EFFECT OF SODIUM ALUMINATE ON THE FRESH AND HARDENED PROPERTIES OF FLY ASH-BASED ONE-PART GEOPOLYMER

被引：3

作者：

Wan-En, Ooi ^{[1
,2
]}

Yun-Mingo, Liew ^{[1
,2
]}

Yong, Heah Cheng ^{[2
,3
]}

Li-Ngee, Ho ^{[2
,4
]}

Abdullah, Mohd Mustafa Al Bakri ^{[1
,2
]}

Shee-Ween, Ong ^{[1
,2
]}

Sandu, Andrei Victor ^{[5
]}

机构：

[1] Univ Malaysia Perlis, Ctr Excellence Geopolymer & Green Technol CEGEOGT, Kangar 01000, Perlis, Malaysia

[2] Univ Malaysia Perlis, Fac Chem Engn Technol, Kangar 01000, Perlis, Malaysia

[3] Univ Malaysia Perlis, Fac Mech Engn Technol, Kangar 01000, Perlis, Malaysia

[4] Univ Malaysia Perlis, Ctr Excellence Frontier Mat Res FRONTMATEKANGAR, Kangar 01000, Perlis, Malaysia

[5] Gheorghe Asachi Tech Univ Iasi, Fac Mat Sci & Engn, Iasi 700050, Romania

来源：

ARCHIVES OF METALLURGY AND MATERIALS | 2022年 / 67卷 / 02期

关键词：

Geopolymer; One-part geopolymer; Fly ash; Sodium Aluminate; Sodium Metasilicate; SILICA; MIXES; HEAT;

D O I：

10.24425/amm.2022.137775

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The one-part geopolymer binder was synthesis from the mixing of aluminosilicate material with solid alkali activators. The properties of one-part geopolymers vary according to the type and amount of solid alkali activators used. This paper presents the erect of various sodium metasilicate-to-sodium aluminate (NaAlO2/Na2SiO3) ratios on fly ash-based one-part geopolymer. The NaAlO2/Na2SiO3 ratios were set at 1.0 to 3.0. Setting time of fresh one-part geopolymer was examined through Vicat needle apparatus. Mechanical and microstructural properties of developed specimens were analysed after 28 days of curing in ambient condition. The study concluded that an increase in NaAlO2 content delayed the setting time of one-part geopolymer paste. The highest compressive strength was achieved at the NaAlO2/Na2SiO3 ratio of 2.5, which was 33.65 MPa. The microstructural analysis revealed a homogeneous structure at the optimum ratio. While the sodium aluminium silicate hydrate (N-A-S-H) and anorthite phases were detected from the XRD analysis.

引用

页码：441 / 445

页数：5

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