Flexural Behavior of Square Ferrocement Panels Enhanced with Recycled Tires Sim Strengthened by CFRP

Abstract

This paper presents an experimental algorithm with the results of using steel fibers in ferrocement panels, which were recovered from tires scrap. Waste steel fibers were cut with the same geometrical characteristics of normal steel fibers and were used in the panels at different layers. To have a reference ferrocement specimen, a plain mixture without fibers and mixtures containing a ratio of recycled steel fiber were also prepared. Some mechanical tests, such as compressive strength, splitting tensile strength and flexural strength were determined. Furthermore, load deflection behaviors for 24 panels specimens were carried out under patch load. Test results show that the recycled steel fibers layers recovered from scrap tires affected the mechanical behavior of ferrrocement panels that are similar to the number of wire mesh layers. Depending on the distribution of R.S.F layers and wire mesh layers, the load-deflection curves were found. A comparison between these curves indicates that the R.S.F can reduce the deflection of panels, and increasing the number of wire mesh layers can increase the ability to bear stresses for panels. Rehabilitation with carbon fiber strips CFRP carried out with three forms (box network, inclined with diagonal, parallel to the diagonal and mix of diagonal and box network). The curves show that the rehabilitation with a parallel form to the diameter of the sample is a better treatment, which is characterized by resistance to stresses rather than other forms. We estimate that the recycled steel fibers increase the flexural strength and tensile strength, and 10% is the optimal ratio for increasing the flexural strength and tensile, increasing the number of wire mesh layers increases the ability to bear stresses of the panels. Recycled steel fibers can cause reduction in the deflection of ferrocement panels and can give the same bearing strength proximity (or less) to the panel containing the same number of wire mesh layers.

Strength and permeability of ferrocement structure by using ground granulated blast furnace slag

“…The lowest permeability coefficient values are at the lowest penetration depth values and vice versa (Figure 7). Based on SK-SNI S-36-1990-03 [14], concrete is watertight if the penetration value that occurs into the concrete is a maximum of 50 mm for medium-aggressive water and 40 mm for strong-aggressive water. Based on the test results, the concrete mortar has met the requirements of waterproof concrete, both assertively aggressive and mediumly aggressive, as shown in Table 10.…”

“…In addition, the volume fraction of reinforcement plays a vital role in the highest strength-bearing capacity of ferrocement. Various studies have been conducted on ferrocement with various reinforcements such as Carbon Fiber Reinforced Polymer (CRFP) [14], steel fiber [15], basal fiber [16], Natural Sisal Fibre (NSF) [17].…”