Effect of Mine Water Environment on Durability of Solid Backfilling Based on Carbonated Coal-Based Waste.

The durability of solid backfilling based on carbonated coal-based waste (CCBW) under mine water environments is critical for its engineering feasibility. This study investigates the deterioration mechanisms of CCBW exposed to acid solution (Acid W), alkaline solution (Alkaline W), and mine water (Mine W) through hydrochemical analysis, XRD, and SEM. Results reveal that the uniaxial compressive strength of CCBW decreased by 10.

Corrigendum to "Study on the fluidity of foamed alkali-activated slag cementitious material (AASCM)" [Heliyon 9(11) November 2023 e22277].

[This corrects the article DOI: 10.1016/j.heliyon.

Study on the fluidity of foamed alkali-activated slag cementitious material (AASCM).

This study aims to investigate the evolution patterns of fluidity and rheological properties of AASCM under varying dosages of foaming agent and particle sizes of filling aggregate. The flow characteristics of AASCM are significantly affected by the filling aggregate's size and the foaming agent's dosage. Specifically, an increase in filling aggregate size (D(4,3) ϵ [26 μm, 69 μm]) enhances the fluidity of foamed AASCM, while an increase in foaming agent dosage reduces fluidity.

Experimental Investigation of CO-Induced Silica Gel as the Water Blocking Grout Effect of Aquifer Ions.

This study aimed to prevent water flow in microcracks and simultaneously achieve CO capture during grouting (CCG). Using sodium silicate (SS) as the primary material, the microcracks were grouted by a two-step approach. The low-initial-viscosity (5 mPa s) SS was first saturated within the microcracks followed by CO injection at 2 MPa.