Journal of Architectural Research and Development

Effect of Pore Structure on Purification of Pervious Concrete

2025-04-04T13:08:44+08:00

By adding zeolite aggregate with good adsorption properties, different mix ratios of added zeolite pervious concrete (ZPC) were designed to compare the water purification effect of ordinary pervious concrete and water purification tests that were conducted. The pore characteristics of the pervious concrete were identified using three-dimensional reconstruction software and the relationship between pore structure and water purification performance was quantified by gray entropy correlation analysis. The results showed that the purification efficiency of zeolite-doped pervious concrete was 17.6%–22.3% higher than that of ordinary pervious concrete. The characteristic parameters of the pore structure of permeable concrete, i.e. planar porosity and tortuosity, were determined using three-dimensional reconstruction software. The correlation between the degree of tortuosity and the removal rate reached more than 0.90, indicating that the internal pore structure of pervious concrete has a good correlation with the water purification performance.

Research on the Application of Refined Management in Construction Industry Management

2025-04-04T13:15:22+08:00

Refined management, as a management concept and method that pursues efficiency, quality, and low consumption, has been applied in various industries. Due to its particularity, the construction industry needs to strengthen management and refined management has become the primary choice for the industry, which is of great significance for its stable development. The article elaborates on the definition of refined management, analyzes the necessity of refined management in the construction industry, and explores the application measures of refined management in construction industry management, aiming to provide reference for improving the management level of the construction industry.

The Ecological Code of Landscape Cities: Traditional Feng Shui Patterns for Modern Sustainable Spatial Designs

2025-03-28T15:11:10+08:00

The traditional Feng Shui pattern embodies rich ecological wisdom and philosophical thoughts, which are of great significance to the modern sustainable space design. The core concepts of Feng Shui patterns from traditional civilization can provide a theoretical foundation and research framework for this study. By integrating these principles, such as “hiding the wind and gathering the Qi” and “backing the mountain and facing the water”, a functional relationship between urban structures can be established. This approach can help optimize the spatial layout of urban elements, minimize energy consumption, and enhance environmental comfort. It also examines the influence of the ShanShui City pattern in traditional Feng Shui on guiding the development of modern urban ecological networks, as well as its role in protecting and restoring biodiversity through ecological corridors and ecological nodes. The modern urban design of traditional Feng Shui culture focuses on the inheritance and innovation of riotous things and the combination of traditional Feng Shui concepts and modern design concepts to form ecological spaces with cultural connotation. This paper hopes to give some inspiration or methods for contemporary urban design and to reconcile the relationship between human and nature through these thoughts.

Research on Dam Safety and Risk Management in Water Conservancy Engineering

2025-04-03T17:21:40+08:00

As the country with the highest number of dams in the world, China’s dam safety management and risk control are crucial to public safety and economic development. This paper systematically analyzes the current status of dam safety in China, explores the causes of accidents such as design and construction defects, poor operation management, the impact of natural disasters, and proposes comprehensive dam safety management measures based on these analyses.

Ecological Security Assessment and Risk Management Framework for Recycled Water Systems in Landscape Hydration

2025-04-04T13:24:46+08:00

Against the backdrop of intensifying global water scarcity, reclaimed water reuse has emerged as a critical strategy for ecological replenishment of landscape water bodies. However, its potential ecological risks remain underexplored. This study aims to establish a multidimensional ecological safety evaluation framework for reclaimed water replenishment systems and propose hierarchical risk prevention strategies. By integrating ecotoxicological assays (algae growth inhibition, Daphnia behavioral anomalies, zebrafish embryo toxicity), multimedia exposure modeling, and Monte Carlo probabilistic simulations, the risk contributions and spatial heterogeneity of typical pollutants are quantitatively analyzed. Results revealed that sulfamethoxazole (RQ = 2.3) and diclofenac (RQ = 1.8) posed high ecological risks, with their effects nonlinearly correlated with hydraulic retention time (HRT < 3 days) and nutrient loading (TN >1.2 mg/L). A three-tier risk prevention system was developed based on the “source-pathway-receptor” framework: ozone-activated carbon pretreatment achieved 85% removal efficiency for pharmaceutical contaminants, ecological floating beds enhanced nitrogen and phosphorus retention by 40%–60%, and hydraulic regulation (flow velocity > 0.1 m/s) effectively suppressed pathogen proliferation. The innovation of this study lies in establishing a chemical-biological-hydrological coupled risk quantification model for reclaimed water reuse scenarios. The hierarchical prevention standards have been incorporated into local reclaimed water management regulations, providing a scientific foundation and technical paradigm for sustainable landscape water replenishment.

