From the resultant and discussion shown that the specimen 1 (G1) has the modulus of elasticity is 54.156 kg. /cm2 which less than the specimen 2 (G2) that has the modulus of elasticity is 56.05 kg. /cm2. Then, we known that the specimen 2 (G2) is better than the specimen 1 (G1) because the modulus of elasticity. Due to the concrete that has the modulus of elasticity is high. It will made we know the strength and stiffness of itself are high, too.