Optimal Design of Bituminous Improvement Residue in Roofing and Building Applications

Abstract

This work was based on the fact that a lot of waste-environmental pollution’s-can be re-used by fabrication in different economical techniques in addition to save the environment from their aggressive effects. The wastes of polyethylene (Pepsi bottles) and black emulation waste(bwb) for petroleum (bitumen) from local street and Iraqi refineries were used in this work to prepare a matrix materials (bwb/As/PE, bwb /Sc/PE)that will suitably used as water proofing lining and wall insulation. Different weight ratios of waste polymer (polyethylene) as(10,20,30.40,50) wt% bwb is used to improve phsiyco chemco-properties and different reinforcement local cheap ceramic materials such as asbestos fiber (As) (5, 10, 15,20,25) vol% and silicon carbide (Sc )(5,10,15,20,25) wt% to improve thermo-mechanical properties of black waste bitumen (bwb). Their effects on both phsiyco-chemco and thermo-mechanical properties (chemical resistance, thermal stability, TG analysis, tensile strength) of both matrices systems (bwb/As/PE, and bwb/Sc/PE) produced achieved optimum mixing ratiowhich gives best properties with less internal stresses had been showed. The result of testing shows that an optimum mixing ratio for sample (3) from both matrices systems (bwb/AsiPE and bwb/Sc/PE) and with excellent pysiyco-chemco and thermo-mechanical properties for system bwb/As/PE system Aging for 7 days,50 °C in different chemical solutions (100% H₂O, 5% NaOH, and 5% H₂SO₄), The results of TG test are: an excellent thermal stability and less loss in weight is for sample (3) reinforced by asbestos fiber where its loss only 5% of original weight at 500 °C compared to sample 3 reinforced by silicon carbide, which its loss 20% of original weight at the same temperature, The thermal conductivity for both samples reinforced by asbestos fiber and silicon carbide decreased with increasing reinforcement agent (asbestos, and silicon carbide ) with excellent results for asbestos sample at 0.009 w/m _oC than other one of 0.5  w/m °C. For silicon carbide The mechanical properties tensile load resistance for asbestos sample (3) after aging it in different chemical solutions (100% H₂O,  5% NaOH, and 5%H₂SO₄) for 7 days at 50 °C with rang 100-200 dyne/cm compared to that of silicon carbide sample (3) for range 60-78 dyne/cm respectively.