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A platform for research: civil engineering, architecture and urbanism
Alkali-activated composite recycled powder recycled aggregate pervious concrete and preparation method thereof
The invention provides alkali-activated composite recycled powder and recycled aggregate pervious concrete. The pervious concrete is prepared from, by weight, 6-16 parts of fly ash, 5-15 parts of mineral powder, 2-6 parts of brick powder, 2-8 parts of water, 30-50 parts of single-particle-size coarse aggregate, 10-30 parts of recycled coarse aggregate and 4-6 parts of alkali activator. Adding the single-particle-size coarse aggregate, the recycled coarse aggregate and water accounting for 20-30% of the total water into a stirrer, stirring for 30 seconds, then sequentially adding the mineral powder, the fly ash, the silica fume, the brick powder and the residual water, and continuously stirring for 1 minute and 30 seconds; and finally, adding water glass and a polycarboxylic acid water reducer, and continuously stirring for 2 minutes to form the porous concrete. And carrying out mold filling, vibrating and forming, curing with a mold, demolding, and curing to 28 days to obtain a pervious concrete finished product. The product not only has the characteristics of rough surface, strong water permeability, good ductility and the like, but also effectively utilizes the solid waste brick powder, the recycled aggregate, the solid waste mineral admixture and the like, so that the wastes are recycled.
本发明提供了一种碱激发复合再生粉体再生骨料透水混凝土，包括重量份的粉煤灰6～16份、矿粉5～15份、砖粉2～6份、水2～8份、单一粒径粗骨料30～50份、再生粗骨料10～30份、碱性激发剂4～6份。将单一粒径粗骨料、再生粗骨料和总水量20％～30％的水加入到搅拌机中，搅拌30秒，然后依次加入矿粉、粉煤灰、硅灰、砖粉及剩余的水，继续搅拌1分30秒；最后加入水玻璃及聚羧酸减水剂，再继续搅拌2分钟，多孔混凝土形成；再经装模振捣成型、带模具养护、脱模、养护至28d龄期得透水混凝土成品。该产品不仅具有表面粗糙、透水性强、延展性好等特点，且有效利用固体废弃物砖粉、再生骨料以及固废矿物掺合料等，使废弃物形成资源再利用。
Alkali-activated composite recycled powder recycled aggregate pervious concrete and preparation method thereof
The invention provides alkali-activated composite recycled powder and recycled aggregate pervious concrete. The pervious concrete is prepared from, by weight, 6-16 parts of fly ash, 5-15 parts of mineral powder, 2-6 parts of brick powder, 2-8 parts of water, 30-50 parts of single-particle-size coarse aggregate, 10-30 parts of recycled coarse aggregate and 4-6 parts of alkali activator. Adding the single-particle-size coarse aggregate, the recycled coarse aggregate and water accounting for 20-30% of the total water into a stirrer, stirring for 30 seconds, then sequentially adding the mineral powder, the fly ash, the silica fume, the brick powder and the residual water, and continuously stirring for 1 minute and 30 seconds; and finally, adding water glass and a polycarboxylic acid water reducer, and continuously stirring for 2 minutes to form the porous concrete. And carrying out mold filling, vibrating and forming, curing with a mold, demolding, and curing to 28 days to obtain a pervious concrete finished product. The product not only has the characteristics of rough surface, strong water permeability, good ductility and the like, but also effectively utilizes the solid waste brick powder, the recycled aggregate, the solid waste mineral admixture and the like, so that the wastes are recycled.
本发明提供了一种碱激发复合再生粉体再生骨料透水混凝土，包括重量份的粉煤灰6～16份、矿粉5～15份、砖粉2～6份、水2～8份、单一粒径粗骨料30～50份、再生粗骨料10～30份、碱性激发剂4～6份。将单一粒径粗骨料、再生粗骨料和总水量20％～30％的水加入到搅拌机中，搅拌30秒，然后依次加入矿粉、粉煤灰、硅灰、砖粉及剩余的水，继续搅拌1分30秒；最后加入水玻璃及聚羧酸减水剂，再继续搅拌2分钟，多孔混凝土形成；再经装模振捣成型、带模具养护、脱模、养护至28d龄期得透水混凝土成品。该产品不仅具有表面粗糙、透水性强、延展性好等特点，且有效利用固体废弃物砖粉、再生骨料以及固废矿物掺合料等，使废弃物形成资源再利用。
Alkali-activated composite recycled powder recycled aggregate pervious concrete and preparation method thereof
一种碱激发复合再生粉体再生骨料透水混凝土及其制备方法
LI LI (author) / LI XINZHAN (author) / LI ZONGLI (author)
2022-05-06
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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