石灰石微粉-大掺量粉煤灰绿色混凝土的性能及成

关键字：石灰石,微粉,大掺量,粉煤,灰绿色,混凝土

（1. 浙江建设职业技术学院，浙江 杭州  311231；2.浙江同济科技职业学院，浙江 杭州  311231）

 
    摘要：采用石灰石微粉、粉煤灰和硅酸盐水泥三元复合胶凝体系制备大掺量粉煤灰绿色混凝土（HVFAC），研究粉煤灰和石灰石微粉对HVFAC凝结时间、抗压强度及抗渗性能的影响，并对成本进行分析。结果表明，掺加少量石灰石微粉的HVFAC性能普遍优于不掺石灰石微粉的HVFAC，不仅凝结时间恢复了正常水平，而且抗压强度更高，抗渗性更好。成本分析表明，掺入适量的石灰石微粉能有效提高HVFAC的技术经济效益，更好地发挥其绿色节能的潜力。
    关键词：石灰石微粉；大掺量粉煤灰混凝土（HVFAC）；凝结时间；抗压强度；耐久性；成本分析
    中图分类号：TU528.09        文献标识码：A        文章编号：1001-702X（2017）11-0055-04
 

An investigation on performances and cost analysis of green concrete blending high volume fly ash with limestone powder
CHEN Weidong1，PAN Lijun1，TONG Huizhi2，JIANG Chenhui1
（1.Zhejiang College of Construction，Hangzhou 311231，China；
2.Zhejiang Tongji Vocational College of Science and Technology，Hangzhou 311231，China）

    Abstract：This paper presents performances and cost analysis of high volume fly ash concrete（HVFAC） mixtures based on the combination of limestone powder，fly ash，and Portland cement. Performance has been evaluated by measuring setting times，compressive strength development，and transport properties characterized by rapid chloride permeability test. In addition to restoring setting times to those of the control concrete，small portion of limestone powder in a HVFAC mixture also provide significant improvements in strengths and transport properties. Moreover，based on a simple cost analysis，a HVFAC mixture with proper amount of limestone powder has a superior technical economy benefit and can better play its green energy-saving potential.
    Key words：limestone powder，high volume fly ash concrete（HVFAC），setting time，compressive strength，durability，cost analysis