Analysis of alkali-activated mineral wool-slag binders: evaluating the differences between one-part and two-part variations

被引：7

作者：

Adesanya, Elijah ^{[1
]}

Dabbebi, Rawia ^{[1
]}

Roessler, Christine ^{[2
]}

Pavlin, Majda ^{[3
]}

Li, Zhenming ^{[4
]}

Luukkonen, Tero ^{[1
]}

Yliniemi, Juho ^{[1
]}

Illikainen, Mirja ^{[1
]}

机构：

[1] Univ Oulu, Fac Technol, Fiber & Particle Engn Res Unit, Oulu, Finland

[2] Bauhaus Univ Weimar, FA Finger Inst Bldg Mat Sci, Thuringen, Germany

[3] Slovenian Natl Bldg & Civil Engn Inst, Ljubljana, Slovenia

[4] Delft Univ Technol, Fac Civil Engn & Geosci, Dept Mat Mech Management & Design, Delft, Netherlands

来源：

JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT | 2024年 / 26卷 / 02期

基金：

芬兰科学院; 欧盟地平线“2020”;

关键词：

Blast furnace slag; Alkali activation; Glass wool; Stone wool; One-part; Two-part; BLAST-FURNACE SLAG; EXTERNAL SULFATE ATTACK; FLY-ASH; HYDRATION; CEMENT; WASTE; CHEMISTRY; STRENGTH; KINETICS; PHASES;

D O I：

10.1007/s10163-023-01878-3

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Two synthesis pathways (one- and two-part) in alkali-activated binders were compared using ground granulated blast furnace slag (GGBFS), mineral wool (MW) activated using dry and liquid alkali activators with similar Na2O/SiO2 modulus. The effect of activator type on reaction kinetics, strength development, setting times, and durability shows that one-part synthesis does not only improve early strength, but also provide better durability properties. While the highest compressive strength (56 MPa, 90 days) was achieved for the one-part mix (DM), the reaction products (presence of Mg-Al layered double hydroxide and C-S-H-like phases) observed for both mortar mixes were similar. The DM mortars showed better resistance to sulfate attack than two-part mix (WM) mortars and sets faster. The results highlight the significance of the one-part pathways in the synthesis of alkali-activated materials.

引用

页码：1001 / 1011

页数：11

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