Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Modification method of basalt fiber in basalt fiber sprayed concrete for tunnel
The invention discloses a modification method of basalt fibers in basalt fiber sprayed concrete for tunnels, which comprises the following steps: soaking the basalt fibers for 2 hours by using an acetone solution, completely washing the basalt fibers by using tap water, soaking the basalt fibers for 1 hour by using a silane coupling agent-absolute ethyl alcohol solution after the basalt fibers are dried, and taking out the basalt fibers; the preparation method comprises the following steps: 1, soaking basalt fibers in a silane coupling agent-absolute ethyl alcohol solution, heating the basalt fibers in a drying oven at 120 DEG C for 1 h to completely react the basalt fibers with the silane coupling agent, cooling the basalt fibers, and 2, carrying out thermal improvement treatment on the basalt fibers before soaking in the silane coupling agent-absolute ethyl alcohol solution, and treating the basalt fibers in a surface modification solution. Active groups of the KH560 type silane coupling agent can form hydrogen bonds or covalent bonds with the surface of basalt, and each unit group is subjected to dehydration condensation through a Si-O main chain and is paved on the surface of fiber to form a continuous new surface layer, so that defects on the surface of the fiber are repaired, filled and wrapped, and weak links of the KH560 type silane coupling agent are reduced.
本发明公开了隧道用玄武岩纤维喷射混凝土中玄武岩纤维的改性方法，包括以下步骤：首先使用丙酮溶液浸泡玄武岩纤维2小时，使用自来水完全冲洗干净，待其干燥后使用硅烷偶联剂‑无水乙醇溶液浸泡1小时后取出，然后置于120℃的烘箱中加热1h，使玄武岩纤维和硅烷偶联剂完全反应，冷却后即可使用，步骤二在硅烷偶联剂‑无水乙醇溶液浸泡前还采用玄武岩纤维进行热改进处理，然后置于表面改性液中处理。本发明KH560型硅烷偶联剂的活性基团可以与玄武岩表面形成氢键或共价键，且各单位基团以Si‑O主链脱水缩合，在纤维表面摊铺并形成连续的新面层，修补、填充、包裹纤维表面的缺陷，减少自身的薄弱环节。
Modification method of basalt fiber in basalt fiber sprayed concrete for tunnel
The invention discloses a modification method of basalt fibers in basalt fiber sprayed concrete for tunnels, which comprises the following steps: soaking the basalt fibers for 2 hours by using an acetone solution, completely washing the basalt fibers by using tap water, soaking the basalt fibers for 1 hour by using a silane coupling agent-absolute ethyl alcohol solution after the basalt fibers are dried, and taking out the basalt fibers; the preparation method comprises the following steps: 1, soaking basalt fibers in a silane coupling agent-absolute ethyl alcohol solution, heating the basalt fibers in a drying oven at 120 DEG C for 1 h to completely react the basalt fibers with the silane coupling agent, cooling the basalt fibers, and 2, carrying out thermal improvement treatment on the basalt fibers before soaking in the silane coupling agent-absolute ethyl alcohol solution, and treating the basalt fibers in a surface modification solution. Active groups of the KH560 type silane coupling agent can form hydrogen bonds or covalent bonds with the surface of basalt, and each unit group is subjected to dehydration condensation through a Si-O main chain and is paved on the surface of fiber to form a continuous new surface layer, so that defects on the surface of the fiber are repaired, filled and wrapped, and weak links of the KH560 type silane coupling agent are reduced.
本发明公开了隧道用玄武岩纤维喷射混凝土中玄武岩纤维的改性方法，包括以下步骤：首先使用丙酮溶液浸泡玄武岩纤维2小时，使用自来水完全冲洗干净，待其干燥后使用硅烷偶联剂‑无水乙醇溶液浸泡1小时后取出，然后置于120℃的烘箱中加热1h，使玄武岩纤维和硅烷偶联剂完全反应，冷却后即可使用，步骤二在硅烷偶联剂‑无水乙醇溶液浸泡前还采用玄武岩纤维进行热改进处理，然后置于表面改性液中处理。本发明KH560型硅烷偶联剂的活性基团可以与玄武岩表面形成氢键或共价键，且各单位基团以Si‑O主链脱水缩合，在纤维表面摊铺并形成连续的新面层，修补、填充、包裹纤维表面的缺陷，减少自身的薄弱环节。
Modification method of basalt fiber in basalt fiber sprayed concrete for tunnel
隧道用玄武岩纤维喷射混凝土中玄武岩纤维的改性方法
LIU LILI (Autor:in) / GUO LINJIAN (Autor:in) / ZHANG ZIYE (Autor:in) / ZHENG BIAO (Autor:in)
01.03.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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