高性能混凝土在人防工程中的应用

Application of High-Performance Concrete in Civil Air Defense

通过参阅国内外研究文献认为,影响混凝土耐久性的主要因素是钢筋锈蚀,并针对这一因素进行了探讨,详细阐述了钢筋锈蚀机理,以及造成钢筋锈蚀的主要原因,特别是混凝土碳化、氯离子侵蚀等问题,并结合这些问题提出了改善混凝土耐久性的措施.结合某人防工程探讨了将高性能混凝土应用于人防工程中的可行性,并从设计和施工角度提出了具体的实施方案.结果表明,实际工程的干缩裂缝明显减少,结构的抗渗性能大大提高.

Owing to the special functionsofuse requirement of the structure located, it is important to adopt high-performance civil air defense, and the moist environment which concrete,which can satisfy the durability demand. Based on the research literature, the corrosion of steel bars is believed to be the main factor affecting the concrete durability. Aiming at this problem, the corrosion mechanism and the primary reason are elaborated in detail. The research focuses on the concrete carbonization and chloridion eroding, and the measures to improve concrete durability are proposed. Combining one practical project, the feasibility of adopting HPC into civil air defense is dis- cussed, both from design and construction. The results show that the shrinkage crack of the structure has been reduced and the ability resistance improved. So, the HPC can iinprove the durability of civil air defense, and produce good economic benefits.