A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Modified recycled aggregate and preparation method thereof, and pervious concrete and preparation method thereof
The invention relates to the technical field of concrete, in particular to a modified recycled aggregate and a preparation method thereof and pervious concrete and a preparation method thereof. The preparation method of the modified recycled aggregate provided by the invention comprises the following steps: putting the recycled aggregate into an aqueous emulsion of methyltriethoxysilane, and modifying to obtain the modified recycled aggregate. The modified recycled aggregate provided by the invention is low in water absorption rate, when the modified recycled aggregate prepared by the method is used as an aggregate to prepare the pervious concrete, due to the fact that the surface of the modified recycled aggregate is provided with ae silane film with the hydrophobic effect, the situationthat the local water-cement ratio is increased due to the fact that water in cement paste is gathered to the surface of the aggregate can be avoided, a concrete interface transition area is more compact, and the frost resistance and strength of the pervious concrete are improved.
本发明涉及混凝土技术领域，具体涉及一种改性再生骨料及其制备方法和透水混凝土及其制备方法。本发明提供的改性再生骨料的制备方法，包括以下步骤：将再生骨料置于甲基三乙氧基硅烷的含水乳液中，进行改性，得到改性再生骨料。本发明提供的改性再生骨料吸水率低，以本发明制备的改性再生骨料为骨料制备透水混凝土时，由于改性再生骨料表面具有憎水作用的硅烷膜，能够避免由于水泥浆中的水向骨料表面聚集导致的局部水灰比增高，使得混凝土界面过渡区更加密实，提高透水混凝土的抗冻性和强度。
Modified recycled aggregate and preparation method thereof, and pervious concrete and preparation method thereof
The invention relates to the technical field of concrete, in particular to a modified recycled aggregate and a preparation method thereof and pervious concrete and a preparation method thereof. The preparation method of the modified recycled aggregate provided by the invention comprises the following steps: putting the recycled aggregate into an aqueous emulsion of methyltriethoxysilane, and modifying to obtain the modified recycled aggregate. The modified recycled aggregate provided by the invention is low in water absorption rate, when the modified recycled aggregate prepared by the method is used as an aggregate to prepare the pervious concrete, due to the fact that the surface of the modified recycled aggregate is provided with ae silane film with the hydrophobic effect, the situationthat the local water-cement ratio is increased due to the fact that water in cement paste is gathered to the surface of the aggregate can be avoided, a concrete interface transition area is more compact, and the frost resistance and strength of the pervious concrete are improved.
本发明涉及混凝土技术领域，具体涉及一种改性再生骨料及其制备方法和透水混凝土及其制备方法。本发明提供的改性再生骨料的制备方法，包括以下步骤：将再生骨料置于甲基三乙氧基硅烷的含水乳液中，进行改性，得到改性再生骨料。本发明提供的改性再生骨料吸水率低，以本发明制备的改性再生骨料为骨料制备透水混凝土时，由于改性再生骨料表面具有憎水作用的硅烷膜，能够避免由于水泥浆中的水向骨料表面聚集导致的局部水灰比增高，使得混凝土界面过渡区更加密实，提高透水混凝土的抗冻性和强度。
Modified recycled aggregate and preparation method thereof, and pervious concrete and preparation method thereof
一种改性再生骨料及其制备方法和透水混凝土及其制备方法
ZOU DUJIAN (author) / WANG ZHONGZHEN (author) / LIU TIEJUN (author) / ZHOU AO (author) / SHEN MINGMING (author)
2020-06-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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