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Recycled aggregate based on metakaolin slurry soaking and modification method thereof
The invention belongs to the technical field of building materials, and particularly relates to a recycled aggregate modification method based on metakaolin slurry soaking, which mainly comprises the following steps: preparing raw materials: respectively weighing 60-90 parts by weight of metakaolin, 30-65 parts by weight of fly ash, 30-65 parts by weight of silica fume, 0.5-1.5 parts by weight of a water reducing agent, 2-3.5 parts by weight of an alkali activator, 2-3 parts by weight of a water glass solution and 35-60 parts by weight of water; uniformly mixing and stirring the metakaolin, the fly ash and the silica fume according to the proportion to obtain a dry mixture; mixing the water, the water reducing agent, the alkaline exciting agent and the water glass solution in proportion, and uniformly stirring to obtain a mixed solution; mixing the dry mixture with the mixed solution in proportion, and uniformly stirring to obtain metakaolin slurry; pretreating recycled coarse aggregate, soaking the recycled coarse aggregate in the metakaolin slurry, filtering out the recycled coarse aggregate after the recycled coarse aggregate absorbs water to be saturated, and drying to obtain the modified recycled aggregate. According to the method, existing waste can be utilized to the maximum extent, and resource utilization of industrial waste can be achieved.
本发明属于建筑材料技术领域，更具体地说，本发明涉及一种基于偏高岭土浆体浸泡的再生骨料改性方法，其主要包括以下步骤：制备原材料，按重量计，分别称取偏高岭土60～90份、粉煤灰30～65份、硅灰30～65份、减水剂0.5～1.5份、碱性激发剂2～3.5份、水玻璃溶液2～3份、水35～60份；将偏高岭土、粉煤灰和硅灰按述比例混合搅拌均匀，得到干混料；将水、减水剂、碱性激发剂和水玻璃溶液按比例进行混合并搅拌均匀后，得到混合液；将干混料与混合液按比例进行混合并搅拌均匀后，得到偏高岭土浆体；将再生粗骨料进行预处理后，浸泡于偏高岭土浆体中，至吸水饱和后滤出，干燥，即可得到改性后的再生骨料。本发明所述方法能够最大程度的利用现有的废弃物，可实现工业废弃物资源化利用。
Recycled aggregate based on metakaolin slurry soaking and modification method thereof
The invention belongs to the technical field of building materials, and particularly relates to a recycled aggregate modification method based on metakaolin slurry soaking, which mainly comprises the following steps: preparing raw materials: respectively weighing 60-90 parts by weight of metakaolin, 30-65 parts by weight of fly ash, 30-65 parts by weight of silica fume, 0.5-1.5 parts by weight of a water reducing agent, 2-3.5 parts by weight of an alkali activator, 2-3 parts by weight of a water glass solution and 35-60 parts by weight of water; uniformly mixing and stirring the metakaolin, the fly ash and the silica fume according to the proportion to obtain a dry mixture; mixing the water, the water reducing agent, the alkaline exciting agent and the water glass solution in proportion, and uniformly stirring to obtain a mixed solution; mixing the dry mixture with the mixed solution in proportion, and uniformly stirring to obtain metakaolin slurry; pretreating recycled coarse aggregate, soaking the recycled coarse aggregate in the metakaolin slurry, filtering out the recycled coarse aggregate after the recycled coarse aggregate absorbs water to be saturated, and drying to obtain the modified recycled aggregate. According to the method, existing waste can be utilized to the maximum extent, and resource utilization of industrial waste can be achieved.
本发明属于建筑材料技术领域，更具体地说，本发明涉及一种基于偏高岭土浆体浸泡的再生骨料改性方法，其主要包括以下步骤：制备原材料，按重量计，分别称取偏高岭土60～90份、粉煤灰30～65份、硅灰30～65份、减水剂0.5～1.5份、碱性激发剂2～3.5份、水玻璃溶液2～3份、水35～60份；将偏高岭土、粉煤灰和硅灰按述比例混合搅拌均匀，得到干混料；将水、减水剂、碱性激发剂和水玻璃溶液按比例进行混合并搅拌均匀后，得到混合液；将干混料与混合液按比例进行混合并搅拌均匀后，得到偏高岭土浆体；将再生粗骨料进行预处理后，浸泡于偏高岭土浆体中，至吸水饱和后滤出，干燥，即可得到改性后的再生骨料。本发明所述方法能够最大程度的利用现有的废弃物，可实现工业废弃物资源化利用。
Recycled aggregate based on metakaolin slurry soaking and modification method thereof
一种基于偏高岭土浆体浸泡的再生骨料及其改性方法
QIN LINGLING (author) / LIU JUNHAN (author) / LUO REN (author) / LIU HUAI (author) / LI WANLIN (author)
2021-07-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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