Research on Properties of Coastal Natural Spherical Aggregate Concrete

Our country has a long coastline and there are a lot of natural pebbles in coastal region. Applying natural pebbles in concrete is of great engineering significance and prospect. To measure the performance of coastal natural pebbles concrete and study the effect of aggregate on concrete properties, this article put forward a new comparison condition the same slump constant and cement dosage based on properties of coastal natural pebbles concrete and crushed stone concrete. Prepare different strength concrete under this condition. The compressive strength of pebble concrete is 100.5%-110.7% times of stone concrete. The bending strength and fatigue strength are 97.8%-108.1%, 135.8%-176.6% respectively. This explains good static and fatigue properties of coastal natural pebbles. Pebble concrete has significant fatigue strength advantages in cement concrete pavement and concrete member under dynamic loading.