Utilization of alum sludge waste for production of eco-friendly blended cement

被引：19
作者：
Mohamed, O. A. [1 ]
El-Gamal, S. M. A. [2 ]
Farghali, A. A. [3 ]
机构：
[1] Beni Suef Univ, Fac Postgrad Studies Adv Sci, Environm Sci & Ind Dev Dept, Bani Suwayf 62511, Egypt
[2] Ain Shams Univ, Chem Dept, Fac Sci, Cairo, Egypt
[3] Beni Suef Univ, Fac Postgrad Studies Adv Sci PSAS, Mat Sci & Nanotechnol Dept, Bani Suwayf 62511, Egypt
来源：
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT | 2022年 / 24卷 / 03期
关键词：
CuFe2O4; spinel; Activated alum sludge; Stability against firing; Morphological features; MECHANICAL-PROPERTIES; FIRE RESISTANCE; PHYSICOCHEMICAL CHARACTERISTICS; COMPRESSIVE STRENGTH; CARBON NANOTUBES; PASTES; FE2O3;
D O I：
10.1007/s10163-022-01369-x
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This work was focused on evaluating the suitability of replacing Portland cement (PC) by 5, 10 and 15 mass % of activated alum sludge waste (AAS) as a pozzolanic material. Exploitation of low-cost nanocomposite for bolstering the physical, mechanical, and stability against firing of PC-AAS-hardened composites was inspected. CuFe2O4 spinel nanoparticle with average particle size (similar to 50 nm) was prepared. Inclusion of CuFe2O4 spinel in different PC-AAS-hardened composites bolsters their physicomechanical features at almost normal curing ages as well as their stability against firing. The positive impact of synthesized CuFe2O4 spinel was affirmed via TGA/DTG and XRD techniques, which indicated the presence of diverse hydration yields such as CSHs, CASHs, CFSH, and CuSH that enhance the overall physicomechanical characteristics and thermal stability of various PC-AAS-hardened composites. The composite containing (90 PC-10 AAS waste-2 CuFe2O4) offers many benefits from the economic and environmental view.
引用
收藏
页码：949 / 970
页数：22
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