Gas chromatography to detect bacteria-based self-healing agents in concrete

In the concrete industry, legal disputes might occur when a built structure performs worse than it was supposed to during design phase. When dealing with underperformance of self-healing (e.g., no regain water tightness after cracking), these likely be related questioning if healing agents were actually included in material or not. this study, methodology based on Gas chromatography is proposed detect and quantify poly-lactic acid based-healing cementitious materials. The applicability technique for purpose has been demonstrated mortar powders without agents. amount needed conduct experiment less 200 mg, making suitable on-site application limit any destructive action as much possible. gas agent inclusions potential extended other additives, depending their composition.