Keyword: «compression»

Currently one of the main materials for the construction of buildings and structures is concrete. Improving the performance of concrete is a priority of modern scientific research. Frequent transitions through zero degrees in the autumn-spring seasons, other aggressive factors greatly affect the condition and safety of building materials. This work presents the experience of modifying heavy concrete M200, polymer additive Amokor KM. The data on increased strength characteristics of materials were obtained as a result of 2 years of field tests.

Polymer composite materials are increasingly used as materials in aircraft, auto and shipbuilding, in the construction of buildings and structures. due to their light weight, high strength and durability. To replace carbon fiber, basalt and glass fibers are increasingly used as reinforcing fillers. In this paper, samples of basalt and fiberglass based on epoxy resin, obtained by vacuum infusion, were studied for cyclic loading with a uniaxial increasing load "tension-compression". According to the results of the tests, the average strength values were obtained: for samples of basalt-paste, this value was 182.56 MPa, for fiberglass – 179.26 MPa. The tests carried out showed the effectiveness of this method and the validity for determining the resource characteristics of materials.

Today, the main materials for constructing buildings and structures are concrete, brick, wood, and metal. Improving the performance characteristics of these materials is a priority task of modern scientific research. The paper presents the experience of modifying heavy concrete М200, М75, and М125 using polymer impregnation «Amocor». Data on the increase in the strength characteristics of the materials under study have been obtained. Tests were conducted on bending within a wide range of climatic temperatures from +20 °C to –60 °C. It was revealed that the strength of unmodified samples decreased at a test temperature of –30 °C, which is explained by the growth of internal stresses. Modification of the samples allowed for the removal of internal stresses.