Strength of glass powder based high performance concrete during the time

Abstract

Recycling waste glass and protection of the environment with decreasing of the cement use in building are the main context of this research work. The influence of waste Glass Powder very rich in silica SiO2 as partial replacement of Algerian cement without additions based High Performance Concretes with superplasticizers is evaluated, varying the percentage of Glass Powder by 0%, 10% and 20% (by weight of cement). Compression and the three-point bending tests carried out on High Performance Concretes by fixing the water binder ratio and after water cement ratio at 0.35, the results show that the addition of Glass Powder improves the behaviour of the concrete material compared to the handling and the ease of implementation in an appreciable way. The study shows also that compressive and flexural strengths are significantly influenced by the substitution rate of Glass Powder, a drop is noticed at a young age for concrete with Glass Powder (7 and 28days) and strength gains at 90 and 365 days compared to the control concrete with 0%, this admitted that poozolanic and alkali silica reactions occurred from 28 days.