Effect of silica fume on the mechanical properties of fly ash based-geopolymer concrete

被引：256

作者：

Okoye, F. N. ^{[1
]}

Durgaprasad, J. ^{[1
]}

Singh, N. B. ^{[2
]}

机构：

[1] Sharda Univ, Dept Civil Engn, Greater Noida, India

[2] Sharda Univ, Res & Technol Dev Ctr, Greater Noida, India

来源：

CERAMICS INTERNATIONAL | 2016年 / 42卷 / 02期

关键词：

Geopolymer; Silica fume; Fly ash; Compressive strength; Flexural strength; METAKAOLIN-BASED GEOPOLYMERS; CALCIUM FLY; DURABILITY; STRENGTH; MICROSTRUCTURE; RATIOS;

D O I：

10.1016/j.ceramint.2015.10.084

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this paper fly ash based geopolymer concretes with different percentages of silica fume were made by using NaOH/sodium silicate and cured in an oven at 100 degrees C. Workability, compressive strength, flexural and tensile strengths were determined. Portland cement concrete was used as a reference. Sodium hydroxide (14 M) and sodium silicate were used as alkali activators. The results have shown that addition of silica fume improved the compressive strength of the produced geopolymer concretes. Tensile and flexural strengths also increased as the silica fume content increased. The geopolymer concretes were found quite durable in the presence of 2% H2SO4, 5% Na2SO4 and 5% NaCl. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：3000 / 3006

页数：7

共 27 条

[1] Effect of nano-silica on strength and durability of fly ash based geopolymer mortar [J].