Influence of nano-blast furnace slag on microstructure, mechanical and corrosion characteristics of concrete

被引：25

作者：

Sadawy, M. M. ^{[1
]}

Nooman, M. T. ^{[2
]}

机构：

[1] Al Azhar Univ, Min & Petr Engn Dept, Cairo, Egypt

[2] Al Azhar Univ, Fac Engn, Civil Engn Dept, Cairo, Egypt

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2020年 / 251卷

关键词：

Nano-blast furnace slag (NBFS); Concrete; Mechanical properties; Durability; Corrosion resistance; FLY-ASH; COMPRESSIVE STRENGTH; HYDRATION KINETICS; CEMENT; STEEL; PERFORMANCE; RESISTANCE; POROSITY; SILICA; NANOPARTICLES;

D O I：

10.1016/j.matchemphys.2020.123092

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, the influence of nano-blast furnace slag (NBFS) on microstructure, mechanical and corrosion characteristics of concrete has been evaluated. The cement was replaced with NBFS at different percentages of 1, 2, 3, 4 and 5% by weight of cement. X-ray diffraction (XRD) and scanning electron microscope (SEM) connected with energy dispersive X-ray unit (EDS) were used to examine the microstructure characteristic of the different samples. The compressive strength, capillary water absorption and thermal analysis of the hardened concretes were evaluated according to ASTM standards. The corrosion resistance of the steel bar imbedded in concrete was assessed using different electrochemical techniques. The results of XRD and SEM examinations showed that incorporating NBFS into the concrete remarkably diminished the intensities of portlandite peaks and a dense structure was obtained. Further, significant enhancements in the mechanical properties, durability and corrosion resistance were attained with increasing NBFS in the concrete.

引用

页数：12

共 35 条

[1] Effect of nano clay particles on mechanical, thermal and physical behaviours of waste-glass cement mortars [J].