Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Low-shrinkage high-strength red mud-slag geopolymer and preparation method thereof
The invention belongs to the technical field of solid waste resource utilization and novel civil engineering material preparation, and provides a low-shrinkage high-strength red mud-slag geopolymer and a preparation method thereof in order to meet the urgent demand of comprehensively utilizing a large amount of industrial waste red mud produced by Shanxi alumina factories. The red mud-slag geopolymer is prepared by mixing Bayer process red mud, slag, a sodium hydroxide solution, a sodium silicate solution, additional water and river sand according to a certain proportion and maintaining the mixture in a specific environment, the free shrinkage and dry shrinkage strain of the red mud-slag geopolymer is maximally controlled within 2000 [mu][epsilon], and the 14-day flexural strength and compressive strength exceed 5 MPa and 35 MPa. The problem of large-scale utilization of red mud which is industrial waste is solved, the mixture of red mud and slag mutually stimulates the activity of red mud, the compressive strength is high, and the shrinkage strain is greatly reduced compared with that of a common geopolymer. The preparation process is relatively simple, industrial production is easy to realize, industrial wastes are utilized to a greater extent, and environmental protection is facilitated.
本发明属固体废弃物资源化利用和新型土木工程材料制备技术领域，为解决大量综合利用山西氧化铝厂生产的赤泥这种工业废物的迫切需求，提供一种低收缩高强度赤泥‑矿渣地聚物及其制备方法，由拜耳法赤泥、矿渣、氢氧化钠溶液、硅酸钠溶液、附加水、河砂按一定比例混合制备，在特定环境下养护而成，赤泥‑矿渣地聚物得到的自由收缩和干燥收缩应变最大控制在2000με内，14 d的抗折和抗压强度超过5 MPa和35 MPa。解决了赤泥这种工业废弃物大规模利用的问题，且赤泥与矿渣的混合物相互激发起其活性，抗压强度较高，收缩应变较一般地聚物有较大降低。制备工艺相对简单，容易实现工业化生产，较大程度的利用工业废弃物，利于环保。
Low-shrinkage high-strength red mud-slag geopolymer and preparation method thereof
The invention belongs to the technical field of solid waste resource utilization and novel civil engineering material preparation, and provides a low-shrinkage high-strength red mud-slag geopolymer and a preparation method thereof in order to meet the urgent demand of comprehensively utilizing a large amount of industrial waste red mud produced by Shanxi alumina factories. The red mud-slag geopolymer is prepared by mixing Bayer process red mud, slag, a sodium hydroxide solution, a sodium silicate solution, additional water and river sand according to a certain proportion and maintaining the mixture in a specific environment, the free shrinkage and dry shrinkage strain of the red mud-slag geopolymer is maximally controlled within 2000 [mu][epsilon], and the 14-day flexural strength and compressive strength exceed 5 MPa and 35 MPa. The problem of large-scale utilization of red mud which is industrial waste is solved, the mixture of red mud and slag mutually stimulates the activity of red mud, the compressive strength is high, and the shrinkage strain is greatly reduced compared with that of a common geopolymer. The preparation process is relatively simple, industrial production is easy to realize, industrial wastes are utilized to a greater extent, and environmental protection is facilitated.
本发明属固体废弃物资源化利用和新型土木工程材料制备技术领域，为解决大量综合利用山西氧化铝厂生产的赤泥这种工业废物的迫切需求，提供一种低收缩高强度赤泥‑矿渣地聚物及其制备方法，由拜耳法赤泥、矿渣、氢氧化钠溶液、硅酸钠溶液、附加水、河砂按一定比例混合制备，在特定环境下养护而成，赤泥‑矿渣地聚物得到的自由收缩和干燥收缩应变最大控制在2000με内，14 d的抗折和抗压强度超过5 MPa和35 MPa。解决了赤泥这种工业废弃物大规模利用的问题，且赤泥与矿渣的混合物相互激发起其活性，抗压强度较高，收缩应变较一般地聚物有较大降低。制备工艺相对简单，容易实现工业化生产，较大程度的利用工业废弃物，利于环保。
Low-shrinkage high-strength red mud-slag geopolymer and preparation method thereof
一种低收缩高强度赤泥-矿渣地聚物及其制备方法
WANG YONGBAO (Autor:in) / GAO YANG (Autor:in) / ZHANG XIAO (Autor:in) / LIU FANG (Autor:in) / ZHANG JUN (Autor:in) / WANG BAOSHENG (Autor:in) / SHI HAITANG (Autor:in) / WANG WEIKUN (Autor:in) / WU JIANJUN (Autor:in) / YANG JIANGUO (Autor:in)
23.04.2021
Patent
Elektronische Ressource
Chinesisch
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