Influence Of Elevated Temperature Research Articles

Improving elevated temperature performance of geopolymer concrete utilizing nano-silica, micro-silica and styrene-butadiene latex

Geopolymer binders (GPBs) have gained an increasing research potential in recent years due to their environmental, economic and durability advantages. This paper aims to improve elevated temperature performances of volcanic tuff (VT) based geopolymer concrete (GPC) by utilizing nano-silica (NS), micro-silica (MS) and styrene-butadiene latex (SBL). To this end, NS, MS and SBL additives were added to GPC samples at 2%, 2% and 5% ratios by weight of binder, respectively. GPB was obtained by activating ground VT with 12 M NaOH solution. Produced GPC samples were exposed to elevated temperatures (100, 300, 500 and 700 °C) for 1 h after reaching the target temperature. Changes in compressive strength, water absorption, visual appearance, weight and microstructure of GPC samples were investigated after the influence of elevated temperatures. The experimental findings displayed that compressive strength of GPCs increased up to 300 °C independently of the type of additive used, but higher temperatures than 300 °C caused decrease in compressive strength values. As a result of mechanical tests and microstructure investigations, it was determined that MS additive significantly increased the elevated temperature performance of GPCs. Additionally, color of GPC samples turned gray after elevated temperatures due to dehydration of GPB and microstructural transformations occurring in aggregates.

ПЕРСПЕКТИВА ПРИМЕНЕНИЯ ДЛЯ МОДИФИКАЦИИ ДРЕВЕСНЫХ МАТЕРИАЛОВ Α-ВИНИЛНАФТАЛИНА

Natural wood is the most common natural polymer material that is affordable, non-toxic and widely used in various fields of industry and construction. However, wood also has disadvantages, to eliminate which it is modified with the use of organic and inorganic agents, oligomers and polymers that can protect it from external factors. The paper studies the possibility of using such a vinylaromatic monomer as α-vinylnaphthalene for modification and protective treatment of natural birch wood. It is shown that during processing in the conductive elements of birch wood under the influence of elevated temperatures, the polymerization of α-vinyl naphthalene proceeds by a radical mechanism. However, 100 % conversion of α-vinylnaphthalene and polyvinylnaphthalene cannot be achieved. Thus, the conductive elements of natural wood contain a composite consisting of α-vinyl naphthalene and polyvinyl naphthalene. It is shown that with an increase in the content of the proposed modifier in birch wood, water absorption and swelling of wood-polymer-monomer composite samples significantly decreases. This will increase the service life of products based on modified wood. The introduction of the proposed technology for modifying low-value wood species will contribute to the conservation of forest resources and their rational use

Influence of elevated temperature and reduced pressure on the degradation of iron nitride compound layer formed by plasma nitriding in AISI D2 tool steels

AbstractThe stability of an iron nitride compound layer prepared by plasma nitriding of AISI D2 tool steel is investigated using in situ high‐temperature X‐ray diffraction at rising temperature up to 470°C and for an isothermal treatment at 450°C. Both kinds of experiment were carried out in vacuum. For all treatments, the iron nitride compound layer, which consists mainly of ε‐Fe3N, decomposes and forms an α‐Fe ‘black’ layer. The stability of the iron nitride compound layer is discussed in terms of the phase composition, the relative change of the lattice parameter, the nitrogen content and the decomposition kinetic. The decomposition takes place via a phase transition in two steps: (i) the out‐diffusion of nitrogen from ε‐Fe3N above an annealing temperature of 300°C and (ii) the transformation of ε‐Fe3Ny into α‐Fe when the nitrogen content (y) declines below 0.66. The second step is accompanied by the formation of Fe3C precipitates at about 450°C.

The influence of elevated temperatures and composition on the water activity of egg powders

This study aimed to investigate water activity (aw) changes in different egg powders (egg white, egg yolk, and whole egg) as influenced by temperature between 20°C and 80°C. A high-temperature test cell was used to measure the aw in egg powders of different moisture contents (2 to 30% wet basis) during heating in a closed environment. Then, the net isosteric heat of sorption (qst) of the egg powders was calculated. The qst values were used in the Clausius–Clapeyron equation to generate the isotherms of the egg powders at 40°C and 80°C. The results showed that at fixed moisture content and temperature, egg yolk powder had higher aw than whole egg and egg white powders. In addition, aw of the three egg powders in closed containers all increased with temperature. Egg white powder had stronger binding capacity to water, as reflected by the higher qst, compared to the other two egg powders. Practical applications An important determinant for the survival of microorganisms during thermal treatments is food water activity (aw), which changes with temperature. Currently, there is no scientific data regarding aw changes in egg powders at elevated temperatures. Therefore, this study aimed to determine the aw changes in egg powders as a function of temperature and composition. Data produced by this study regarding aw changes provide useful information for designing effective heat treatments to control pathogens in egg powders. The isosteric data should also help estimate the energy efficiency of egg powder drying operations.

