Noise is one of the most important environment pollutants, especially in our modern everyday life. Concrete panels can be used as sound barriers to eliminate or, at least, to reduce the noise pollution. Conventional concrete is produced using ordinary Portland cement (OPC) as a binder, a highly energy intensive product which releases carbon dioxide (CO2) during hydration. Therefore, conventional concrete cannot be considered sustainable, as far as energy consumption and greenhouse gases emissions are concerned. In this work, due to its high mechanical performance and environmental advantages, we used a nanostructured geopolymeric binder as an alternative to OPC. Geopolymeric binders offer a significantly lower CO2 footprint compared with that associated with the production of OPC. Besides it, we used waste rubber (WR) in preparation of noise barriers to combat the existing problems of both waste disposal and noise pollution, simultaneously. Hereby, a new concrete was developed based on metakaolin-geopolymer incorporating WR, targeted as base for designing and construction of noise screens. For producing high strength geopolymer concrete, the optimum molar ratios of SiO2/Al2O3, Na2O/SiO2 and H2O/Na2O were adjusted as 3.7, 0.22 and 18, respectively, at an NaOH concentration of 15 M. SEM micrographs showed a homogeneous nanostructure for corresponding metakaolin-geopolymer. Crumbed WR was used to replace total aggregate at ratios of 2, 6, 10 and 14 wt%. The results indicated that waste rubber geopolymer concrete exhibited higher sound transmission loss, better sound absorption property and noise reduction coefficient compared to conventional concrete.