Enhanced impact resistance of novel sustainable preplaced aggregate geopolymer concrete reinforced with steel mesh and 5D fibers.

The rising demand for sustainable concrete stems from resource scarcity, environmental concerns, and structural performance needs. Preplaced Aggregate Concrete (PAC) improves durability and efficiency but requires alternative binders to lessen dependence on Portland cement. This study explores the formulation of a sustainable geopolymer grout, incorporating red clay, slag, and fly ash, to address these concerns while promoting the reutilization of industrial by-products.

A convolutional neural network-based deep learning approach for predicting surface chloride concentration of concrete in marine tidal zones.

Chloride-induced corrosion is a major threat to the durability of reinforced concrete (RC) structures. This is especially critical in marine tidal zones, where surface chloride concentration (Cs) plays a key role in predicting chloride ingress using Fick's second law. However, traditional assessment methods are time-consuming and impractical, necessitating advanced predictive models.

AI driven prediction of early age compressive strength in ultra high performance fiber reinforced concrete.

Ultra-high-performance fiber-reinforced concrete (UHPFRC) is an exceptional type of cementitious composite with superior mechanical and durability performances. Achieving these properties involves maintaining a low water-to-cement ratio, optimizing aggregate size distribution, and integrating fiber reinforcement. Recently, there has been a notable trend in the development and application of UHPFRCs.

Synergistic effects of basalt fiber and volcanic pumice powder in high-strength geopolymer concrete.

This paper explores the synergistic effects of basalt fiber (BF) and volcanic pumice powder (VPP) on the physico-mechanical, thermal characteristics, efflorescence, and microstructure of high-strength geopolymer concrete (HSGC). HSGC mixtures were developed by partially replacing ground granulated blast furnace slag with 0-40% VPP while incorporating BF in the range of 0-1.5%.

Valorization of recycled concrete powder, clay brick powder, and volcanic pumice powder in sustainable geopolymer concrete.

The use of recycled powder as a binder in geopolymer concrete (GPC) represents a promising approach to reducing construction waste and promoting the production of sustainable materials. This study examines the impact of recycled concrete powder (RCP), clay brick powder (CBP), and volcanic pumice powder (VPP) on the mechanical, durability, and thermal properties of GPC with fly ash and slag under water curing. Key mechanical properties, including compressive strength (CS), splitting tensile strength, and flexural strength, were evaluated, while durability was assessed through water absorption, water penetration, and resistance to sulfate and acid attacks.

Assessment of soil quality along the elevation gradient of the Seti River watershed in Pokhara Metropolitan City, Nepal.

Soil quality is essential for sustaining agricultural productivity, globally. Hence, this study evaluated the effects of elevation gradients and soil depths on agricultural land quality in the Seti River watershed, Pokhara Metropolitan City (PMC), Nepal. Using a stratified random sampling method, 60 samples were collected across three elevation gradients (500-700 m, 700.