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Quartz-Based Castables with Calcium Silicate Cement as Binder-Mineralizer: Replacing Shaped Product for Large-Scale Fabrication

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Quartz-Based Castables with Calcium Silicate Cement as Binder-Mineralizer: Replacing Shaped Product for Large-Scale Fabrication

Zuling Chen 1 Yawei Li 1,2,* Ning Liao 1,2,* Wenjing Liu 1 Shengli Jin 1,2,* Wanneng Yuan 3 Baoshan Tian 3 Wenxian Bai 4 Dayan Xu 4
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1
State Key Laboratory of Advanced Refractories, Wuhan University of Science and Technology, Wuhan 430081, China
2
National-Provincial Joint Engineering Research Center of High Temperature Materials and Lining Technology, Wuhan University of Science and Technology, Wuhan 430081, China
3
Xinjiang Ba Yi Iron and Steel Group Co., Ltd., Urumqi 830022, China
4
Sinosteel Luonai Materials Technology Corporation, Luoyang 471039, China
*
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Received: 06 February 2026 Revised: 11 March 2026 Accepted: 16 March 2026 Published: 25 March 2026

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© 2026 The authors. This is an open access article under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/).

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High-Temp. Mat. 2026, 3(1), 10006; DOI: 10.70322/htm.2026.10006
ABSTRACT: To meet the demand for intelligent masonry of large-sized silica bricks, calcium silicate cement synthesized from high-purity nano CaCO3 and microsilica was used as both binder and mineralizer in quartz-based castables. The effects of cement content (3−5 wt%) on performance were systematically investigated. With optimal retarder (0.015% citric acid monohydrate), the samples achieved early flexural and compressive strengths of 1.30 MPa and 7.0 MPa, respectively, after 24 h curing. During firing at 1430 °C for 20 h, CaO from cement effectively promoted quartz transformation to tridymite. Compared to conventional silica bricks, castables with 5% cement showed residual quartz below 1%, lower apparent porosity, over 2.5−fold higher cold crushing strength, comparable high-temperature creep, and superior refractoriness under load. This study demonstrates the dual gelling and mineralizing role of calcium silicate cement, offering a feasible route for producing large-sized quartz-based precast components.
Keywords: Calcium silicate cement; Quartz-based castables; Mineralization; High-temperature creep
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