Material-oriented engineering for eco-optimized structures—a new design approach

Gribniak, Viktor

doi:10.5185/amlett.2023.011713

Cited by 5 publications

(4 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As part of the research project [23], this study highlighted the potential of stainless 304 steel ribbed bars for developing protective refractory shells. Still, reducing the scatter of the pull-out test results (Figure 4d and Table 3) is needed for a reliable bond model.…”

Section: Further Investigationmentioning

confidence: 98%

See 1 more Smart Citation

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

Plioplys,

Kudžma,

Sokolov

et al. 2023

J. Compos. Sci.

Self Cite

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

Section: Further Investigationmentioning

confidence: 98%

“…This study belongs to a research project [23] developing fire protection systems with refractory protective shells. This manuscript investigates the bond performance of steel bars in refractory castables through pull-out tests of smooth and ribbed reinforcement bars.…”

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.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Technology development provides various materials for reinforcing and strengthening concrete structures [ 1 , 2 ]. Fiber-reinforced polymers (FRPs) are a promising steel alternative because they are high-strength, lightweight, immune to corrosion, and electromagnetically transparent [ 3 , 4 , 5 , 6 ]. Still, the relatively low resistance to ultraviolet radiation, elevated temperatures, and humidity reduce the mechanical performance of FRP materials with time [ 7 , 8 , 9 ]; the cycling loads complicate the issue, reducing the mechanical resistance of the reinforcement systems even more [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

“…As mentioned in Section 1.1 and reported in references [ 4 , 36 ], the absence of a uniform testing methodology complicates the comparative analysis of the efficiency of alternative materials and reinforcement layouts reported in the literature. Furthermore, the analysis of full-scale objects is possible but relevant only for the verification of particular solutions.…”

Section: Introductionmentioning

confidence: 99%

Quantifying the Residual Stiffness of Concrete Beams with Polymeric Reinforcement under Repeated Loads

et al. 2023

Self Cite

View full text Add to dashboard Cite

Current technology development ensures a variety of advanced materials and options for reinforcing concrete structures. However, the absence of a uniform testing methodology complicates the quantification and comparative analysis of the mechanical performance of the composite systems. The repeated mechanical loads further complicate the issue. This research extends the recently developed residual stiffness assessment concept to the repeated loading case. It provides an engineer with a simplified testing layout and analytical model to quantify the residual flexural stiffness of standardized laboratory specimens subjected to repeated cycling loads. This model explicitly relates the particular moment and curvature values, requiring neither iterative calculations nor the load history. Thus, this feature allows residual stiffness quantification under repeated loading conditions, including complete reloading of the beam samples imitating the structural strengthening procedure; the proposed technique is equally efficient in quantifying the residual stiffness of the beam samples with any combinations of fiber-reinforced polymer (FRP) reinforcements, i.e., embedded bars, near-surface-mounted strips, and externally bonded sheets. This study employs 12 flexural elements with various reinforcement and loading layouts to illustrate the proposed methodology’s efficiency in quantifying the residual strength of the tension concrete, which estimates the efficiency of the reinforcement system. The explicit quantifying of the residual resistance of the FRP reinforcement systems under repeated load cycles describes the essential novelty of this work.

show abstract

Developing an Adaptive Design Concept for Structural Composites

Gribniak,

Garnevičius

2024

Structural Integrity

View full text Add to dashboard Cite

Material-oriented engineering for eco-optimized structures—a new design approach

Cited by 5 publications

References 25 publications

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

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

Quantifying the Residual Stiffness of Concrete Beams with Polymeric Reinforcement under Repeated Loads

Developing an Adaptive Design Concept for Structural Composites

Contact Info

Product

Resources

About