Abstract: To explore the compressive performance of nonwater reaction polymers under overlying load, uniaxial compressive strength test is conducted. The destruction characteristics and strength of polymer with different densities are discussed, and stressstrain curves of the material during compression are obtained. Acoustic emission is used to further investigate the failure of polymers′ internal characteristics, with curves of cumulative acoustic emission events characterizing the evolution of polymers′ damage and the damage location map. The results show the following: (1) The acoustic emission response of nonwater reaction polymer during compression can be divided into three stages, i.e., rise, stable, and severe fluctuation periods. (2) The greater the density, the more evident are the three stages and the shorter are the cumulative ringing times. (3) The acoustic emission monitoring damage position and quantity agree well with the actual compression damage of the specimen, indicating that the acoustic emission technology can more accurately monitor the nonwater reaction polymer destruction under pressure. Finally, the damage model proposed based on Weibull random distribution can better reflect the damage evolution of the nonwater reaction polymer during compression.

Key words: nonwater reaction polymer, uniaxial compression; acoustic emission, accumulative ringtimes, damage model