A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Low-hydration-heat large-volume aluminoferrite cement concrete and preparation method thereof
The invention belongs to the field of special concrete, and particularly relates to low-hydration-heat large-volume aluminoferrite cement concrete and a preparation method thereof. The preparation method comprises the following steps: firstly, putting the sand, the iron aluminate cement, the fly ash, the mineral powder, the silica fume and the limestone powder into a stirrer, and stirring for 0.4-0.5 h at a linear speed of 2-5m/s to obtain a first mixture; adding water and an additive into the stirrer, and rapidly stirring for 30-40 seconds at a linear speed of 4-6 m/s to obtain uniform mortar; and adding the stones into the stirrer, and uniformly stirring at a linear speed of 1-3m/s for 50-60s to obtain the low-hydration-heat large-volume aluminoferrite cement concrete mixture. According to the invention, the temperature crack risk of the mass concrete is reduced, the cementing material has better performance, the heat release amount and heat release concentration of the mass concrete are reduced from the angle of aggregate, the heat release concentration phenomenon of the cement is reduced, the cement is combined with the aggregate to the greatest extent, and the heat loss is facilitated.
本发明属于特种混凝土领域，具体涉及一种低水化热大体积铁铝酸盐水泥混凝土及其制备方法。先砂、铁铝酸盐水泥、粉煤灰、矿粉、硅灰、和石灰石粉投入搅拌机内，以2～5m/s线速度搅拌0.4～0.5h，得到第一混合物；再将水和外加剂投入搅拌机内，以4～6m/s线速度快速搅拌30s～40s得到均匀的砂浆；再将石子投入搅拌机内，以1～3m/s线速度均速搅拌50～60s，得到低水化热大体积铁铝酸盐水泥混凝土拌合物。本发明有利于降低大体积混凝土温度裂缝风险，使胶凝材料具有更好的性能，从骨料的角度降低了大体积混凝土的放热量和放热集中，降低了水泥放热集中现象，最大程度与骨料结合，且对热量散失有好处。
Low-hydration-heat large-volume aluminoferrite cement concrete and preparation method thereof
The invention belongs to the field of special concrete, and particularly relates to low-hydration-heat large-volume aluminoferrite cement concrete and a preparation method thereof. The preparation method comprises the following steps: firstly, putting the sand, the iron aluminate cement, the fly ash, the mineral powder, the silica fume and the limestone powder into a stirrer, and stirring for 0.4-0.5 h at a linear speed of 2-5m/s to obtain a first mixture; adding water and an additive into the stirrer, and rapidly stirring for 30-40 seconds at a linear speed of 4-6 m/s to obtain uniform mortar; and adding the stones into the stirrer, and uniformly stirring at a linear speed of 1-3m/s for 50-60s to obtain the low-hydration-heat large-volume aluminoferrite cement concrete mixture. According to the invention, the temperature crack risk of the mass concrete is reduced, the cementing material has better performance, the heat release amount and heat release concentration of the mass concrete are reduced from the angle of aggregate, the heat release concentration phenomenon of the cement is reduced, the cement is combined with the aggregate to the greatest extent, and the heat loss is facilitated.
本发明属于特种混凝土领域，具体涉及一种低水化热大体积铁铝酸盐水泥混凝土及其制备方法。先砂、铁铝酸盐水泥、粉煤灰、矿粉、硅灰、和石灰石粉投入搅拌机内，以2～5m/s线速度搅拌0.4～0.5h，得到第一混合物；再将水和外加剂投入搅拌机内，以4～6m/s线速度快速搅拌30s～40s得到均匀的砂浆；再将石子投入搅拌机内，以1～3m/s线速度均速搅拌50～60s，得到低水化热大体积铁铝酸盐水泥混凝土拌合物。本发明有利于降低大体积混凝土温度裂缝风险，使胶凝材料具有更好的性能，从骨料的角度降低了大体积混凝土的放热量和放热集中，降低了水泥放热集中现象，最大程度与骨料结合，且对热量散失有好处。
Low-hydration-heat large-volume aluminoferrite cement concrete and preparation method thereof
一种低水化热大体积铁铝酸盐水泥混凝土及其制备方法
LIU LI (author) / QI DONGYOU (author) / WU SHENGGUO (author) / ZHENG JING (author) / WANG XIAOKE (author)
2024-01-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Chemical corrosion resistant aluminoferrite cement concrete and preparation method thereof
| European Patent Office | 2024
Steel slag aluminoferrite cement and preparation method thereof
| European Patent Office | 2024
Low-viscosity high-durability aluminoferrite cement concrete and preparation method thereof
| European Patent Office | 2024
Method for preparing aluminoferrite cement based on red mud and aluminoferrite cement
| European Patent Office | 2024
| European Patent Office | 2024