Mechanical Behaviour of TRC Composites: Experimental and Analytical Approaches

Abstract

Textile reinforced concrete (TRC) is a promising high-performance material that has been employed with success in new constructions, as well as a strengthening layer of existing structural components. In this work, we document the optimisation procedure of textile-based composites for new construction and for the seismic retrofitting of under-reinforced concrete elements and masonry buildings. The study, aimed at maximising the material performances avoiding waste of economic resources, was addressed by means of a series of uniaxial tensile tests conducted on a wide set of alkali-resistant (AR) glass fabrics and TRCs. The samples differed in terms of cement-based matrices, embedded textiles and addition of dispersed microfibers. The results highlight the effects of fabric characteristics and introduction of short fibres on the mechanical behaviour, proposing novel comparison parameters based upon the load bearing capacity and the deformation response of the composites. The application of simplified analytical models borrowed from the literature finally revealed the limitations of the available predictive approaches, suggesting future lines of investigation.

Editorial on Special Issue “Textile-Reinforced Cement Composites: New Insights into Structural and Material Engineering”

“…Although carbon or AR (alkali-resistant) glass fibres are used as the reinforcement material for TRCs in all other papers in this Special Issue due to their stiffness and strength properties, the paper by Mobasher, Dey, Bauchmoyer, Mehere, and Schaef [1] analyses the effect of high-toughness hydrophilic PP fibres on the cracking distribution associated with strengthening and toughening. The paper by Rampini, Zani, Colombo, and di Prisco [2] presents extensive experimental results of tensile tests on a wide set of AR glass fabrics and TRCs. The effect of the fabric coating and the addition of short fibres on the load capacity and the energy absorption is discussed.…”

Characterization of Short‐Term Strength Properties of Fiber/Cement‐Modified Slurry

“…e specific meanings of these parameters are shown in Figure 10. e relationship between stress and strain of fiber/cement-modified slurry with various fiber or cement contents could be obtained using equation (9), and the calculated data are summarized in Table 2. Table 2 lists the calculated results of fitting parameters in equation (9), while Figures 11 and 12 illustrate the fitting errors.…”

“…e residual strength q c of ber/ cement-modi ed slurry with various ber and cement contents could be obtained by substituting equation (9) and calculation data in Table 2 into equation (4), as shown in Figures 19 and 20. Advances in Civil Engineering Figure 19 shows that the residual strength of cementmodi ed slurry gradually increased from 12.4 to 134.4 kPa with the increase in the cement content from 5% to 30%, although there was a slight drop in cement content from 5% to 10%.…”

“…e energy dissipation W s of ber/cement-modi ed slurry with various ber and cement contents could be obtained by substituting equation (9) and calculation data in Table 2 into equation (6), as shown in Figures 21 and 22. Figure 21 shows that the energy dissipation W s of cement-modi ed slurry gradually increased from 0.27 to 2.15 J with the increase in the cement content from 5% to 30%.…”

“…Various studies have been conducted to investigate the influences of fiber on the property of cemented soil through unconfined compression test or splitting strength testing [9][10][11]. Several scholars also performed triaxial test [12], direct shear test [13], bending test [14], isotropic compression test [15], and cyclic shear test [16] on fiber-admixed cemented soil.…”