AN ADMIXTURE FOR CONCRETE, PREPARED USING BLACK LIQUOR FROM PULPING PROCESS, AND A METHOD FOR PREPARATION OF THE SAME

摘要

PURPOSE: A method for preparing admixture for concrete produced from black liquid generated during pulp manufacturing is provided to prevent decay by foreign bacteria. CONSTITUTION: A method for preparing admixture for concrete comprises a step of oxidizing black liquid generated during pulp manufacturing with oxidizer. The black liquid is used in 5-95 weight% based on total weight% of the admixture. The oxidizer is selected from ozon(O3), H2O2, penton agent, KMnO4, K2Cr2O7, K2S2O8, electronic beam and radiation.