Influence of Elevated Temperature on Fracture Behavior Of Stainless Steel.(Dept.M)

Fracture mechanics approaches have been employed to study the fracture behavior of the exchanger tubes made of austenitic stainless steel at elevated temperatures in fertilizer plant. Test conditions range from ambient lo elevated temperatures, monotonic to cyclic loading, and creep. Experimental work was carried on for creep, creep -fatigue interaction and fatigue at ambient and high temperatures on notched specimens. The temperature test was grouped into the range of homologous temperature (T/T)in the range of 0.177 (RT), 0.3, 0.40 and 0.50 of melting point for AISI 316 stainless steel. Furthermore experimental work has been extended by using another group of Chemical composition analysis and tensile tests were initially specimens made of AISI 304 stainless steel. performed to record the mechanical properties of both materials at room temperature Parametric representation of crack growth rate in terms of independent variables in Region II of crack growth curves has been proposed for creep, Creep-fatigue interaction and fatigue of 316 stainless steel at ambient and high temperature rates. To demonstrate the validity of the present approach, the proposed equation has been used todetermine the fatigue crack growth rate versus the change in the stress-intensity-factor relationship for AISI 304 stainless steel Based on this study, exp erimental results as well as analytical results obtained by using the proposed equation for AISI 316 and AISI 304 stainless steel were analyzed, and recommendations for applications are made. Thus in the present study it has been attempted to obtain a simple criterion for crack growth behavior in AISI 316 stainless steel under high temperature creep, fatigue and creep -fatigue interaction conditions.

Influence of Elevated Temperatures on the High-Strength X3NiCoMoTi 18-9-5 Maraging Steel Behavior

Influence of Elevated Temperatures on the High-Strength X3NiCoMoTi 18-9-5 Maraging Steel Behavior

Influence of Elevated Temperature on Concrete Properties Containing Natural Wastes Treated by Pyrolysis

Concrete is probably the most extensively used construction material in the world. The modern concept of construction is directed at the use of recycled materials, in particular, various waste products. This solves a number of problems -saving the expensive materials; - decreasing CO2 emissions by reducing the production of construction materials, so, these can also be used as refractory materials. Plant fibers are the most abundant fiber among all the natural fibers. Bamboo, palm, sisal, jute, date kernel, flax etc. are the commonly known plant fibers. Plant fibers are also called cellulosic fiber and have quite promising tensile strength. Natural Plant fibers treated by pyrolysis in concrete such as additions; determine the effect of these substances and the effect of temperature on the properties of concrete. The natural fibers in concrete are added accordingly with the percentage of 0.5%, 1%, 1.5% and 2% by weight of cement concrete cubes are tested at the age of 7 and 28 days of curing. Natural waste treated by pyrolysis and different additives on concrete behavior to improve its performance in the future to use in Civil Engineering and Construction World. The optimum result for natural fibers was observed at 1.0% for bamboo and date kernel and 1.5% for palm oil of natural fiber.

Utilization of ceramic waste powder in cement mortar exposed to elevated temperature

