Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Recycled aggregate modified by nano silicon dioxide as well as preparation method and application thereof
The invention belongs to the technical field of novel building materials, and discloses a recycled aggregate modified by nano silicon dioxide as well as a preparation method and application of the recycled aggregate. The method comprises the following steps: adding nano silicon dioxide, and stirring to prepare a nano silicon dioxide solution; soaking recycled aggregate in a hydrochloric acid solution, removing residual mortar on the surface, draining, and naturally air-drying to obtain pretreated recycled aggregate; and putting the pretreated recycled aggregate into the nano silicon dioxide solution, standing, taking out, and naturally air-drying to obtain the nano silicon dioxide modified recycled aggregate. The modified recycled aggregate provided by the invention has better mechanical properties and durability. The nano silicon dioxide can be better dispersed in the recycled aggregate and is less in agglomeration, and the soaked nano silicon dioxide can fill micro pores in the recycled aggregate, so that the compression resistance and the durability of the recycled aggregate are improved, the void ratio is reduced, and the utilization rate of the recycled aggregate is effectively improved.
本发明属于新型建筑材料技术领域，公开一种利用纳米二氧化硅改性的再生骨料及其制备方法和应用。该方法是将纳米二氧化硅加入中搅拌，配置成纳米二氧化硅溶液；然后将再生骨料浸泡在盐酸溶液中，除去表面残余砂浆，滤干后，自然风干，得到预处理的再生骨料；再将预处理的再生骨料放入纳米二氧化硅溶液中静止，取出自然风干，制得纳米二氧化硅改性的再生骨料。本发明改性的再生骨料更具有更好的力学性能和耐久性能。纳米二氧化硅能更好地分散在再生骨料中，聚团少，经浸泡的纳米二氧化硅能填充再生骨料内部微观孔隙，提高再生骨料的抗压性能，耐久性能，降低空隙率，有效提升了再生骨料的利用率。
Recycled aggregate modified by nano silicon dioxide as well as preparation method and application thereof
The invention belongs to the technical field of novel building materials, and discloses a recycled aggregate modified by nano silicon dioxide as well as a preparation method and application of the recycled aggregate. The method comprises the following steps: adding nano silicon dioxide, and stirring to prepare a nano silicon dioxide solution; soaking recycled aggregate in a hydrochloric acid solution, removing residual mortar on the surface, draining, and naturally air-drying to obtain pretreated recycled aggregate; and putting the pretreated recycled aggregate into the nano silicon dioxide solution, standing, taking out, and naturally air-drying to obtain the nano silicon dioxide modified recycled aggregate. The modified recycled aggregate provided by the invention has better mechanical properties and durability. The nano silicon dioxide can be better dispersed in the recycled aggregate and is less in agglomeration, and the soaked nano silicon dioxide can fill micro pores in the recycled aggregate, so that the compression resistance and the durability of the recycled aggregate are improved, the void ratio is reduced, and the utilization rate of the recycled aggregate is effectively improved.
本发明属于新型建筑材料技术领域，公开一种利用纳米二氧化硅改性的再生骨料及其制备方法和应用。该方法是将纳米二氧化硅加入中搅拌，配置成纳米二氧化硅溶液；然后将再生骨料浸泡在盐酸溶液中，除去表面残余砂浆，滤干后，自然风干，得到预处理的再生骨料；再将预处理的再生骨料放入纳米二氧化硅溶液中静止，取出自然风干，制得纳米二氧化硅改性的再生骨料。本发明改性的再生骨料更具有更好的力学性能和耐久性能。纳米二氧化硅能更好地分散在再生骨料中，聚团少，经浸泡的纳米二氧化硅能填充再生骨料内部微观孔隙，提高再生骨料的抗压性能，耐久性能，降低空隙率，有效提升了再生骨料的利用率。
Recycled aggregate modified by nano silicon dioxide as well as preparation method and application thereof
一种利用纳米二氧化硅改性的再生骨料及其制备方法和应用
LI PEILONG (Autor:in)
06.11.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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