Pengaruh penambahan serat sabut kelapa konsentrasi 1,5 persen dan panjang serat 4 cm terhadap mutu genteng beton serat pada 5 variasi dimensi

SALEH, Muhammad Yahya, Ir. Sudarmoko, M.Sc

2008 | Tesis | S2 Teknik Sipil

Roof is one of basic structural part in a building. There area some types of roof-closing material, including zinc/metal, cement asbestos, burnt soil roof, concrete roof, and wooden roof. Development of metal roof material grows rapidly and varies type of variation, but from price side it is relatively expensive other than concrete roof one. Using concrete roof has a reason because it is cheap and affordable. It just need a few of maintenance. It is easily formed as need of construction, capable of receiving heavy load, resistant to high temperature and inflammable and resistant to corrosive. This fibrous concrete roof tile was made by adding coconut fiber with 1.5% in concentration of volume and 4 em in fibrous length. This fibrous concrete roof tile was made of 5 (five) length variation of roof, namely 42, 46, 50, 54 and 58 em and had 33 em in fixed width. Testing used covered fibrous weight specific and tensile of coconut fiber, fibrous concrete roof bending test, water absorption and permeability test for fibrous concrete roof after material test aged 28 days. Result of the study indicated that by adding the fiber with 0.5 f.a.s of 75% distribution rate and average absorption 10,21%, permeability due to extending porous volume of concrete roof, concrete roof bending moment increased from variation I to variation V successively with increasing percentage of 32,46%, 24,07%, 25,69%, 24,62% and 16,31%. Average bending moment of variation I, II, III, IV and V were 118, 19; 97,31; 79,99; 72,09 and 59,87 Kg respectively, so that for variation I, TI, and UJ they met bending requirement in quality level TI suitable to SII 0447-81. Concrete roof weight by adding fiber decreased 4% to 8%.

Kata Kunci : Atap beton berserat,Sabut kelapa,Absorption,Permeability