Tsen Research Articles

Dezenfekte ürünlerinin laminat parkenin çizilme direnci, yüzey pürüzlülüğü ve toplam renk değişimine etkisi

kisine karşı görsel bozunma, çizilme direnci, yüzey pürüzlülüğü ve renk değişimlerinin belirlenmesidir. Bunun için piyasadan temin edilen laminat parke yüzeylerine TS EN 12720:2009+A1 esaslarına göre iki farklı etki süresinde (16 ve 24 saat) el ve yüzey dezenfektanları ile kolonya uygulanmıştır. Laminat parkelerin görsel muayenesi TS EN 12720, çizilme direnci TS EN 15186, yüzey pürüzlülüğü TS 6956 EN ISO 4287/A1 ve toplam renk değişimi ASTM D2244 esaslarına göre belirlenmiştir. Çalışma sonuçlarına göre parke yüzeylerinde gözle algılanabilen renk bozulması, parlaklık ve renk değişimi, kabarma, şişme gibi kusurlar tespit edilmemiştir. Genel olarak yüzey pürüzlülüğü ve toplam renk değişimi değerleri azalırken tüm dezenfekte ürünleri tüm etki sürelerinde çizilme direncini azaltmıştır.

The effect of heat treatment method and process temperature on the glossiness of polyurethane varnishes applied to wood material surfaces

Bu çalışmada, farklı yöntemlerle ve farklı sıcaklık seviyelerinde ısıl işlemli ağaç malzeme yüzeylerine uygulanan poliüretan verniklerin parlaklık özellikleri incelenmiştir. Kayın (Fagus sylvatica L.) ve sarıçam (Pinus silvestris L.) odunu örnekleri üç farklı yöntem (ThermoWood, yağlı işlem ve sıcak hava) ve üç farklı sıcaklık (170 °C, 190 °C ve 210 °C) uygulanarak ısıl işleme tabi tutulmuştur. Daha sonra örnek yüzeyleri endüstriyel uygulamalara göre poliüretan vernik ile kaplanmıştır. Parlaklık ölçümleri TS EN ISO 2813 esaslarına uyularak gerçekleştirilmiştir. Verniksiz örnekler için, yağlı işlem yöntemi ile ısıl işlem görmüş örneklerde daha düşük parlaklık değerleri belirlenmiştir. ThermoWood ve sıcak hava yöntemleri ile muamele edilmiş örneklerde parlaklık değerleri benzer bulunmuş ve bu örneklerde, düşük sıcaklıktaki (170 °C) ısıl işlem sonrası parlaklıklar kontrol örneklere göre artmıştır. Vernikli örneklerde ise ısıl işlem yönteminin etkisi parlaklık üzerinde önemsiz bulunmuştur. Diğer taraftan, hem verniksiz hem de vernik uygulanmış örneklerde ısıl işlem sıcaklığı artışına bağlı olarak yüzey parlaklık değerleri azalmıştır.

Muttalip green clay and its ultraviolet and infrared absorption and reflection

AbstractThe search for sufficiently high-quality clays for use in the tile industry represents a significant challenge. This study aimed to prepare Muttalip green clay tiles with flexural strengths adhering to the TS EN 1304:2016 standard. Muttalip green clay was subjected to sieving, vacuum pressed, dried and then baked to obtain galette tiles. The tiles were analysed subsequently using optical techniques, including X-ray diffraction, X-ray fluorescence spectrometry and field-emission scanning electron microscopy. The influence of various firing temperatures (900, 950 and 1000°C) on the flexural strength of the tiles was also investigated. The tiles obtained at 950°C exhibited a maximum flexural strength of 153.91 kg cm–2. Fourier-transform infrared spectroscopy revealed that the tiles reflect ultraviolet A radiation and absorb infrared radiation. Muttalip green clay is a suitable material for preparing tiles for roofing applications.

SPSS ve ANFİS ile Farklı Hafif Agregaların Kompozit Harç Üretiminde Teknik Değerlendirilmesi

In today's construction industry, the production and use of the next generationof materials is becoming increasingly common. These materials; It isused in the formofpaper block handmen,plate products and composite mortars. Especially in recent years, the development of lightweight, flexible, outdoor resistant lightweight aggregate mortar products within the scope of energy efficient products in buildings has also become a necessity. Therefore, in this article, a series of plaster pilgrim samples are prepared in composite form with polymer component by classifying light aggregates of different origin in the size range of 0.5-1 mm and 1-2 mm and using them as the main raw material. In addition, in order to make technical comparison in experimental studies, control mortar samples, which are called traditional mortar used in exterior applications of existing buildings in the construction sector, are also designed. Within the scope of the study, all mortar samples were analyzed within the scope of TS EN 998-1 standard and other related standards in force today and technical findings were examined in detail in the article. In addition, the parameters affecting the result were determined with SPSS (V26) to determine the effectiveness of the experiment input values. Data were trained with ANFIS using parameters affecting the result and results were checked with test data.

