A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Semi-rigid base crack trenchless grouting repair material and preparation method thereof
The invention relates to a semi-rigid base crack trenchless grouting repair material and a preparation method thereof. The semi-rigid base crack trenchless grouting repair material comprises the following components in parts by weight: 70-100 parts of a two-component polyurethane prepolymer, 10-15 parts of diatomite powder, 150-200 parts of cement, 60-80 parts of water and 1.0-2.0 parts of a retarder. The diatomite, the cement and the polyurethane form a network interpenetrating multi-element composite structure, so that the compactness and the bonding strength of the splicing interface part of the new pavement base layer and the old pavement base layer are favorably improved. The activity of the diatomite can be excited after calcination and ball milling, the average particle size of the calcined and ball-milled diatomite becomes smaller, the particle size distribution is wide, the specific surface area becomes larger, the faster the reaction speed with calcium hydroxide in cement paste is, the more hydration products in unit time are, and the quantity of hydrated calcium silicate in cement paste is increased. The calcium-silicon ratio and the content of calcium hydroxide are reduced, and the strength of cement is improved.
本发明涉及一种半刚性基层裂缝非开挖注浆修补材料及其制备方法，按重量份计包括如下组分，双组份聚氨酯预聚体70～100份，硅藻土粉末10～15份，水泥150～200份，水60～80份，缓凝剂1.0～2.0份。硅藻土、水泥、聚氨酯形成网络互穿的多元复合结构，有利于提高新旧路面基层拼接界面部位的致密性和粘结强度。硅藻土通过煅烧和球磨后能够激发出硅藻土的活性，煅烧和球磨后的硅藻土平均粒径变小，粒径分布广泛，比表面积变大，与水泥净浆中氢氧化钙的反应速度越快，单位时间内的水化产物越多，提高水泥浆体中水化硅酸钙的数量，减少钙硅比和氢氧化钙的含量，提高水泥的强度。
Semi-rigid base crack trenchless grouting repair material and preparation method thereof
The invention relates to a semi-rigid base crack trenchless grouting repair material and a preparation method thereof. The semi-rigid base crack trenchless grouting repair material comprises the following components in parts by weight: 70-100 parts of a two-component polyurethane prepolymer, 10-15 parts of diatomite powder, 150-200 parts of cement, 60-80 parts of water and 1.0-2.0 parts of a retarder. The diatomite, the cement and the polyurethane form a network interpenetrating multi-element composite structure, so that the compactness and the bonding strength of the splicing interface part of the new pavement base layer and the old pavement base layer are favorably improved. The activity of the diatomite can be excited after calcination and ball milling, the average particle size of the calcined and ball-milled diatomite becomes smaller, the particle size distribution is wide, the specific surface area becomes larger, the faster the reaction speed with calcium hydroxide in cement paste is, the more hydration products in unit time are, and the quantity of hydrated calcium silicate in cement paste is increased. The calcium-silicon ratio and the content of calcium hydroxide are reduced, and the strength of cement is improved.
本发明涉及一种半刚性基层裂缝非开挖注浆修补材料及其制备方法，按重量份计包括如下组分，双组份聚氨酯预聚体70～100份，硅藻土粉末10～15份，水泥150～200份，水60～80份，缓凝剂1.0～2.0份。硅藻土、水泥、聚氨酯形成网络互穿的多元复合结构，有利于提高新旧路面基层拼接界面部位的致密性和粘结强度。硅藻土通过煅烧和球磨后能够激发出硅藻土的活性，煅烧和球磨后的硅藻土平均粒径变小，粒径分布广泛，比表面积变大，与水泥净浆中氢氧化钙的反应速度越快，单位时间内的水化产物越多，提高水泥浆体中水化硅酸钙的数量，减少钙硅比和氢氧化钙的含量，提高水泥的强度。
Semi-rigid base crack trenchless grouting repair material and preparation method thereof
一种半刚性基层裂缝非开挖注浆修补材料及其制备方法
GUAN YONGSHENG (author) / JIN GUANGLAI (author) / CAI WENLONG (author) / LIU HAITING (author) / MA TAO (author) / LYU HAO (author)
2021-04-20
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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