An urban heat island is a metropolitan area which is significantly warmer than its surrounding regions. The main reason of the urban heat island is modification of the land surface by urban development. Due to urban heat island phenomena, the energy cost increases and environment for human beings becomes discomfort. Recently, technologies have been explored to alleviate urban heat island phenomena by replacing the existing asphalt pavements with "environmentally-friendly pavements". Porous pavement, water-retentive or water absorbing pavements and interlocking blocks may be helpful to reduce pavement temperature by inducing evaporation. In this study, we aimed at the development of new permeable and water absorbing pavement blocks. The mechanical properties of the bottom ash block , strength, water absorption and water quality purification are studied. In results, further information of the new blocks would allow proposing this composite as new building materials