@thesis{thesis,
		author={Assadzid Roimatuzzuhri  Assadzid},
		title ={ANALYSIS OF VARIATION OF CEMENT WATER FACTORS FOR COMPRESSION STRENGTH OF NORMAL CONCRETE USING KADEMANGAN GUDO EXCELLENT SAND FOR CONCRETE QUALITY FC' 18.68 MPA},
		year={2022},
		url={http://repository.undar.ac.id/id/eprint/2468/},
		abstract={Concrete is usually used for construction work, therefore it is necessary to explore areas for taking appropriate and suitable materials. In the Gudo area, there are sources of fine aggregate or sand that are often used in construction, one of which is in the Kademangan area, Gudo, Kec. Gudo, Jombang Regency, East Java. In general, the majority of the local community when carrying out a residential construction plan often take sand from the excavation. The research method used is an experimental study in the laboratory. In this study, there were 3 (three) variations of FAS. The test object for each percentage variation is 5. The compressive strength test of concrete is carried out when the concrete reaches the age of 28 days. The mud content is 7%, the organic content is at number 3. testing the analysis of the incoming filter for zone number 1, namely coarse sand with a fineness modulus of 4.33. The density of sand is 2.7 grams, the average volume weight is 1.7 grams/cm3 Concrete with FAS 0.4 has an average compressive strength of 18.82 Mpa; FAS 0.5 obtained an average compressive strength of 18.62 Mpa; FAS 0.6 obtained an average compressive strength of 18.69 Mpa. It is necessary to do more research and testing for a more varied age of concrete, with more varied added materials. It is necessary to conduct further research on the use of other materials in concrete mixtures. The need to use tools that are in accordance with existing procedures.
Keywords: phase variation, gudo excavated sand, compressive strength of concrete}
		}