以玄武岩混合材的水泥与混凝土外加剂适应性研究

发布时间：2018-03-05 10:13

本文选题：玄武岩　切入点：混合材　出处：《西南科技大学》2017年硕士论文　论文类型：学位论文

【摘要】：本文以峨眉山玄武岩作混合材,通过控制玄武岩掺量和粉磨方式可以获得颗粒级配相对合理的水泥。进行了不同玄武岩掺量的单掺,与粒化高炉矿渣或粉煤粉不同掺量的复掺试验,找出其对P·O42.5R水泥基本化学和物理性能的影响;然后在此基础上开展不同掺入量、不同标准稠度用水量及不同细度条件下,玄武岩单掺或复掺的P·O42.5R水泥与萘系和聚羧酸系4种减水剂的适应性的系统性研究,并与粒化高炉矿渣进行宏观的量化对比;另外,运用正交试验对掺入玄武岩的P·O42.5R水泥进行自由液相量的微观分析。研究结果表明:掺8%玄武岩和8%矿渣、比表面积在360 m2/kg~380m2/kg,颗粒级配中小于3μm的含量少于19.0%的水泥,在保证水泥原有的物理性能不下降的条件下,与减水剂的适应性最佳。因此,从工程应用实际出发,用峨眉山玄武岩部分或全部替代供应日趋紧张的粉煤灰和矿渣等工业废产物作水泥混合材在理论和实践上是完全可行的。
[Abstract]:In this paper, using Emeishan basalt as mixing material, relatively reasonable particle gradation of cement can be obtained by controlling the amount of basalt and grinding method. The influence of different admixture amount of granulated blast furnace slag or pulverized coal powder on the basic chemical and physical properties of P 路O _ 42.5R cement was found out, and then different mixing amount, different standard consistency water consumption and different fineness were carried out. Systematic study on the adaptability of P 路O _ 42.5R cement with naphthalene and polycarboxylic acid series superplasticizer, and a macroscopic quantitative comparison with granulated blast furnace slag. The free liquid content of P 路O _ 42.5R cement mixed with basalt was analyzed by orthogonal test. The results showed that the specific surface area of P 路O _ 42.5R cement mixed with 8% basalt and 8% slag was 380m ~ 2 / kg, and the particle gradation was less than 19.0% 渭 m, the specific surface area of P 路O _ 42.5R cement was 380m ~ 2 / kg, and the particle gradation of P 路O _ 42.5R cement was less than 19.0% 渭 m. Under the condition that the original physical properties of cement are not decreased, the adaptability of cement to water reducer is the best. It is feasible in theory and practice to use Emeishan basalt partly or wholly to replace the industrial waste products such as fly ash and slag which are becoming increasingly tight in theory and practice.
【学位授予单位】：西南科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU528

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