The utilization of ceramic waste powder (CWP) is increasing in construction industry and influences significantly fresh and mechanical properties of concrete. However, these properties of concrete significantly changed if subjected to higher temperature. Thus, this paper presents the effect of partial replacement of cement to CWP with different weight percent (0%, 20%, 40% and 60%) on the workability, dry density and compressive strength of the concrete. In addition, the influence of elevated temperature (200–800 °C) at 2 h was also carried to investigate the effect on residual compressive strength of the concrete. Furthermore, ANOVA analysis was used for the prediction and optimization of the influenced variables on the compressive strength (response) of the concrete mixes. The results showed that the CWP and temperature significantly influenced the workability, dry density and compressive strength of the concrete mixes. And increasing the percentages of CWP leads to a reduction in the workability, dry density and compressive strength of the concrete mixes. The highest values of workability, dry density and compressive strength were obtained as 240 mm and 220 mm, 2200 kg/ $${\mathrm{m}}^{3}$$ and 2215 kg/ $${\mathrm{m}}^{3}$$ and 30 MPa and 33 MPa for A-20 and B-20 mixes, respectively, whereas increasing the temperature caused to decrease the compressive strength of the concrete, and in this context, the maximum residual compressive strength was observed as 32 MPa and 36 MPa for A-20 and B-20, respectively, at 200 °C. Furthermore, CW-A and temperature significantly impact the compressive strength of the concrete, whereas CW-B not. For the optimization, 22% of CW-A, 31.5% of CW-B and 122 °C provide the optimum compressive strength of the concrete. These results give a good indication that CWP could be used in the production of eco-friendly concrete with improved mechanical properties.

The effectiveness of methods for laboratory diagnosis of otodectosis in dogs

Otodectosis in domestic dogs is caused by ectoparasites of the species Otodectes cynotis (Hering, 1838), which parasitize on the inner surface of the auricles, the external auditory canal and the eardrum. The invasion is accompanied by severe itching, otitis, anxiety of animals, and sometimes – their death due to complications. The effectiveness of measures to combat otodectosis in dogs largely depends on the correct and accurate diagnosis of the invasion. At the same time, existing laboratory methods have different diagnostic efficiency. The aim of the study was to establish the effectiveness of mortal and vital methods of lifelong diagnosis of otodectosis in dogs. The effectiveness of modern methods of laboratory diagnosis of live and dead ticks of the species O. cynotis in dogs has been established. The most effective methods have been identified, the use of which will improve the quality of acarological research. Studies have shown that the most effective method of mortal methods was A. M. Titarenko, where a mixture of 50% aqueous solution of glycerin, dimethyl sulfoxide and 10% sodium hydroxide solution (the intensity of the invasion was 5.4 specimens of mites) was used as an illuminator. This method exceeded the intensity of invasion using the compressor method – 2 times (2.7 specimens of mites, P < 0.001), the flotation method – 1.2 times (4.5 specimens of mites). At the same time, the flotation method for otodectosis in dogs was 1.7 times more effective (P < 0.001) than the use of the compressor method. Of the vital methods of laboratory diagnosis of otodectosis in dogs, the most effective was the method using vegetable oil as a scraper clarifier, the intensity of the invasion was 5.9 copies. ticks. The use of this technique in terms of the number of detected otodectes exceeded the method of A.V. Alfimova (influence of elevated temperature) – 2.1 times (2.8 specimens of mites, P < 0.001) and the method of M.G. Khatin (centrifugation under the influence of elevated). temperature) – 1.3 times (4.6 specimens of mites, P < 0.001). In addition, the congratulatory method of M. G. Khatin in the diagnosis of otodectosis was 1.6 times more effective (P < 0.001) than the method of A. V. Alfimova.

Wetting Kinetics and Microstructure Analysis of BNi2 Filler Metal over Selective Laser Melted Ti-6Al-4V Substrate.

The wetting kinetics of nickel-based filler metal (BNi2) over selective laser-melted Ti-6Al-4V (SLMed TC4) titanium alloy in a protective argon atmosphere is experimentally investigated using a real-time in situ hot stage equipped with an optical microscope. The spreading processes at different temperatures are similar, and the overall wetting/spreading process can be roughly divided into three stages: (i) an initial stage, (ii) a rapid spreading stage, and (iii) an asymptotic stage. Moreover, the wetting kinetics of the BNi2/SLMed TC4 system can be expressed by empirical power exponential function Rn~t with n = ~1. In the process of spreading, Ti-based solid solution (Ti(ss)) and intermetallic compound (Ti2Ni and TiB2) were formed at the interface within the reaction domain, and the phase transition of α’ martensitic to α-Ti and β-Ti also took place. The influence of elevated temperature on the spreading and wetting kinetics of the BNi2/SLMed TC4 system was studied, and the results show that the increase of temperature has a slightly promoting effect on the spreading, but a limited impact on the value of n. In addition, the spreading and wetting kinetics of BNi2/SLMed TC4 system are similar to those of BNi2 on conventional forged TC4 substrate.

