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Ultrahigh-ductility cement-based composite material for impervious reinforcement and preparation method of material
The invention discloses an ultrahigh-ductility cement-based composite material for impervious reinforcement and a preparation method of the material. The cement-based composite material is prepared from 100 parts of cement, 200-400 parts of fly ash, 60-200 parts of fine sand, 1-40 parts of hydrophobic aggregate, 3-10 parts of a water reducing agent, 5-12 parts of synthetic fiber and 70-140 parts of water. The preparation method comprises the steps: mixing firstly, the cement, the fly ash, the fine sand and the hydrophobic aggregate to be mix; and adding a water reducing agent into water, completely dissolving, uniformly mixing with the dry material, and adding the synthetic fiber while stirring, so that the synthetic fiber is uniformly distributed in the mixture. The proportion of the fly ash is large, the limit strain capacity of the material can be effectively improved, the crack width during cracking is obviously smaller than that of a common fiber reinforced cement-based material, and meanwhile, the hydrophobic aggregate can play a repulsive role in water permeating into cracks to reduce the permeability of fine and dense cracks; the cement-based composite material is ensured to maintain low permeability under large deformation, and has excellent anti-permeability and reinforcement effects.
本发明公开了一种用于抗渗加固的超高延性水泥基复合材料及其制备方法，该水泥基复合材料由100份水泥、200–400份粉煤灰、60–200份细砂、1–40份憎水骨料、3–10份减水剂、5–12份合成纤维和70–140份水组成，先将水泥、粉煤灰、细砂和憎水骨料混合均匀，减水剂加入到水中完全溶解后与上述干料混合均匀，边搅拌边加入合成纤维使其均匀分布在拌合物中。本发明中粉煤灰占比大，可有效提升材料的极限应变能力，开裂时裂缝宽度明显小于普通纤维增强水泥基材料，同时憎水骨料可对渗入裂缝中的水起到排斥作用来减小细密裂缝渗透率，保证该水泥基复合材料在大变形下保持较低的渗透率，具有出色的抗渗加固作用。
Ultrahigh-ductility cement-based composite material for impervious reinforcement and preparation method of material
The invention discloses an ultrahigh-ductility cement-based composite material for impervious reinforcement and a preparation method of the material. The cement-based composite material is prepared from 100 parts of cement, 200-400 parts of fly ash, 60-200 parts of fine sand, 1-40 parts of hydrophobic aggregate, 3-10 parts of a water reducing agent, 5-12 parts of synthetic fiber and 70-140 parts of water. The preparation method comprises the steps: mixing firstly, the cement, the fly ash, the fine sand and the hydrophobic aggregate to be mix; and adding a water reducing agent into water, completely dissolving, uniformly mixing with the dry material, and adding the synthetic fiber while stirring, so that the synthetic fiber is uniformly distributed in the mixture. The proportion of the fly ash is large, the limit strain capacity of the material can be effectively improved, the crack width during cracking is obviously smaller than that of a common fiber reinforced cement-based material, and meanwhile, the hydrophobic aggregate can play a repulsive role in water permeating into cracks to reduce the permeability of fine and dense cracks; the cement-based composite material is ensured to maintain low permeability under large deformation, and has excellent anti-permeability and reinforcement effects.
本发明公开了一种用于抗渗加固的超高延性水泥基复合材料及其制备方法，该水泥基复合材料由100份水泥、200–400份粉煤灰、60–200份细砂、1–40份憎水骨料、3–10份减水剂、5–12份合成纤维和70–140份水组成，先将水泥、粉煤灰、细砂和憎水骨料混合均匀，减水剂加入到水中完全溶解后与上述干料混合均匀，边搅拌边加入合成纤维使其均匀分布在拌合物中。本发明中粉煤灰占比大，可有效提升材料的极限应变能力，开裂时裂缝宽度明显小于普通纤维增强水泥基材料，同时憎水骨料可对渗入裂缝中的水起到排斥作用来减小细密裂缝渗透率，保证该水泥基复合材料在大变形下保持较低的渗透率，具有出色的抗渗加固作用。
Ultrahigh-ductility cement-based composite material for impervious reinforcement and preparation method of material
一种用于抗渗加固的超高延性水泥基复合材料及其制备方法
WANG ZHUOLIN (author) / ZHAO YUXIANG (author) / ZHANG YONGQUN (author) / CHEN XI (author) / ZHENG SHIJU (author) / SHI HAO (author)
2021-12-21
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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