Keyword: «stabilization»

POSSIBILITIES OF APPLICATION OF STABILIZED SOILS FOR THE PRODUCTION OF SMALL BUILDING MATERIALS

Authors:

Aitalina Andreeva,

Mariya Savvinova,

Olga Byrenina

It is shown that the stabilization of natural soils with ANT additives together with Portland cement causes a directed change in their properties and contributes to the development of new materials with an improved set of physical and mechanical characteristics for their use in the production of small building materials. The dependences of the compressive strength of samples from stabilized soils on the initial moisture content and the amount of additives introduced have been established. An optimal composition has been developed, characterized by improved compressive strength, water and frost resistance, recommended in the manufacture of building materials for low-rise construction.

Keywords: modification, frost resistance, physical and mechanical properties, reinforced soils, stabilization, small building materials, optimal formulation, strength grade

INTEGRITY RESTORATION OF GRADE III-IV MAMMOTH TUSKS BY RESIN TREATMENT FOR SUBSEQUENT SOUVENIR PRODUCTION VIA CNC MILLING

Authors:

Gleb Botvin,

Vyacheslav Petrov,

Aleksandr Chirikov,

Tatyana Isakova,

Tyskyl Solovev

A method for the treatment of grade III-IV mammoth tusks with polymer resins has been developed to produce blanks suitable for subsequent processing on computer numerical control (CNC) machines. The procedure consists of alternating vacuum treatment stages with a stage in which the sample is maintained under excess pressure during treatment. This sequence has been identified as the most effective approach for preserving the structural integrity of low-grade mammoth tusk blanks.

Keywords: stabilization, impregnation, mammoth ivory, polymer resins, milling