A platform for research: civil engineering, architecture and urbanism
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-retarding concrete and a preparation method thereof. Per cubic meter of the concrete is composed of the following components: 240-310 kg of cement, 105-160 kg of fly ash, 760-880 kg of medium sand, 1020-1050 kg of crushed stones, a super retarding admixture accounting for 1.6-2.1% of the total amount of the cement and the fly ash, and a retarder accounting for 8%-10% of the total amount of the super-retarding admixture, wherein the water-binder ratio is 0.36 to 0.39, and the retarder is any two of citric acid, white sugar, sodium gluconate and sodium borate. According to the invention, the risk that the concrete blocks a pipe in the construction process is effectively reduced, mortar drives stones to flow after the concrete enters a mold, the phenomenon of stone accumulation is avoided, the overall homogeneity of the poured concrete is effectively ensured, and the impermeability of the concrete is improved.
本发明涉及混凝土技术领域，具体公开了一种超缓凝混凝土，每立方米混凝土由以下组份组成：水泥：240‑310kg；粉煤灰：105‑160kg；中砂：760‑880kg；碎石：1020‑1050kg；超缓凝外加剂：为水泥和粉煤灰总量的1.6‑2.1％；缓凝剂：为超缓凝外加剂总量的8％‑10％；水胶比为0.36‑0.39；所述缓凝剂为柠檬酸、白糖、葡萄糖酸钠、硼酸钠中的任意两种。以及制备方法，本发明有效的降低了在施工过程中混凝土堵管风险，混凝土在入模后砂浆带动动石子流动，不会出现石子堆积的现象，有效的保证了所浇筑混凝土整体的均质性，提高了混凝土的抗渗能力。
Super-retarding concrete and preparation method thereof
The invention relates to the technical field of concrete, and particularly discloses super-retarding concrete and a preparation method thereof. Per cubic meter of the concrete is composed of the following components: 240-310 kg of cement, 105-160 kg of fly ash, 760-880 kg of medium sand, 1020-1050 kg of crushed stones, a super retarding admixture accounting for 1.6-2.1% of the total amount of the cement and the fly ash, and a retarder accounting for 8%-10% of the total amount of the super-retarding admixture, wherein the water-binder ratio is 0.36 to 0.39, and the retarder is any two of citric acid, white sugar, sodium gluconate and sodium borate. According to the invention, the risk that the concrete blocks a pipe in the construction process is effectively reduced, mortar drives stones to flow after the concrete enters a mold, the phenomenon of stone accumulation is avoided, the overall homogeneity of the poured concrete is effectively ensured, and the impermeability of the concrete is improved.
本发明涉及混凝土技术领域，具体公开了一种超缓凝混凝土，每立方米混凝土由以下组份组成：水泥：240‑310kg；粉煤灰：105‑160kg；中砂：760‑880kg；碎石：1020‑1050kg；超缓凝外加剂：为水泥和粉煤灰总量的1.6‑2.1％；缓凝剂：为超缓凝外加剂总量的8％‑10％；水胶比为0.36‑0.39；所述缓凝剂为柠檬酸、白糖、葡萄糖酸钠、硼酸钠中的任意两种。以及制备方法，本发明有效的降低了在施工过程中混凝土堵管风险，混凝土在入模后砂浆带动动石子流动，不会出现石子堆积的现象，有效的保证了所浇筑混凝土整体的均质性，提高了混凝土的抗渗能力。
Super-retarding concrete and preparation method thereof
一种超缓凝混凝土及制备方法
DU ZHONG (author) / WU CHENGSHUAI (author)
2021-07-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024