Enhancing the Mechanical Properties of Ultra-High-Performance Concrete (UHPC) Through Silica Sand Replacement with Steel Slag

Buildings, Journal Year: 2024, Volume and Issue: 14(11), P. 3520 - 3520

Published: Nov. 4, 2024

In modern construction, increasing the sustainability of materials without sacrificing performance is crucial. Ultra-High-Performance Concrete (UHPC) known for its exceptional strength and durability. However, incorporating waste optimizing mix still a key focus. The main goal this article to evaluate enhancement mechanical properties UHPC by replacing silica sand with steel slag at various percentages (25%, 50%, 75%, 100%). With purpose, we measured compressive, tensile, flexural strengths, as well relative density water absorption. It was found that best occurs 50% replacement, exhibiting maximum compressive 126 MPa (+13.5%), bending 11.6 (+20.8%), tensile 7.2 (+6.5%). Moreover, same 5.1% decrease in CO2 eq. emissions found. exceeding threshold led deterioration UHPC’s properties, SEM images revealed mainly caused weakened bond between cement matrix aggregates. Thus, it concluded use may significantly improve structural integrity when adequate replacement percentage adopted (around 50%), being viable alternative traditional aggregates also has environmental advantages (e.g., reduced carbon emissions).

Language: Английский

Sustainable High-Performance Concrete Using Zeolite Powder: Mechanical and Carbon Footprint Analyses

Buildings, Journal Year: 2024, Volume and Issue: 14(11), P. 3660 - 3660

Published: Nov. 18, 2024

This study investigates environmentally friendly high-performance concrete (HPC) by partially replacing cement and silica sand with zeolite powder. The replacement levels included 10%, 20%, 30% for up to 50% sand. optimal mix achieved 85 MPa compressive strength, 6 tensile 7.8 flexural strength a replacement, reducing the carbon footprint approximately 659.72 kg CO2/m3. These findings demonstrate potential of powder enhance sustainability in HPC without compromising essential mechanical properties, promoting eco-friendly practices construction.

Language: Английский

Enhancing strength properties of fiber-reinforced concrete using graded alkali-resistant glass fibers

Innovative Infrastructure Solutions, Journal Year: 2025, Volume and Issue: 10(3)

Published: Feb. 24, 2025

Language: Английский