RESEARCH ON UPGRADING TECHNOLOGIES OF MODERN CONCRETE’S DURABILITY

Author(s): Miao Changwen, Hong Jingxiang, Mu Song
Paper category: Proceedings
Book title: Proceedings of CONSEC13 Seventh International Conference on Concrete under Severe Conditions - Environment and Loading Volume I
Editor(s): Z.J. Li, W. Sun, C.W. Miao, K.Sakai, O.E. Gjørv, N.Banthia
ISBN: 978-2-35158-124-7
e-ISBN: 978-2-35158-134-6
Publisher: RILEM Publications SARL
Publication year: 2013
Pages: 24-35
Total Pages: 961
Language : English

Abstract: High Performance Concrete (HPC) shows good workability and mechanical properties. However, low water to binder ratio and high addition of mineral admixture, could lead to a reduced durability of HPC under certain circumstances. Therefore, research on the improvement of HPC durability is of great significance. Considering the typical durability problems of HPC, this paper demonstrates several key technologies, such as microstructure design, crack control, surface treatment and corrosion inhibitor, to ensure a long-term performance of HPC. Pore structure optimization due to application of the surface curing agent can improve the frost resistance of HPC. Besides, the accelerated deterioration of crack is addressed and mitigation strategies are proposed for reducing shrinkage and cracking of HPC. Finally, surface treatment and corrosion inhibitor significantly improve resistance of reinforcement corrosion. All these technologies can improve the durability of HPC, and thus ensure 100 years of service life design for major projects under severe environmental condition.

Online publication : 2013
Publication type : full_text
Public price (Euros) : 0.00