HexShield Modular Ice-Cell Architecture: A Frozen Water-Cell Construction System for Industrial Mars Surface Infrastructure

This paper presents HexShield Modular Ice-Cell Architecture, a conceptual Mars construction system based on a deep honeycomb structural framework filled with modular water-based shield cells that are inserted in liquid-filled form and then frozen in place. Once frozen, the cells act as radiation-shielding mass, thermal buffer mass, and a partial structural shell, allowing the completed structure to behave as a hybrid of framed construction and interlocked frozen cellular support. HexShield is proposed primarily for later-phase industrial Mars development, where local structural fabrication, robotic assembly, large-scale water handling, and repeatable civil construction are available. The concept is intended not only for domes, but also for arched corridors, connected halls, transport shelters, outposts, industrial sheds, and other surface-interface infrastructure requiring modular shielding and scalable construction. The paper distinguishes HexShield from earlier monolithic or inflatable Mars ice-habitat concepts through its emphasis on modular framed cells, staged fill-and-freeze construction, replaceable deep-cell modules, and applicability to industrial-scale Mars surface infrastructure. It is published as a public prior-art disclosure and technical concept white paper to place the architecture into the public record and support future refinement, testing, and discussion.