Research on Durability Analysis and Improvement Strategies for UHPC Shapes in Garden Landscapes

In contemporary landscape garden design, material selection not only concerns aesthetic presentation but also determines the life cycle and maintenance costs of landscape works. Ultra-High Performance Concrete (UHPC), with its outstanding mechanical properties and shaping plasticity, is becoming the preferred material for creating iconic landscape gardens. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group draws on practical experience from hundreds of landscape projects to deeply analyze the durability challenges of UHPC in landscape applications and propose systematic improvement strategies, providing professional solutions for designers and owners.

### Durability Advantages and Practical Challenges of UHPC Landscape Garden Components

With its ultra-high compressive strength (≥150MPa), excellent impermeability (permeability height ratio ≤5%), and extremely low shrinkage rate (≤0.08mm/m), UHPC theoretically offers durability that surpasses traditional concrete. In the irregular-shaped seating project at the Nanning Garden Expo Park that Qinglong participated in, UHPC components underwent 3 years of natural exposure testing with no obvious weathering traces on the surface and color retention above 90%, confirming their stability in outdoor environments. However, the special working conditions of landscape gardens still pose severe tests for the material: long-term alternating wet and dry conditions can easily lead to surface efflorescence, plant root exudates may cause chemical corrosion, and extreme temperature differences may result in micro-cracks. Especially in the high-temperature, high-humidity environment of the Lingnan region, the durability of ordinary UHPC components requires further improvement through targeted technical optimization.

### Material Formula Optimization: Building a “Protective Shield” for the Garden Environment

Qinglong Group’s R&D Center strengthens UHPC’s environmental adaptability through three technical approaches: First, adopting a composite mineral admixture system that blends silica fume and ultra-fine mineral powder at a 3:1 ratio, making the cement hydration products denser and reducing the chloride ion permeability coefficient to 1.2×10⁻¹²m²/s; Second, introducing a nano-scale titanium dioxide (TiO₂) modifier to form a photocatalytic layer on the material surface that automatically decomposes attached algae and pollutants—testing shows its self-cleaning efficiency is 40% higher than ordinary UHPC; Third, optimizing the steel fiber distribution process with a random three-dimensional distribution technology, maintaining shape fluidity even when fiber content reaches 2%, raising the component’s flexural strength to 35MPa and effectively resisting micro-cracks caused by temperature stress. These technical innovations have been applied in the UHPC artistic landscape wall project at a riverside park in Guangzhou, with an expected service life of over 50 years.

### Full Life Cycle Management: Systematic Assurance from Design to Maintenance

As a national high-tech enterprise integrating detailed design, manufacturing, construction installation, and after-sales maintenance, Qinglong has established a full life cycle management system for UHPC landscape components. In the design phase, BIM technology is used to simulate temperature field distribution across different climate zones, with structural reinforcement applied to weak parts; the production process adopts a dual-stage process combining steam curing and natural curing to ensure full hydration and avoid internal stress accumulation; installation innovatively uses adjustable stainless steel connectors, allowing components to undergo micro-displacement within a ±30mm range to accommodate foundation settlement and temperature deformation. Particularly crucial is Qinglong’s original “Landscape Component Health Monitoring System,” which collects real-time data on humidity, strain, and more through embedded sensors, combined with regular on-site inspections, to form the “UHPC Landscape Component Maintenance White Paper,” providing owners with complete technical support from project delivery to later-stage maintenance.

### Industry Collaborative Innovation: Promoting Standardization of UHPC Landscape Applications

As a participating unit in compiling the industry standard “General Technical Conditions for Non-Load-Bearing Components of Ultra-High Performance Concrete (UHPC),” Qinglong Group is actively promoting the standardized development of UHPC landscape garden applications. Through jointly establishing the “UHPC Landscape Technology Joint Laboratory” with South China University of Technology, it conducts research on durability in extreme environments; and by partnering with renowned domestic design institutes to compile the “UHPC Landscape Garden Design Guidelines,” it clarifies material selection, structural joints, and installation processes for different application scenarios. In an ecological park project in Dongguan, Qinglong worked closely with designers to use UHPC to replicate the traditional Lingnan lime sculpture craft, preserving cultural heritage while enhancing durability—the project won the “Guangdong Province Excellent Landscape Engineering Gold Award.” This “industry-academia-research-application” collaborative model is accelerating the transformation of UHPC from high-end technology to widespread garden applications.

From sculptural pieces in city squares to boardwalk railings in wetland parks, UHPC is reshaping the expressiveness and durability of landscape gardens with its material characteristics combining strength and flexibility. Qinglong Group will continue to uphold the values of “Honesty, Striving, Trust, and Collaboration,” relying on 58 patented technologies and full-chain service capabilities to provide solid material technology support for creating “century-lasting gardens,” making every UHPC landscape work an artistic masterpiece that stands the test of time.