High-pressure densification of composite lunar cement

In order to minimize the binder content in composite lunar "cement," this paper uses JSC-1A lunar soil simulant and unsaturated polyester resin (UPR) to produce low-binder-content composite. Important system parameters such as compression pressure, compression duration, vibration, loading rate, loading number, and initial grain size distribution are analyzed. The most critical control variable is the compression pressure: at 350 MPa, the binder content is reduced to 6.5-8.7% by weight and the flexural strength is approximately 30-40 MPa. This research is important for in situ resource utilization for future lunar base construction and expansion.