Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Alkali-activated cementing material prepared from fly ash and superfine iron tailing sand and preparation method of alkali-activated cementing material
The invention provides an alkali-activated cementing material prepared from fly ash and superfine iron tailing sand and a preparation method of the alkali-activated cementing material. The alkali-activated cementing material is prepared from the following raw materials in parts by mass: 80-100 parts of superfine iron tailing sand, 0-15 parts of household garbage incineration fly ash, 10-30 parts of fly ash and 6-10 parts of an alkali activator, the alkaline excitant is an alkaline solution with the modulus of 1.6-2.0, which is prepared from sodium hydroxide with the concentration of more than 95% and water glass with the modulus of 2.3; wherein the ratio of the amount of substance of SiO2 to the amount of substance of Na2O is 1.6 to 2.0. The low-carbon solid-waste-based alkali-activated cementing material is synthesized mainly based on the preparation method of the alkali-activated cementing material according to the principle of solid waste collaborative recycling, the defect that superfine tailing sand is free of corner inertia is overcome, and compared with ordinary cement, the low-carbon solid-waste-based alkali-activated cementing material has higher high-temperature resistance, acid resistance and sulfate corrosion resistance, and the service life of the low-carbon solid-waste-based alkali-activated cementing material is prolonged. The maximum compressive strength of the solid waste-based alkali-activated cementing material prepared by reasonably blending the formula reaches 57.9 MPa.
本发明提供一种利用飞灰与超细铁尾矿砂制备的碱激发胶凝材料及其制备方法，由下述质量份原料组成：80～100份超细铁尾矿砂，0～15份生活垃圾焚烧飞灰，10～30份粉煤灰，6～10份碱性激发剂；碱性激发剂是由浓度为95%以上的氢氧化钠与模数为2.3的水玻璃互配成模数为1.6～2.0的碱性溶液；其中，SiO2和Na2O的物质的量比为1.6～2.0。本发明主要基于碱激发胶凝材料的制备方法，以固体废物协同资源化的原则来合成低碳型固废基碱激发胶凝材料，弥补超细尾矿砂无棱角惰性的缺点，相比于普通水泥具有更高的耐高温、耐酸和耐硫酸盐侵蚀的性能，通过合理调配配方所制备的固废基碱激发胶凝材料最大的抗压强度达到57.9MPa。
Alkali-activated cementing material prepared from fly ash and superfine iron tailing sand and preparation method of alkali-activated cementing material
The invention provides an alkali-activated cementing material prepared from fly ash and superfine iron tailing sand and a preparation method of the alkali-activated cementing material. The alkali-activated cementing material is prepared from the following raw materials in parts by mass: 80-100 parts of superfine iron tailing sand, 0-15 parts of household garbage incineration fly ash, 10-30 parts of fly ash and 6-10 parts of an alkali activator, the alkaline excitant is an alkaline solution with the modulus of 1.6-2.0, which is prepared from sodium hydroxide with the concentration of more than 95% and water glass with the modulus of 2.3; wherein the ratio of the amount of substance of SiO2 to the amount of substance of Na2O is 1.6 to 2.0. The low-carbon solid-waste-based alkali-activated cementing material is synthesized mainly based on the preparation method of the alkali-activated cementing material according to the principle of solid waste collaborative recycling, the defect that superfine tailing sand is free of corner inertia is overcome, and compared with ordinary cement, the low-carbon solid-waste-based alkali-activated cementing material has higher high-temperature resistance, acid resistance and sulfate corrosion resistance, and the service life of the low-carbon solid-waste-based alkali-activated cementing material is prolonged. The maximum compressive strength of the solid waste-based alkali-activated cementing material prepared by reasonably blending the formula reaches 57.9 MPa.
本发明提供一种利用飞灰与超细铁尾矿砂制备的碱激发胶凝材料及其制备方法，由下述质量份原料组成：80～100份超细铁尾矿砂，0～15份生活垃圾焚烧飞灰，10～30份粉煤灰，6～10份碱性激发剂；碱性激发剂是由浓度为95%以上的氢氧化钠与模数为2.3的水玻璃互配成模数为1.6～2.0的碱性溶液；其中，SiO2和Na2O的物质的量比为1.6～2.0。本发明主要基于碱激发胶凝材料的制备方法，以固体废物协同资源化的原则来合成低碳型固废基碱激发胶凝材料，弥补超细尾矿砂无棱角惰性的缺点，相比于普通水泥具有更高的耐高温、耐酸和耐硫酸盐侵蚀的性能，通过合理调配配方所制备的固废基碱激发胶凝材料最大的抗压强度达到57.9MPa。
Alkali-activated cementing material prepared from fly ash and superfine iron tailing sand and preparation method of alkali-activated cementing material
一种利用飞灰与超细铁尾矿砂制备的碱激发胶凝材料及其制备方法
08.12.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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