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Nano silicon dioxide/hybrid fiber reinforced geopolymer concrete and preparation method thereof
The invention belongs to the technical field of geopolymer concrete. The invention provides nano silicon dioxide/hybrid fiber reinforced geopolymer concrete and a preparation method thereof. The mass ratio of the fly ash to the slag in the cementing material of the geopolymer concrete is (410-415): (100-105), and the mass ratio of the graded broken stone to the river sand in the aggregate is (940-950): (620-640); the mass of the nano silicon dioxide is 1.2-1.8% of the mass of the cementing material; the volume mixing amounts of the polyvinyl alcohol fiber and the steel fiber in the geopolymer concrete are 0.5-0.7% and 1.4-2.0% respectively. Under various temperature conditions, the mechanical properties of the NHF-RGC are enhanced by doping the nano SiO2, the steel fibers and the PVA fibers, and the compressive strength of the NHF-RGC is in a trend of firstly increasing and then reducing along with the increase of the doping amounts of the nano SiO2, the steel fibers and the PVA fibers.
本发明属于地聚合物混凝土技术领域。本发明提供了一种纳米二氧化硅/混杂纤维增强地聚合物混凝土及其制备方法。地聚合物混凝土的胶凝材料中粉煤灰和矿渣的质量比为410～415：100～105，骨料中，级配碎石和河砂的质量比为940～950：620～640；纳米二氧化硅的质量为胶凝材料质量的1.2～1.8％；聚乙烯醇纤维和钢纤维在地聚合物混凝土中的体积掺量分别为0.5～0.7％、1.4～2.0％。在各个温度条件下，纳米SiO2、钢纤维和PVA纤维的掺入都对NHF‑RGC的力学性能起到了增强作用，NHF‑RGC的抗压强度随纳米SiO2、钢纤维和PVA纤维掺量的增加均呈先升高后降低的趋势。
Nano silicon dioxide/hybrid fiber reinforced geopolymer concrete and preparation method thereof
The invention belongs to the technical field of geopolymer concrete. The invention provides nano silicon dioxide/hybrid fiber reinforced geopolymer concrete and a preparation method thereof. The mass ratio of the fly ash to the slag in the cementing material of the geopolymer concrete is (410-415): (100-105), and the mass ratio of the graded broken stone to the river sand in the aggregate is (940-950): (620-640); the mass of the nano silicon dioxide is 1.2-1.8% of the mass of the cementing material; the volume mixing amounts of the polyvinyl alcohol fiber and the steel fiber in the geopolymer concrete are 0.5-0.7% and 1.4-2.0% respectively. Under various temperature conditions, the mechanical properties of the NHF-RGC are enhanced by doping the nano SiO2, the steel fibers and the PVA fibers, and the compressive strength of the NHF-RGC is in a trend of firstly increasing and then reducing along with the increase of the doping amounts of the nano SiO2, the steel fibers and the PVA fibers.
本发明属于地聚合物混凝土技术领域。本发明提供了一种纳米二氧化硅/混杂纤维增强地聚合物混凝土及其制备方法。地聚合物混凝土的胶凝材料中粉煤灰和矿渣的质量比为410～415：100～105，骨料中，级配碎石和河砂的质量比为940～950：620～640；纳米二氧化硅的质量为胶凝材料质量的1.2～1.8％；聚乙烯醇纤维和钢纤维在地聚合物混凝土中的体积掺量分别为0.5～0.7％、1.4～2.0％。在各个温度条件下，纳米SiO2、钢纤维和PVA纤维的掺入都对NHF‑RGC的力学性能起到了增强作用，NHF‑RGC的抗压强度随纳米SiO2、钢纤维和PVA纤维掺量的增加均呈先升高后降低的趋势。
Nano silicon dioxide/hybrid fiber reinforced geopolymer concrete and preparation method thereof
一种纳米二氧化硅/混杂纤维增强地聚合物混凝土及其制备方法
ZHANG PENG (author) / ZHAO YUANYUAN (author) / LIU JIANFENG (author) / ZHENG JIE (author) / YUAN WEISUO (author) / GUO JINJUN (author) / LOU SHENGJIA (author) / ZHANG RUI (author) / CHENG GUANGMING (author) / HAN QIAOYI (author)
2023-10-20
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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