Concrete, due to its high compressive strength, good fire-resistance, easy casting and cost-efficiency, has become the most widely used construction material in the world. However, if taking into account the cost for the later maintenance and the repair of often unavoidable damage, the sustainable development of concrete appears to be a challenge. An alternative to the traditional strategy of damage prevention and repair is the management of damage in a proper way. A promising solution for damage management is self-healing, that is, to make the cracks in concrete heal upon occurrence. The distinct benefit of self-healing is that, if the microcracks could be healed from the initial stage, their further growth into large dangerous cracks could be avoided. Therefore, there would be no or less repair work needed during the subsequent service time, and hence, the cost for repair would be greatly decreased. Among various self-healing methodologies, a most promising strategy is bacteria-based self-healing strategy, which has the distinct features of environmental friendliness, long-term viability and low cost.
Jianyun Wang, PhD, Professor/Doctoral supervisor of Department of Civil Engineering, Faculty of Human Settlements and Civil Engineering. She was granted “Outstanding Youth Talent Funding A” in Xi’an Jiaotong University in 2018. She is an active member of International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM); Scientific member of Self-healing Materials and Technology Committee of China Concrete & Cement-based Products Association. Her main research field is Bacteria-based self-healing concrete, Bio-enhanced recycled aggregates and concrete, Surface protection and consolidation of building materials, Bio-cement, etc. She has undertaken 3 projects from the Research Foundation Flanders of Belgium (FWO), Natural Science Youth Foundation of China (NSFC) and Natural Science Foundation of Shanxi Province, respectively. She has published 25 SCI papers, which have been cited more than 700 times.