Review of Basalt Fiber‐Reinforced Concrete in China: Alkali Resistance of Fibers and Static Mechanical Properties of Composites

Abstract

Research on three-dimensional, randomly distributed BFRC in China is analyzed and summarized in relative depth in this study.e results indicate that the effect of the fiber component and alkali corrosion temperature on the alkali resistance of BF is significant; the BF has little effect on the compressive strength of the concrete; the tensile and flexural strengths of the composites significantly increase compared with plain concrete, and the fiber content has a significant effect on the strength. In light of some problems in the current research, six possible research topics are suggested: (1) investigating the alkali resistance of the BF under dynamic temperatures, lower alkali concentrations, and longer alkali corrosion times; (2) improving the alkali resistance of the BF by increasing its hydrophobicity; (3) determining the optimal fiber distribution orientation of the BF with various characteristic parameters; (4) establishing the calculation formulas for the critical content and critical aspect ratio of various types of BF; (5) determining the optimal mixture ratio of two or more fibers in the FRC while studying the complementary mechanisms between each other; and (6) improving the dispersion of the BF and the BF/matrix interfacial properties.

Influence of Alkali Resistant Basalt Fiber Strengthened with Saturated Ca(OH)2 on Cement Mortar Performance

“…Cam elyaflar evrensel olarak yüksek performanslı kompozit malzemelerde kullanılmasına rağmen, alkali koşullarda zayıf bir stabiliteye sahiptir [7]. Son yıllarda farklı araştırmacılar tarafından yapılan deneysel çalışmalarda BL'nin çimento bağlayıcılı sistemlerde kullanımında başlıca iki hususa dikkat çekilmiştir [8][9][10][11][12][13]: Çimento hidratasyonunda alkalilik özelliğinin minimize edilmesi veya bazalt lifinin yüzeyi ve bünyesi alkali ortam için kimyasal ön bir işlemle kuvvetlendirilmesi işlemi. Bu alternatif uygulamalar ile bazalt lifleri çimento hidratasyonunun alkali ortamına karşı daha kimyasal kararlı bir forma getirilmiş olur.…”

Expanded clay basalt fiber concrete: Solving structural defects caused by water penetration

“…Water absorption by immersion and total pore volume are considered better indicators in evaluating the potential durability of concrete than capillary absorption (Levy & Helene, 2004). Despite the advances in studies and utilizing construction, gap like durability still needs more to be covered on the characteristics of expanded clay and basalt fiber (Guo et al, 2018;Monaldo et al, 2019;Sim et al, 2005). Water penetration and inability of some concrete walls and floors deteriorate ( Figure 1) the building faster and affect its functionality, and it causes musty odors or mildew growth in the space (Maruthupandian, 2018).…”

Fibre-Reinforced Geopolymer Composites Micro-Nanochemistry by SEM-EDS Simulations

“…Hence, the use of analytical techniques at the micro and nano-scale, such as scanning electron microscopy (SEM) and energy dispersive X-ray microanalysis (EDS), transmission electron microscopy (TEM) and electron energy loss spectroscopy (EELS), nuclear magnetic resonance (NMR), micro-computed tomography (µCT) and scanning probe microscopy (SPM), is required to obtain information of these composite materials, which are fundamental to better understand their mechanical performances at the macroscopic scale [13,[16][17][18][19][20]. From this perspective, SEM coupled with EDS is a suitable instrumental approach to characterize the micro/nanomorphology, the texture and architecture and the local chemistry of both freshly synthesized geopolymeric composites and mechanically stressed specimens [21,22]. Indeed, the correlation between morphology and local chemistry is of utmost importance to devise fibre-reinforced geopolymeric composites with desired mechanical properties because these are controlled by several factors.…”