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Preparation of one‐part geopolymeric precursors using vanadium tailing by thermal activation
Author(s) -
Luo Yongpeng,
Bao Shenxu,
Zhang Yimin
Publication year - 2020
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.16835
Subject(s) - geopolymer , metakaolin , compressive strength , materials science , vanadium , roasting , curing (chemistry) , composite material , chemical engineering , metallurgy , engineering
The main purpose of this study is to develop a user‐friendly one‐part geopolymer using vanadium tailing (VT). Geopolymeric precursor consists of activated VT and metakaolin that can react directly with water to form geopolymers. The roasting temperature plays an important role in the VT activation, which affects the compressive strength of the final geopolymer. The geopolymer with accepted compressive strength, that is 29.0 MPa after 7 days curing in ambient condition, can be prepared using VT after thermal activation at appropriate temperature (400‐600°C). As the roasting temperature is increased to 700°C, the VT is molten and sintered and the ability of providing alkaline and Si 4+ is drastically weakened, which results in a poor compressive strength geopolymer.