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High-temperature-resistant concrete based on iron tailings and steel slag powder
The invention discloses high-temperature-resistant concrete based on iron tailings and steel slag powder. The high-temperature-resistant concrete comprises the following components in parts by mass: 1040-1060 parts of diorite porphyrite coarse aggregate; 650-700 parts of Zhilong porphyrite machine-made sand; 100-150 parts of high-temperature-resistant ceramsite sand; 230-260 parts of cement; 185-195 parts of a mineral admixture; 10-30 parts of a conditioning agent; 4.5-5 parts of an additive; 5-6 parts of high-temperature-resistant inorganic fibers; and 160-165 parts of water. According to the high-temperature-resistant concrete, the iron tailing diorite porphyrite is used as the aggregate, the melting temperature of the iron tailing diorite porphyrite is high, so that the aggregate has good volume stability at a high temperature, and meanwhile, the high-temperature-resistant ceramsite sand is doped into the aggregate, so that the high temperature resistance of the aggregate and the strength of the material can be further improved; besides, the high-temperature-resistant concrete uses the steel slag powder as a cementing material, so that the content of a hydration product Ca(OH)2 of the cementing material can be reduced, and the decomposition rate of the hydration product of a cementing system in a high-temperature environment is reduced; and finally, inorganic high-temperature-resistant fibers are used in the high-temperature-resistant concrete, and the inorganic high-temperature-resistant fibers are good in cohesiveness with cement paste.
本发明公开了一种基于铁尾矿和钢渣粉的耐高温混凝土，包括如下质量份数的组分：闪长玢岩粗骨料1040～1060份；闪长玢岩机制砂650～700份；耐高温陶粒砂100～150份；水泥230～260份；矿物掺合料185～195份；调节剂10～30份；外加剂4.5～5份；耐高温无机纤维5～6份；水160～165份。本发明耐高温混凝土使用铁尾矿闪长玢岩作为骨料，铁尾矿闪长玢岩熔融温度高，因此使骨料在高温下具有良好的体积稳定性，同时通过往骨料中掺杂耐高温陶粒砂，能进一步提升骨料的耐高温性以及材料的强度；另外，本发明耐高温混凝土使用钢渣粉作为胶凝材料，能够降低胶凝材料水化产物Ca(OH)2的含量，从而减少胶凝体系在高温环境下水化产物的分解率；最后，本发明耐高温混凝土使用无机耐高温纤维，无机耐高温纤维与水泥浆体粘结性好。
High-temperature-resistant concrete based on iron tailings and steel slag powder
The invention discloses high-temperature-resistant concrete based on iron tailings and steel slag powder. The high-temperature-resistant concrete comprises the following components in parts by mass: 1040-1060 parts of diorite porphyrite coarse aggregate; 650-700 parts of Zhilong porphyrite machine-made sand; 100-150 parts of high-temperature-resistant ceramsite sand; 230-260 parts of cement; 185-195 parts of a mineral admixture; 10-30 parts of a conditioning agent; 4.5-5 parts of an additive; 5-6 parts of high-temperature-resistant inorganic fibers; and 160-165 parts of water. According to the high-temperature-resistant concrete, the iron tailing diorite porphyrite is used as the aggregate, the melting temperature of the iron tailing diorite porphyrite is high, so that the aggregate has good volume stability at a high temperature, and meanwhile, the high-temperature-resistant ceramsite sand is doped into the aggregate, so that the high temperature resistance of the aggregate and the strength of the material can be further improved; besides, the high-temperature-resistant concrete uses the steel slag powder as a cementing material, so that the content of a hydration product Ca(OH)2 of the cementing material can be reduced, and the decomposition rate of the hydration product of a cementing system in a high-temperature environment is reduced; and finally, inorganic high-temperature-resistant fibers are used in the high-temperature-resistant concrete, and the inorganic high-temperature-resistant fibers are good in cohesiveness with cement paste.
本发明公开了一种基于铁尾矿和钢渣粉的耐高温混凝土，包括如下质量份数的组分：闪长玢岩粗骨料1040～1060份；闪长玢岩机制砂650～700份；耐高温陶粒砂100～150份；水泥230～260份；矿物掺合料185～195份；调节剂10～30份；外加剂4.5～5份；耐高温无机纤维5～6份；水160～165份。本发明耐高温混凝土使用铁尾矿闪长玢岩作为骨料，铁尾矿闪长玢岩熔融温度高，因此使骨料在高温下具有良好的体积稳定性，同时通过往骨料中掺杂耐高温陶粒砂，能进一步提升骨料的耐高温性以及材料的强度；另外，本发明耐高温混凝土使用钢渣粉作为胶凝材料，能够降低胶凝材料水化产物Ca(OH)2的含量，从而减少胶凝体系在高温环境下水化产物的分解率；最后，本发明耐高温混凝土使用无机耐高温纤维，无机耐高温纤维与水泥浆体粘结性好。
High-temperature-resistant concrete based on iron tailings and steel slag powder
一种基于铁尾矿和钢渣粉的耐高温混凝土
WANG ZILONG (author) / WANG SHENGWEI (author) / PAN JINGAN (author) / BAI LIGUO (author) / ZHAO YOUJUN (author) / REN CHENYANG (author)
2021-05-28
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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