The paper presents experimental data referring to the influence of E glass wastes as aggregate substitute on the properties of concrete. Industrial E glass waste was ground up to a content of 64% particles smaller than 0.5 mm. It was studied the expansion evolution due to the aggregate alkali reaction ASR, of the reference mortar and of those with E glass or with packing glass waste, particles under 0.5mm, up to 12 month, using the mortar bars method. The mortar bar expansion was of 0.24 mm/m, for E waste addition, 0.56 mm/m for packing glass addition and 0.42 mm/m for the control bars. The alkali content (Na2O + K2O) of E glass was 0.6% and 14.5% of packing glass, was a favorable premise of alkali-silica reaction decreasing. The compressive strength of samples with 33% E glass was 21, 26 and 30% higher than that of the control sample at the age of 28, 90 and 360 days. The bending strengths also were higher than those of the control sample with 3, 8 and 10% at the same ages. The concrete shrinkage was 1.54 mm/m at 360 days age. The mechanical strength increase can be justified by the pozzolanic character of the fine glass particles. The concrete workability decreases at the increase of the amount of glass due to fibrous shape and to the great quantity of fine particles, therefore the use of a high-range water reducers admixture was necessary. Based on the obtained results one may affirms that 0.5mm particle size fine aggregate substituting by E glass is beneficial to concrete compressive and bending strengths.
