Effect of stainless steel fibers on properties of MgO–C refractories

Shang, Jianzhao; Liu, Bao-liang; Shi, Kai; Liu, Yang; Mi, Yong-hao; Fan, Wenhao; He, Yi-xian

doi:10.1007/s42243-023-00938-0

Cited by 4 publications

(2 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The study highlighted that knurled stainless-steel fibers achieved the most favorable mechanical properties and pull-out test results. Shang et al [ 23 ] suggest incorporating stainless-steel fibers into MgO-C refractories enhances flexural strength. This improvement occurs through physical embedding at room temperature and reaction bonding at high temperatures.…”

Section: Introductionmentioning

confidence: 99%

Investigating the High-Temperature Bonding Performance of Refractory Castables with Ribbed Stainless-Steel Bars

Plioplys,

Antonovič,

Boris

et al. 2024

Materials

View full text Add to dashboard Cite

Refractory materials containing calcium aluminate cement (CAC) are commonly used in the metallurgical and petrochemical industries due to their exceptional mechanical resistance, even at temperatures exceeding 1000 °C, and do not require additional reinforcement. This study seeks to advance this practice by developing ultra-high-performance structures that offer building protection against fire and explosions. Such structures require bar reinforcement to withstand accidental tension stresses, and the bond performance becomes crucial. However, the compressive strength of these materials may not correlate with their bond resistance under high-temperature conditions. This study investigates the bond behavior of ribbed stainless austenitic steel bars in refractory materials typical for structural projects. The analysis considers three chamotte-based compositions, i.e., a conventional castable (CC) with 25 wt% CAC, a medium-cement castable (MCC) with 12 wt% CAC, a low-cement castable (LCC), and a low-cement bauxite-based castable (LCB); the LCC and LCB castables contain 7 wt% CAC. The first three refractory compositions were designed to achieve a cold compressive strength (CCS) of 100 MPa, while the LCB mix proportions were set to reach a CCS of 150 MPa. Mechanical and pull-out tests were conducted after treatment at 400 °C, 600 °C, 800 °C, and 1000 °C; reference specimens were not subjected to additional temperature treatment. This study used X-ray fluorescence (XRF), X-ray diffraction (XRD), and scanning electron microscopy (SEM) methods to capture the material alterations. The test results indicated that the bonding resistance, expressed in terms of the pull-out deformation energy, did not directly correlate with the compressive strength, supporting the research hypothesis.

show abstract

Section: Introductionmentioning

confidence: 99%

Investigating the High-Temperature Bonding Performance of Refractory Castables with Ribbed Stainless-Steel Bars

Plioplys,

Antonovič,

Boris

et al. 2024

Materials

View full text Add to dashboard Cite

show abstract

“…Stainless steel can help prevent corrosion [17], and fiber reinforcement is a typical solution [18,19]. However, studies of refractory materials with bar reinforcements are rare.…”

Section: Introductionmentioning

confidence: 99%

Bond Behavior of Stainless-Steel and Ordinary Reinforcement Bars in Refractory Castables under Elevated Temperatures

Plioplys,

Kudžma,

Sokolov

et al. 2023

J. Compos. Sci.

View full text Add to dashboard Cite

Refractory castables, i.e., refractory aggregates and ultra-fine particle mixtures with calcium aluminate cement (CAC) and deflocculants, were created 40 years ago for the metallurgy and petrochemical industries. These materials demonstrate outstanding performance even over 1000 °C. Typically, they have no structural reinforcement, resisting compression stresses because of the combination of temperature and mechanical loads. This study is a part of the research project that develops high-temperature resistance composite material suitable for fire and explosion protection of building structures. However, this application is impossible without structural reinforcement, and the bond performance problem becomes essential under high temperatures. This experimental work conducts pull-out tests of austenitic stainless 304 steel bars and typical structural S500 steel bars embedded in refractory castables after high-temperature treatments. This study includes plain and ribbed bars and considers two castable materials designed with 25 wt% CAC content for 50 MPa compressive strength after drying (typical design) and 100 MPa strength (modified with 2.5 wt% microsilica). This test program includes 115 samples for pull-out tests and 88 specimens for compression. As expected, the tests demonstrated the plain bars’ inability to resist the bond stresses already at 400 °C; on the contrary, ribbed bars, even made of structural steel, could ensure a mechanical bond with cement matrix up to 1000 °C. However, only stainless steel bars formed a reliable bond with the high-performance castable, determining a promising object for high-temperature applications. Still, the scatter of the test results did not ensure a reliable bonding model. In addition, the castable strength might not be optimal to ensure maximum bond performance. Thus, the test results clarified the research objectives for further developing the reinforced composite.

show abstract

Enhancing mechanical properties and thermal shock resistance of steel fiber reinforced mullite castable through magnetic field treatment

Li,

et al. 2024

Construction and Building Materials

View full text Add to dashboard Cite

Effect of stainless steel fibers on properties of MgO–C refractories

Cited by 4 publications

References 30 publications

Investigating the High-Temperature Bonding Performance of Refractory Castables with Ribbed Stainless-Steel Bars

Investigating the High-Temperature Bonding Performance of Refractory Castables with Ribbed Stainless-Steel Bars

Bond Behavior of Stainless-Steel and Ordinary Reinforcement Bars in Refractory Castables under Elevated Temperatures

Enhancing mechanical properties and thermal shock resistance of steel fiber reinforced mullite castable through magnetic field treatment

Contact Info

Product

Resources

About