Synthetic aperture radar interferometry (InSAR) technology has emerged as a critical methodology for disaster reduction and prevention, offering unprecedented all-weather operational capabilities and extensive spatial coverage that effectively address the limitations of traditional detection methods. Despite the inherent challenges of temporal and spatial coherence in conventional time-series InSAR approaches, the small baseline subset InSAR (SBAS-InSAR) technique presents a sophisticated solution by significantly mitigating coherence-related uncertainties and enhancing measurement precision. While existing research predominantly focuses on urban environments, this study uniquely addresses the research gap in mountainous terrain deformation monitoring by utilizing Sentinel-1A and 1B single-look complex (SLC) data from ascending and descending orbits between January 2018 and May 2022. The comprehensive analysis of land subsidence in northern Tianjin’s mountainous region revealed multi-directional surface deformation characteristics, with validation against GNSS Kriging interpolation data demonstrating root mean square errors of 5.74 mm and 5.09 mm in vertical and east–west directions, respectively. The investigation exposed predominantly horizontal deformation influenced by large-scale engineering activities, topographic conditions, and precipitation patterns, with notable findings including a maximum north–south deformation of 54.62 mm in the Maojiayu landslide area and vertical cumulative deformations of 21.10 mm and − 10.31 mm in Maojiayu and Taoosi landslide areas. These results substantiate the efficacy of InSAR technology in monitoring surface deformation in mountainous regions, offering critical insights for regional geological disaster prevention and mitigation strategies.

This study examined the thermal reflective properties of composite inorganic coatings applied to various wall types. It evaluated the influence of these coatings on the thermal insulation and reflectivity of the walls. The findings indicate that coating application markedly enhances a wall’s thermal insulation capabilities and increases its heat flux reflection ratio. These results offer crucial theoretical backing and practical guidance for the future use of coating technologies in construction. By refining the coating formulations and application processes, the thermal insulation properties of walls can be further enhanced, thus making a significant contribution to building energy efficiency and environmental protection. Consequently, this research provides essential references and insights for advancing coating technology in the construction industry.

Concrete is a cornerstone material in the construction industry owing to its versatile performance; however, its inherent brittleness, low tensile strength, and poor permeability resistance limit its broader application. Graphene, with its exceptional thermal conductivity, stable lattice structure, and high specific surface area, presents a transformative solution to these challenges. Despite its promise, comprehensive studies on the multifunctional properties and underlying mechanisms of graphene-enhanced concrete remain scarce. In this study, we developed a novel concrete composite incorporating cement, coarse sand, crushed stone, water, and graphene, systematically investigating the effects of the graphene dosage and curing duration on its performance. Our results demonstrate that graphene incorporation markedly improves the material’s density, brittleness, thermal conductivity, and permeability resistance. Notably, a comprehensive analysis of scanning electron microscopy (SEM) images and thermogravimetric (TG) data demonstrates that graphene-modified concrete exhibits a denser microstructure and the enhanced formation of hydration products compared to conventional concrete. In addition, the graphene-reinforced concrete exhibited a 44% increase in compressive strength, a 0.7% enhancement in the photothermal absorption capacity, a 0.4% decrease in maximum heat release, a 0.8% increase in heat-storage capacity, and a 200% reduction in the maximum penetration depth. These findings underscore the significant potential of graphene-reinforced concrete for advanced construction applications, offering superior mechanical strength, thermal regulation, and durability.

Concrete is a cornerstone material in the construction industry owing to its versatile performance; however, its inherent brittleness, low tensile strength, and poor permeability resistance limit its broader application. Graphene, with its exceptional thermal conductivity, stable lattice structure, and high specific surface area, presents a transformative solution to these challenges. Despite its promise, comprehensive studies on the multifunctional properties and underlying mechanisms of graphene-enhanced concrete remain scarce. In this study, we developed a novel concrete composite incorporating cement, coarse sand, crushed stone, water, and graphene, systematically investigating the effects of graphene dosage and curing duration on its performance. Our results demonstrate that graphene incorporation markedly improves the material’s density, brittleness, thermal conductivity, and permeability resistance. Notably, the graphene-reinforced concrete exhibited a 44% increase in compressive strength, a 7.5% enhancement in photothermal absorption capacity, and a 200% reduction in water permeability compared to conventional concrete. Additionally, the composite showed a 5.5% decrease in maximum heat release and a 13% increase in heat storage capacity. These findings underscore the significant potential of graphene-reinforced concrete for advanced construction applications, offering superior mechanical strength, thermal regulation, and durability.