A reduction in the mechanical resistance according to the increase in percentage of PBW, which remains always close to the mortar of reference, when we recorded a fall of compressive strength at 28 days about 18 and 23 % for the mortars containing 10 and 20 % of waste respectively.
The loss of weight for the mortars preserved in the sulfuric acid, decreases according to the increase in the percentage of waste. What indicates the good behavior of these mortars in this medium.
The incorporation of PBW in the mortar slows down the penetration of ions chloride.
Plastic waste improves the sensitivity to cracking of the mortar when it is subjected to the prevented withdrawal. The cracking of withdrawal appears in the form of a network of cracks shorter, not very open. In all the cases when resistance to the imposed deformations is a priority, this property is an asset for the durability of the structures.
The mortars containing plastic waste, have a good behavior when it is subjected to the temperature effect, it preserved their initial states after thermal treatment at 125 °C.
Finally, PBW aggregates can be used successfully to replace conventional aggregates in mortar and concrete without any long term detrimental effects and with acceptable strength development properties.
Acknowledgments
This study was supported by the National Agency for Development and Research of Algeria.
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