Ahmet Benli

Bingöl University · Civil Engineering

The increasing amount of tires manufactured annually worldwide has made waste tire management a major environmental concern. The goal of this work is to investigate the potential applications of waste tire aggregates (WTA) in a novel class of affordable, recycled composite materials. This study assesses the material behavior of rubberized 3D printe...

In many countries, the safe removal of the massive volume of waste glass has emerged as a major environmental priority. However, the manufacture of concrete pollutes the environment with greenhouse gasses and consumes vast amounts of natural resources. As a result, the construction industry has recently been paying more and more attention to reusin...

Sustainable self-compacting alkali-activated concrete (SCAAC) manufacturing is an environmentally friendly concrete that has a reduced carbon footprint than ordinary concrete. Alkaliactivated binders have been demonstrated in experiments to reduce concrete's energy consumption and carbon emissions by over 50%. This paper focuses on manufacturing bo...

The extensive mining of natural resources, such as sand, for the construction industry, poses a hazard to the environment. To preserve the environment, the researcher must thus take into account the use of industrial byproducts rather than natural materials. The use of sawdust (SD) produced by the wood industry in foam concretes (FC) has been in...

Below 5 °C, Portland cement (PC) experiences delayed hydration, slowing strength development, making it unsuitable for winter. Alkali-activated slag (AAS) emerges as a viable alternative with continuous hydration in low-temperature conditions. The effect of the activator nature on the performance of AAS cured at normal temperatures is well known, b...

Self-compacting geopolymer concrete is a new technology in the construction industry that prevents workers from compaction operations on materials with highly concentrated alkaline liquid. The assessment of the fresh, mechanical, durability and microstructural properties of slag/fly ash-based self-compacting geopolymer composites (SCGC) with silica...

Low-carbon binders or industrial waste can reduce or even eliminate the demand for Portland cement and other natural resources, which reduces environmental pollution in accordance with the principles of sustainable development. The assessment of the mechanical, durability and microstructural properties of slag/metakaolin based rubberized semi-light...

Slurry Infiltrated Fiber Concrete or Composite (SIFCOM) is a unique form of steel-fiber-reinforced cement composite that possesses exceptional toughness and superior mechanical properties like compressive, shear, tensile, and flexural strengths. New supplies of fine aggregate are required since the construction industry is experiencing natural sand...

Waste andesite sand (AS) is produced when cutting andesite stone and doing other stone dressing procedures. Problems with storage and environmental pollution may result from the disposal of AS. These issues might be resolved using AS in the manufacturing of alkali-activated composites. Pozzolanic powders are used extensively in the construction sec...

The objective of this investigation was to identify the effects of curing temperature, cement clinker aggregate, waste colemanite (WCM) and waste marble powder (WMP), as well as their interaction, on the early physico-mechanical properties, microstructure, and high-temperature resistance of geopolymer composites (GC). Ground granulated blast furnac...

Recently, the use of waste and novel natural resources in the concrete industry has drawn the attention of researchers from all around the world. Self-compacting mortars (SCMs) can be created using dunite powder (DP) as natural cementitious material and silica fume (SF), and provide the distinctive fresh properties required for SCMs. This study ana...

In order to solve the problem of low toughness and easy cracking of recycled aggregate concrete, steel fibers were incorporated to recycled fine aggregate concrete (RAC) to prepare a sustainable fiber-reinforced concrete. Steel fibers of various contents (20, 35, 50 and 65 kg/m3) and aspect ratios (l/d=40 and 55) were incorporated to the RAC, and t...

The study investigated the effect of two different cement types and expanded vermiculite powder (EVP) utilized as fine aggregate on the insulating and fire-resistance performance of lightweight mortars. To lower the density and heat conductivity of mortars, EVP was utilized as a 'full' replacement for river sand. Cements used were calcium aluminate...

Waste marble is a byproduct that is produced as a result of cutting and reshaping marble stone that is commonly used in the construction sector. From a sustainability perspective, waste marble can be a potential alternative to limestone sand with slightly reduced ecological footprint which is aligned with novel concepts, such as circularity of cons...

Researchers from all over the world have recently developed an interest in the utilization of waste materials in the concrete industry. Using silica fume (SF) and ground granulated blast furnace slag (S) to manufacture self-compacting mortars (SCMs) could be a step toward sustainable waste management and produce the unique fresh qualities needed fo...

Waste brick powder has enough pozzolanic characteristics to be employed as a supplemental cementing material in Portland cement-based concrete or as a precursor in the manufacture of alkali activated materials. This study was aimed to study the strength, thermal, microstructural and durability properties of ground blast furnace slag (GBFS) and wast...

