Investigation into the Strength, Hydration, and Microstructural Characteristics of Clinker-Free Cement Composed of Phosphorus Slag, Fluidized Bed Combustion Bottom Ash, and Lime
Yanzhou Peng, Haitian Li, Hefei Yin, Ji Xiao, Gang Xu
TL;DR
Researchers developed a new clinker-free cement using industrial byproducts, achieving strong mechanical properties and durability comparable to traditional cement.
Contribution
A novel clinker-free cement formulation using phosphorus slag and combustion ash with optimized mechanical and durability properties is introduced.
Findings
The optimal PSCM formulation achieved 64.1 MPa compressive and 7.5 MPa flexural strength at 28 days.
PSCM concrete showed better freeze–thaw and sulfate resistance than equivalent Portland cement.
SEM-EDS confirmed calcium and sodium aluminosilicate hydrates as main hydration products in PSCMs.
Abstract
This study focuses on developing a novel clinker-free cement, specifically comprising phosphorus slag-based cementitious materials (PSCMs), by utilizing lime and industrial byproducts, including granulated electric furnace phosphorus slag and fluidized bed combustion bottom ash. The optimal composition of PSCM was determined by investigating the effects of different proportions of activators (water glass and sodium sulfate) and retarder (potassium fluoride) on the setting time and the mechanical strength of PSCMs. Performance evaluations demonstrated that the compressive and flexural strengths of the optimal PSCM formulation at 28 days were 64.1 MPa and 7.5 MPa, respectively. Notably, concrete prepared with the optimal PSCM exhibited superior freeze–thaw resistance and sulfate resistance compared to Portland cement concrete of equivalent strength grades. The comprehensive…
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
Click any figure to enlarge with its caption.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14
Figure 15Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsConcrete and Cement Materials Research · Magnesium Oxide Properties and Applications · Recycling and utilization of industrial and municipal waste in materials production