A RESEARCH ON THE EVALUATION OF THERMAL COMFORT CONDITIONS OF OPERATING ROOM EMPLOYEES

İş sağlığı ve güvenliği; çalışma ortamında meydana gelebilecek kazaların önlenmesini, mesleki hastalıklara karşı maruziyetlerin en aza indirilmesini hedefleyen, yasalarla desteklenen bir bilim dalıdır. İş hijyeni; çalışanların çalışma ortamlarındaki maruz kaldıkları fiziksel, kimyasal, ergonomik ve biyolojik risklerin tespit edilmesini, ölçülmesini ve analiz edilmesini kapsamaktadır. Çalışma ortamlarında bulunan maruziyetlerin insan sağlığını etkileyecek boyutta olup olmadığı, birtakım standartlarla ölçüm ve analizler yapılarak tespit edilir. Fiziksel riskler grubunun en önemli etmenlerinden biri termal konfordur. Termal konforun dengeli olmadığı çalışma ortamlarında sıcak veya soğuk maruziyetinden kaynaklı hastalıklar meydana gelebilir, dikkatin yapılan işe verilememesine bağlı iş kazası riski artar. Çalışma ortamında termal konforun değerlendirilmesi için TS EN ISO 7730 standardı kullanılarak ölçümler gerçekleştirilir. Bu çalışmada, çalışanların soğuk olarak nitelendirdikleri ameliyathane odalarında termal konfor ölçümleri gerçekleştirilmiştir. Bu çalışmanın amacı; ameliyathane çalışanlarında termal konfor açısından soğuk stres maruziyetinin olup olmadığını tespit etmektir. Ölçümler bir araştırma hastanesinin 12 farklı ameliyathane odasında gerçekleştirilmiştir. Araştırmanın ölçüm sonuçları; PMV indekslerinin sınır değerler içerisinde kaldığını, PPD indeksinin ise en yüksek %34,11 olarak hesaplandığını göstermektedir. Elde edilen bulgular çalışmanın yapıldığı ameliyathane odalarında soğuk stres maruziyetinin olmadığını göstermektedir.

Effect of fractional distillation pretreatment on fuel quality of plastic waste pyrolytic oils

Today, the amount of plastic waste is increasing due to the use of more plastic. Since these wastes are composed of complex chemical compounds, when they are stored, they are difficult to degrade in the air, water and soil environment and pose a serious environmental problem. One of the disposal methods of plastic waste is pyrolysis, where valuable and useful products are obtained. The pyrolytic oil products formed in the pyrolysis process can also be evaluated with their rich hydrocarbon compositions in the production of chemicals, energy production and fuel production. However, in order to evaluate this product in various fields, it would be good to improve the product quality with some pre-processes. In this study, the quality of HDPE and LDPE type pyrolytic oils was improved by fractional distillation. Distillation fractions usability as fuel was examined. By measuring the quality parameters of the bottom and distilled fraction obtained from the fraction process, its usability as gasoline (bottoms fraction) and fuel oil (distillate fraction) were evaluated according to TS EN 2177 and TS EN 228 standards, respectively. LDPE distillation efficiencies are higher than HDPE distillation efficiencies as LDPE pyrolytic oils are distilled more easily. The sulfur content of the distilled fractions obtained after distillation fell below limit values ​​and showed a positive situation in terms of the use of distilled products as gasoline. HDPE300, HDPE400, HDPE500 and HDPE600 distillate fractions provided the standard / limit values ​​given in TS EN 228 standards in terms of all parameters considered in the study. Similarly, in terms of all quality parameters considered, HDPE300, HDPE400 and LDPE500, LDPE600 and LDPE700 bottom fractions are compatible with the standard / limit values ​​given in TS 2177 standards.

