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Volume 52 Issue 11
Nov.  2022
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Article Navigation >  INDUSTRIAL CONSTRUCTION  > 2022  >  52(11): 207-212
LU Sheng'an, WANG Wei, XIAO Li. Evaluation of Soil Structure Characteristics of Wenzhou Soft Clay and Analysis of Tunnelling Disturbance with Tunnel Boring Machines[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(11): 1-10,20. doi: 10.13204/j.gyjzG23051908
Citation: DING Hong, WANG Pengju, Peng Gaifei, YANG Jing, LI Qiang, ZHANG Zhenxing, WANG Haidi. Preparation and Application of Ordinary-Strength High-Durability Underwater-Anti-Separation Concrete in Marine Environment[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(11): 207-212. doi: 10.13204/j.gyjzG22022812
shu

Preparation and Application of Ordinary-Strength High-Durability Underwater-Anti-Separation Concrete in Marine Environment

doi: 10.13204/j.gyjzG22022812

  • 1. Beijing Construction Engineering Group, Advanced Construction Materials Limited Liability Company, Beijing 100015, China;

  • 2. Beijing Construction Engineering Hengjun Engineering Testing Co., Ltd., Beijing 102615, China;

  • 3. Faculty of Civil Engineering and Architecture, Beijing Jiaotong University, Beijing 100044, China;

  • 4. Inspection and Certification Co., Ltd., MCC, Beijing 100088, China

  • Received Date: 2022-02-28
    Abstract
  • The marine environment is harsh and complex, and coastal buildings are prone to deterioration under the combined action of physical and chemical destruction factors. In this paper, concrete with ordinary strength, high durability and underwater separation resistance was prepared based on the marine environment in Phase I project of Jingtang, Shougang in Caofeidian of Tangshan. The cementitious material system was optimized by adding ground slag and fly ash to improve the strength, compactness and durability of concrete. The mixture of anti-corrosion rust-resistance high-performance water-proof agent and appropriate amount of air entrainment agent improve the corrosion resistance and frost resistance of concrete, and improve the separation resistance of C35F300 underwater concrete. The results showed that the slump of concrete was 210 mm, the gas content was 5.4%, the compressive strength was 50.6 MPa, and the chloride ion erosion coefficient was 2.6×10-12 m2/s, fully met the requirements of C35F300 (300 freeze-thaw cydes and C35 strength grade). Through engineering practice, the working performance, mechanical properties, anti-separation performance and durability of concrete could meet the requirements of concrete of underwater structures.
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