Optimisation and mechanism of steel slag–cement based grouting for water ingress control
Source abstract
Abstract
Grouting is an effective and practical emergency technique for controlling sudden water ingress in tunnel construction. This study investigated the performance optimization and engineering applicability of a steel slag (SS)-cement-based composite grouting material for water inrush scenarios. The effects of the water-to-cement (W/C) ratio, SS content, and water reducer (WR) dosage on workability, strength, and microstructure were evaluated. The optimal mix (W/C = 0.5, SS = 8%, WR = 1.5%) demonstrated high fluidity (25.6 cm), adjustable pumpability (20–50 min), and late-stage compressive strength of 23.43 MPa. Microstructural analysis revealed densification from hydration products, with average pore size reducing from 53 nm to 43 nm. Field application in the Dongdashan Tunnel confirmed excellent water-blocking performance under complex hydrogeological conditions. This work offers a high-performance, sustainable grouting solution that promotes the reuse of industrial by-products.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Grouting, Rheology, and Soil Mechanics · Concrete and Cement Materials Research · Innovative concrete reinforcement materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (58)
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