Before evaluating materials, it is essential to understand the primary deterioration mechanisms affecting port pavements:<\/p>\n\n\n\n
- \n
- Extreme axle loads:<\/strong> Continuous 24\/7 movement of prime movers, reach stackers, and RTG cranes generates intense, dynamic, and repetitive loading.<\/li>\n\n\n\n
- Massive static loads:<\/strong> Stacked containers impose long-term compressive stress on pavement surfaces and substructures.<\/li>\n\n\n\n
- Chloride attack (marine exposure):<\/strong> Chloride ions from seawater penetrate the material matrix, accelerating reinforcement corrosion and internal structural degradation.<\/li>\n\n\n\n
- Thermal variation: <\/strong>Surface temperatures can reach up to 60\u201370\u00b0C under solar radiation. During asphalt paving, temperatures may approach 180\u00b0C. These thermal cycles induce significant expansion\u2013contraction stresses.<\/li>\n<\/ul>\n\n\n\n
2. Objective Assessment of Conventional Materials<\/strong>:<\/h1>\n\n\n\n
2.1 Asphalt Concrete: Rutting and Accelerated Ageing<\/em><\/strong>
<\/h2>\n\n\n\nAsphalt is often selected due to its lower initial investment and fast return-to-service capability. However, under port operating conditions, critical weaknesses emerge:<\/p>\n\n\n\n
![\"Problems](\"https:\/\/dema.vn\/wp-content\/uploads\/2026\/04\/Bai-dang-website-PCE-1-Trang-web-5-1024x576.png\")
Problems of Asphalt Concrete<\/figcaption><\/figure>\n\n\n\n - \n
- Wheel-path rutting:<\/strong> At elevated temperatures, bitumen softens. Repetitive heavy wheel loads along fixed trajectories cause plastic deformation, forming deep ruts.<\/li>\n\n\n\n
- Accelerated oxidation and ageing:<\/strong> UV radiation and salt exposure oxidise bitumen, reducing elasticity and leading to brittle cracking and surface ravelling.<\/li>\n\n\n\n
- Water infiltration:<\/strong> Seawater penetrates through cracks, weakening the base layers and causing potholes and localised settlement.<\/li>\n<\/ul>\n\n\n\n
2.2 Conventional Cement Concrete: Cracking and Corrosion Risks<\/em><\/strong><\/h2>\n\n\n\n
Although cement concrete generally offers superior load-bearing capacity compared to asphalt, standard concrete without performance enhancement faces significant durability risks:<\/p>\n\n\n\n
![\"Problems](\"https:\/\/dema.vn\/wp-content\/uploads\/2026\/04\/Bai-dang-website-PCE-1-Trang-web-8-1024x576.png\")
Problems of Conventionals Concrete<\/figcaption><\/figure>\n\n\n\n - \n
- Reinforcement corrosion: <\/strong>The capillary pore structure of conventional concrete allows chloride ingress. Corrosion products expand, generating internal tensile stress and surface cracking.<\/li>\n\n\n\n
- Surface delamination and abrasion:<\/strong> Under repeated dynamic loads and high friction, insufficient surface hardness leads to abrasion, dusting, and large-scale surface spalling.<\/li>\n<\/ul>\n\n\n\n
3. Engineering Trend: Surface Performance Enhancement Instead of Full Demolition<\/strong><\/h1>\n\n\n\n
International best practice shows that for existing port structures, the preferred strategy is not:<\/p>\n\n\n\n
- \n
- Full demolition<\/li>\n\n\n\n
- Complete reconstruction<\/li>\n<\/ul>\n\n\n\n
But rather:<\/p>\n\n\n\n
- \n
- Surface strengthening<\/li>\n\n\n\n
- Increasing structural density and impermeability<\/li>\n\n\n\n
- Upgrading resistance to repetitive dynamic loading<\/li>\n\n\n\n
- High-performance overlay systems provide:<\/li>\n\n\n\n
- Reduced operational downtime<\/li>\n\n\n\n
- Optimised life-cycle cost<\/li>\n\n\n\n
- Protection of existing structural assets<\/li>\n<\/ul>\n\n\n\n
4. DEMA\u2019s Engineering Approach to Port Pavement Rehabilitation<\/strong><\/h1>\n\n\n\n
From an engineering standpoint, a sustainable solution for port pavements must simultaneously achieve:<\/p>\n\n\n\n
- \n
- Resistance to repetitive dynamic loads<\/li>\n\n\n\n
- High microstructural density to limit permeability<\/li>\n\n\n\n
- Chloride resistance<\/li>\n\n\n\n
- Strong bonding with the existing substrate<\/li>\n\n\n\n
- Long-term thermal and mechanical stability<\/li>\n<\/ul>\n\n\n\n
The Demalay (latex-modified concrete) system developed by DEMA is engineered to:<\/p>\n\n\n\n
- \n
- Increase microstructural density<\/li>\n\n\n\n
- Enhance bond strength to existing concrete<\/li>\n\n\n\n
- Improve abrasion resistance<\/li>\n\n\n\n
- Reduce permeability<\/li>\n<\/ul>\n\n\n\n
Rather than delivering a temporary surface treatment, the objective is to extend service life and mitigate long-term structural degradation risks.<\/p>\n\n\n\n
5. Conclusion: Durability Is a System-Level Decision<\/strong><\/h1>\n\n\n\n
In port terminals, the issue is not simply choosing between asphalt and conventional concrete.<\/p>\n\n\n\n
The core challenge lies in:<\/p>\n\n\n\n
- \n
- Understanding deterioration mechanisms<\/li>\n\n\n\n
- Designing materials based on actual service environments<\/li>\n\n\n\n
- Controlling construction quality and curing<\/li>\n\n\n\n
- Evaluating life-cycle cost instead of initial cost<\/li>\n<\/ul>\n\n\n\n
In modern logistics operations where continuous uptime is critical, investing in the right pavement engineering solution is not merely a technical decision \u2014 it is a strategic one.
<\/p>\n\n\n\n<\/p>\n","protected":false},"excerpt":{"rendered":"
Port terminals and container yards are among the most aggressive service environments for pavement and slab structures. Selecting materials without rigorous engineering assessment of heavy-duty traffic and marine exposure conditions often leads to premature deterioration,...<\/p>","protected":false},"author":1,"featured_media":1942,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[40],"tags":[],"class_list":["post-1938","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-insights"],"yoast_head":"\n
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- Surface delamination and abrasion:<\/strong> Under repeated dynamic loads and high friction, insufficient surface hardness leads to abrasion, dusting, and large-scale surface spalling.<\/li>\n<\/ul>\n\n\n\n
- Accelerated oxidation and ageing:<\/strong> UV radiation and salt exposure oxidise bitumen, reducing elasticity and leading to brittle cracking and surface ravelling.<\/li>\n\n\n\n
- Massive static loads:<\/strong> Stacked containers impose long-term compressive stress on pavement surfaces and substructures.<\/li>\n\n\n\n