Теплостійкість іонноазотованих алюмінієвих сплавів при ізотермічному та термоциклічному впливі

Тhe study of the main parameter that limits the use of pistons made of aluminum alloys in boosting engines - heat resistance and its dependence on diffusion ion-nitrided layers. In the analysis of recent studies and publications, the most common methods of heating samples during tests, their advantages and disadvantages are identified. The task of the study is to identify the relationship of factors that determine the heat resistance of ion-nitrided aluminum alloys under isothermal and thermocyclic effects for effective analysis of the mechanism of phenomena and control of the technological process of strengthening the pistons. The availability of this information will increase the strength and reliability of both the coatings themselves and the parts with coatings at the stage of their design. A set of laboratory equipment based on the Nutcracker installation was used for the study, which provides cyclic change of temperature and load of the sample, control and recording of temperature values, loading and deformation and operation in automatic mode. Flat samples of aluminum alloy AL2I with heat-protective diffusion ion-nitrided layers applied in the VIPA-1 installation and samples without treatment were used. Characteristics of the thermal cycle: 500 ° C ↔ 720 ˚C. heating time - 10 sec., cooling 15 sec., which corresponds to the real operating conditions of the pistons. The fixed value of the load was 0.8σВ according to DSTU 2637-94 and the criteria for determining the allowable stress in the Standards of ASME (80% of the average value of stresses that lead to a total deformation of 1%). The curves of isothermal and thermocyclic creep having three clearly expressed sites of creep are defined, depending on temperature their duration is different. Isothermal and thermocyclic creep curves of aluminum alloy AL21 with heat-protective diffusion ion-nitrided layers have three distinct creep areas, depending on the temperature their duration is different. This is due to the presence in the surface layer of the reinforcing phase AlNi; uniformity of distribution of components of a covering on a surface and degree of their refractoryness. This is due to the complexity of the movement of dislocations, which on their way face the need to overcome large obstacles in their movement, caused by the presence of a reinforced layer. Conclusions. Based on the obtained curves of isothermal and thermo cyclic creep, it is established that the type of creep curves depends on the temperature and conditions of its influence on the composition "base-coating"; the time to failure in the thermo cyclic test mode is less than in the isothermal; in the process of creep of aluminum alloy AL21 with heat-protective diffusion ion-nitrided layers, two competing processes are observed: hardening due to plastic deformation and removal of hardening under the influence of elevated temperature; despite the different composition of heat-protective diffusion ion-nitrided layers, the resistance to isothermal and thermo cyclic creep of the reinforced aluminum alloy AL21 increased by 1.8 ... 2.2 times.

Modernization of the heat pump installation for drying wheat

The most energy-consuming and most critical stage of post-harvest processing is grain drying. Safety of grain depends on its drying. For drying grain, grain drying plants are used that remove excess moisture from the grain. In most cases, drying occurs under the influence of elevated temperatures with a constant supply of heat. After drying, the grain must be cooled to eliminate irreversible processes. The drying process is slow due to temperature limitations. To speed up the drying process, various techniques are used, one of which is the alternation of heating and cooling processes (differentiation of heat input). To increase the drying energy efficiency in the conditions of differentiation of the supply of thermal energy, it is advisable to use heat pump units. Heat pump units allow the creation of a heating agent (heated air) and a cooling agent (cooled air). Studies have shown that for different grain parameters, different temperature characteristics of heating and cooling agents are required. For independent temperature control of heating and cooling agents, an original design of a heat pump installation has been developed. To automate the control of the drying process, several control schemes have been developed and investigated.

Influence of elevated temperature on the microstructure and mechanical performance of cement composites reinforced with recycled carbon fibers

This study comprises the investigation on the effects of elevated temperatures (up to 900 °C) on the reinforcement mechanism of recycled carbon fiber (rCF) based cement composites. A detail investigation was conducted to study the interaction of rCF with hydration products at different temperatures (25 °C, 200 °C, 400 °C, 600 °C, 800 °C and 900 °C) by using x-ray diffraction (XRD), differential thermogravimetric (DTG) analysis and scanning electron microscopic techniques. Furthermore, mechanical properties, including compressive strength (ƒ'c), splitting tensile strength (ƒ's), and flexural strength (ƒ'F), were experimentally studied as a function of rCF dosage and elevated temperature. Results revealed that the reinforcing effect of rCFs was promising up to 600 °C due to the release of high-pressure steam through channels on the surface of rCFs. At 900 °C, rCFs were fully decomposed and resulted in empty tunnels which subsequently effected the performance of cement composites. A sharp decrease in the compressive and splitting tensile strength was observed at 800 °C while the flexural strength was significantly reduced at 600 °C. In the end, the relation of rCF dosage and elevated temperature with residual mechanical properties of cement composites was discussed through multivariate statistical models.

