@article{Ahmad B. Malkawi_Maan Habib_Yazan Alzubi_Jamal Aladwan_2020, title={ENGINEERING PROPERTIES OF LIGHTWEIGHT GEOPOLYMER CONCRETE USING PALM OIL CLINKER AGGREGATE}, volume={18}, url={https://geomatejournal.com/geomate/article/view/414}, abstractNote={<p>The palm oil industry generates a significant amount of wastes which their managing has been <br>a major environmental concern in producing countries. The utilization of these wastes as an aggregate source <br>for concrete production will help to sanitize the environment and provides a cheaper and renewable <br>aggregates source for construction industries. This paper presents the results of the experimental program <br>conducted on fly-ash based geopolymer concrete containing Palm Oil Clinker Aggregate (POCA). Several <br>geopolymer concrete mixes were prepared in which POC was used as a replacement to both fine and coarse <br>aggregates at different percentages starting from 25% to 100%. Mix proportioning was done in accordance <br>with ACI 211.1-91. Geopolymer concrete specimens were cast, cured at ambient conditions and tested for the <br>slump, density, water absorption and compressive, shear and flexural strengths. Overall, the use of fly ashbased geopolymer binder and POCA can enhance the sustainability aspects in concrete production as well as <br>produce a high strength concrete. A concrete mixture containing 100% POCA can produce a structural <br>lightweight concrete having a compressive strength of more than 30 MPa and a density of 1821 kg/m3<br>. The use of a geopolymer binder promotes the workability and strength of POCA concrete and reduces its water <br>absorbability. Incorporation of POCA up to 75% did not much change the structural efficiency of the <br>produced concrete, while it was reduced by 32% when the POCA fully replaced the natural aggregate. <br>Nevertheless, the benefits in terms of cost, energy, and environmental savings cannot be overlooked.</p>}, number={65}, journal={GEOMATE Journal}, author={Ahmad B. Malkawi and Maan Habib and Yazan Alzubi and Jamal Aladwan}, year={2020}, month={Jan.}, pages={132–139} }