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A platform for research: civil engineering, architecture and urbanism
Alkali-activated calcined construction waste regenerated micro-powder geopolymer mortar and preparation method thereof
The invention discloses alkali-activated calcined construction waste regenerated micro-powder geopolymer mortar and a preparation method thereof. The geopolymer mortar comprises 3-4wt% of calcined construction waste regenerated micro-powder, 26-28wt% of blast furnace slag, 48-52wt% of machine-made sand, 3-5wt% of sodium hydroxide and 16-18wt% of water. The preparation method comprises the following steps: respectively preparing calcined construction waste regenerated micro powder with the particle sizes of 38-75 microns, 15-38 microns and 5-15 microns according to different calcining processes; dissolving sodium hydroxide in water to prepare a sodium hydroxide alkali activator; adding part of the sodium hydroxide alkali activator into the machine-made sand and the blast furnace slag for primary alkali excitation; and adding the rest sodium hydroxide alkali activator into the calcined construction waste regenerated micro powder, the machine-made sand and the blast furnace slag for secondary alkali excitation. The problems of low utilization rate of solid waste materials, serious environmental pollution and the like are solved, and the prepared geopolymer mortar has the advantages of lower carbon footprint, lower energy consumption, high strength, low shrinkage rate, good creep resistance, high acid resistance and the like.
本发明公开了一种碱激发煅烧建筑垃圾再生微粉地聚合物砂浆及其制备方法，该地聚合物砂浆包括煅烧建筑垃圾再生微粉3‑4wt％、高炉矿渣26‑28wt％、机制砂48‑52wt％、氢氧化钠3‑5wt％、水16‑18wt％；该制备方法包括以下步骤：按照不同的煅烧工艺分别制备粒径为38‑75μm、15‑38μm和5‑15μm的煅烧建筑垃圾再生微粉；将氢氧化钠溶于水中制备氢氧化钠碱激发剂；将部分氢氧化钠碱激发剂加入机制砂和高炉矿渣中进行第一次碱激发；将剩余部分氢氧化钠碱激发剂加入煅烧建筑垃圾再生微粉、机制砂和高炉矿渣中进行第二次碱激发。本发明解决了固废材料利用率低以及环境污染严重等问题，所制备的地聚合物砂浆的碳足迹更低、能耗更少，还具有强度高、收缩率低、抗蠕变性好、耐酸性高等优异性能。
Alkali-activated calcined construction waste regenerated micro-powder geopolymer mortar and preparation method thereof
The invention discloses alkali-activated calcined construction waste regenerated micro-powder geopolymer mortar and a preparation method thereof. The geopolymer mortar comprises 3-4wt% of calcined construction waste regenerated micro-powder, 26-28wt% of blast furnace slag, 48-52wt% of machine-made sand, 3-5wt% of sodium hydroxide and 16-18wt% of water. The preparation method comprises the following steps: respectively preparing calcined construction waste regenerated micro powder with the particle sizes of 38-75 microns, 15-38 microns and 5-15 microns according to different calcining processes; dissolving sodium hydroxide in water to prepare a sodium hydroxide alkali activator; adding part of the sodium hydroxide alkali activator into the machine-made sand and the blast furnace slag for primary alkali excitation; and adding the rest sodium hydroxide alkali activator into the calcined construction waste regenerated micro powder, the machine-made sand and the blast furnace slag for secondary alkali excitation. The problems of low utilization rate of solid waste materials, serious environmental pollution and the like are solved, and the prepared geopolymer mortar has the advantages of lower carbon footprint, lower energy consumption, high strength, low shrinkage rate, good creep resistance, high acid resistance and the like.
本发明公开了一种碱激发煅烧建筑垃圾再生微粉地聚合物砂浆及其制备方法，该地聚合物砂浆包括煅烧建筑垃圾再生微粉3‑4wt％、高炉矿渣26‑28wt％、机制砂48‑52wt％、氢氧化钠3‑5wt％、水16‑18wt％；该制备方法包括以下步骤：按照不同的煅烧工艺分别制备粒径为38‑75μm、15‑38μm和5‑15μm的煅烧建筑垃圾再生微粉；将氢氧化钠溶于水中制备氢氧化钠碱激发剂；将部分氢氧化钠碱激发剂加入机制砂和高炉矿渣中进行第一次碱激发；将剩余部分氢氧化钠碱激发剂加入煅烧建筑垃圾再生微粉、机制砂和高炉矿渣中进行第二次碱激发。本发明解决了固废材料利用率低以及环境污染严重等问题，所制备的地聚合物砂浆的碳足迹更低、能耗更少，还具有强度高、收缩率低、抗蠕变性好、耐酸性高等优异性能。
Alkali-activated calcined construction waste regenerated micro-powder geopolymer mortar and preparation method thereof
碱激发煅烧建筑垃圾再生微粉地聚合物砂浆及其制备方法
WEN LONG (author) / JI JIE (author) / WANG DONG (author) / ZHAO YUHUA (author) / LIU CHENXU (author) / QIU CHUAN (author) / ZHENG WENHUA (author) / ZHANG RAN (author) / JIN SHANSHAN (author) / YANG WEI (author)
2024-06-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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