Determination of epoxy resin usability for mass production of reinforced laminated veneer lumber

This study is part of a comprehensive study on the industrial production of reinforced laminated wood composites. The main aim of the study is to determine the production parameters of reinforced laminated wood composite board under an optimal production cycle time under temperature and pressure, using epoxy resin cured at room temperature for 24 h. For this purpose, 1.2 mm thick Samsun Poplar (Populus Deltoides I-77/51) veneer layers, three different pressing cycle times (15, 20, and 25 min), three different temperatures (100°C, 120°C, and 140°C), and three different amounts of adhesive (100, 150, and 200 g/m²) were used also 200 g/m² density twill woven glass–carbon fiber fabric was used as the reinforcement layer. In order to determine the production quality of reinforced laminated wood composite boards, the adhesion strength between the reinforcement layer and the wood veneer layer was determined according to TS EN 3969 314-1. Considering the adhesion strengths in terms of production parameters, the best results were observed at 100°C press temperature, 20 min press cycle time, 200 g/m² adhesive amount, and the use of glass fiber woven fabrics for reinforcement. Under these conditions, the best adhesion strength was found to be 4.17 N/mm². When the samples were examined, it was seen that almost all of the failures occurred as a result of the fracture in the wood layer. This indicates that sufficient adhesion can be achieved between the reinforcement layer and the wood layer.

Investigation of Mechanical Behavior of Pre-Heat Treated Wooden Beams in Different Climate Conditions

In this study, the behavior of tannin-modified and pre-heat treated wooden beams in different climatic conditions were determined. For this purpose; Samples prepared according to TS EN 386 standards from Scots pine (Pinus sylvestris L.), oak (Quercus petraea L.) and chestnut (Castanea sativa Mill.) woods were impregnated with acorn tannin and pre-heated for 2 hours at 150°C and 160°C. After the samples were conditioned at 20°C temperature and 65% RH, 40°C temperature and 35% RH, 10°C temperature and 50% RH, bending strength tests according to TS 2474 and modulus of elasticity in bending according to TS 2478 were applied. As a result; At the level of wood species-process type interaction, the highest increase in bending strength was determined as 7.6% in tannin modified scotch pine samples at 150ºC compared to the control samples. Accordingly, it can be suggested to use Scotch pine wood in the manufacture of lightly loaded wooden house columns and beams and other building elements.

Use of sheep slaughterhouse-derived struvite in the production of environmentally sustainable cement and fire-resistant wooden structures

Utilization of the struvite recovered from sheep slaughterhouse wastewater was explored for the first time in sustainable cement production and fire-resistant wooden structure design. Sheep abattoir-originated struvite precipitation process was optimized using a chemical combination of MgCl2.6H2O + NaH2PO4.2H2O, a molar ratio of Mg2+:NH4+-N:PO43--P = 1.2:1:1, a reaction pH of 9.0, an initial ammonium concentration of 240 mg NH4+-N/L, and a reaction time of 15 min. Based on both American (ASTM C305-14) and Turkish (TS EN 196–1) standard methods, struvite was used in proportions of 10–30% by weight for struvite-substituted cement production. The best compressive strength values were achieved with 85.5% cement clinker (C), 4.5% gypsum (G), and 10% struvite (S) for the struvite-replaced cement (C85.5G4.5S10). According to the US EPA's greenhouse gas protocol, it was estimated that producing 10% struvite-substituted cement would result in 9.97% lower absolute CO2 emissions than producing 100% Portland cement. It was also found that slaughterhouse-derived struvite could compete with commercial water-based fire retardant solution and exhibit acceptable flame resistance behavior for wooden structures. The versatility of sheep abattoir-oriented struvite was confirmed as an environmentally sustainable and clean by-product for different structural uses.

Research on the Production of Parchment from Turkey Skin and its Decorative Use

In this study, parchment was made of waste turkey skin and some tests were done. These tests were: Determination of thickness (TS 4117 EN ISO 2589), Determination of tensile strength and elongation (TS EN ISO 3376), Determination of tear load - Part 2: (Double edge tear) (TS 4118-2 EN ISO 3377-2), Leather - of distension and strength of grain (TS 4137 EN ISO 3379), Color fastness to water spotting (TS EN ISO 15700). Due to the low strength properties of turkey skin, a different usage area was tried to be created by making a decorative flower design. In this research, it has been tried to show how a waste material can be transformed into a product with a very high added value.

