After F50, the strength of all five groups of specimens shows a decreasing trend.
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Development of High-Performance Composite Cementitious Materials for Offshore Engineering Applications.
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From Figure 20 , it can be seen that at F25, the compressive strength of PCE-S8 and PCE-W8 composite cementitious mortars both show an increasing trend, indicating that the cementitious mortars with a larger amount of mineral admixtures continue to undergo further hydration reactions after 28 days of curing, thereby increasing the mechanical strength.