and particularly discloses super-retarded concrete and a preparation method thereof. The invention discloses super-retarded concrete. The super-retarded concrete comprises the following components in parts by weight: 390-450 parts of a cementing material; 720 to 840 parts of sand; 920 to 1080 parts of broken stone; 9-13 parts of a water reducing agent; 8 to 12 parts of a retarder; 150 to 200 parts of water; wherein the cementing material comprises cement, fly ash and slag powder in a weight ratio of (280-320): (70-90): (37-57). The invention also provides a preparation method of the super-retarded concrete. According to the present invention, the super-retarding concrete obtained by using the formula and the preparation method has characteristics of long setting time, low bleeding rate, good slump retention effect, and good compressive strength after the final setting.
本申请涉及混凝土的技术领域，具体公开了一种超缓凝混凝土及其制备方法。本申请公开的超缓凝混凝土，包括以下重量份的组分：胶凝材料390‑450份；砂720‑840份；碎石920‑1080份；减水剂9‑13份；缓凝剂8‑12份；水150‑200份；其中，胶凝材料包括重量比为（280‑320）：（70‑90）：（37‑57）的水泥、粉煤灰和矿渣粉。本申请还提供了上述超缓凝混凝土的制备方法。利用本申请提供的配方和制备方法得到的超缓凝混凝土具备较长的凝结时间和较低的泌水率，坍落度保留效果较好，并且在终凝后的抗压强度较好。
Super-retarding concrete and preparation method thereof
The invention relates to the technical field of concrete, and particularly discloses super-retarded concrete and a preparation method thereof. The invention discloses super-retarded concrete. The super-retarded concrete comprises the following components in parts by weight: 390-450 parts of a cementing material; 720 to 840 parts of sand; 920 to 1080 parts of broken stone; 9-13 parts of a water reducing agent; 8 to 12 parts of a retarder; 150 to 200 parts of water; wherein the cementing material comprises cement, fly ash and slag powder in a weight ratio of (280-320): (70-90): (37-57). The invention also provides a preparation method of the super-retarded concrete. According to the present invention, the super-retarding concrete obtained by using the formula and the preparation method has characteristics of long setting time, low bleeding rate, good slump retention effect, and good compressive strength after the final setting.
本申请涉及混凝土的技术领域，具体公开了一种超缓凝混凝土及其制备方法。本申请公开的超缓凝混凝土，包括以下重量份的组分：胶凝材料390‑450份；砂720‑840份；碎石920‑1080份；减水剂9‑13份；缓凝剂8‑12份；水150‑200份；其中，胶凝材料包括重量比为（280‑320）：（70‑90）：（37‑57）的水泥、粉煤灰和矿渣粉。本申请还提供了上述超缓凝混凝土的制备方法。利用本申请提供的配方和制备方法得到的超缓凝混凝土具备较长的凝结时间和较低的泌水率，坍落度保留效果较好，并且在终凝后的抗压强度较好。
Super-retarding concrete and preparation method thereof
一种超缓凝混凝土及其制备方法
WANG BO (author) / LIU BOFENG (author) / YANG NAN (author) / ZHANG ZHIQIANG (author) / YANG BO (author) / PANG YONGLONG (author) / WEN JUNQIANG (author) / YANG RONGJUN (author) / LI YANCHANG (author) / ZHANG SHUO (author)
2023-06-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024