Abstract
Taking advantage of the desulfurization petroleum coke residue obtained from circulating fluidized bed boiler technology to replace a part of cement clinker and prepare the concrete can not only reduce the production of cement clinker and related CO2 emissions, but can also improve the utilization rate and utilization level of petroleum coke waste, which has good environmental and economic benefits. In this study, through the comprehensive analysis of a compressive strength test, X-ray diffraction test, and Cl− penetration resistance test, the hydration mechanism of desulfurized petroleum coke residue in concrete is revealed, and the optimum replacement ratios of single-added petroleum coke residue, multi-added petroleum coke residue, and mineral admixtures in concrete are evaluated and proposed. The results showed that mixing the 10% petroleum coke residue and 40% blast furnace slag would be most appropriate to replace the cement in concrete, thus the effective utilization of mineral admixtures and coke residue in concrete without strength loss could be realized.
Highlights
For the oil refining industry, petroleum coke is the final product of petroleum after delayed coking treatment; the petroleum coke residue is the solid waste produced by the combustion and utilization of petroleum coke [1]
According to the national standard of GB/T50082-2009, the chloride ion penetration coefficient test for concrete was measured through the Rapid Chloride Migration (RCM) Method [15]
Combined with the results of strength, the proposal here is that mixing 10% petroleum coke residue and 40% blast furnace slag would be most appropriate to replace the cement in the concrete, as this will achieve an
Summary
For the oil refining industry, petroleum coke is the final product of petroleum after delayed coking treatment; the petroleum coke residue is the solid waste produced by the combustion and utilization of petroleum coke [1]. The comprehensive application of petroleum coke residue in general project constructions are still rare. China (ten (tenmillion milliontons) tons) coke residue in general project constructions are still rare. Most are used for reclamation, while a coke residue in general project constructions are still rare. Desulfurization petroleum coke residue can provide a lot of calcium materials resource saving and waste recycling. Desulfurization petroleum coke residue can provide a lot of resource saving and waste pozzolanic recycling. Desulfurization petroleum coke residue can provide achieve a lot of and free Ca(OH). Thisadmixtures study, the optimum stimulated to achieve twice hydration andstrength further improve the strength ofin concrete. The obtained results have great importance in using the residue to replace the cement in general project construction. Desulfurization petroleum coke residue to replace the cement in general project construction
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