What's new in HDGS research?

Based on the aforementioned facts, we are eager to summarize an overview of recent HDGS research from the following three aspects: (1) anticorrosion control of zinc coatings to meet HDGS applications, (2) emerging and state-of-the-art duplex coatings for HDGS, (3) the life evaluation of aforementioned coating systems.

What are the future developments of Coating Systems for HDGS?

The future developments of coating systems for HDGS would affect a number of fields. Firstly, the modifications of the present coating systems would be affected through, for example, the structural modification of silane films and composition optimization of rare-earth conversion films. Also affected would be the discovery of novel coating systems.

What causes corrosion of HDGS reinforcement?

Among the factors leading to the corrosion of HDGS reinforcement, CaCO 3 generated from the neutralization reaction of CO 2 in the air with Ca (OH) 2 in the pore fluid of the concrete and Cl – have the most serious impacts ( Al-Mehthel et al., 2009; Manna, 2009 ).

How to match hot-dip galvanizing process to HDGS?

Figure 1. Proposed corrosion control strategies to match hot-dip galvanizing process to HDGS; key factors include the selection of a suitable matrix steel, the modification of the alloy composition in zinc bath, appropriate temperature and time of hot-dip galvanizing and the design of passivation process.