High-Pressure Densification of Composite Lunar Cement
نویسندگان
چکیده
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. DOI: 10.1061/ (ASCE)MT.1943-5533.0002047. © 2017 American Society of Civil Engineers. Author keywords: Lunar regolith; Binder; Particulate composite; Compaction.
منابع مشابه
Effect of incorporation of grits waste on the densification behavior of soil-cement bricks (Efeito da incorporação de resíduo grits sobre o comportamento de densificação de tijolo solo-cimento)
In the cellulose industry the Kraft process is widely used to produce cellulose. This process generates huge volumes of inorganic solid wastes, including the grits waste. In Brazil, the final disposal of this solid waste is of high economical and environmental interest. The present work assesses the influence of the addition of grits waste on the densification behavior of soil-cement bricks. Th...
متن کاملDevelopment of near-zero water consumption cement materials via the geopolymerization of tektites and its implication for lunar construction
The environment on the lunar surface poses some difficult challenges to building long-term lunar bases; therefore, scientists and engineers have proposed the creation of habitats using lunar building materials. These materials must meet the following conditions: be resistant to severe lunar temperature cycles, be stable in a vacuum environment, have minimal water requirements, and be sourced fr...
متن کاملInvestigation on the Consolidation Behaviour of Aluminium / nano - SiC Composite Powders Using Non - Linear Compaction Equation
The densification response of aluminium powder reinforced with nanometric SiC particles (50 nm) during uniaxial compaction was studied. To determine the effect of SiC nanoparticles on the compressibility of the matrix, monolithic Al powder was also examined. The effect of SiC nanoparticles on the densification mechanisms, i.e. particle rearrangement and plastic deformation, was analysed using m...
متن کاملConsiderations of Well Cementing Materials in High-Pressure, High-Temperature Conditions (RESEARCH NOTE)
As worldwide demand of hydrocarbon is growing fast, the oil and gas companies have been forced to explore reservoirs with more hostile conditions, such as high-pressure, high-temperature conditions. Improved technology, material selection and testing procedures are required to overcome the common problems in these conditions. One of the main phases of well construction is cementing job. Appropr...
متن کاملVariations in the sky brightness during a lunar eclipse
A total lunar eclipse is conjectured to have influence on the physical conditions of an environmental area, particularly on the brightness of the sky. The phenomenon might also be relevant on weather parameters change on Earth, such as temperature, humidity and pressure, though a straightforward correlation is not easy to establish. This work mainly aims at measuring the brightness of the sky a...
متن کامل