Research on Mechanical Properties of Modified Recycled Concrete Based on Porosity and pH
In order to explore the influence of ammonium alum and waste coal slag on the performance of recycled concrete prepared by concrete recycled material,ammonium alum and waste cinder were used to replace cement and concrete recycled aggregate to prepare ecological concrete.Combined with indoor uniaxial compression test method,the compressive strength,pH value and porosity of recycled concrete under different replacement rates of ammonium alum and waste coal slag at different curing ages were studied.The test results show that the pH value,porosity and compressive strength of the ecological concrete containing ammonium alum and waste cinder can better meet the actual needs of the project,indicating that the method of using ammonium alum to reduce the pH value of recycled concrete works well.
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