Application of L-Ascorbic Acid as an Antioxidative Colorment in Leather Finishing

In this study, chrome tanned bovine crust leathers were dyed white during finishing process. Experiments with 1%, 2%, 3%, 4% and 5% L-ascorbic acid addition were performed on the finishing layer of the finishing application. L-ascorbic acid was not added to the control group and processed according to the standard method. After these processes, color measurement analyzes were performed on Konica Minolta CM 3600d spectrophotometer. In order to investigate the effects of L-ascorbic acid on other performance properties of leather, light fastness test according to TS 1008 EN ISO 105-B02 (2001 TS EN ISO 11640 2001) and dry rub fastness test according to standard method were performed. The results of the study were statistically evaluated according to the NCSS (Number Cruncher Statistical System) method. As a result of the research, it was observed that L-ascorbic acid gave a pearly pink color to the leathers. It was found that the dry rubbing fastness of the leathers treated with L-ascorbic acid improved. In the light fastness tests, the results of the experimental group leathers were recorded better by the blue scale.

Optimum design of a vaulted roof steel structure using grey wolf and backtracking search optimization algorithms through application programming interface

In present study, structural formation identification of a vaulted roof steel structure is taken as optimization problem. The cost of a steel structure is directly related to the weight of the structure. Weight minimization of the vaulted roof steel structure is considered as objective function of the design problem. The design problem is intended to be as realistic as possible. Wind loads and snow loads are calculated in direction of TS EN 1991-1-4 and TS EN1991-1-3practice code specifications, respectively. And dead loads reobtained in terms of gravity. The structural design constraints of the optimization problem are determined according to American Institute of Steel Construction-Allowable Stress Design (AISC-ASD). In the design, W-shaped steel profile sections to be selected for assigning to the structural elements are considered as discrete design variables. Grey Wolf Optimizer (GWO) and Backtracking Search Optimization (BSO) algorithms that are relatively recent metaheuristic algorithms are utilized as optimizer tools to obtain the minimum weighted structural design. The vaulted roof steel structure is initially modeled in a finite element packaged software (ANSYS Workbench v18.1). Then, using the application programming interface of the software, integration of finite element model with GWO and BSO optimization algorithms encoded in Microsoft Visual Basic for Application (MS VBA v7) programming language is provided. Thus, the performances of two new generation optimization algorithms in design optimization of a vaulted roof steel structure are compared and the benefits of the application programming interface are demonstrated.

The Comparison of the Properties of Geopolymer Paste and Ordinary Portland Cement Mortar Produced Using Polycarboxylate Based Admixture

Chemical admixtures are generally used in ready mixed concrete production to improve and enhance the concrete properties. Polycarboxylate based superplasticizers are classified as third generation plasticizing admixtures which increase fluidity and workability without decreasing compressive strength. Geopolymers having many superior properties are alternative materials to ordinary Portland cement concrete. Geopolymers are environmentally friendly and sustainable materials because they can be synthesized from waste materials such as fly ash. In this experimental study, geopolymer pastes were produced by using fly ash, 10 M sodium hydroxide, sodium silicate solution and plasticizer. Cement mortars were produced according to TS EN 196-1 standard. Polycarboxylate based plasticizers synthesized at laboratory conditions were used at 1% by weight in both ordinary Portland cement mortar and geopolymer paste. Geopolymer samples were aged for 7 and 28 days at laboratory conditions while cement mortars were aged in water bath. The fluidity values of fresh mixtures were determined. The flexural strength and compressive strength tests were conducted at the ages of 7 and 28 days. The plasticizers had positive effects on cement mortars but unfavorable results on geopolymer. The use of plasticizer increased the fluidity and the strength values in mortars, on the contrary, admixtures caused decrease in the values of geopolymer samples. The highest compressive strength was obtained as 38.3 MPa for mortar sample aged for 28 days and was 15.3 MPa for geopolymer samples.

Classification of Stockwell Transform Based Power Quality Disturbance with Support Vector Machine and Artificial Neural Networks

The detection and classification of power quality events that disturb the voltage and/or current waveforms in the electrical power distribution networks is very important to generate electrical energy and to deliver this energy to the end-user equipment at an acceptable voltage. Various property extraction methods are used to determine the type of disturbances in the electrical signal. In this study, seven power distortions including voltage sag, voltage swell, voltage harmonics, voltage sag with harmonics, voltage swell with harmonics, flicker, transient signals and pure sine as a reference signal is used. Synthetic data are produced in MATLAB using parametric equations based on TS EN 50160 standard. Four kinds of feature extraction as frequency-amplitude, time-amplitude, geometric mean and standard deviation is made with Stockwell Transform (ST), which is one of the methods used for the feature extraction of the determined GKB. Detection of voltage distortions is interpreted through these properties. 640 simulation data is entered into the classifier by using Support Vector Machines (SVM) and Artificial Neural Networks (ANN) and their classification performance is compared.

