Biopolymer-bound Soil Composites(BSC),are a novel bio-based construction material class,produced through the mixture and desiccation of biopolymers with inorganic aggregates with applications in soil stabilization,bri...Biopolymer-bound Soil Composites(BSC),are a novel bio-based construction material class,produced through the mixture and desiccation of biopolymers with inorganic aggregates with applications in soil stabilization,brick creation and in situ construction on Earth and space.This paper introduces a mixture design methodology to produce maximum strength for a given soil-biopolymer combination.Twenty protein and sand mix designs were investigated,with varying amounts of biopolymer solution and compaction regimes during manufacture.The ultimate compressive strength,density,and shrinkage of BSC samples are reported.It is observed that the compressive strength of BSC materials increases proportional to tighter particle packing(soil dry bulk density)and binder content.A theory to explain this peak compressive strength phenomenon is presented.展开更多
文摘Biopolymer-bound Soil Composites(BSC),are a novel bio-based construction material class,produced through the mixture and desiccation of biopolymers with inorganic aggregates with applications in soil stabilization,brick creation and in situ construction on Earth and space.This paper introduces a mixture design methodology to produce maximum strength for a given soil-biopolymer combination.Twenty protein and sand mix designs were investigated,with varying amounts of biopolymer solution and compaction regimes during manufacture.The ultimate compressive strength,density,and shrinkage of BSC samples are reported.It is observed that the compressive strength of BSC materials increases proportional to tighter particle packing(soil dry bulk density)and binder content.A theory to explain this peak compressive strength phenomenon is presented.
