Mortar curing times increased from 14 to 28d for all groups, corresponding to a decreasing trend in the mass-loss rate, but the data difference between mortar curing times for 21d and 28d groups was smaller.
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Research on fire resistance and economy of basalt fiber insulation mortar.
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The sentences
The compressive strength of each group of mortar showed a trend of increasing and then decreasing with the increase of basalt fiber admixture.