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A platform for research: civil engineering, architecture and urbanism
Quick-setting high-strength type wall post-grouting material
The invention discloses a quick-setting high-strength type wall post-grouting material, which is prepared from the following raw materials in parts by weight: 100 to 200 parts of cement, 20 to 30 parts of sulphoaluminate cement, 200 to 300 parts of modified fly ash, 50 to 100 parts of bentonite, 1000 to 1200 parts of sand, 300 to 400 parts of water, 3 to 10 parts of water reducing agents, 0.1 to 0.3 part of triethanolamine and 0.1 to 0.3 part of lithium carbonate. The sulphoaluminate cement is used for replacing part of ordinary Portland cement, the calcium bentonite is used for replacing traditional sodium bentonite, and triethanolamine is added, so that the setting time is greatly shortened and the early strength is improved under the condition of ensuring good flowability of the slurry, and the slurry is simple in ingredients, low in cost and excellent in comprehensive performance. The problems of duct piece floating and ground surface settlement caused by long setting time and low early strength of single-liquid hard slurry are solved, and normal tunneling of shield construction is guaranteed.
本发明公开了一种快凝高强型壁后注浆材料，包括以下重量份的原料：水泥100‑200份、硫铝酸盐水泥20‑30份、改性粉煤灰200‑300份、膨润土50‑100份、砂1000‑1200份、水300‑400份、减水剂3‑10份、三乙醇胺0.1‑0.3份、碳酸锂0.1‑0.3份。本发明通过硫铝酸盐水泥替换部分普通硅酸盐水泥，钙基膨润土代替传统的钠基膨润土，并加入三乙醇胺的方法，在保证浆液流动性良好的条件下，大大缩短了其凝结时间，提高早期强度，配料简单、成本低廉、综合性能佳。本发明解决了单液硬性浆凝结时间长、早期强度低造成的管片上浮、地表沉降问题，保证了盾构施工的正常掘进。
Quick-setting high-strength type wall post-grouting material
The invention discloses a quick-setting high-strength type wall post-grouting material, which is prepared from the following raw materials in parts by weight: 100 to 200 parts of cement, 20 to 30 parts of sulphoaluminate cement, 200 to 300 parts of modified fly ash, 50 to 100 parts of bentonite, 1000 to 1200 parts of sand, 300 to 400 parts of water, 3 to 10 parts of water reducing agents, 0.1 to 0.3 part of triethanolamine and 0.1 to 0.3 part of lithium carbonate. The sulphoaluminate cement is used for replacing part of ordinary Portland cement, the calcium bentonite is used for replacing traditional sodium bentonite, and triethanolamine is added, so that the setting time is greatly shortened and the early strength is improved under the condition of ensuring good flowability of the slurry, and the slurry is simple in ingredients, low in cost and excellent in comprehensive performance. The problems of duct piece floating and ground surface settlement caused by long setting time and low early strength of single-liquid hard slurry are solved, and normal tunneling of shield construction is guaranteed.
本发明公开了一种快凝高强型壁后注浆材料，包括以下重量份的原料：水泥100‑200份、硫铝酸盐水泥20‑30份、改性粉煤灰200‑300份、膨润土50‑100份、砂1000‑1200份、水300‑400份、减水剂3‑10份、三乙醇胺0.1‑0.3份、碳酸锂0.1‑0.3份。本发明通过硫铝酸盐水泥替换部分普通硅酸盐水泥，钙基膨润土代替传统的钠基膨润土，并加入三乙醇胺的方法，在保证浆液流动性良好的条件下，大大缩短了其凝结时间，提高早期强度，配料简单、成本低廉、综合性能佳。本发明解决了单液硬性浆凝结时间长、早期强度低造成的管片上浮、地表沉降问题，保证了盾构施工的正常掘进。
Quick-setting high-strength type wall post-grouting material
一种快凝高强型壁后注浆材料
WANG YISHENG (author) / ZHAO XIAOPENG (author) / MIN FANLU (author) / ZHANG JIANFENG (author) / XU WENLI (author) / JIANG SU (author) / WANG DENGFENG (author) / SONG BANGHONG (author) / ZHU WENCHAO (author)
2022-07-12
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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