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A platform for research: civil engineering, architecture and urbanism
Catalyst for sprayed concrete and preparation method thereof
The invention provides a catalyst for sprayed concrete and a preparation method thereof, and belongs to the field of concrete admixtures, the catalyst for sprayed concrete comprises the following components by weight: 10-12% of a water reducer, 0.3-0.5% of a modified viscosity modifier, 1-5% of an ion chelating agent, 6-8% of a modified coagulation aid, 0.1-0.2% of an air entraining agent, and the balance of water; the preparation method of the catalyst comprises the following steps: adding the modified viscosity modifier into water, uniformly stirring, sequentially adding the water reducer, the ion chelating agent, the modified coagulation aid and the air entraining agent, and stirring to obtain a product; through the synergistic effect of the modified viscosity modifier and the modified setting aid, the special catalyst for sprayed concrete C25 is obtained, during application, the cement dosage of concrete can be reduced, the 28d standard strength of C25 sprayed concrete can be met, the mixing amount of an accelerator can be reduced, the rebound rate can be reduced, and pipes are not prone to being blocked.
本发明提供了一种喷射混凝土用催化剂及其制备方法，属于混凝土外加剂领域，所述喷射混凝土用催化剂，按照重量百分比计，包括以下组分：减水剂10‑12%、改性粘度调节剂0.3‑0.5%、离子螯合剂1‑5%、改性凝助剂6‑8%、引气剂0.1‑0.2%、余量为水；所述催化剂的制备方法，包括如下步骤：在水中加入改性粘度调节剂，搅拌均匀后依次加入减水剂、离子螯合剂、改性凝助剂、引气剂，搅拌得到产物；本发明通过改性粘度调节剂和改性凝助剂的协同作用，得到一种喷射混凝土C25专用的催化剂，在应用时，不仅能够降低混凝土的水泥用量，满足C25喷射混凝土28d的标准强度，还能够降低速凝剂的掺量、降低回弹率，不易堵管。
Catalyst for sprayed concrete and preparation method thereof
The invention provides a catalyst for sprayed concrete and a preparation method thereof, and belongs to the field of concrete admixtures, the catalyst for sprayed concrete comprises the following components by weight: 10-12% of a water reducer, 0.3-0.5% of a modified viscosity modifier, 1-5% of an ion chelating agent, 6-8% of a modified coagulation aid, 0.1-0.2% of an air entraining agent, and the balance of water; the preparation method of the catalyst comprises the following steps: adding the modified viscosity modifier into water, uniformly stirring, sequentially adding the water reducer, the ion chelating agent, the modified coagulation aid and the air entraining agent, and stirring to obtain a product; through the synergistic effect of the modified viscosity modifier and the modified setting aid, the special catalyst for sprayed concrete C25 is obtained, during application, the cement dosage of concrete can be reduced, the 28d standard strength of C25 sprayed concrete can be met, the mixing amount of an accelerator can be reduced, the rebound rate can be reduced, and pipes are not prone to being blocked.
本发明提供了一种喷射混凝土用催化剂及其制备方法，属于混凝土外加剂领域，所述喷射混凝土用催化剂，按照重量百分比计，包括以下组分：减水剂10‑12%、改性粘度调节剂0.3‑0.5%、离子螯合剂1‑5%、改性凝助剂6‑8%、引气剂0.1‑0.2%、余量为水；所述催化剂的制备方法，包括如下步骤：在水中加入改性粘度调节剂，搅拌均匀后依次加入减水剂、离子螯合剂、改性凝助剂、引气剂，搅拌得到产物；本发明通过改性粘度调节剂和改性凝助剂的协同作用，得到一种喷射混凝土C25专用的催化剂，在应用时，不仅能够降低混凝土的水泥用量，满足C25喷射混凝土28d的标准强度，还能够降低速凝剂的掺量、降低回弹率，不易堵管。
Catalyst for sprayed concrete and preparation method thereof
一种喷射混凝土用催化剂及其制备方法
WANG YANQIN (author) / DAI WEI (author) / YANG MAOQIANG (author) / WANG YONGWEI (author) / WANG TINGWEI (author) / ZHANG JUN (author) / LI CONGCONG (author)
2024-11-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Functional admixture for sprayed concrete, preparation method and sprayed concrete
| European Patent Office | 2024