Development and Performance Study of Ultra-High Performance Concrete with Rapid Setting Characteristics

SONG Shanglin; YANG Xiaosen; WANG Haipeng; GUO Weiqiang

doi:10.3724/j.gyjzG24111906

Volume 56 Issue 6

Jun. 2026

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SONG Shanglin, YANG Xiaosen, WANG Haipeng, GUO Weiqiang. Development and Performance Study of Ultra-High Performance Concrete with Rapid Setting Characteristics[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(6): 247-255. doi: 10.3724/j.gyjzG24111906

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SONG Shanglin, YANG Xiaosen, WANG Haipeng, GUO Weiqiang. Development and Performance Study of Ultra-High Performance Concrete with Rapid Setting Characteristics[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(6): 247-255. doi: 10.3724/j.gyjzG24111906

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Development and Performance Study of Ultra-High Performance Concrete with Rapid Setting Characteristics

doi: 10.3724/j.gyjzG24111906

1. Scientific Observation and Research Base of Transport Industry of Long Term Performance of Highway Infrastructure in Northwest Cold and Arid Regions (Gansu Provincial Highway Development Group Co., Ltd.,), Lanzhou 730070, China;
2. Key Laboratory of Civil Engineering Safety and Durability, Ministry of Education, Tsinghua University, Beijing 100084, China

Received Date: 2024-11-19
Available Online: 2026-07-06

Abstract

Abstract

To address the issue of slow hydration and prolonged setting time in ultra-high performance concrete （UHPC），which often lead to extended construction schedules， increased curing costs， and insufficient early-age strength， this study investigated the effects of incorporating accelerators （AC）， binary blends with sulfoaluminate cement （SAC）， substituting sintered bauxite （CB） aggregates， and combinations of these three materials （external-binary， external-substitution， binary-substitution， and external-binary-substitution） on the flowability， setting time， and mechanical properties of UHPC. The results indicated that incorporating 5% SAC and substituting 400 kg/m³ CB aggregates achieved controlled setting time， good workability， and excellent mechanical properties in UHPC. The initial and final setting times decreased to 59 min and 80 min， respectively， the expansion degree decreased by 39.3%， and the compressive strength increased significantly at 1， 7， and 28 days， with a maximum growth rate of 20%. The flexural strength did not increase significantly. However， excessive SAC content （≥5%） significantly increased the risk of autogenous shrinkage and cracking in UHPC and decreased its 28-day impact resistance. This rapid-setting UHPC is suitable for construction scenarios with stringent requirements on setting time， such as rapid repair and reinforcement， enhanced production efficiency of prefabricated components， and emergency engineering repairs in disaster situations.
- rapid-setting characteristics,
- UHPC,
- controllable setting time,
- good workability,
- excellent mechanical properties

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References(26)

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