Next Article in Journal
Magnetic Properties of Novel Layered Disulfides CuCr0.99Ln0.01S2 (Ln = La…Lu)
Next Article in Special Issue
Oil Spill Sorber Based on Extrinsically Magnetizable Porous Geopolymer
Previous Article in Journal
Experimental and Analytical Analysis of Mechanical Properties for Large-Size Lattice Truss Panel Structure Including Role of Connected Structure
Previous Article in Special Issue
A Three-Phase Transport Model for High-Temperature Concrete Simulations Validated with X-ray CT Data
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Materials
Volume 14
Issue 17
10.3390/ma14175102
materials-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
Article

Thermally Treated Waste Silt as Filler in Geopolymer Cement

by
Abbas Solouki
1,*,
Alireza Fathollahi
2,
Giovanni Viscomi
3,
Piergiorgio Tataranni
1,
Giovanni Valdrè
4,
Stephen J. Coupe
2 and
Cesare Sangiorgi
1
1
Department of Civil, Chemical, Environmental and Materials Engineering, University of Bologna, Via Terracini 28, 40131 Bologna, Italy
2
Centre for Agroecology Water and Resilience (CAWR), Coventry University, Wolston Lane, Ryton-on-Dunsmore CV8 3LG, UK
3
Bologna Strade, Via Zanardi 372/2, 40131 Bologna, Italy
4
Department of Biological, Geological, and Environmental Sciences, University of Bologna, Piazza di Porta San Donato 1, 40126 Bologna, Italy
*
Author to whom correspondence should be addressed.
Materials 2021, 14(17), 5102; https://doi.org/10.3390/ma14175102
Submission received: 14 July 2021 / Revised: 22 August 2021 / Accepted: 31 August 2021 / Published: 6 September 2021
(This article belongs to the Special Issue Feature Papers in Construction and Building Materials)
Browse Figures
Versions Notes

Abstract

This study aims to investigate the feasibility of including silt, a by-product of limestone aggregate production, as a filler in geopolymer cement. Two separate phases were planned: The first phase aimed to determine the optimum calcination conditions of the waste silt obtained from Società Azionaria Prodotti Asfaltico Bituminosi Affini (S.A.P.A.B.A. s.r.l.). A Design of Experiment (DOE) was produced, and raw silt was calcined accordingly. Geopolymer cement mixtures were made with sodium or potassium alkali solutions and were tested for compressive strength and leaching. Higher calcination temperatures showed better compressive strength, regardless of liquid type. By considering the compressive strength, leaching, and X-ray diffraction (XRD) analysis, the optimum calcination temperature and time was selected as 750 °C for 2 h. The second phase focused on determining the optimum amount of silt (%) that could be used in a geopolymer cement mixture. The results suggested that the addition of about 55% of silt (total solid weight) as filler can improve the compressive strength of geopolymers made with Na or K liquid activators. Based on the leaching test, the cumulative concentrations of the released trace elements from the geopolymer specimens into the leachant were lower than the thresholds for European standards.
Keywords: quarry waste; silt calcination; ambient temperature curing; aggregate recycling; DOE; DSLT quarry waste; silt calcination; ambient temperature curing; aggregate recycling; DOE; DSLT

Share and Cite

MDPI and ACS Style

Solouki, A.; Fathollahi, A.; Viscomi, G.; Tataranni, P.; Valdrè, G.; Coupe, S.J.; Sangiorgi, C. Thermally Treated Waste Silt as Filler in Geopolymer Cement. Materials 2021, 14, 5102. https://doi.org/10.3390/ma14175102

AMA Style

Solouki A, Fathollahi A, Viscomi G, Tataranni P, Valdrè G, Coupe SJ, Sangiorgi C. Thermally Treated Waste Silt as Filler in Geopolymer Cement. Materials. 2021; 14(17):5102. https://doi.org/10.3390/ma14175102

Chicago/Turabian Style

Solouki, Abbas, Alireza Fathollahi, Giovanni Viscomi, Piergiorgio Tataranni, Giovanni Valdrè, Stephen J. Coupe, and Cesare Sangiorgi. 2021. "Thermally Treated Waste Silt as Filler in Geopolymer Cement" Materials 14, no. 17: 5102. https://doi.org/10.3390/ma14175102

APA Style

Solouki, A., Fathollahi, A., Viscomi, G., Tataranni, P., Valdrè, G., Coupe, S. J., & Sangiorgi, C. (2021). Thermally Treated Waste Silt as Filler in Geopolymer Cement. Materials, 14(17), 5102. https://doi.org/10.3390/ma14175102

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop