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A platform for research: civil engineering, architecture and urbanism
Nanometer strengthening method of recycled aggregate concrete and obtained strengthened recycled aggregate
The invention belongs to the technical field of building materials, and particularly relates to a nanometer strengthening method of recycled aggregate concrete and obtained strengthened recycled aggregate. The method comprises the following steps: 1) soaking a recycled coarse aggregate raw material in a nano calcium carbonate solution until the recycled coarse aggregate raw material absorbs waterto be saturated, and then taking out the recycled coarse aggregate to obtain recycled coarse aggregate of which the surface is in a wet state; 2) uniformly mixing and stirring the recycled coarse aggregate of which the surface is in a wet state with part of the cementing material; and (3) then adding sand and the remaining cementing material, uniformly stirring, and finally adding a mixed solutionof water and a high-efficiency water reducing agent for mixing, so as to obtain the recycled aggregate concrete. Micro-cracks and open pores of the recycled aggregate are filled by utilizing the characteristics of fine particles and high permeability of the nano material, so that the strength of the recycled aggregate is improved, and the interface strength between the recycled aggregate and cement mortar is improved and enhanced through a secondary stirring process and a fly ash material.
本发明属于建筑材料技术领域，具体涉及一种再生骨料混凝土的纳米强化方法及得到的强化再生骨料。该方法包括以下步骤：1)将再生粗骨料原料在纳米碳酸钙溶液中浸泡至吸水饱和，之后将再生粗骨料取出，得到表面呈湿润状态的再生粗骨料；2)将表面呈湿润状态的再生粗骨料与部分胶凝材料混合搅拌均匀；3)然后加入砂、剩余胶凝材料，再搅拌均匀，最后加水和高效减水剂的混合溶液拌合，即得到所述的再生骨料混凝土。本发明利用纳米材料颗粒细、渗透性强的特点填充再生骨料的微裂缝和开口孔隙，提高再生骨料本身的强度，通过二次搅拌工艺和粉煤灰材料改善和加强再生骨料与水泥砂浆之间的界面强度。
Nanometer strengthening method of recycled aggregate concrete and obtained strengthened recycled aggregate
The invention belongs to the technical field of building materials, and particularly relates to a nanometer strengthening method of recycled aggregate concrete and obtained strengthened recycled aggregate. The method comprises the following steps: 1) soaking a recycled coarse aggregate raw material in a nano calcium carbonate solution until the recycled coarse aggregate raw material absorbs waterto be saturated, and then taking out the recycled coarse aggregate to obtain recycled coarse aggregate of which the surface is in a wet state; 2) uniformly mixing and stirring the recycled coarse aggregate of which the surface is in a wet state with part of the cementing material; and (3) then adding sand and the remaining cementing material, uniformly stirring, and finally adding a mixed solutionof water and a high-efficiency water reducing agent for mixing, so as to obtain the recycled aggregate concrete. Micro-cracks and open pores of the recycled aggregate are filled by utilizing the characteristics of fine particles and high permeability of the nano material, so that the strength of the recycled aggregate is improved, and the interface strength between the recycled aggregate and cement mortar is improved and enhanced through a secondary stirring process and a fly ash material.
本发明属于建筑材料技术领域，具体涉及一种再生骨料混凝土的纳米强化方法及得到的强化再生骨料。该方法包括以下步骤：1)将再生粗骨料原料在纳米碳酸钙溶液中浸泡至吸水饱和，之后将再生粗骨料取出，得到表面呈湿润状态的再生粗骨料；2)将表面呈湿润状态的再生粗骨料与部分胶凝材料混合搅拌均匀；3)然后加入砂、剩余胶凝材料，再搅拌均匀，最后加水和高效减水剂的混合溶液拌合，即得到所述的再生骨料混凝土。本发明利用纳米材料颗粒细、渗透性强的特点填充再生骨料的微裂缝和开口孔隙，提高再生骨料本身的强度，通过二次搅拌工艺和粉煤灰材料改善和加强再生骨料与水泥砂浆之间的界面强度。
Nanometer strengthening method of recycled aggregate concrete and obtained strengthened recycled aggregate
一种再生骨料混凝土的纳米强化方法及得到的强化再生骨料
CHEN XUYONG (author) / WU QIAOYUN (author) / TIAN YE (author) / FAN JIANPING (author)
2020-11-03
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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