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In this study, the raw material for the empty bucket wall consists of Dalun bricks unique to South Zhejiang. The investigation focuses on the changes in compressive properties of the empty bucket wall with masonry mortar strength grades of M 2.5, M 5.0, M 7.5, and M 10.0 after a designated period of maintenance in both dry and wet environments. Following this, the empty bucket wall undergoes reinforcement, and the compressive properties are studied. The ensuing comparisons yield pertinent conclusions. Unreinforced walls maintained with varying mortar strengths in a wet environment exhibit reduced cracking loads by 5.8 to 30% and damage loads by 5.6 to 10.8% compared to their counterparts in a dry environment. Reinforced walls, maintained with different mortar strengths in wet environments, show reduced cracking loads by 6.2% to 36% and damage loads by 2.5% to 5.7% compared to those in dry environments. The stress–strain curves of unreinforced and reinforced barrel walls of various strength classes are obtained by fitting the test stress–strain data to the stress–strain data derived from corresponding model equations. These stress–strain curves for unreinforced and reinforced walls align well with the model curves, affirming the precision of the tests. [ABSTRACT FROM AUTHOR]

Nano (Fe)MIL‐101 particles were grafted on the short carbon fibers (SCFs) by in situ growth method to prepare (Fe)MIL‐101@SCFs. The flame‐retarded composites of epoxy resin (EP) were fabricated with combination of (Fe)MIL‐101@SCFs and ammonium polyphosphate (APP). The composites showed good flame retardancy, smoke suppression, and mechanical properties simultaneously. The main heat release rate peak of the flame‐retarded composites was reduced and delayed evidently in comparison with pristine EP. The high amount of residual char with coherent and dense structure was formed owing to the catalytic char formation of (Fe)MIL‐101 as well as the strengthening action of SCF. The improvement in mechanical properties of the flame‐retarded composite was due to the reinforcement effects of (Fe)MIL‐101@SCFs and its action of interfacial adjustment. This research solved the contradiction between the flame retardancy and mechanical properties of EP, and proposed a new method to prepare the mechanically reinforced and flame retardant EP. [ABSTRACT FROM AUTHOR]