Abstract The red clay is widely distributed in Guizhou province, which characterized by high natural moisture content, difficult compaction and serious shrinkage crackingin, phosphogypsum discharged for 5 million tons every year province. For the sake of effectively reducing accumulation phosphogypsum, mixtures were prepared with cement as a curing agent mass ratios to 1:1, 1:2 1:3 (low content...

In Xinjiang's perennial cotton (Gossypium hirsutum)-planting soil, the average residual amount of plastic film is as high 265.3 kg/hm2, and problem pollution with in tillage layer has become a major problem. To explore mechanism separation soil determine conditions favorable for film-soil, this study established constitutive model film-soil contact based on discrete element method used to simul...

in this study, aluminum (al) matrix reinforced with micro-particles (30 µm) and nano-particles (50 nm) boron carbide (b4c) were used to prepare al-2.5%wt., b4c nano-composite and micro-composite, respectively, using mechanical alloying method. the mixed powders were mechanically milled at 5, 10, 15 and 20 hrs. the xrd results indicated that the crystallite sizes of both the micro-composite and ...

It is important to develop Martian soil simulants that can be used in Mars exploration programs and Mars research. A new Martian soil simulant, called Jining Martian Soil Simulant (JMSS-1), was developed at the Lunar and Planetary Science Research Center at the Institute of Geochemistry, Chinese Academy of Sciences. The raw materials of JMSS-1 are Jining basalt and Fe oxides (magnetite and hema...

the sustainability of the built environment is increasingly coming to the forefront of infrastructure design and maintenance decisions. to address this, development of a new class of more sustainable cement-based materials is needed. fiber reinforced self-consolidating mortar (frscm) was developed by optimizing the micromechanical parameters, which control composite properties in the hardened s...