Influence of Fe2O3, MgO and Molarity of NaOH Solution on the Mechanical Properties of Fly Ash-Based Geopolymers

被引：2

作者：

Ionescu, Bradut Alexandru ^{[1
,2
]}

Chira, Mihail ^{[1
]}

Vermesan, Horatiu ^{[3
]}

Hegyi, Andreea ^{[1
]}

Lazarescu, Adrian-Victor ^{[1
]}

Thalmaier, Gyorgy ^{[3
]}

Neamtu, Bogdan Viorel ^{[3
]}

Gabor, Timea ^{[3
]}

Sur, Ioana Monica ^{[3
]}

机构：

[1] NIRD Urban INCERC Cluj Napoca Branch, Cluj Napoca 400524, Romania

[2] Tech Univ Cluj Napoca, IOSUD UTCN Doctoral Sch, 15 Daicoviciu St, Cluj Napoca 400020, Romania

[3] Tech Univ Cluj Napoca, Fac Mat & Environm Engn, 103-105 Muncii Blvd, Cluj Napoca 400641, Romania

来源：

MATERIALS | 2022年 / 15卷 / 19期

关键词：

geopolymer; compressive strength; Fe2O3; MgO; ALKALI-ACTIVATED SLAG; DRYING SHRINKAGE; EARLY HYDRATION; PART I; MICROSTRUCTURE; CONCRETE; PERMEABILITY; ADMIXTURES; ADDITIVES; STRENGTH;

D O I：

10.3390/ma15196965

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The use of waste from industrial activities is of particular importance for environmental protection. Fly ash has a high potential in the production of construction materials. In the present study, the use of fly ash in the production of geopolymer paste and the effect of Fe2O3, MgO and molarity of NaOH solution on the mechanical strength of geopolymer paste are presented. Samples resulting from the heat treatment of the geopolymer paste were subjected to mechanical tests and SEM, EDS and XRD analyses. Samples were obtained using 6 molar and 8 molar NaOH solution with and without the addition of Fe2O3 and MgO. Samples obtained using a 6 molar NaOH solution where Fe2O3 and MgO were added had higher mechanical strengths compared to the other samples.

引用

页数：18

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