ANALISA KUAT UJI TEKAN BETON MORTAR MENGGUNAKAN CAMPURAN SERBUK KAYU

Technological developments, especially in the field of building construction, have experienced rapid development in this decade, including concrete technology. Therefore, it is necessary to create a construction material by carrying out useful engineering for the construction which in this study took a substitute material from Surian wood powder. In sawdust there are levels of cellulose and hemicellulose which when added to a mixture of cement and a mixture of sand in the form of concrete, these compounds will be adsorbed on the surface of the mineral/particles and provide a bonding density between particles due to their adhesion and dispersion properties, as well as inhibiting the diffusion of water in the material. sawdust from the cutting of the wood will certainly affect the quality of the concrete from the casting. Therefore, in the development of fibrous concrete, research is often carried out on the use of natural fibers for concrete, one of the fibers that can be used as an additional cost-effective and environmentally friendly concrete mixture is wood fiber. Concrete is a structural element consisting of a mixture of fine aggregate, coarse aggregate, cement and water, where if cement is mixed with water it will be used as an adhesive, and also as a filler for the parts of the aggregate particles. Thus, if the concrete has been cast, it will harden due to the chemical reaction between cement and water which will produce a solid structural material. So based on the explanation above, the researcher concludes that in order to find out what maximum results can be obtained from the use of sawdust in concrete mixtures, research on sawdust is carried out with several mixture substitution variants such as 25%, 50% and 75%. The greater the mixture of sawdust variations, the resulting compressive strength decreases with a variation of 75% the maximum compressive strength that can be endured is 9.79 Mpa at a maximum age of 28 days and the greatest compressive strength is in the wood sawdust variant as much as 25%, which is 19.07 Mpa at age. maximum 28 days. So that the difference in compressive strength produced by the variation of sawdust against normal concrete is 5-13 MPa.

Keywords : Concrete, Sawdust and Mixture , Sukabumi 2022.