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Functional admixture for sprayed concrete, preparation method and sprayed concrete
The invention discloses a functional admixture for sprayed concrete, a preparation method and the sprayed concrete. Comprising the following components in parts by weight: 400-450 parts of composite steel slag powder, 150-200 parts of superfine Portland cement, 100-180 parts of red mud powder, 60-100 parts of densified silica fume, 40-80 parts of whisker fibers, 20-30 parts of a retarder, 15-25 parts of a thickening agent, 5-10 parts of a synergist and 5-10 parts of a plastic retaining agent, wherein the composite steel slag powder comprises steel slag and calcium oxide. According to the invention, the construction requirements on the sprayed concrete in a water-rich environment can be met, the early strength of the sprayed concrete can be obviously improved, the construction speed is accelerated, surrounding rocks are quickly and effectively protected and reinforced, and the rebound rate of the sprayed concrete is reduced.
本发明公开了一种喷射混凝土用功能性掺合料、制备方法及喷射混凝土。包括下列重量份的组分：复合钢渣粉400～450份、超细硅酸盐水泥150～200份、赤泥粉100～180份、加密硅灰60～100份、晶须纤维40～80份、缓凝剂20～30份、增稠剂15～25份、增效剂5～10份、保塑剂5～10份；其中，所述复合钢渣粉包括钢渣与氧化钙。本发明能够满足富水环境下对喷射混凝土的施工要求，能够显著提高喷射混凝土早期强度、加快施工速度、快速有效地对围岩进行保护和加固、降低喷射混凝土回弹率。
Functional admixture for sprayed concrete, preparation method and sprayed concrete
The invention discloses a functional admixture for sprayed concrete, a preparation method and the sprayed concrete. Comprising the following components in parts by weight: 400-450 parts of composite steel slag powder, 150-200 parts of superfine Portland cement, 100-180 parts of red mud powder, 60-100 parts of densified silica fume, 40-80 parts of whisker fibers, 20-30 parts of a retarder, 15-25 parts of a thickening agent, 5-10 parts of a synergist and 5-10 parts of a plastic retaining agent, wherein the composite steel slag powder comprises steel slag and calcium oxide. According to the invention, the construction requirements on the sprayed concrete in a water-rich environment can be met, the early strength of the sprayed concrete can be obviously improved, the construction speed is accelerated, surrounding rocks are quickly and effectively protected and reinforced, and the rebound rate of the sprayed concrete is reduced.
本发明公开了一种喷射混凝土用功能性掺合料、制备方法及喷射混凝土。包括下列重量份的组分：复合钢渣粉400～450份、超细硅酸盐水泥150～200份、赤泥粉100～180份、加密硅灰60～100份、晶须纤维40～80份、缓凝剂20～30份、增稠剂15～25份、增效剂5～10份、保塑剂5～10份；其中，所述复合钢渣粉包括钢渣与氧化钙。本发明能够满足富水环境下对喷射混凝土的施工要求，能够显著提高喷射混凝土早期强度、加快施工速度、快速有效地对围岩进行保护和加固、降低喷射混凝土回弹率。
Functional admixture for sprayed concrete, preparation method and sprayed concrete
喷射混凝土用功能性掺合料、制备方法及喷射混凝土
ZHANG QIANG (author) / LIANG WEI (author) / CHEN YUYING (author) / CHEN JIALIANG (author) / DONG PENG (author) / WAN HAILUN (author) / XU QING (author) / LI YANG (author) / CHEN YONGSHENG (author) / PENG LIWEN (author)
2024-05-17
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024