Fig. 5
From: Uniaxial compressive strength of cemented coal gangue backfill based on response surface methodology

Effect of X1 X 2 interaction on 1-day-old, 28-day-old uniaxial compressive strength.
From: Uniaxial compressive strength of cemented coal gangue backfill based on response surface methodology

Effect of X1 X 2 interaction on 1-day-old, 28-day-old uniaxial compressive strength.