Effects of Different Content of Phosphorus Slag Composite Concrete: Heat Evolution, Sulphate-Corrosion Resistance and Volume Deformation

Phosphorus slag (PS) and limestone (LS) composite (PLC) were prepared with a mass ratio of 1:1. The effects the content PLC water/binder on mechanical properties, durability dry shrinkage concrete studied via compressive strength, electric flux, sulfate dry/wet cycle method, saturated drainage isothermal calorimeter, adiabatic temperature rise instrument deformation instrument. results show that can greatly reduce concrete. is 55 °C 33 wt.% PLC, 10 lower than control sample. addition in does not affect long-term strength When decreases by 0.1–0.15, increases about 10%, compared group. At age 360 days, chloride permeability L-11 (i.e., was 20%, 0.418) L-22 33%, 0.39) decrease to “very low” grade. loss rate after 150 cycles 18.5% 19%, respectively, which 60% drying reduces 4.7% 9.5%, indicating also shrinkage.