The Influence of Coal Gangue Particle Gradation on the Performance of Inorganic Foamed Paste Backfill Materials

2025-04-04T13:37:37+08:00

The issue of top contact in paste backfill materials is a common technical challenge in coal mine filling processes, and overcoming this problem has become a significant research direction in current studies and engineering practices. This paper utilizes coal gangue as aggregate and hydrogen peroxide as a foaming agent to prepare foamed paste backfill materials. Three close-packing theories were employed to investigate the effects of different coal gangue particle gradations on the mechanical properties, expansion ratio, water absorption, and dry density of foamed paste backfill materials under the same foaming agent content. The hydration mechanism and pore structure evolution were analyzed using XRD, SEM, and OSM techniques. The results indicate that when the hydrogen peroxide addition is 5%, the foamed paste backfill material regulated by MAA gradation theory exhibits the best comprehensive performance, achieving a 28-day compressive strength of 0.89 MPa, an expansion ratio of 155.5%, and a dry density of 1.24 g/cm³. The regulation of coal gangue aggregate particle gradation not only improves the foaming efficiency but also allows the formation of CH to fill the material pores, enhancing the overall structural support capacity and forming a closer microstructure. This research provides new insights into controlling the properties of foamed paste backfill materials.

Effect of Different Mineral Admixtures on the Dry Shrinkage and Mechanical Properties of Mortar

2025-03-28T14:58:19+08:00

In this paper, the effects of four different mineral ginseng materials on the mechanical properties of mortar were studied, and the results showed that high territory, fly ash, and silica fume had an inhibitory effect on the drying shrinkage of mortar, and mineral powder increased the drying shrinkage of mortar. The high territory in the mineral admixture has the best effect on the inhibition of mortar drying shrinkage. The compressive strength and flexural strength of the mortar can be improved by adding a certain amount of mineral admixture, which increases the compressive strength by about 20%-40% and the flexural strength by about 20%-30% compared with the control group, and the improvement effect difference between different components is not large.

Discussion on Smart Strategies for Barrier-Free Design of Outdoor Spaces in Healthcare and Wellness Buildings in Chongqing

2025-04-07T15:48:48+08:00

With the gradual deepening of aging, the barrier-free design of outdoor spaces in healthcare and wellness buildings is crucial to the quality of life for the elderly in their later years. The mountainous terrain of Chongqing poses higher requirements for barrier-free design. This paper analyzes the barrier-free needs of the elderly, systematically reviews the current status of barrier-free design in Chongqing’s healthcare and wellness buildings, and proposes targeted smart strategy suggestions from four aspects: barrier-free transportation space, activity space, landscape sketches, and place spirit, combining regional characteristics. These suggestions aim to improve and enhance the quality of the elderly care environment in Chongqing.

Atomic-Level Understanding of Contact Potential of Quartz Surface

2025-04-08T09:13:29+08:00

Laboratory and field observations have suggested a correlation between contact dynamics and slow dynamics. The underlying mechanical mechanisms at the contact level require investigation at the nanoscale. This study uses molecular dynamics (MD) simulations to investigate the interactions between two quartz plates separated by a water film, focusing on the relationship between adhesion force and separation distance. The density and orientation angle profiles were calculated from simulation data to investigate the relationship between the interfacial structure of the water film and contact potential. The simulations reveal multiple metastable states of the contact potential, consistent with existing theoretical models. The results show that the contact force is influenced by the structure of the water film, including oscillation forces and stratification. This provided verification and development for existing theoretical models based on metastable contacts.