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A platform for research: civil engineering, architecture and urbanism
Large-flow-state high-dispersion-resistance cast-in-place pile concrete containing machine-made sand dust collection stone powder
The invention belongs to the technical field of building materials, and discloses large-flow-state high-dispersion-resistance cast-in-place pile concrete containing machine-made sand dust collection stone powder, which is characterized in that triisopropanolamine and triethanolamine are used as dispersion and ionic dissolution promoters; triisopropanolamine and triethanolamine are promoted to be strongly adsorbed on the surface of the machine-made sand dust collection stone powder through an aging process, the reaction activity of the machine-made sand dust collection stone powder is improved, complexing chemical bonds between triisopropanolamine and triethanolamine and dissolved-out ions such as calcium and silicon are activated through mechanical force, and the dispersity among stone powder particles is improved. When the modified dust collection stone powder is used for preparing cast-in-place pile concrete, ions such as calcium and silicon in the modified dust collection stone powder participate in cement hydration, and the concrete strength is improved. In addition, the nano silicon dioxide is compounded and doped to promote cement hydration, and the cohesiveness and the water-retaining property of the prepared cast-in-place pile concrete can be effectively improved, so that the underwater dispersion resistance of the cast-in-place pile concrete is greatly improved. And the preparation method has important significance on preparation of large-flow-state high-dispersion-resistance cast-in-place pile concrete.
本发明属于建筑材料技术领域，本发明公开了一种含机制砂收尘石粉的大流态高抗分散性灌注桩混凝土，本发明采用三异丙醇胺和三乙醇胺作为分散和离子促溶剂，通过陈化工艺促使三异丙醇胺和三乙醇胺强吸附于机制砂收尘石粉表面，提高机制砂收尘石粉反应活性，再采用机械力激活三异丙醇胺和三乙醇胺与溶出的钙、硅等离子之间的络合化学键，提高石粉颗粒间的分散性。用于制备灌注桩混凝土时，改性收尘石粉中的钙、硅等离子参与水泥水化，提高混凝土强度。此外，本发明复配掺入纳米二氧化硅促进水泥水化，且可以有效改善所配制的灌注桩混凝土的粘聚性和保水性，从而大大提高其抗水下分散性能。对制备大流态高抗分散性灌注桩混凝土具有重要意义。
Large-flow-state high-dispersion-resistance cast-in-place pile concrete containing machine-made sand dust collection stone powder
The invention belongs to the technical field of building materials, and discloses large-flow-state high-dispersion-resistance cast-in-place pile concrete containing machine-made sand dust collection stone powder, which is characterized in that triisopropanolamine and triethanolamine are used as dispersion and ionic dissolution promoters; triisopropanolamine and triethanolamine are promoted to be strongly adsorbed on the surface of the machine-made sand dust collection stone powder through an aging process, the reaction activity of the machine-made sand dust collection stone powder is improved, complexing chemical bonds between triisopropanolamine and triethanolamine and dissolved-out ions such as calcium and silicon are activated through mechanical force, and the dispersity among stone powder particles is improved. When the modified dust collection stone powder is used for preparing cast-in-place pile concrete, ions such as calcium and silicon in the modified dust collection stone powder participate in cement hydration, and the concrete strength is improved. In addition, the nano silicon dioxide is compounded and doped to promote cement hydration, and the cohesiveness and the water-retaining property of the prepared cast-in-place pile concrete can be effectively improved, so that the underwater dispersion resistance of the cast-in-place pile concrete is greatly improved. And the preparation method has important significance on preparation of large-flow-state high-dispersion-resistance cast-in-place pile concrete.
本发明属于建筑材料技术领域，本发明公开了一种含机制砂收尘石粉的大流态高抗分散性灌注桩混凝土，本发明采用三异丙醇胺和三乙醇胺作为分散和离子促溶剂，通过陈化工艺促使三异丙醇胺和三乙醇胺强吸附于机制砂收尘石粉表面，提高机制砂收尘石粉反应活性，再采用机械力激活三异丙醇胺和三乙醇胺与溶出的钙、硅等离子之间的络合化学键，提高石粉颗粒间的分散性。用于制备灌注桩混凝土时，改性收尘石粉中的钙、硅等离子参与水泥水化，提高混凝土强度。此外，本发明复配掺入纳米二氧化硅促进水泥水化，且可以有效改善所配制的灌注桩混凝土的粘聚性和保水性，从而大大提高其抗水下分散性能。对制备大流态高抗分散性灌注桩混凝土具有重要意义。
Large-flow-state high-dispersion-resistance cast-in-place pile concrete containing machine-made sand dust collection stone powder
一种含机制砂收尘石粉的大流态高抗分散性灌注桩混凝土
XU ZHIHUA (author) / DENG JUNSHUANG (author) / WANG XIAOHONG (author) / LI XIYOU (author) / LIU XINCAI (author) / LI GUANG (author) / YU HUI (author)
2022-03-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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