Study of leaching capacity of Ammonium Chloride solution to Calcium in EDTA titration

In order to control and test the quality of cement stabilized soil, EDTA titration method is widely used to test the cement dosage in highway engineering. Owing to differences between the actual operation and specifications, the cement dosage of cement stabilized soil can't be controlled effectively. The change of leaching capacity of Ammonium Chloride solution to Calcium in cement stabilized soil was studied, getting the influence law and practical solutions were proposed.