Evaluasi Kekuatan ConcBlock Dengan Agregat Halus dan Agregat Kasar dari Tempurung Kelapa

The growing age of the utilization of production can be processed into an environmentally friendly material. It's Rotary to save costs for doing construction activities. Therefore, using fuel for mixed materials, you can reduce the cost and also can produce as an environmentally-friendly road pavement can also absorb air into the soil, so that road pavement is not easily damaged.The purpose of this research is to know the result of concrete from fine aggregate and a coarse aggregate of coconut shell. The object used is the size of a cube with size 15x15x15 cm of 20 samples, consisting of 5 samples for variation. A sample of betonuks at 28 days concrete age.The results of concrete compressive strength and absorption of concrete using a mixture of fine aggregate and aggregate at 28 days for each variable are:Variation 0% obtained compressive strength equal to 18,5 Mpa and absorption power of concrete equal to 13,60%.Variations of 20% coconut shell and 15% of shell powder obtained strong pressure of 11.4 MPa and absorption of 11.69%.Variation of 25% coconut shell and 20% of shell powder obtained strong pressure of 7.6 MPa and absorption of 11.64%.Variations of 30% coconut shell and 25% shell powder obtained strong pressure of 6.7 Mpa and absorption of 10.17% concrete.From these results, it can be concluded that the concrete used is a mixture and a coarse aggregate of coconut shell and kerosene.Keywords: Compressive strength of concrete, absorption, aggregate mix, shell coconut, shell powder, concblock