Optimization of welding application parameters of thin sheet blocks used in the new-generation ship hull

The main material of merchant ships is steel. Generally, block sheets used in forming a ship hull are between 7 and 12 mm. On a 60 m ship, the hull consists of approximately 25–35 mega-blocks and 45–60 blocks. Welding operations cause expansion and shrinkage on the part due to regional temperature differences. The purpose of this study is determining the optimum welding parameter of panels with 48 × 1200 cm dimensions and 5 mm thickness. Because the thickness of the sheet metal used is very thin, the blocks to be welded are very large and the mega-blocks formed by welding are used in large numbers and include uncertainties such as optimal parameters in the process application and mechanical behavior on the weld. To reduce the number of experiments within the scope of the study, welding application conditions were determined by using Taguchi experimental design (L9). In the determined parameters, submerged arc welding was carried out on the panels in a horizontal position. Taking 10 × 48 cm sections as head–middle–end from each combined panel, visual control and radiographic testing (ISO 5580) was performed. Tensile (TS EN ISO 4136) and notch-impact (TS EN ISO 9016) mechanical tests were also conducted. By conducting statistical analysis (analysis of variance) of the selected parameters used in the Taguchi experimental design, percentage effects of each parameter on yield strength, tensile strength and notch-impact tests were obtained. The impact percentage of the highest current was determined; the results were 50.24% for yield strength, 51.43% for tensile strength and 57.53% for notched-impact test results. Data means were checked with design of experiment analysis. The best welding results were obtained at parameters of 650 A, 32 V and 150 cm/min.

Wood Dust in Furniture Manufacturing: An Exposure Determinant Study in Ağrı City

Wood dust exposed during furniture manufacturing processes causes a variety of health problems. The aim of this study is to determine the respirable and inhalable dust exposure of the employees in small-scale furniture workshops located in Ağrı Organised Industrial Zone. For this purpose, the amount of dust exposure in the working environment was measured and the results were compared with the limit values in national and international legislation. Five furniture carpentry workshops in Ağrı Industrial Zone employing less than 10 workers constituted the universe of the study. A total of 22 people work in five workplaces. A total of 15 employees, 3 from each workshop, participated in the study. In this study, "MDHS 14/3: Gravimetric analysis and sampling method of respirable and inhalable dusts" was used for dust sampling. In the study, 30 respirable dust samples and 5 inhalable(total) dust samples were obtanied at 5 workplaces. Based on these measurement results, a daily TWA was calculated for each employee according to the TS EN 689 standard. The results were compared with the values in the national and international standards. It was concluded that the exposed values for dust concentration obtained from only one workplace were below the national and international limit values. It has been observed that a large part of both respirable and inhalable dust exposure values in workplaces exceeded the limit values. Practices and regulations such as tax reductions, incentives and projects that will contribute to the fight against dust in small-scale enterprises should be made.

Thermodynamic Analysis of Industrial Cooling Systems with the Usage of Different Types of Evaporators: Experimental Study

Energy efficiency and the amount of refrigerant in heat exchangers used in cooling systems has recently been an important research subject. In this study, in order to compare and analyze different types of evaporators, industrial refrigerators were designed and in this context, test setups in accordance with TS EN ISO 23953-2 standard were produced. R290 (propane) was used as the refrigerant in the designed system. During the experiment, temperature-pressure measurements were taken at a certain point in the cooling system equipment of the products, which were cooled every minute, and test data were recorded. As a result of the data obtained from the experimental results, while the temperature difference of the air entering and leaving the evaporators was 6.797 ℃ in the first system using ½” tube diameter evaporator, it was calculated as 7.052 ℃ in the corrugated and hydrophilic coated second system using 3/8” tube diameter. In the experimental setups, the energy consumed in the first and second systems and the masses of R-290 refrigerant were measured as 24.64 kWh, 23.39 kWh and 700 grams, 430 grams, respectively. Consequently, it was calculated that the second system was 5.073% and 38.57% more efficient in terms of energy efficiency and the refrigerant mass used. Coefficient of performance values for the first and second systems were found as 2.807 and 3.013, respectively.

