Towards Eco Green Construction With Pumice Fine Aggregate Concrete

摘要

Concrete production in construction work is one of the causes of damage to the environment. the use of local materials as aggregates in concrete mixes is expected to be more eco green in construction. With the uniqueness of the pumice it is tried to serve as a fine aggregate for concrete mixing with 3 (three) different FAS variations which is 0.4; 0.35 and 0.3. Average compression strength test result of concrete cylinder with Pumice fine aggregate with FAS = 0.4 was = 240 kg/cm~2 and for concrete cylinder with pumice fine aggregate with FAS = 0,35, the average compressive strength was = 305 kg/cm~2 and concrete cylinder with pumice fine aggregate with FAS = 0,3 obtained average compressive strength = 306 kg/cm~2. Furthermore, we tested load on a reinforced concrete beam sample with a pumice fine aggregate. The beam set up with two simply supported and loaded on the 1/3 outer of span. The average load at the initial crack was 19.16 kN and the mean value of the maximum load is 45.33 kN. when it compared to reinforced concrete beam that using normal aggregate with the same concrete mortar composition with pumice fine aggregate beam, obtained results that did not different so much, that is the average load at the initial crack was 23.33 kN and the highest average load was 46.16 kN. Pumice fine aggregate can be used as material for normal concrete mixtures with a small FAS and the use of pumice fine aggregate as a material for concrete will reduce the impact of environmental damage due to construction work activities.