Influence of elevated temperature on electron flows in chloroplasts of barley

The efficiency of electron carriers in thylakoid membranes untreated and exposed to heat 7-day-old barley seedlings was evaluated with PAM fluorescence. Darkness–light transitional states in chloroplasts after heat exposure are studied. Thermoinduced changes in linear and cyclic electron transport chain of chloroplasts are revealed. The activation of NADPH-dependent electron flux after exposure to elevated temperatures is shown. We assumed that ΔрН of thylakoid membranes employed the regulatory role in the distribution of electron flows and the adaptation of the photosynthetic apparatus to stressful effects.

Influence of elevated temperature on properties of radiation shielding concrete with electric arc furnace slag as coarse aggregate

The development of value-added materials from by-product of the steel-making process can promote sustainability in construction to move towards a circular economy. The use of Electric Arc Furnace (EAF) steel slag as heavyweight coarse aggregate to develop sustainable radiation shielding concrete could provide both technical and economic benefits with less environmental impact. This contribution investigates the behaviour at high temperature of a sustainable radiation shielding concrete. Thermal behaviour of EAF slag concrete was compared to another heavyweight concrete made of barite aggregates and to a normal-weight concrete. On one hand, the thermal stability of the three different aggregates was determined via simultaneous Thermogravimetry and Differential Scanning Calorimetry analyses and visual observations after 10 °C/min heating. On the other hand, the evolution of thermal conductivity of concretes during heating, the residual mechanical properties and the assessment of potential spalling occurrence were investigated. Stereo-microscope and Scanning Electron Microscope pictures provide additional explanations by showing the paste-aggregate interface after heating at 450 °C. The results indicated that EAF concrete displayed less strength reduction at increasing temperature. This improved behaviour is attributed to both the strong bond between the paste and the aggregates, and the better thermal behaviour of the EAF slag aggregates compared to barite aggregates.

Influence of elevated temperatures on the bond behaviour between concrete and NSM-CFRP strips

This paper presents an experimental and numerical study about the effects of elevated temperatures on the bond behaviour between concrete and carbon fibre reinforced polymer (CFRP) strips installed according to the near-surface mounted (NSM) technique. In the first part of this study, single-lap shear tests were performed on concrete prisms strengthened with CFRP strips inserted into slits pre-cut in the concrete cover and bonded with an epoxy-based adhesive. The specimens were first heated up to the target temperature (from 20 to 270 °C, measured in the bonding adhesive) and then loaded up to failure. The results obtained show that with increasing temperatures (i) the bond strength is significantly reduced, (ii) the strain distribution along the bonded length becomes closer to linear, and (iii) the failure mode changes from CFRP tensile failure at 20 °C and 50 °C to adhesive failure in the CFRP-adhesive interface at higher temperatures. In the second part of this study, based on the results obtained in the experiments, a numerical procedure was developed to determine the local bond-slip laws at different elevated temperatures. In general, the stiffness and maximum bond stress of the obtained laws decreased with increasing temperatures; in addition, the predicted load vs. slip curves fit well the experimental counterparts.

Influence of elevated temperatures on compressive and flexural strengths of Cocos nucifera Linn. fiber strengthened lightweight foamcrete

The call for lightweight foamcrete technology is impelled by the amplified rules and guidelines with the aim of minimizing greenhouse gas emission and reducing carbon footprint. The use of natural fibers in foamcrete is considered as a useful option in making concrete a sustainable material. Therefore, the aim of the present study was to determine the compressive and flexural strengths of foamcrete reinforced with Cocos nucifera Linn. fiber (CNF) exposed to elevated temperatures. CNF refers to agricultural waste or by-products obtained from the distribution of coconut oil and accumulated in a large amount in Malaysia. This study aimed to identify the response of CNF towards six different contents (0.1%, 0.2%, 0.3%, 0.4%, 0.5%, and 0.6%) by mix volume. Three different densities of 650, 1050 and 1450 kg/m3 were tested in this study. The proportion of foamcrete constituted cement, sand, and water which were represented by the ratio of 1:1.5:0.45. Results showed that, CNF-strengthened foamcrete offered progressively ductile structure contrasted with plain foamcrete at elevated temperatures. The incorporation of CNF enhanced the mechanical properties at each predetermined temperature for all densities investigated. This demonstrates that CNF has strong bonding and good quality of chemical properties that are unique to it. The optimum volume fractions of CNF that gave the best improvement in mechanical and high temperature properties were 0.3% for 650 kg/m3, 0.4% for 1050 kg/m3 and 0.5% for 1450 kg/m3.

