The latest national standard of the Ministry of Housing and Construction! The draft of "Ultra-high Performance Concrete" GB/T 31387 — 2025 has been completed for public consultation, which specifies the performance grade, raw materials, mix design, quality requirements, preparation, curing, test methods and inspection rules of ultra-high performance concrete (UHPC).
Based on the draft of GB/T 31387 — 2025 of Ultra High Performance Concrete, according to the compressive strength grade, the starting strength of UHPC is UC100. Highest strength UC 200:
The notice is as follows (download the full version of the document to view the attachment):
Basic Knowledge-Ultra High Performance Concrete UHPC
Ultra High Performance Concrete, referred to as UHPC, is recognized as "the most innovative cement-based engineering material in the past 30 years". In view of its outstanding ultra-high strength, it is also known as "the strongest concrete" in the industry. "Ultra-high performance concrete" GB/T 31387 — 2025 opinion draft defines: "ultra-high strength fiber toughened concrete produced with cement and mineral admixtures as cementitious materials, combined with aggregates, admixtures, high-strength micro-steel fibers and/or non-metallic fibers, water and other raw materials".
UHPC ultra-high performance concrete
I. UHPC ultra-high performance
UHPC ultra-high performance, It can be summarized as "three high" characteristics:
ultra-high mechanical properties
, compressive strength, flexural strength and tensile strength can reach several times to more than ten times of ordinary concrete.
Ultra-high durability, very low
porosity, almost no internal cracks, corrosion resistance is far superior to ordinary concrete.
Super high working performance
, no segregation, no bleeding, excellent pumpability, self-compacting and vibration-free, and can also reduce the weight of steel materials and structures.
UHPC is
based on the draft of GB/T 31387 — 2025 of Ultra High Performance Concrete. The basic threshold of the three most important quantitative performance indexes of UHPC:
compressive strength ≥ 100MPa
, tensile strength ≥ 3.5MPa
, impermeability ≤ 2.0 × 10-13 ㎡/s
UHPC can be designed to be lighter and thinner. Structure size, through the interface comparison of different materials under the same load, the ultra-light and ultra-thin effect is clear at a glance:
the interface comparison of different materials under the same load II. The application field
of UHPC UHPC ultra-high performance concrete. At present, it has been widely used in various fields including road and bridge engineering, construction engineering and municipal engineering by giving full play to the excellent performance of one aspect or comprehensive aspect:
building components
, lightweight and high-strength structural or decorative components, such as stairs, balconies, curtain walls and decorative components.
Municipal components
are lightweight and high-strength components of municipal facilities, such as poles, municipal pipe trenches and cover plates.
Structural connection
The structural connection of prefabricated components, such as bridge wet joint connection, prefabricated component node connection, etc.
Bridge deck pavement
is widely used in steel bridge deck pavement to solve the problem of easy damage and cracking. The
maintenance
, reinforcement and protection of the structure greatly improve the strength and rigidity of the structure, and provide multiple protections such as impermeability, waterproofing and wear resistance for the structure.
Durable engineering
is used for projects with harsh environment and vulnerable to erosion, such as marine environment engineering, salt water freeze-thaw environment engineering, etc.
Centennial projects
are used for projects with long design life, such as transportation infrastructure, nuclear energy and nuclear protection projects.
Explosion-proof engineering
is used in various military projects or civil projects with important functions, such as protecting vaults, data centers or other important buildings.
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