To follow resource conservation, the production of optimized and sustainable structures through the use of insulating materials such as foam concrete has become a trend in construction industry. Although foam concrete has numerous benefits, the larger use of Portland cement in its mixture and its relatively low thermo-durability properties because...

The mechanistic and empirical design method of bituminous hot mixes, which is tried to be applied in our country, is allowed to estimate the dynamic stiffness modulus for second and third level projects. It is thought that examining the relationship between the dynamic stiffness module, which is one of the most important mechanical properties of bi...

As a typical cellular lightweight material, foam concrete is produced by mixing cement, water, aggregate and a suitable foaming agent and has a density usually below 1600 kg/m3. The large number of air spaces present in foam concrete ensures that the concrete has advantages such as lightweight, high fluidity during pouring, excellent thermal and so...

The brittleness of concrete can be overcome by fiber reinforcement that controls the crack mechanisms of concrete. Corrosion-related durability issues can be prevented by synthetic fibers (SFs), while macro synthetic fibers have proven to be particularly effective to provide ductility and toughness after cracks. This experimental study has been per...

An experimental study has been conducted to investigate the effect of recycled fine aggregates (RFA) treated as washed (W-RFA), less washed (L-RFA) and unwashed (U-RFA) on the transport, mechanical and durability characteristics of concrete exposed to freeze-thaw cycles and MgSO4. Totally three groups of concrete mixtures were produced by replacing...

Foam concrete refers to a type of low-density concrete that is commonly known to have favorable insulation and thermal performance due to its intentionally increased porosity. However, foam concrete is known to generally have a very low physico-mechanical and durability performance mainly due to its high porosity and the connectivity of the pores t...

Thermal energy storage (TES) by means of phase change materials (PCM) is of great concern to decrease heating and cooling loads. In building envelopes, one of the most efficient TES methods is integration of PCMs with construction materials for preventing temperature fluctuations by taking advantage of energy storage/release feature of PCMs. Aim of...

Foam concrete refers to a type of concrete with high porosity that can be produced with or without aggregate. Foam concrete has generally superior thermal insulation properties compared to conventional concrete. Despite its major thermal benefits, the high content of Portland cement, as well as its very high porosity, makes foam concrete prone to d...

An experimental study has been conducted to investigate the impact of recycled coarse aggregate (RCA) and fly ash (FA) on the transport, mechanical and durability properties of polypropylene fiber reinforced concretes. In this context, nine concrete mixtures with 25% FA as cement replacement (by wt.) and nine mixtures without FA were produced. RCA...

In this paper, an experimental study of the effects of natural and calcined zeolites and glass fibers on the mechanical , transport and accelerated ageing characteristics of cementitious composites exposed to wetting-drying and freeze-thaw cycles was presented. Three reference mixtures were fabricated with the inclusion of glass fibers (GF) at the...

This paper presents an experimental study of the effects of cement dosage and waste tire rubber as aggregate on the mechanical, transport and abrasion characteristics of foam concretes subjected to H2SO4 and freeze–thaw cycles. Foam concrete mixtures were made with two percentages 0, and 20 of silica fume (SF) as partial substitution of Portland ce...

The results of the impact of cement type and expanded vermiculite powder (EVP) on the thermal, mechanical characteristics and durability of lightweight mortars at high temperature and RSM modelling are presented in the paper. The lightweight mortars were fabricated by replacing fine aggregate with EVP in certain proportions. In the production of th...

This study investigated the hybrid effects of micro-steel (MS) and basalt fibers (BF) on the physico- mechanical properties and durability of mortars with and without silica fume (SF). Three groups of mixtures containing SF contents of 0%, 10% and 20% as cement replacement were produced with the inclusion of 0.25%, 0.5 and 0.75% steel fibers and 0....

This study implemented an experimental program to evaluate performance of high strength mortars with basalt fibers (BF) and silica fume (SF) at ambient and elevated temperatures. The effects of ambient and elevated temperatures and curing regimes on the physical, mechanical and durability properties of BF reinforced SF blended mortars were investig...

This study presents investigation on microstructural, mechanical, durability and thermal characteristics of hemp fibers (HFs) reinforced foam concrete with fly ash (FA) and Taguchi optimization approach. Three series of foam concretes mixtures were produced with foam contents of 50, 75 and 100 kg/m³. There is a reference mixture without HFs and FA....

