Study on Experimental and Mechanism of Basalt Fiber Concrete Erosion in Sulfuric Acid Environment

In order to study the influence of basalt fiber on properties of concrete, the concrete test block (100mm) containing 0%, 0.05%, 0.1%, 0.2%, 0.3% basalt fiber, was respectively put in sulphuric acid solution of PH=3 for immersion corrosion test. The corrosion development of concrete test blocks with different amount of basalt fibers were followed up and observed, and the variation law of porosity and compressive strength of concrete in different corrosion environments were analyzed. The results of the tests indicate: The acid corrosion resistance and compressive strength of the concrete with 0.1% fiber added in this experiment have been greatly improved. And the basalt fiber can only play its role when the appropriate amount of the fiber was added. In addition, the acid corrosion resistance and compressive strength of concrete specimens with 0.3% content of basalt fiber were not greatly improved or even decreased. This paper would provide some technical support for the engineering application of basalt fibers. (paper)