International Science Community Association Research Journal of Engineering Sciences 2278-9472 9 2 2020 05 26 Slowing down the degradation of concrete by urea: use of glass powder 13 18 EN Asgarzade Hadi 1 Iran, Tehran, Tehran University, Iran Memarian Arman 2 Iran, Zanjan, Zanjan University, Iran KOUAKOU Conand Honoré 1 Laboratoire de Géomatériaux, Unité de formation et de Recherche des Science de la Terre, Université Félix Houphouët Boigny 22 BP 582 Abidjan KOUADIO Koffi Clément 2 Laboratoire de Géomatériaux, Unité de formation et de Recherche des Science de la Terre, Université Félix Houphouët Boigny 22 BP 582 Abidjan SERIFOU Maméry 3 Laboratoire de Géomatériaux, Unité de formation et de Recherche des Science de la Terre, Université Félix Houphouët Boigny 22 BP 582 Abidjan EMERUWA Edjikeme 4 Laboratoire de Géomatériaux, Unité de formation et de Recherche des Science de la Terre, Université Félix Houphouët Boigny 22 BP 582 Abidjan > Research Paper 2020 1 31 2020 05 26 Some concrete structures can be subjected to aggressive environmental conditions and degrade early. To cancel or reduce this degradation, physical and chemical solutions are proposed. This work is a contribution to limiting the degradation of concrete by using waste such as used bottles. Its objective is to slow the progression of concrete deterioration by adding glass powder obtained by grinding used bottles. A finely ground glass powder was added to concrete in varying proportions and then specimens were made. After maturing for 28 days in water, these specimens were immersed in urea solution for four weeks. Each week, some specimens are removed and subjected to various tests (sclerometric index, ultrasonic test, compression test, mass loss and density). Analysis of the results indicates that adding glass powder to concrete increases surface hardness, reduces the amount of vacuum and increases compressive strength. All these improvements are due to secondary CSH training. Comparison of digestion rates from glass-free concrete to glass-powdered concrete shows that the latter is resistant to urea degradation. The addition of powder to concrete is therefore a way of improving the durability of structures in the face of certain chemical degradation agents. Copyright@ International Science Community Association