PENGARUH BOTTOM ASH SEBAGAI PENGGANTI PASIR DANLIMBAH KARBIT SEBAGAI BAHAN TAMBAH SEMENTERHADAP BERAT JENIS, KUAT TEKAN, DAN ABSORBSIBATAKONur Ali1, Rofikatul Karimah2 , H. E.Meiyanto31,2,3 Jurusan Teknik Sipil Fakultas Teknik – Universitas Muhammadiyah MalangAlamat korespondensi : Jalan Raya Tlogomas 246 Malang 65144Email: rofikatulkarimah@gmail.comABSTRACTBasically concrete brick is formed from cement, sand and water, than a breakthroughmade in manufacturing of concrete brick with the utilization of wastes which have no economicvalue are also widely available in the environment than is waste of bottom ash an carbide. In thisresearch, a normal concrete brick consist of cement, san, and water which given variation ofcarbide waste ranging from 10%, 20%, and 30%, afterwards a replacement of sand by bottomash is made with a given variation of carbide waste 10%, 20%, and 30%. Result of the researchthat applying sand as subtle aggregate and waste of carbide as additional material for cementgets the best result on the variation of carbide waste 30% with strength of compression 69,10MPa and 3,58% absorption capacity, it is better rather than normal concrete brick on the variationof carbide waste 0% with compressive strength of 48,74 MPa and 5,49 absorption capacity.After wards, by doing replacement of sand with bottom ash as subtle aggregate and addedwaste carbideas its variations is obtained the best results in the variation of carbide waste 30%with compressive strength 52,37 MPa and 6,92 of absorption capacity better rather than 0% ofvariation carbide waste with strength of compession 19,64 MPa and 12,01 of absorption capacity.Keyword: Concrete Brick, bottom ash, waste carbide.

From year to year the Portland cement ( PC ) are known to have the price up and down. The Portland cement ( PC ) is used as a filler for asphalt mix is very limited , so it sought an alternative to the use of filler . The existence of abundant ash bagasse in sugar mills Indonesia is still not utilized properly . For now bagasse ash in Indonesian factories only used as fertilizer for sugarcane . This study aims to investigate the performance of hot mix asphalt ( HOT MIX ) LATASIR type - B ( HRSS - B ) with bagasse ash as filler material substitution using a variation of the collision. Specimens are made comprised of three major groups , namely : the test specimen using cement and bitumen of penetration 80/100 ( PC ) , the test object using bagasse ash and bitumen of penetration 80/100 with ( U.S. ) and the test object using the ash residue cane with a variation of the collision and penetration bitumen 80/100 with ( U.S. ) . Total specimen made amounted to 45 , for each type of mixture made 15 test specimens . For ( PC ) Levels of asphalt used is at 6.90% , 7.90% , 8.90 % , 9.90 % , and 10.90 % . Specifications are used to follow the standard Ministry of Settlements and Regional Infrastructure in 2001 using the Marshall method. Filler levels for each of the mixtures was 8.13% and 7.40% OBC generated . For ( AT ) levels fiiler used is 5.00 % , 10.00 % , 15.00 % , 20.00 % , and 25.00 % OBC for each - each mixture was 7.40% and the resulting levels of filler optimum bagasse ash of 7.10 % . Characteristic strength of the mixture based on the value of the stability conditions of the OBC and optimum filler levels . Carrying capacity of filler cement ( PC ) in a mixture of filler OBC 7.40% 8.13% yield and stability of the value of 720 kg , the carrying capacity of bagasse ash ( AT ) in a mixture of 7.40% OBC and filler 7.10% yield stability values 823.35 kg , while carrying a mixed impact on OBC 45 7.40% 7.10 % filler and produce value stability 840.66 kg.

A protection and an improvement of shore is essentially if the shorelines setback cause of thesurf hiting and moreever at the beach areas there are settlements or an important buildings. Theplans of the shore protection building is consist of several parameters, including: wind, fetch andwave. The shore protection buildings be able to protect the coast from the blow of the waves andit’s should also be able to withstand the loads around the building. As for the planned the materialprotective buildings are use stone, which is called revetment. The dimensions of the planned revetmentare : a top elevation + 4.00 m, width 1.5 m with two layers of protection and toe protection. Twoprotective layers are the primar layers and secondar layers, the primer thick layers is 1.0 meters andthe secondar thick layers is 0.5 meters, the primar protective stone weight is 0.18 tonnes and 0.018tonnes for secondar.Keyword : The shore protection buildings