Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Anti-cracking recycled concrete and preparation method thereof
The invention belongs to the technical field of concrete, and particularly relates to anti-cracking recycled concrete and a preparation method thereof. According to the preparation method, intercalation modification is carried out on metakaolin by adopting hydrophobic silicon dioxide aerogel, micromolecular hydrophobic silicon dioxide aerogel is inserted into a layered structure of metakaolin, sothat the interlayer spacing of metakaolin is increased, and by utilizing the light, porous and low-thermal-conductivity properties of silicon dioxide aerogel and combining the high volcanic ash effectof metakaolin, modified metakaolin is prepared and added into concrete, so that the compression resistance, bending resistance, crack resistance and the like of a concrete structure can be remarkablyimproved.
本发明属于混凝土技术领域，具体的，涉及一种抗开裂再生混凝土及其制备方法；本发明采用疏水二氧化硅气凝胶对偏高岭土进行插层改性，小分子的疏水二氧化硅气凝胶插入偏高岭土的层状结构之间，使偏高岭土层间距增大，利用二氧化硅气凝胶质轻、多孔、低导热性能，结合偏高岭土的高火山灰效应，制备得到一种改性偏高岭土，将该改性偏高岭土添加到混凝土中，可显著提高混凝土结构的抗压、抗弯、抗裂等性能。
Anti-cracking recycled concrete and preparation method thereof
The invention belongs to the technical field of concrete, and particularly relates to anti-cracking recycled concrete and a preparation method thereof. According to the preparation method, intercalation modification is carried out on metakaolin by adopting hydrophobic silicon dioxide aerogel, micromolecular hydrophobic silicon dioxide aerogel is inserted into a layered structure of metakaolin, sothat the interlayer spacing of metakaolin is increased, and by utilizing the light, porous and low-thermal-conductivity properties of silicon dioxide aerogel and combining the high volcanic ash effectof metakaolin, modified metakaolin is prepared and added into concrete, so that the compression resistance, bending resistance, crack resistance and the like of a concrete structure can be remarkablyimproved.
本发明属于混凝土技术领域，具体的，涉及一种抗开裂再生混凝土及其制备方法；本发明采用疏水二氧化硅气凝胶对偏高岭土进行插层改性，小分子的疏水二氧化硅气凝胶插入偏高岭土的层状结构之间，使偏高岭土层间距增大，利用二氧化硅气凝胶质轻、多孔、低导热性能，结合偏高岭土的高火山灰效应，制备得到一种改性偏高岭土，将该改性偏高岭土添加到混凝土中，可显著提高混凝土结构的抗压、抗弯、抗裂等性能。
Anti-cracking recycled concrete and preparation method thereof
一种抗开裂再生混凝土及其制备方法
PENG CAIDA (Autor:in)
26.02.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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