陶瓷粉末在可持续耐热水泥基复合材料中的作用

IF 8 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Construction and Building Materials Pub Date : 2025-06-04 DOI:10.1016/j.conbuildmat.2025.142095

Dana Koňáková, Kateřina Šádková, Romana Vaníčková, Vojtěch Pommer, Martin Keppert, Eva Vejmelková

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引用次数: 0

摘要

本研究探讨了用陶瓷粉（CP）和活性氧化铝（RA）取代铝酸钙水泥（CAC）的潜力，以创造耐热和可持续的水泥基复合材料。共设计了14种混合料，其掺合比最高可达60% %，并对CAC进行了评估，选择了两种三元体系（A15-C15和A15-C30）进行详细分析。虽然单独使用CP会增加孔隙度并降低强度，但与RA结合使用可显著提高性能。A15-C15和A15-C30混合物的抗压强度分别为107.6 MPa和93.5 MPa，孔隙率降低，耐热性提高至1400℃。量热法显示A15-C15保持较高的水化活性（280 J/g），而A15-C30的水化路径发生改变。相和热分析表明，亚稳水合物和铝硅酸钙水合物的相组成发生了变化。老化证实了复合材料的长期耐久性。

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The role of ceramic powder in sustainable thermal-resistant cement-based composites

This study investigates the potential of substituting calcium aluminate cement (CAC) with ceramic powder (CP) and reactive alumina (RA) to create thermally resistant and sustainable cement-based composites. A total of 14 mixes were designed with varying admixture ratios up to 60 % of CAC were evaluated, with two ternary systems (A15-C15 and A15-C30) selected for detailed analysis. While CP alone increased porosity and reduced strength, its combination with RA significantly improved performance. The A15-C15 and A15-C30 mixtures achieved compressive strengths of 107.6 MPa and 93.5 MPa, respectively, with reduced porosity and enhanced thermal resistance up to 1400 °C. Calorimetry showed that A15-C15 maintained high hydration activity (280 J/g), while A15-C30 followed an altered hydration path. Phase and thermal analyses revealed altered phase composition with reduced metastable hydrates and calcium aluminosilicate hydrates. Aging confirmed the long-term durability of studied composites.

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来源期刊

Construction and Building Materials 工程技术-材料科学：综合

CiteScore

13.80

自引率

21.60%

发文量

3632

审稿时长

82 days

期刊介绍： Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged. Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.