Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention relates to the field of preparation of building materials, in particular to a preparation method of modified corn straw fiber reinforced recycled concrete. According to the invention, corn straw fibers are used for reinforcing and modifying recycled concrete, and the hydrophilic modification of the corn straw fibers can effectively increase acting force between the corn straw fibersand the concrete, so the strength of the concrete is effectively improved; in addition, after the recycled coarse aggregate is modified with a closed modifier containing silica sol and calcium carbonate powder, pores and cracks in the surface of the recycled aggregate are filled, the effect of strengthening old mortar is achieved, the problems that the recycled aggregate is high in water absorption performance and low in bonding strength are solved, and the strength of the recycled concrete is further enhanced; the recycled concrete disclosed by the invention has very good mechanical properties through the synergistic enhancement effect of the modified recycled coarse aggregate and the modifying corn straw fibers; and the method is a promising method for recycling concrete construction waste.
本发明涉及建筑材料制备领域，具体关于一种改性玉米秸秆纤维增强再生混凝土的制备方法；本发明采用玉米秸秆纤维增强改性再生混凝土，玉米秸秆纤维的亲水改性有能够有效增加玉米秸秆纤维与混凝土之间的作用力，有效增加了混凝土的强度；而且本方法将再生的粗骨料用一种含有硅溶胶和碳酸钙粉的密闭改性剂进行改性后，填充了再生骨料表面的孔隙和裂纹，对旧砂浆具有加强的效果，解决了再生骨料吸水性大和粘结强度低的问题，进一步增强了再生混凝土的强度；本发明的再生混凝土通过改性再生粗骨料和改性玉米秸秆纤维的协同增强作用，具有了非常好的力学性能优异，是一种有前途的回收利用废旧混凝土建筑垃圾的方法。
The invention relates to the field of preparation of building materials, in particular to a preparation method of modified corn straw fiber reinforced recycled concrete. According to the invention, corn straw fibers are used for reinforcing and modifying recycled concrete, and the hydrophilic modification of the corn straw fibers can effectively increase acting force between the corn straw fibersand the concrete, so the strength of the concrete is effectively improved; in addition, after the recycled coarse aggregate is modified with a closed modifier containing silica sol and calcium carbonate powder, pores and cracks in the surface of the recycled aggregate are filled, the effect of strengthening old mortar is achieved, the problems that the recycled aggregate is high in water absorption performance and low in bonding strength are solved, and the strength of the recycled concrete is further enhanced; the recycled concrete disclosed by the invention has very good mechanical properties through the synergistic enhancement effect of the modified recycled coarse aggregate and the modifying corn straw fibers; and the method is a promising method for recycling concrete construction waste.
本发明涉及建筑材料制备领域，具体关于一种改性玉米秸秆纤维增强再生混凝土的制备方法；本发明采用玉米秸秆纤维增强改性再生混凝土，玉米秸秆纤维的亲水改性有能够有效增加玉米秸秆纤维与混凝土之间的作用力，有效增加了混凝土的强度；而且本方法将再生的粗骨料用一种含有硅溶胶和碳酸钙粉的密闭改性剂进行改性后，填充了再生骨料表面的孔隙和裂纹，对旧砂浆具有加强的效果，解决了再生骨料吸水性大和粘结强度低的问题，进一步增强了再生混凝土的强度；本发明的再生混凝土通过改性再生粗骨料和改性玉米秸秆纤维的协同增强作用，具有了非常好的力学性能优异，是一种有前途的回收利用废旧混凝土建筑垃圾的方法。
Preparation method of modified corn straw fiber reinforced recycled concrete
一种改性玉米秸秆纤维增强再生混凝土的制备方法
01.12.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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