Development of heavyweight aggregate via in-situ growth of high density ceramics using red mud

The recycling and large stockpile of red mud, lead to a series of social and environmental concerns as bulk utilization of red mud is the demand of the modern age. Hence we develop a process for the bulk utilization of red mud into heavyweight aggregate. The development of heavyweight aggregate (HWA) using red mud, barium sulfate, and activated charcoal powder as a reducing agent has been used in the present investigation. We have observed an in-situ growth of different high-density ceramics such as barium iron oxide, barium titanate (BaTiO3), and barium iron titanium silicate (Bafertisite), etc., which may be responsible for the high strength and density. HWA and raw material have been characterized using different characterization techniques such as XRD, FE-SEM, TGA, and FT-IR, etc. A thermogravimetric analysis confirmed the removal of a different low molecular component during sintering from 500 to 1000℃. HWA is also characterized by mechanical properties such as water absorption, density, crushing, impact, and abrasion value. Whereas, we achieved maximum density upto 4.1 g/cm3 at an elevated temperature of 1350 ℃. These aggregates possessed lower water absorption, crushing, impact, and abrasion value upto 0.9, 18, 11.5, and 18.9 percent, respectively, compared to natural aggregates. The developed aggregate also fulfills the requirement of TS EN 206–1 (2002) and ASTM C637.

3E Analysis of the Effect of Different Type of Fans on Cooling Performance Applied to an Industrial Deep Freezer

In this study, two different industrial refrigerators were designed, manufactured and tested to analyze the impact of different types of fans (Type 1 and Type 2) used in industrial cooling systems on the performance of the cooling system. In order to test the fan performance and airflow effects, two axial fan configurations with different structures and different motor technology (EC and shaded-pole induction) were tested in two separate industrial refrigerator test rooms in accordance with TS EN ISO 23953-2 standards. R290 (Propane) was used as a refrigerant in the systems. The average temperature and relative humidity values of the environment where the experiment was conducted were measured as 25 °C and 60 % (Class 3), respectively. During the experiments, the total of 51.71 kWh energy was consumed in system 1, while the total of 54.22 kWh energy was consumed in system 2 and the difference between the energy consumption of the two systems was calculated as 4.85%. The average temperatures of the inlet and outlet of the evaporator of the system 1 and 2 were -21.57 °C, -18.97 °C and -23.43 °C, -20.94 °C, respectively. The average refrigerant temperatures for the system 1 and 2 were calculated as -24.65 °C, -26.44 °C, respectively. While the average coefficient of performance value of the type 1 system was 1.74, it was calculated as 1.54 for the type 2 cooling system. The average second-law efficiencies for the two cooling systems were calculated as 30.85 % and 29.81 %, respectively. In addition, the environmental economy analysis was carried out using the amount of CO2 that was prevented from emitting and the CO2 emission price calculated accordingly.

Pozzolanic Effect on the Hydration Heat of Cements Incorporating Fly Ash, Obsidian, and Slag Additives

Made up of an engineered mix of ordinary Portland cement (OPC) with artificial pozzolans such as trass, fly ash, and slag, the blended cements have been intensely employed within cementitious materials. The main reasons behind this intensive use can be clarified by enhanced workability/strength, the high resistance to chloride/sulfate, reduced permeability/alkali-silica reaction, and a drop in the heat generated by cement’s hydration. The use of cementitious blends within concrete not only offers durable products but also cuts climate impact by energy saving and falling CO2 emissions. This study presents pozzolanic effect on the hydration heat of cements incorporating fly ash, obsidian, and slag additives. The blended cements were manufactured by three different replacement ratios of 20%, 30%, and 50%. The change in the hydration heat of obsidian-, fly ash-, and slag-based cements was observed by several Turkish standards (TS EN 196-8 and TS EN 196-9). Mortars were used for determining the uniaxial strengths of obsidian-, fly ash-, and slag-based cements. The results show that cement’s hydration heat decreases as the rate of additives (e.g., obsidian) increases from 20% to 50%. The cement’s fineness greatly affects its hydration heat. Increasing the refinement of pozzolanic material to a certain level (30%) leads to an increase in the hydration temperature. After reaching this level, there is no clear relation between the fineness and the replacement rate of pozzolans. As a result, the findings of this work will provide a good understanding of artificial pozzolans on performance and quality of obsidian-, fly ash-, and slag-based cements.