Reinforcement of Flexural Members with Basalt Fiber Mortar

Abstract

Reconstruction of buildings and structures is becoming one of the main directions in the field of construction, and the design and production of works during reconstruction are significantly different from the ones of new buildings and structures. After carrying out a number of studies on the inspection of the technical condition of buildings in order to determine the effect of defects on the bearing capacity, the criteria for assessing the state of floor slab structures were identified. Conclusions on the state and further work of elements of reinforced concrete structures are considered. The authors achieve the aim of reinforcing flexural elements of reinforced concrete structures with fiber-reinforced mortar, which is especially important for floor elements with increased operational requirements. A technique for constructing a reinforcement layer using fiber-reinforced mortar from coarse basalt fiber has been developed. The parameters of basalt fiber in the reinforcement layer are substantiated. A method for solving problems of the operation of multilayer coatings under the influence of operational loads is used, in which the model prerequisites for describing the operation of layers are simplified, where the bearing layers are represented by classical Kirchhoff-Love plates. When solving problems, the maximum possible number of design features of flexural members is taken into account, in combination with appropriate experimental studies, the method allows us to consider all the variety of structures for reinforcing coatings and meet the needs of their practical application.

High Strength Construction Material Based on Sulfur Binder Obtained by Physical Modification

“…Second, the packing density increases, and the effect of shrinkage processes decreases. The maximum strength for a composite using marshalite is ave97.5 MPa (Figure 6a), this strength for a composite based on sulfur binder without the use of chemical modifiers was achieved for the first time [7,17,23,29,35,36]. Comparison of the results obtained with the literature data is presented in Figure 8.…”

“…A decre shrinkage processes leads to a decrease in internal stresses, and their slowdown lead gradual relaxation. These factors ultimately increase the strength of the ma However, it should be noted that the strength does not exceed 65-70 MPa [25][26][27][28][29][30], fully meets the requirements for building products. One of the first proposed che modifiers is dicyclopentadiene [31]; Figure 1 shows the chemical modificatio dicyclopentadiene.…”