An experimental program was performed to evaluate the impact of rice husk ash (RHA) as cement replacement and waste marble powder (WMP) as sand replacement on the microstructural, mechanical and transport properties of foamed concrete exposed to high temperature and freeze–thaw cycles. For this, Portland Cement (PC) was replaced by RHA at 10% and 2...

Recently, the usage of industrial wastes for concrete production has played an important role for developing environmentally friendly building materials. This work focused on investigating physico-mechanical, durability and thermal properties of basalt fibers (BF) reinforced foamed concrete containing waste marble powder (WMP) and ground granulated...

This study implemented an experimental program to evaluate the effects of kaolin (K) and calcined kaolin (CK) replacing cement partially on the durability and mechanical characteristics of self-compacting mortars (SCMs) at high temperature up to 900 °C and at room conditions. The cement was partially replaced by kaolin and calcined kaolin at the su...

Günümüzde inşaat alanında meydana gelen teknolojik gelişmeleri uygulamada aktif ve doğru bir şekilde kullanabilmek için ülkemizde 2007 yılında yürürlüğe giren ‘Deprem Bölgelerinde Yapılacak Binalar Hakkında Yönetmelik’ yerini 1 Ocak 2019 tarihi itibariyle ‘Türkiye Bina Deprem Yönetmeliği’ne bırakmıştır. Türkiye sınırları içerisinde yoğun olarak akt...

In Turkey with the published Flexible Pavements Projecting Guide 2008, the designer that offer opportunities in various design and material selection, empirical and analytical methods based on AASHTO (American Association of State Highway and Transportation Officials) 2002 Flexible Pavement Design Guide is being made the transition to the criteria....

Dünyada vazgeçilmez bir doğal kaynak olan suyun kullanabilir kısmı olan tatlı su kaynakları; nüfus artışı ve beraberinde ihtiyaç duyulan gıda ürünleri için tarımda daha fazla kullanımının yanı sıra şehirleşen sanayileşen bölgelerde ihtiyacı ve kirliliğinin artması ve iklim değişikliği etkisiyle erişimi ve kalitesinin olumsuz etkilemektedir. İnsan y...

Due to the fact that Bingöl province is at the intersection of the North Anatolian Fault and the Eastern Anatolian Fault, the seismicity of the region is important. In this study, probabilistic seismic hazard analyzes (PSHA) were conducted to cover the boundaries of Bingöl province. It occurred since 1900; the seismicity of the region was obtained...

The main purpose of this study was to investigate the compressive strength and microstructure characteristic of alkali-activated metakaolin cement (AAMC). In accordance with this purpose, besides the pure metakaolin activation five other mixtures were designed by substitution of different OPC ratios instead of metakaolin (MK) from 0 to 25 (5, 10, 1...

This experimental study was aimed to investigate the effect of elevated temperature on the mechanical properties of self-compacting mortars (SCMs) incorporating raw vermiculite (RVM) as partial sand replacement at the substitution rates of 10%, 20%, 30% and 40%. Within this scope, five SCMs series were prepared, including the control mix consisting...

This study reports the results of high temperature effects on the properties of steel fiber reinforced self-compacting concrete (SFRSCC) fabricated by replacing cement with ground pumice powder (GPP) as mineral additive at different substitution rates. The mixtures had the same amounts of steel fiber and the binding material with constant water to...

The technological developments in the construction field also made it easier to increase the building heights. Accordingly, the number of high buildings in the world and in our country is increasing steadily. In the design of high structures, lateral rigidity becomes more important than strength. In terms of ensuring comfort criteria, wind loads ar...

This paper investigates the effect of different dosages of fly ash (FA) and silica fume (SF) in self-compacting mortars (SCMs) on 7 the freeze-thaw (F-T) resistance as well as fresh and hardened properties. Nine mortar mixtures were prepared at 640 kg=cm 3 of unit weight 8 and water/binder (w/b) ratio between 0.43 and 0.50. All SCMs contained eithe...

This paper aims to investigate the strength properties and durability of self-compacting mortars (SCMs) produced from C class fly ash (FA) and silica fume (SF) as mineral admixtures. SCMs were produced from the binary mixes of FA and SF by replacing Portland cement with 10%, 20%, and 30% by weight of C class fly ash (FA) and 6%, 10%, 14% by weight...

Abstract. The various types of structural materials that are available in the construction industry nowadays make it necessary to predict their stress-strain behavior. Geopolymer are alternatives for ordinary Portland cement concrete that are made from pozzolans activation. Due to relatively new material, many mechanical specifications of geopolyme...

The various types of structural materials that are available in the construction industry nowadays make it necessary to predict their stress-strain behavior. Geopolymer are alternatives for ordinary Portland cement concrete that are made from pozzolans activation. Due to relatively new material, many mechanical specifications of geopolymer are stil...

