Hydration mechanisms of sewage sludge ashes used as cement replacement

被引：56

作者：

Mejdi, Mehdi ^{[1
,2
]}

Saillio, Mickael ^{[1
]}

Chaussadent, Thierry ^{[1
]}

Divet, Loic ^{[1
]}

Tagnit-Hamou, Arezki ^{[2
]}

机构：

[1] Univ Gustave Eiffel, MAST, CPDM, IFSTTAR, F-77447 Marne La Vallee, France

[2] Univ Sherbrooke, Dept Genie Civil, Sherbrooke, PQ J1K 2R1, Canada

来源：

CEMENT AND CONCRETE RESEARCH | 2020年 / 135卷

关键词：

Sewage sludge ash; Cement hydration; AFm phase; Kinetics; Phase assemblage; WASTE-WATER SLUDGE; PORTLAND CEMENTS; GLAZED TILES; MAS NMR; PASTES; PHASE; PERFORMANCE; COMBUSTION; LIMESTONE; AL-27;

D O I：

10.1016/j.cemconres.2020.106115

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The influence of sewage sludge ash (SSA) on the hydration of Portland cement (OPC) was investigated in this study. Blending OPC with SSA was found to influence the kinetic of hydration, notably the alite dissolution. This retardation effect has been attributed to the presence of the orthophosphate ions (PO43-). However, SSA releases only a small fraction of PO43- into solution, which is deemed insufficient to precipitate calcium phosphates compounds on noticeable levels at least. On the other hand, an enhancement of the engineering-scale properties (i.e. mechanical and durability) and portlandite consumption are observed when SSA is used. This is explained by the formation of AFm phases, which leads to changes in the total volume of the solid and thus the properties of the systems. These experimental results were confirmed by thermodynamic modelling, showing that the additional alumina released by SSA results in the formation of higher amount of AFt and AFm phases.

引用

页数：11

共 50 条

[21] The behaviour of phosphorus and heavy metals in sewage sludge ashes
Han, J.
Kanchanapiya, P.
Sakano, T.
Mikuni, T.
Furuuchi, M.
Wang, G.
INTERNATIONAL JOURNAL OF ENVIRONMENT AND POLLUTION, 2009, 37 (04) : 357 - 368
[22] Thermochemical treatment of sewage sludge ashes for phosphorus recovery
Adam, C.
Peplinski, B.
Michaelis, M.
Kley, G.
Simon, F. -G.
WASTE MANAGEMENT, 2009, 29 (03) : 1122 - 1128
[23] ABSENCE OF ASBESTOS IN MUNICIPAL SEWAGE-SLUDGE ASHES
PATELMANDLIK, KJ
MANOS, CG
LISK, DJ
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY, 1988, 40 (05) : 703 - 706
[24] Possibility of recycling the biomass ashes in sewage sludge management
Wojcik, Marta
Stachowicz, Feliks
Trzepiecinski, Tomasz
Maslon, Adam Andrzej
Opalinski, Ireneusz
ARCHIVES OF ENVIRONMENTAL PROTECTION, 2018, 44 (03) : 51 - 57
[25] The application of biomass ashes for improvement of sewage sludge dewatering
Wojcik, Marta
Stachowicz, Feliks
Maslon, Adam
9TH CONFERENCE ON INTERDISCIPLINARY PROBLEMS IN ENVIRONMENTAL PROTECTION AND ENGINEERING (EKO-DOK 2017), 2017, 17
[26] Hydration mechanism and phase assemblage of blended cement with iron-rich sewage sludge ash
Xia, Yan
Liu, Minghao
Zhao, Yading
Chi, Xiaofeng
Guo, Junzhen
Du, Donghang
Du, Jianxin
JOURNAL OF BUILDING ENGINEERING, 2023, 63
[27] Mechanical properties of concrete containing microwaved sewage sludge ash as partial cement replacement
Doh, S., I
Aizat, A. Muhammad
Chin, S. C.
Jing, G. Q.
NATIONAL COLLOQUIUM ON WIND AND EARTHQUAKE ENGINEERING, 2019, 244
[28] Utilization of acid-washed sewage sludge ash as sand or cement replacement in concrete
Ottosen, Lisbeth M.
Thornberg, Dines
Cohen, Yariv
Stiernstrom, Sara
RESOURCES CONSERVATION AND RECYCLING, 2022, 176
[29] Potential use of sewage sludge ash (SSA) as a cement replacement in precast concrete blocks
Perez-Carrion, M.
Baeza-Brotons, F.
Paya, J.
Saval, J. M.
Zornoza, E.
Borrachero, M. V.
Garces, P.
MATERIALES DE CONSTRUCCION, 2014, 64 (313)
[30] Investigations of the influence of different fly ashes on cement hydration
B. Pacewska
G. Blonkowski
I. Wilińska
Journal of Thermal Analysis and Calorimetry, 2006, 86 : 179 - 186

← 1 2 3 4 5 →