How Does UHPC Compare to Ordinary Concrete in Price? UHPC Life Cycle Cost Analysis

Simply comparing the per-unit price of UHPC with ordinary concrete is not scientific; a comprehensive analysis from the perspective of whole life cycle cost is required. Although the initial price of UHPC is 10-15 times that of ordinary concrete, its outstanding performance advantages make it more economical over long-term use.

In a sea-crossing bridge deck pavement project in Shenzhen, a detailed life cycle cost analysis showed that although the initial cost of the UHPC pavement layer was 12 times that of ordinary concrete, its 30-year maintenance-free characteristic saved substantial repair costs. Calculations showed that the 30-year total cost of the project using UHPC was actually 40% lower than that of ordinary concrete. More importantly, the UHPC pavement layer is only 50mm thick, one-third that of ordinary concrete. This "thinning" effect reduced the deck's self-weight by 40%, indirectly lowering the bridge structure cost by 15%.

Material Usage Comparison

Under the same load, UHPC member dimensions can be reduced by 50%-70%, greatly lowering actual material usage. In structural design, this material saving effect can partially offset the unit price difference.

Construction Cost Comparison

UHPC has high early strength, allowing earlier formwork removal and a shortened construction period. In a commercial complex project in Shenzhen, the commercial benefits created by the shortened schedule far exceeded the increase in material costs.

Maintenance Cost Comparison

Ordinary concrete structures generally require major repairs every 10-15 years, whereas UHPC can achieve 50 years maintenance-free. This maintenance cost difference is highly significant in long-term operation.

Service Life Comparison

Based on a 100-year service life, the average annual cost of UHPC is actually substantially lower than that of ordinary concrete. For major projects, this long-life value is enormous.

It is recommended to adopt the whole life cycle cost analysis method to scientifically evaluate the true economy of UHPC.