A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Lining concrete for large-section tunnel and preparation method thereof
The invention discloses lining concrete for a large-section tunnel and a preparation method of the lining concrete, and belongs to the technical field of building materials. The lining concrete is prepared from the following components in parts by weight: 300 to 400 parts of cement, 40 to 50 parts of fly ash, 40 to 70 parts of mineral powder, 600 to 650 parts of fine aggregate, 1050 to 1150 parts of coarse aggregate, 150 to 200 parts of water, 7 to 11 parts of water reducing agent and 5 to 10 parts of air entraining agent, the water reducing agent is prepared from the following raw materials in parts by weight: 100 parts of a polyether macromonomer, 5 to 7 parts of an unsaturated carboxylic acid monomer, 4 to 6 parts of methyl 3, 4-dihydroxybenzoate, 2 to 4 parts of unsaturated amide, 1.0 to 2.0 parts of an oxidizing agent, 0.5 to 1.0 part of a reducing agent, 0.5 to 1.5 parts of a chain transfer agent and 300 to 350 parts of deionized water. The lining concrete disclosed by the invention is low in bleeding rate and good in fluidity, the slump is not lost within 1 hour, bubbles are favorably discharged, and the problems of bleeding, voids and pitted surfaces, air holes and bubbles of tunnel lining concrete in the prior art can be solved.
本发明公开了一种大断面隧道用衬砌混凝土及其制备方法，属于建筑材料技术领域。所述衬砌混凝土包括以下重量份数的各组分：水泥300～400份、粉煤灰40～50份、矿粉40～70份、细骨料600～650份、粗骨料1050～1150份、水150～200份、减水剂7～11份、引气剂5～10份；所述减水剂包括以下重量份数的各原料：聚醚大单体100份、不饱和羧酸单体5～7份、3,4‑二羟基苯甲酸甲酯4～6份、不饱和酰胺2～4份、氧化剂1.0～2.0份、还原剂0.5～1.0份、链转移剂0.5～1.5份、去离子水300～350份。本发明的衬砌混凝土泌水率低，同时流动性好，坍落度1h不损失，有利于气泡的排出，可解决现有技术中隧道衬砌混凝土出现泌水、蜂窝麻面、气孔、水泡的问题。
Lining concrete for large-section tunnel and preparation method thereof
The invention discloses lining concrete for a large-section tunnel and a preparation method of the lining concrete, and belongs to the technical field of building materials. The lining concrete is prepared from the following components in parts by weight: 300 to 400 parts of cement, 40 to 50 parts of fly ash, 40 to 70 parts of mineral powder, 600 to 650 parts of fine aggregate, 1050 to 1150 parts of coarse aggregate, 150 to 200 parts of water, 7 to 11 parts of water reducing agent and 5 to 10 parts of air entraining agent, the water reducing agent is prepared from the following raw materials in parts by weight: 100 parts of a polyether macromonomer, 5 to 7 parts of an unsaturated carboxylic acid monomer, 4 to 6 parts of methyl 3, 4-dihydroxybenzoate, 2 to 4 parts of unsaturated amide, 1.0 to 2.0 parts of an oxidizing agent, 0.5 to 1.0 part of a reducing agent, 0.5 to 1.5 parts of a chain transfer agent and 300 to 350 parts of deionized water. The lining concrete disclosed by the invention is low in bleeding rate and good in fluidity, the slump is not lost within 1 hour, bubbles are favorably discharged, and the problems of bleeding, voids and pitted surfaces, air holes and bubbles of tunnel lining concrete in the prior art can be solved.
本发明公开了一种大断面隧道用衬砌混凝土及其制备方法，属于建筑材料技术领域。所述衬砌混凝土包括以下重量份数的各组分：水泥300～400份、粉煤灰40～50份、矿粉40～70份、细骨料600～650份、粗骨料1050～1150份、水150～200份、减水剂7～11份、引气剂5～10份；所述减水剂包括以下重量份数的各原料：聚醚大单体100份、不饱和羧酸单体5～7份、3,4‑二羟基苯甲酸甲酯4～6份、不饱和酰胺2～4份、氧化剂1.0～2.0份、还原剂0.5～1.0份、链转移剂0.5～1.5份、去离子水300～350份。本发明的衬砌混凝土泌水率低，同时流动性好，坍落度1h不损失，有利于气泡的排出，可解决现有技术中隧道衬砌混凝土出现泌水、蜂窝麻面、气孔、水泡的问题。
Lining concrete for large-section tunnel and preparation method thereof
一种大断面隧道用衬砌混凝土及其制备方法
LI JIAZHENG (author) / TANG MAOGANG (author) / ZHOU SHIHUA (author) / XIA YONG (author) / LI MINGXIA (author) / ZHANG JIANFENG (author) / CUI TENGZHOU (author) / LIU XIAOJUN (author) / ZHAO HENG (author) / QI WENTAN (author)
2023-09-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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