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Hydraulic shotcrete containing aldehyde modified polymer and construction process
The invention discloses hydraulic shotcrete containing an aldehyde modified polymer and a construction process, which can effectively solve the problems that the hydraulic shotcrete is easy to bubble, peel and fall off due to the influence of complex environmental factors such as dry-wet cycle and the like. According to the method, the mixing proportion of hydraulic concrete is designed and optimized, an additive with the surface modified by propenyl quaternary ammonium salt is prepared, a cross-linked network is formed by the additive and macromolecular quaternary ammonium salt under the action of cation-pi bonds, and a three-dimensional framework is built in cooperation with nano silicon-calcium oxide particles; the shotcrete is suitable for construction under complex geological environment conditions such as surrounding rock alteration, low strength, dry-wet cycle and rich water, the problems of large rebound amount, large cement consumption, low early strength, later strength attenuation, strong corrosion, poor durability and the like of conventional shotcrete can be effectively solved, the shotcrete is economical and environmentally friendly, the construction efficiency is improved, and the construction cost is reduced. After sprayed concrete is applied, the stability of surrounding rock can be guaranteed, and the excavation construction safety of the hydraulic tunnel is ensured.
本发明公开了一种含醛基化改性聚合物的水工喷射混凝土及施工工艺，可以有效解决水工混凝土受干湿循环等复杂环境因素影响，易出现鼓泡、起皮和脱落的问题。本方法设计优化水工混凝土配合比，并制备了一种表面采用丙烯基季铵盐改性的外加剂，通过阳离子‑π键作用与高分子季铵盐形成交联网络，配合纳米硅钙氧化物粒子搭建三维骨架，使喷射混凝土适宜在围岩蚀变、强度低、干湿循环、富水等复杂地质环境条件下施工，能够有效解决常规喷射混凝土回弹量大、水泥用量大、早期强度低、后期强度衰减、强腐蚀、耐久性差等问题，经济友好、绿色环保的同时，提高了施工效率，喷射混凝土施作后，能够保障围岩的稳定，确保水工隧洞开挖施工安全。
Hydraulic shotcrete containing aldehyde modified polymer and construction process
The invention discloses hydraulic shotcrete containing an aldehyde modified polymer and a construction process, which can effectively solve the problems that the hydraulic shotcrete is easy to bubble, peel and fall off due to the influence of complex environmental factors such as dry-wet cycle and the like. According to the method, the mixing proportion of hydraulic concrete is designed and optimized, an additive with the surface modified by propenyl quaternary ammonium salt is prepared, a cross-linked network is formed by the additive and macromolecular quaternary ammonium salt under the action of cation-pi bonds, and a three-dimensional framework is built in cooperation with nano silicon-calcium oxide particles; the shotcrete is suitable for construction under complex geological environment conditions such as surrounding rock alteration, low strength, dry-wet cycle and rich water, the problems of large rebound amount, large cement consumption, low early strength, later strength attenuation, strong corrosion, poor durability and the like of conventional shotcrete can be effectively solved, the shotcrete is economical and environmentally friendly, the construction efficiency is improved, and the construction cost is reduced. After sprayed concrete is applied, the stability of surrounding rock can be guaranteed, and the excavation construction safety of the hydraulic tunnel is ensured.
本发明公开了一种含醛基化改性聚合物的水工喷射混凝土及施工工艺，可以有效解决水工混凝土受干湿循环等复杂环境因素影响，易出现鼓泡、起皮和脱落的问题。本方法设计优化水工混凝土配合比，并制备了一种表面采用丙烯基季铵盐改性的外加剂，通过阳离子‑π键作用与高分子季铵盐形成交联网络，配合纳米硅钙氧化物粒子搭建三维骨架，使喷射混凝土适宜在围岩蚀变、强度低、干湿循环、富水等复杂地质环境条件下施工，能够有效解决常规喷射混凝土回弹量大、水泥用量大、早期强度低、后期强度衰减、强腐蚀、耐久性差等问题，经济友好、绿色环保的同时，提高了施工效率，喷射混凝土施作后，能够保障围岩的稳定，确保水工隧洞开挖施工安全。
Hydraulic shotcrete containing aldehyde modified polymer and construction process
一种含醛基化改性聚合物的水工喷射混凝土及施工工艺
PU PINGXIN (author) / DING GUOJIE (author) / LI XIAOPO (author) / CHEN TAO (author) / ZHU YAQIANG (author) / WEN ZHEHAO (author) / LI MENG (author) / WEI XIAOLING (author) / FAN JIE (author) / QIU HONGZHI (author)
2024-11-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
E02D
FOUNDATIONS
,
Gründungen
/
E21D
SHAFTS
,
Schächte
EXPERIENCES WITH POLYMER-MODIFIED SHOTCRETE
| British Library Conference Proceedings | 2009
Polymer-cement shotcrete at the construction of the Dangara hydraulic tunnel
| Online Contents | 1988
Polymer-cement shotcrete at the construction of the Dangara hydraulic tunnel
| Springer Verlag | 1988
| European Patent Office | 2021