<![CDATA[As time progresses, concrete has undergone innovations to address existing challenges. Onesuch innovation is Self-Compacting Concrete (SCC), which incorporates superplasticizeradditives, enabling the concrete to flow and achieve relatively high compressive strength. Theaim of this study is to analyze the effect of the water-cement ratio (WCR) on the workabilityof self-compacting concrete and its influence on compressive strength. A quantitative methodwith an experimental approach was conducted in a laboratory, utilizing zeolite activated with1M NaOH at varying FAS levels from 0.29 to 0.37. Fresh concrete tests, including v-funnel,slump flow, and l-box, were performed following SNI 7656-2012 standards. The compressivestrength test results for WCR variations of 0.29, 0.31, 0.33, 0.35, and 0.37 were 42.71 MPa,41.58 MPa, 40.82 MPa, 40.35 MPa, and 40.26 MPa, respectively. An increase in the WCRvalue from 0.29 to 0.37 resulted in a gradual decrease in compressive strength due to areduction in materials such as cement, zeolite, and superplasticizer, alongside an increase inwater content. This condition enhances the porosity of the concrete, leading to lower densityand compressive strength. Concrete with a low WCR has smaller and denser pores,optimizing the pozzolanic reaction between zeolite and cement, thereby improving thestructural strength of the concrete. These findings align with previous research. Inconclusion, the results demonstrate that a lower WCR corresponds to higher compressivestrength, while concrete with a higher WCR exhibits good self-compacting concretecharacteristics.]]>