Numerical investigation and experimental verification of thermal frequency of carbon nanotube-reinforced sandwich structure

The modal responses of multi-walled carbon nanotube-reinforced composite sandwich structural plate are computed under the elevated temperature environment using a higher-order polynomial kinematic model and the isoparametric finite element steps. The proposed model accuracy has been verified with experimental modal values under the influence of elevated temperature and ambient conditions. To perform the modal experiment the nanotube-reinforced composite sandwich panel filled with the epoxy core is fabricated. Further, the experimental elastic properties of epoxy, nanotube/epoxy composite and the sandwich are obtained individually for the current computational purpose. A tailor-made finite element computer code (MATLAB environment) is prepared using the multiscale mathematical formulation for the evaluation of thermal frequencies of the nanotube sandwich panel. The impact type vibration analyser has been utilized for the current testing purpose with the help of three components i.e. hardware (compact data acquisition system, cDAQ-9178), software (LAB-VIEW) and a microcontroller controlled thermal chamber (to maintain temperature profile). Finally, wide varieties of numerical examples are solved using the proposed computational model for the different design-related parameters. The intrinsic behaviour of each parameter on the epoxy-filled nanotube sandwich construction including the elevated temperature loading is discussed in details.

Influence of elevated temperature on alkali-activated ground granulated blast furnace slag concrete

Purpose This paper aims to present an experimental investigation on the performances of alkali-activated slag (AAS) concrete and Portland slag cement (PSC) concrete under the influence of elevated temperature. In the present study, the alkali-activated binder contains 85% of ground granulated blast furnace slag (GGBFS) and 15% of powder blended as chemical activators. Design/methodology/approach For the purpose, standard size of cube, cylinder and prism have been cast for a designed mix of concrete. The AAS concrete specimens were kept for water as well as air curing. After attaining the maturity of 28 days, the samples were first exposed to different elevated temperatures, i.e. 100°C, 200°C, 300°C, 400°C, 500°C, 600°C, 700°C and 800°C. Later on, the tests were conducted on these samples to find the change in weight and the residual strength of the concrete. Findings After 500°C exposure, a considerable amount of the strength loss has been observed for AAS concrete. It has been evaluated that the performance of AAS concrete is better than that of the PSC concrete at elevated temperature. Research limitations/implications The present research work is being applied on the material for which the experimental result has been obtained. Practical implications The author has tried to develop a new type of binder by using steel industry waste material and then tested at elevated temperature to sustain at high temperatures. Social implications This research may give a social impact for developing mass housing project with a lower cost than that of using a conventional binder, i.e. cement. Originality/value A new type of binder material is being developed.

TRM-to-Masonry Bond under Elevated Temperatures: Lightweight versus Normalweight Matrices

In the last decade, Textile Reinforced Mortar (TRM) systems have increasingly been gaining ground as a means of strengthening damaged or seismically deficient masonry structures, in addition to counterpart reinforced concrete ones. The existing experimental data on the behavior of TRM materials (used as externally bonded reinforcement on masonry – or concrete – substrates) under elevated temperatures still remains scarce. This work aims at enriching the existing data on the influence of elevated temperatures on the TRM-to-masonry bond conditions. The applied TRM systems consisted of a cementitious mortar with normalweight (limestone) or lightweight (pumice) aggregates. Shear bond tests on single-lap/single-prism specimens were conducted after the exposure of the specimens at different temperature levels. All specimens (masonry prisms with ridge-faced fired clay bricks) were unilaterally furnished with a dry AR glass TRM comprising a single textile layer; TRM bond length was kept constant for all specimens tested. Tests were carried out by varying both the type of matrix employed (normalweight vs. lightweight) and the exposing temperature. The experimental results provide an insight on the effect of mortar type (comprising either normalweight or lightweight sand) on the TRM-to-masonry bond capacity as a function of the exposure temperature.