Physical and mechanical properties of pre-bound aggregate composites

Abstract

New building materials and products in construction and reconstruction, which improve the performance and efficiency characteristics of buildings, reduce material consumption, cost and labor intensity, are always relevant. A promising direction for further development of composite materials is the employment of pre-bound aggregate materials. Their production is a two-stage process, which involves at first creating an optimal aggregate mix and gluing the grains to each other and secondly filling the voids of the obtained aggregate framework with a high-workability matrix. Presented research is an experimental investigation of physical and technical properties of pre-bound aggregate composite materials. Composites with complex binders are also considered in this study. In such cases, the aggregate framework and the grouting matrix were made of binders of different nature, which are incompatible when the components are mixed ordinarily. When studying composites, a complex of physical and mechanical methods was used. Improvement of physical and mechanical properties of framework composites in comparison with composites obtained according to conventional techno- logy has been established. These advantages are identified primarily for such properties as deformability, impact strength, creep.

Effect of gelatin powder, almond shell, and recycled aggregates on chemical and mechanical properties of conventional concrete

“…The findings indicate that the high-water absorption of the aggregates and the weak areas created by the mortar adhering to the old interface is primarily responsible for the RAC's deterioration in terms of its mechanical properties. The sturdiness of RAC likewise was explored, and the outcomes show that the higher the reused total (RA) content, the mortar content appended to the RA, and the W/C (water-to-ash ratio), the more regrettable the strength of RAC [21][22][23]. The use of almond shell and gelatin powder to mix with concrete lacks sufficient information regarding the properties of the fresh and hardened shell and gelatin powder, as can be seen from earlier literature.…”