CD Skripsi
Pembuatan Cellular Lightweight Concrete (Clc) Dengan Penambahan Fly Ash Dan Graphene
ABCTRACT
Future deforestation and forest degradation are at high risk, especially in tropical countries. One of the efforts to maintain water balance in peatlands that is being promoted by the Government is the creation of canal partitions to prevent water from flowing rapidly downstream. This research made Cellular Lightweight Concrete (CLC) as a canal bulkhead which is a lightweight brick where pore formation is carried out mechanically through the addition of foaming agents mixed with some water. CLC is made with the addition of fly ash and graphene to reduce the density of concrete and also as an effort to minimize and utilize fly ash waste and use graphene to maintain the quality and strength of concrete In making CLC with the addition of fly ash and graphene, the best influence and variation of graphene addition and sand size gradation will be seen. The manufacture of CLC begins with the preparation and preparation of raw materials in the form of sand, Portland cement, water, fly ash, and graphene, then the foaming liquid is made by dissolving the foaming agent using water with a ratio (foaming agent: water) 1: 20, after that the foaming liquid is connected to the foam generator to produce the desired foam, then a homogeneous mixing process of raw materials is carried out. The results of the SEM analysis show that the higher the addition of graphene and the lower the gradation number of sand size (mesh units) can reduce porosity and increase solids from CLC. Testing the mechanical properties of CLC showed that the highest compressive strength was 5.19 MPa obtained from a variation in the amount of graphene 15% and without a gradation of sand size. The results of the acid endurance test also showed that the addition of graphene 15% and without gradation of sand size had the highest acid resistance at soaking for 30 days in peat water with pH levels of 3, 5 and 7 obtained results of the compressive strength test successively 4.79 MPa, 4.9 MPa, and 5.06 MPa.
Keywords : canal bulkhead, celluler lightweight concrete, compressive strength, fly ash, graphene
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