Influence of Metakaolin and steel fibers on stress strain behavior of concrete

Abstract

This article describes the effects of different proportions of metakaolin and steel fiber on the stress-strain behavior of concrete. Concrete has become an important part of infrastructure development due to its wide and wide application. However, its brittleness can cause cracking, and cause some deterioration problems and infrastructure failures. Considering the problem of cracking performance, researchers around the world have conducted various studies to develop concrete with higher performance, longer life, and minimized destructive effects on nature. In order to obtain such characteristics, researchers only focus on the improvement of strength. It is observed that the higher compressive strength can make the substitution rate of metakaolin 16% and that of steel fiber 1.5%. Although the published literature provides some theoretical models and a large amount of experimental data on the compressive performance of fiber-reinforced concrete, there are still considerable reservations about the applicability of these models in design. Stress-strain curve is required for correct design and repair. This article introduces the results of compression tests of steel fiber reinforced concrete carried out in accordance with standard procedures, and rigorously evaluates the proposed model to define compressive stress-strain behavior. The reported test was performed on cylindrical specimens of plain and steel fiber reinforced metakaolin with fiber content of 0.5%, 1.0% and 1.5%. The concrete grade considered in this study is M40.

Mechanical properties of polymer fibre reinforced concrete in the light of various standards

“…Metakaolin is a pozzolanic material formed during a calcination process of kaolinitic clay. As a consequence of MK addition to the concrete mix, the reduction of chloride permeability [7], increase of sulfate [8], and acid attack [9] resistance was noted in other studies. The positive effect of MK incorporation was also recognized in decreasing water absorption, water penetration, porosity [9], sorptivity [10], and shrinkage [11].…”

Novel binder material in geopolymer mortar production: Obsidian stone powder

“…28 Since the middle of the 20th century, intensive and detailed studies on strength and micro-structure properties insertion of metakaolin to paste, mortar, and concrete have been carried out and attracted the attention of many researchers. 29 Lahoti et al studied silica fume and metakaolin geopolymer mixtures by keeping the Si/Al ratio in the range of 1.03-2. 30 The outcome of the study, 62 MPa value was obtained for uniaxial compressive strength at room temperature curing conditions.…”

“…It contains 50%–55% SiO 2 and 40%–45% Al 2 O 3 in its chemical composition 28 . Since the middle of the 20th century, intensive and detailed studies on strength and micro‐structure properties insertion of metakaolin to paste, mortar, and concrete have been carried out and attracted the attention of many researchers 29 . Lahoti et al studied silica fume and metakaolin geopolymer mixtures by keeping the Si/Al ratio in the range of 1.03–2 30 .…”

Optimizing Concrete Performance through Metakaolin and Flyash Incorporation: A Critical Appraisal of Regression Modeling and Design Code Applicability

“…The long-term testing on the chloride-penetration resistance of concrete containing high-reactivity MK, offering insights into the material's durability and resistance to chloride-induced deterioration in construction applications [6]. The study reviews the in uence of MK in concrete mixtures, offering insights into its effects on concrete properties for potential improvements in construction materials [7]. The CS and chloride resistance of MK concrete, offering insights into its potential for durable construction and resistance to chloride-induced deterioration [8].…”