Conclusion Rebound

8.0 8.0

CONCLUSIO SION

After doing the analysis, this test can be conducted using Schmidt’s hammer

(L-

type). This test is undertaken on the surface of rregular Sample ! "ranite for the sample. nde# $alue obtained is rebound number, % and the a$erage $alue that &e get is '.  *+mm &hich are measured of the degree of hardness of the surface. alue of % can be used to estimate the compressi$e strength of the sample (rregular Sample - "ranite) using the ranklin ormula. /ase from the $alue of unit &eigth,0 is 1 and the a$erage $alue of  23S is that sho& after doing the calculation using this formula is 1. 4pa. or fresh rock rock,, the the 23S 23S is appr appro# o#im imate ately ly e5ua e5uals ls to the the 63S 63S of the the rock rock mater material ial.. The The $alu $aluee compressi$e strength for the all point is different. This is because e$ery point the sample ha$e a different strength. This compressi$e strength is use for define the soil is in &hich type such as as soft rock.

Soft rock is is a term term that that usually usually refers refers to a rock material material &ith a

unia#ial compressi$e strength (63S) or 23S that less than 7 48a. This lo& strength range might be influenced by physical characteristics, such as si9e, saturation, &eathering and mineral mineral content. content. /eside that this compressi$e compressi$e strength of rock can be use for obtained obtained the load that &ill be allo&ed allo&ed for each building building or construction. construction. f the compressi$e compressi$e strength strength is high, so the load that can be obtained might be bigger than lo& compressi$e strength. n other hand compressi$e strength is useful for concrete. f rock that &e use for concrete has a high compressi$e strength so the strength for that concrete also increases.