Research on The Mechanical and Anti-cracking Properties of Cement-Desulfurization Residue Stabilized Crushed-Stones

By measuring the 7d, 28d compressive strength of the cement-desulfurization residue stabilized crushed-stones with different desulfirrization residue contents, the reasonable content of desulfurizaton residue has been determined. The 28d splitting strength, 28d compressive resilient modulus and dry shrinkage properties of cement-desulfurization residue stabilized crushed-stones were studied. Results show that the reasonable desulfurization residue content of the cement-desulfurization residue stabilized crushed-stones is 5% (by mass), compared to the cement stabilized crushed-stones and cement-fly ash stabilized crushed-stones, its 28d splitting strength increases by 25% and 5%, 28d compressive resilient modulus decreases by 19% and 1% and dry shrinkage strain is the smallest. In addition, the enhancement of strength and anti-cracking mechanism of desulfurization residue on pavement base are discussed.