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A platform for research: civil engineering, architecture and urbanism
Sprayed concrete and preparation method thereof
The invention discloses sprayed concrete and a preparation method thereof, and belongs to the technical field of constructional engineering materials. The sprayed concrete provided by the invention comprises the following raw materials in parts by weight: 16-20 parts of sulphoaluminate cement; 2-6 parts of modified gypsum; 1-3 parts of an admixture; 38 to 44 parts of sand; 32 to 38 parts of stone; 0.15 to 0.3 part of a water reducing agent; and 8-12 parts of water. The calcination temperature of the selected sulphoaluminate cement is 200 DEG C lower than that of ordinary Portland cement, the energy consumption is low, the emission of carbon dioxide is small, and the range of raw materials is wide. Therefore, the sprayed concrete prepared from the sulphoaluminate cement is green and environment-friendly, has certain economic advantages, effectively reduces the production cost, and is beneficial to environmental protection and energy conservation of enterprises. In addition, the modified gypsum is added to control the setting time of the sprayed concrete, so that the sprayed concrete is convenient to use, no alkali-containing accelerator harmful to human bodies is added, and the sprayed concrete has the advantages of early strength, good durability and usability, high later strength growth rate and the like.
本发明公开了一种喷射混凝土及其制备方法，属于建筑工程材料技术领域。本发明的喷射混凝土包括以下重量份的原料：硫铝酸盐水泥16～20份；改性石膏2～6份；掺和材1～3份；砂38～44份；石子32～38份；减水剂0.15～0.3份；水8～12份。本发明选用的硫铝酸盐水泥，其煅烧温度比普通硅酸盐水泥低200℃，能量消耗低、二氧化碳排放量少、原材料取材范围广。因此由硫铝酸盐水泥制备的喷射混凝土既绿色环保，又具有一定的经济优势，有效降低生产成本，还利于企业环保节能。除此之外，通过加入改性石膏，以控制喷射混凝土的凝结时间，使用方便，且不再添加对人体有害的含碱速凝剂，具有早强、良好的耐久性和使用性、后期强度增长率高等优点。
Sprayed concrete and preparation method thereof
The invention discloses sprayed concrete and a preparation method thereof, and belongs to the technical field of constructional engineering materials. The sprayed concrete provided by the invention comprises the following raw materials in parts by weight: 16-20 parts of sulphoaluminate cement; 2-6 parts of modified gypsum; 1-3 parts of an admixture; 38 to 44 parts of sand; 32 to 38 parts of stone; 0.15 to 0.3 part of a water reducing agent; and 8-12 parts of water. The calcination temperature of the selected sulphoaluminate cement is 200 DEG C lower than that of ordinary Portland cement, the energy consumption is low, the emission of carbon dioxide is small, and the range of raw materials is wide. Therefore, the sprayed concrete prepared from the sulphoaluminate cement is green and environment-friendly, has certain economic advantages, effectively reduces the production cost, and is beneficial to environmental protection and energy conservation of enterprises. In addition, the modified gypsum is added to control the setting time of the sprayed concrete, so that the sprayed concrete is convenient to use, no alkali-containing accelerator harmful to human bodies is added, and the sprayed concrete has the advantages of early strength, good durability and usability, high later strength growth rate and the like.
本发明公开了一种喷射混凝土及其制备方法，属于建筑工程材料技术领域。本发明的喷射混凝土包括以下重量份的原料：硫铝酸盐水泥16～20份；改性石膏2～6份；掺和材1～3份；砂38～44份；石子32～38份；减水剂0.15～0.3份；水8～12份。本发明选用的硫铝酸盐水泥，其煅烧温度比普通硅酸盐水泥低200℃，能量消耗低、二氧化碳排放量少、原材料取材范围广。因此由硫铝酸盐水泥制备的喷射混凝土既绿色环保，又具有一定的经济优势，有效降低生产成本，还利于企业环保节能。除此之外，通过加入改性石膏，以控制喷射混凝土的凝结时间，使用方便，且不再添加对人体有害的含碱速凝剂，具有早强、良好的耐久性和使用性、后期强度增长率高等优点。
Sprayed concrete and preparation method thereof
一种喷射混凝土及其制备方法
LI WENJIN (author) / CHEN XUEMEI (author) / YANG HUAN (author) / YU QINGHUA (author) / ZHOU YANHONG (author) / ZHANG YUHANG (author) / ZHANG LINGZHI (author)
2022-09-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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