| Title |
An Experimental Study on the Mixing Design of the Concrete Using the Mixed Fine Aggregate of the River and Crushed Sand |
| Abstract |
This study is aimed for presenting the reference data in efficiency mixing design of concrete using the mixed fine aggregate of the river and crushed sand, through trial mixing, and is aimed to analysing the mechanical properties, drying shrinkage in hardened state. By the test results, for concrete mixing properties using fine aggregate of the crushed sand replacement ratio of 20% and 40% compare with river sand, the water content shall be increased 1~2kg/m3 and the sand-aggregate ratio shall be increaed 0.5~1%. And, in mechanical properties of the concrete the compressive strength of the concrete contained crushed sand compare with river sand is lower, tensile strength is higher, and bending strength is similar. Drying shrinkage is increased while the replacement ratio of crushed sand is increasing because effects of unit water content and powder. |