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Most of the land in South Sumatera is the problematic soil, one of that is peat. Peat has low soil bearing capacity, and it becomes a problem when construction is built. Before the installation process, it is necessary to handle that soil. Soil improvement that can be done on peat to increase the bearing capacity value is the reinforcement method or physical stabilization. The results of research on woven bamboo and cerucuk are used as reinforcement material, which is expected to be an alternative to improve soil bearing capacity. The research methodology used was on the scale of the laboratory and analyzed by comparing the soil bearing capacity without reinforcement in bearing capacity ratio (BCR). The maximum bearing capacity with cerucuk reinforcement and without woven bamboo is 39.33 kPa with variations of the two outer rods of the left and right sides from 750 angle toward the foundation plane. However, using the 3 layers of reinforcement woven bamboo that is combined with cerucuk, which has diameter 1,5 cm and length 60 cm generates the highest soil bearing capacity value. The maximum of bearing capacity is 58 kPa. The BCR is 10,88 or in percentage is 988,2%, or 10 times greater than bearing capacity without reinforcement. So, it can be inferred that woven bamboo and cerucuk are used as an alternative to improve bearing capacity on peat soil.

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SCC is a high-performance concrete innovation that does not require vibrating equipment at the time of placement and compaction. The purpose of this study is analysis the ratio effect of fiber gain on physical and mechanical properties of SCC. This research uses fiber with fiber variation and content as additional material. The variation of fiber is pineapple leaf fiber and polypropylene with w/c is 0.3. The variation of fiber has length 12 mm with fiber content 0.2%, 0.3% and 0.4% of cement weight. Testing the physical properties or characteristics of SCC conducted in this study was slump flow, V-funnel and L-box. The testing of mechanical properties performed at the ages of 7 and 28 days for compressive and flexural strength. The addition of fiber showed the effect on physical and mechanical properties of SCC. Increasing the fiber content showed an increase in flexural strength accompanied by a decrease in the value of the diameter and time of fresh concrete. Maximum compressive strength was obtained with the use of 0.3% fiber content of 56.28 and 58.04 MPa for pineapple leaf fiber and polypropylene at the ages of 28 days. The 0.4% fiber content provided a maximum flexural strength of 7.76 and 8.16 MPa for pineapple leaf fiber and polypropylene at the ages of 28 days.

No abstract