eduzhai > Physical Sciences > Materials Sciences >

Sodium metasilicate cemented simulation material and its mechanical properties

  • sky
  • (0) Download
  • 20211114
  • Save

... pages left unread,continue reading

Document pages: 17 pages

Abstract: Geotechnical model test is one of the most commonly used methods in the field of geotechnical engineering. The simulation material with appropriate properties is of great significance to its reliability. In this paper, a new type of simulation material is developed, which is composed of coarse aggregate (quartz sand and or barite sand), fine aggregate (barite powder) and cementitious material (anhydrous sodium silicate). The composition of each raw material is the key influencing factor, which has a significant impact on the physical and mechanical parameters of the simulated material. In order to establish the relationship between parameters and factors, the density, Young s modulus, uniaxial compressive strength and tensile strength of the material were studied through a series of orthogonal testsxperiments with hundreds of samples. By orthogonal regression analysis, the regression equations of each parameter were obtained based on experimental data, which can predict the properties of the developed analogue materials according to proportions. The experiments and applications indicate that sodium metasilicate cemented analogue material is a type of low-strength and low-modulus material with designable density, which is insensitive to humidity and temperature and satisfies mechanical scaling criteria for weak rock or soft geological materials. Moreover, the developed material can be easily cast into structures with complex geometry shapes and simulate the deformation and failure processes of prototype rocks.

Please select stars to rate!

         

0 comments Sign in to leave a comment.

    Data loading, please wait...
×