Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Steam-curing-free concrete and preparation method thereof
The invention discloses steam-curing-free concrete and a preparation method thereof. The steam-curing-free concrete can be used for prefabricated parts. The concrete per cubic meter is prepared from the following raw materials: 330-420 kg of cement, 0-80 kg of first-grade fly ash, 0-80 kg of S95 mineral powder, 690-710 kg of sand, 1080-1100 kg of stones, 5-12 kg of an early strength agent, 10-18 kg of a water reducing agent, and 100-114 kg of water. During stirring, the cement, the water, the early strength agent, the water reducing agent, the first-grade fly ash and the S95 mineral powder are added into a stirrer according to a certain mass ratio and stirred at a high speed for 50-60 seconds; and then the sand and the stones are added, then stirring is conducted at a low speed for 55-65 seconds to obtain concrete, the concrete is poured into a mold, and processing is carried out to prepare a required prefabricated part. The early strength agent and the water reducing agent are added at the same time and are controlled at a certain proportion; the slump of the prepared concrete is 120 +/- 30 mm; the compressive strength of the concrete can reach 19 Mpa through 8-hour natural curing (wherein a natural environment temperature is 25-34 DEG C), so demolding and hoisting requirements of prefabricated parts can be met, mold turnover can be accelerated, and production efficiency is improved; and after 12 hours of natural curing, the highest strength of the concrete can reach 46.2 Mpa.
本发明公开了一种免蒸养混凝土及其制备方法，可用于预制构件。每立方米该混凝土的制备原料包括：水泥：330‑420kg；一级粉煤灰：0‑80kg；S95矿粉：0‑80kg；砂子：690‑710kg；石子：1080‑1100kg；早强剂：5‑12kg；减水剂：10‑18kg；水：100‑114kg。搅拌时，按质量配比，先将水泥、水、早强剂、减水剂、一级粉煤灰和S95矿粉加入到搅拌机中，高速搅拌50‑60秒；再加入砂子和石子，低速搅拌55‑65秒，制得混凝土，再倒入模具中，加工成所需的预制构件。本发明同时加入早强剂和减水剂，并控制一定量的配比，制备的混凝土坍落度为120±30mm，通过8小时自然养护(自然环境温度25～34℃)，混凝土抗压强度能达到19Mpa，可达到预制构件脱模起吊要求，能加快模具的周转，从而提高生产效率；12小时的自然养护，强度最高可达46.2Mpa。
Steam-curing-free concrete and preparation method thereof
The invention discloses steam-curing-free concrete and a preparation method thereof. The steam-curing-free concrete can be used for prefabricated parts. The concrete per cubic meter is prepared from the following raw materials: 330-420 kg of cement, 0-80 kg of first-grade fly ash, 0-80 kg of S95 mineral powder, 690-710 kg of sand, 1080-1100 kg of stones, 5-12 kg of an early strength agent, 10-18 kg of a water reducing agent, and 100-114 kg of water. During stirring, the cement, the water, the early strength agent, the water reducing agent, the first-grade fly ash and the S95 mineral powder are added into a stirrer according to a certain mass ratio and stirred at a high speed for 50-60 seconds; and then the sand and the stones are added, then stirring is conducted at a low speed for 55-65 seconds to obtain concrete, the concrete is poured into a mold, and processing is carried out to prepare a required prefabricated part. The early strength agent and the water reducing agent are added at the same time and are controlled at a certain proportion; the slump of the prepared concrete is 120 +/- 30 mm; the compressive strength of the concrete can reach 19 Mpa through 8-hour natural curing (wherein a natural environment temperature is 25-34 DEG C), so demolding and hoisting requirements of prefabricated parts can be met, mold turnover can be accelerated, and production efficiency is improved; and after 12 hours of natural curing, the highest strength of the concrete can reach 46.2 Mpa.
本发明公开了一种免蒸养混凝土及其制备方法，可用于预制构件。每立方米该混凝土的制备原料包括：水泥：330‑420kg；一级粉煤灰：0‑80kg；S95矿粉：0‑80kg；砂子：690‑710kg；石子：1080‑1100kg；早强剂：5‑12kg；减水剂：10‑18kg；水：100‑114kg。搅拌时，按质量配比，先将水泥、水、早强剂、减水剂、一级粉煤灰和S95矿粉加入到搅拌机中，高速搅拌50‑60秒；再加入砂子和石子，低速搅拌55‑65秒，制得混凝土，再倒入模具中，加工成所需的预制构件。本发明同时加入早强剂和减水剂，并控制一定量的配比，制备的混凝土坍落度为120±30mm，通过8小时自然养护(自然环境温度25～34℃)，混凝土抗压强度能达到19Mpa，可达到预制构件脱模起吊要求，能加快模具的周转，从而提高生产效率；12小时的自然养护，强度最高可达46.2Mpa。
Steam-curing-free concrete and preparation method thereof
一种免蒸养混凝土及其制备方法
CUI JIAMING (Autor:in) / JIANG YUANHAI (Autor:in) / HUANG FAJUN (Autor:in) / LAN HAOJIE (Autor:in) / CHENG HONGYE (Autor:in) / YIN XUFENG (Autor:in) / LUO KEYANG (Autor:in)
19.10.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Steam-curing-free precast concrete and preparation method thereof
| Europäisches Patentamt | 2021
Steam-curing-free aerated concrete and preparation method thereof
| Europäisches Patentamt | 2024
Steam-curing-free precast concrete and preparation method thereof
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2024
Low-temperature steam-curing-free concrete and preparation method thereof
| Europäisches Patentamt | 2024