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A platform for research: civil engineering, architecture and urbanism
Domestic waste incineration fly ash composite binder for cement-soil mixing pile and preparation method of cement-soil mixing pile
The invention discloses a household garbage incineration fly ash composite binder for a cement-soil mixing pile. The composite binder comprises the following raw materials in parts by mass: household garbage incineration fly ash, cement, organic alkali accounting for 8-20% of the mass of the household garbage incineration fly ash, and an additive accounting for 0.05-0.5% of the mass of the cement, the adopted composite binding material has double curing effects on soft soil, one is cement curing, and the other is alkali-activated household garbage incineration fly ash curing. Active oxides (silicon oxide and aluminum oxide) in the fly ash can react with hydroxyl ions in the organic alkali to generate a silicon-aluminum network structure hydration product, so that the strength of the cement-soil mixing pile is improved, heavy metal in the fly ash is effectively wrapped, and leaching of the heavy metal is reduced. The adopted organic base is safe and non-toxic, and the construction safety and environmental protection property can be improved. The household garbage incineration fly ash is used for the cement soil mixing pile, the technical problem that the cost of the cement soil mixing pile is high is solved, the problem that heavy metal leaching of the fly ash is difficult to control is solved, the strength of cement soil is improved, cost reduction and environment protection are facilitated, and efficient resource utilization of the household garbage incineration fly ash is achieved.
本发明公开了一种用于水泥土搅拌桩的生活垃圾焚烧飞灰复合结合料，复合结合料原料按质量份包括生活垃圾焚烧飞灰、水泥、占生活垃圾焚烧飞灰质量8‑20％的有机碱、占水泥质量0.05‑0.5％的外加剂；所采用的复合结合料对软土具有双固化作用，一是通过水泥固化，二是通过碱激发生活垃圾焚烧飞灰固化，飞灰中的活性氧化物(氧化硅和氧化铝)会和有机碱中的氢氧根离子发生反应生成硅铝网络结构水化产物从而提高水泥土搅拌桩的强度，而且飞灰中的重金属被有效包裹，从而减少重金属的浸出。本发明采用的有机碱安全，无毒性，可提高施工的安全性和环保性。本发明将生活垃圾焚烧飞灰用于水泥土搅拌桩，既解决了水泥土搅拌桩成本高的技术问题，又解决了飞灰重金属浸出难以控制等问题，不但提高了水泥土强度，还有利于降低成本、保护环境、实现生活垃圾焚烧飞灰的资源化高效利用。
Domestic waste incineration fly ash composite binder for cement-soil mixing pile and preparation method of cement-soil mixing pile
The invention discloses a household garbage incineration fly ash composite binder for a cement-soil mixing pile. The composite binder comprises the following raw materials in parts by mass: household garbage incineration fly ash, cement, organic alkali accounting for 8-20% of the mass of the household garbage incineration fly ash, and an additive accounting for 0.05-0.5% of the mass of the cement, the adopted composite binding material has double curing effects on soft soil, one is cement curing, and the other is alkali-activated household garbage incineration fly ash curing. Active oxides (silicon oxide and aluminum oxide) in the fly ash can react with hydroxyl ions in the organic alkali to generate a silicon-aluminum network structure hydration product, so that the strength of the cement-soil mixing pile is improved, heavy metal in the fly ash is effectively wrapped, and leaching of the heavy metal is reduced. The adopted organic base is safe and non-toxic, and the construction safety and environmental protection property can be improved. The household garbage incineration fly ash is used for the cement soil mixing pile, the technical problem that the cost of the cement soil mixing pile is high is solved, the problem that heavy metal leaching of the fly ash is difficult to control is solved, the strength of cement soil is improved, cost reduction and environment protection are facilitated, and efficient resource utilization of the household garbage incineration fly ash is achieved.
本发明公开了一种用于水泥土搅拌桩的生活垃圾焚烧飞灰复合结合料，复合结合料原料按质量份包括生活垃圾焚烧飞灰、水泥、占生活垃圾焚烧飞灰质量8‑20％的有机碱、占水泥质量0.05‑0.5％的外加剂；所采用的复合结合料对软土具有双固化作用，一是通过水泥固化，二是通过碱激发生活垃圾焚烧飞灰固化，飞灰中的活性氧化物(氧化硅和氧化铝)会和有机碱中的氢氧根离子发生反应生成硅铝网络结构水化产物从而提高水泥土搅拌桩的强度，而且飞灰中的重金属被有效包裹，从而减少重金属的浸出。本发明采用的有机碱安全，无毒性，可提高施工的安全性和环保性。本发明将生活垃圾焚烧飞灰用于水泥土搅拌桩，既解决了水泥土搅拌桩成本高的技术问题，又解决了飞灰重金属浸出难以控制等问题，不但提高了水泥土强度，还有利于降低成本、保护环境、实现生活垃圾焚烧飞灰的资源化高效利用。
Domestic waste incineration fly ash composite binder for cement-soil mixing pile and preparation method of cement-soil mixing pile
一种用于水泥土搅拌桩的生活垃圾焚烧飞灰复合结合料及其水泥土搅拌桩制备方法
XIONG CHUHUA (author) / TAN YU (author) / HU HANG (author) / CHEN TIANQI (author) / ZHOU YICHI (author)
2024-06-07
Patent
Electronic Resource
Chinese
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