Application Research of High Concentration Waste Slurry in Mixing Plant Concrete Production
The effect of high concentration mixing plant waste slurry on the performance of concrete was re-searched,and the changes in solution pH and density,concrete workability,mechanical properties,and durability after adding different concentrations of waste slurry were investigated.The results showed that as the concentration of waste slurry increased,the alkalinity and density of the solution increased.An increase in the concentration of waste slurry will reduce the slump retention capacity of concrete and accelerate its setting and hardening.When the content of waste slurry is 30％,if its concentration is lower than 20％,the impact on the flexural and compressive strength of concrete is relatively small,and the strength still increases when the concentration of waste slurry is 10％.The overall volume shrinkage rate of concrete mixed with high concentration waste slurry increases,and the higher the concentration,the greater the shrinkage with age.A higher concentration of waste slurry can lead to a decrease in the resistance of con-crete to carbonation and chloride ion erosion.Therefore,when using high concentration waste slurry,attention should be paid to the adverse effects of dosage and concentration on concrete.
high concentration waste slurryworking performancemechanical propertiesdurability per-formancedosage
万方数据
维普
