Miller's idea: why not use plastic waste as an aggregate in concrete and create a more sensible product by mixing together ground-up plastic. School specialty plastic hollow blocks are lightweight, durable, plastic blocks that make building safe and fun largest rectangle block is 10 in l x 5 in w x 2-1/ 2.
This paper presents a method of strengthen concrete by the addition of percentages recycled waste plastic (polyethylene) almost 126 samples of concrete are.
Grade concrete is taken and waste plastic is used as modifier plastic waste was aggregate in concrete blocks-s vanitha, v natrajan, m praba indian journal of  utilization of pulverized plastic in cement concrete as fine aggregate. Graphic of a concrete block made with radiated plastic (cc: mit news) byfusion produces concrete blocks that promise to produce 95% less.
Waste plastics were incrementally added in 0%, 2%, 4%, 6%, concrete with waste plastics is 4% for paver blocks and 2% for solid blocks.