A Study on Reactive Ultra-Fine Fly Ash and Sulfoaluminate Cement in Self-Leveling Mortar
Source abstract
Abstract
The purpose of this study is to find appropriate mixtures for self-leveling mortar that meet the fluidity requirements without displaying segregation by using a combination of two types of cement (Type I Portland cement and sulfoaluminate cement (SAC)) with reactive ultra-fine fly ash (RUFA). Unlike the fly ash, RUFA has a strong strength activity index and exhibits a significant pattern of amorphous phase in XRD. Appropriate mix proportions of raw materials, including the superplasticizer, require investigation in depth. A fixed water-to-binder ratio of 0.6 was selected, with varying proportions of the two cementitious materials considered (the SAC volume percentages were 0%, 10%, 20%, and 30%) and different RUFA contents (the RUFA volume percentages were 5%, 10%, and 15%). Twelve experiments were conducted to examine the properties of the self-leveling mortars. We found that a higher RUFA volume percentage results in lower porosity, higher compressive strength, and better resistance to drying shrinkage, abrasion, and restrained shrinkage cracking. Increasing the SAC volume percentage increases the porosity of self-leveling mortar and its early compressive strength but decreases late-stage strength. At a 10% volume percentage level, SAC achieves an ideal balance among drying shrinkage, brasion, and shrinkage cracking.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Concrete and Cement Materials Research · Innovative concrete reinforcement materials · Magnesium Oxide Properties and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Harbor and River Engineering, National Taiwan Ocean University, Keelung 20231, Taiwan
References (36)
Show source-provided references
1. Analysis of the effect of various types of limestone as a main constituent of cement on the chosen properties of cement pastes and mortars10.2478/ace-2019-0035 ↗
2. Shrinkage in Cementitious Self-Levelling Floor Compounds10.4028/www.scientific.net/SSP.292.23 ↗
3. Lam, N.N., Prud’homme, E., and Georgian, J.F. (2020). Effect of calcium sulfate type and dosage on early strength and porosity of self-leveling underlayment. Lecture Notes in Civil Engineering, Springer.10.1007/978-981-15-0802-8_85 ↗
4. Fresh and Hardened Properties of Self-Leveling Mortars with Porcelain and Red Ceramic Wastes10.1155/2018/6378643 ↗
5. The Effect of Re-Dispersible Polymer Powders on Cement-Based Self-Leveling Mortar10.4028/www.scientific.net/KEM.730.395 ↗
6. Ahmed, H., Shelby, E., Amar, O., Ahmed, R., Oran, S., Fatty, A., Gharries, Y.A., Abused, M.N., and Foamy, E.H. (2016, January 1–4). Self-leveling mortar: Why and how. Resilient infrastructure. Proceedings of the 2016 CSCE Annual Conference, London, UK.
7. An alkali activated binder for high chemical resistant self-leveling mortar
8. Effect of chemical admixtures on setting time, fluidity and mechanical properties of phosphorus gypsum based self-leveling mortar10.1007/s12205-016-0849-y ↗
9. Development of low weight self-levelling mortars10.1088/1742-6596/582/1/012030 ↗
10. Influence of pumping agent and expansion agent on properties of self-leveling pavement mortar
11. Drying and hydration of cement based self-leveling flooring compounds10.1080/07373930701728372 ↗
12. Dong, W.Y., Fang, C.Q., and Hu, R. (2019). Study on properties of binary composite cementitious self-leveling Mortar. IOP Conference Series: Materials Science and Engineering, Kazimierz Dolny, Poland, 21–23 November 2019, IOP Publishing.10.1088/1757-899X/592/1/012003 ↗
13. Schaefer, C.O., Cherian, M., and Rocha, J.C. (2017). Production of synthetic phosphoanhydrite and its use as a binder in self-leveling underlayment. Materials, 10.10.3390/ma10080958 ↗
14. Khalil, N., Aouad, G., Kleib, J., and Rémond, S. (2023). Portland/sufloaluminate cement Blends for the Control of Early Age Hydration and Yield Stress. Buildings, 13.10.3390/buildings13020409 ↗
15. Potential application of Portland cement-calcium sulfoaluminate cement blends to avoid early age frost damage10.1016/j.conbuildmat.2020.118869 ↗
16. Tambura, L.U.D., Cherian, M., and Rocha, J.C. (2018). Development of alkaline-activated self-leveling hybrid mortar ash-based composites. Materials, 11.10.3390/ma11101829 ↗
17. Torréns-Martín, D., Fernández-Carrasco, L.J., and Blanco-Varela, M.T. (2023). Up to 100% replacement of natural materials from residues: Recycling blast furnace slag and fly ash as self-leveling cementitious building materials. Materials, 16.10.3390/ma16093350 ↗
18. Reactive ultra-fine fly ash as an additive for cement-based materials10.1016/j.mtcomm.2020.101466 ↗
19. Characterization of ultra-fine fly ash as sustainable cementitious material for masonry construction10.1016/j.asej.2020.07.008 ↗
20. Effect of ultra-fine fly ash on concrete performance and durability10.1016/j.conbuildmat.2020.120493 ↗
21. The effect of fly ash fineness on heat of hydration, microstructure, flow and compressive strength of blended cement pastes
22. Delihowski, J., Stempkowska, P.W.A., and Jarosz, M. (2024). The influence of selected grain size fractions of coal fly ash on properties of clay-cement mortars used for the flood levees construction. Sci. Rep., 14.10.1038/s41598-024-72315-0 ↗
23. A study on the effective utilization of ultrafine fly ash and silica fume content in high-performance concrete through an experimental approach10.1016/j.heliyon.2024.e39678 ↗
24. Influence of kenaf and polypropylene fibers on mechanical and durability properties of fibre reinforced lightweight foamed concrete
25. (2020). Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens) (Standard No. ASTM C109/C109M-20).
26. (2023). Standard Practice for Installation Methods for Cement-based Adhered Masonry Veneer (Standard No. ASTM C1780-20).
27. (2024). Standard Guide for Measurement of the Rheological Properties of Hydraulic Cementious Paste Using a Rotational Rheometer (Standard No. ASTM C1749-17).
28. (2019). Standard Test Method for Marsh Funnel Viscosity of Construction Slurries (Standard No. ASTM D6910/D6910M-19).
29. (2021). Standard Test Methods for Time of Setting of Hydraulic Cement by Vicar Needle (Standard No. ASTM C191-21).
30. (2022). Standard Test Method for Expansion and Bleeding of Freshly Mixed Grouts for Preplaced-Aggregate Concrete in the Laboratory (Standard No. ASTM C940-16).
31. (2021). Standard Test Method for Flexural Strength of Hydraulic-Cement Mortars (Standard No. ASTM C348-21).
32. (2023). Standard Test Method for Drying Shrinkage of Mortar Containing Hydraulic Cement (Standard No. ASTM C596-23).
33. (2021). Coating Materials for Textured Finishes of Buildings (Standard No. JIS A 6909:2021).
34. (2014). Standard Test Method for Abrasion Resistance of Horizontal Concrete Surfaces (Standard No. ASTM C779/C 779M).
35. (2010). Standard Test Method for Determining Age at Cracking and Induced Tensile Stress Characteristics of Mortar and Concrete under Restrained Shrinkage (Standard No. ASTM C1581/C1581M-09).
36. (2017). Standard Test Method for Determination of Pore Volume and Pore Volume Distribution of Soil and Rock by Mercury Intrusion Porosimetry (Standard No. ASTM D4404-84).