The aim of this study is to investigate the effect of the bond strength of self-compacting mortars (SCMS) produced from ground pumice powder (GPP) as a mineral additive. In this scope, six series of mortars including control mix were prepared that consist of 7%, 12%, 17%, 22% and 27% of ground pumice powder by weight of cement. A total of 54 specim...

The aim of this study is to investigate the effect of the bond strength of self-compacting mortars (SCMS) produced from ground pumice powder (GPP) as a mineral additive. In this scope, six series of mortars including control mix were prepared that consist of 7%, 12%, 17%, 22% and 27% of ground pumice powder by weight of cement. A total of 54 specim...

This paper aims to investigate the effect of four different curing regimes namely; tap water curing (WC), wet sack curing (WSC), air curing (AC), and liquid paraffin wax curing (LPWC) and different curing times (3, 7, 28, 56 and 180 days) on the mechanical properties of self-compacting Mortars (SCMs). Binary mixtures of SCMs were prepared by replac...

This article introduces an adaptive network-based fuzzy inference system (ANFIS) model and two linear and nonlinear regression models to predict the compressive strength of geopolymer composites. Geopolymers are highly complex materials which involve many variables which make modeling its properties very difficult. There is no systematic approach i...

This paper presents the effect of aggregate type on high temperature resistance of self-compacting mortars (SCM) produced with normal and lightweight aggregates like expanded perlite and pumice. Silica fume (SF) and fly ash (FA) were used as mineral additives. Totally 13 different mixtures were designed according to the aggregate rates. Mini slump...

The analyses of infill frame structures are generally done ignoring the presence of brick masonry in the analytical models but it is a prevalent mistake. Behaviors of such buildings vary significantly during the earthquake events. The lateral resisting capacity of infill wall actually restricts the column only up to the wall height but above the wa...

Aluminosilicate type materials can be activated in alkaline environment and can produce geopolymer cements with low environmental impacts. Geopolymers are believed to provide good fire resistance so the effects of elevated temperatures on mechanical and microstructural propertiesofpumice based geopolymer were investigatedinthis study. Pumice based...

Geopolymers are highly complex materials which involve many variables and make for which modelling the properties is very difficult. There is no systematic approach in mix design for geopolymers. Since the amounts of silicamodulus, Na2O content, w/b ratios and curing time have a great influence on the compressive strength, an ANN (artificial neural...

Bu çalışmada, farklı oranlarda uçucu kül ve silis dumanı ikameli kendiliğinden yerleşen beton (KYB) karışımlarına ait basınç, çekme dayanımı ve elastisite modülü değerleri arasındaki ilişki araştırılmıştır. KYB karışımları için çökme-yayılma, t500, L-kutusu ve elek ayrışma işlenebilirlik deneyleri gerçekleştirilmiştir. Üretilen numuneler kalıptan a...

This paper reports an investigation on the influence of curing methods and cement types on the water absorption characteristics of Self-Compacting Concrete (SCC). Two types of SCC (with 10% Silica Fume (SF) and 30% Fly Ash (FA)) and Portland cement (PC) concrete specimens were prepared and cured under three different curing conditions (water, seale...

Deprem bölgelerindeki çok sık donatılı yapılarda kullanmak amacıyla 1980'li yılların sonunda Japonya'da (Ozawa v.d., 1989) geliştirilen kendiliğinden yerleşen beton (KYB), mükemmel şekil değiştirebilen, segregasyona karşı yüksek dirence sahip olan ve herhangi bir sıkıştırma işlemi olmaksızın kolaylıkla yerleşebilen bir beton olarak tanımlanmaktadır...

In this study, silica fume (SF) and fly ash (FA) were added separately as partial replacement of cement from 5% to 20% and from 25% to 40% at 5% intervals, respectively. In case, eight types of self-compacting concrete (SCC) were designed, in comparison with normal concrete (NC). Mechanical properties of NC and various SCC mixtures such as, compres...

In this study, twelve beams, which have 200*300*2000 mm dimensions, are subjected to four points bending and tested. To compare with the experimental results, beam speciments are analyzed for bond of reinforcement using finite element ANSYS programme. Each beam was designed to include two bars in tension, spliced at the center of the span. The spli...

Twelve full-scale beam specimens (2000 × 300 × 200 mm) were tested in positive bending with the loading system designed to determine the effect of self-compacting concrete (SCC) and the diameter of reinforcement on bond-slip characteristics of tension lap-slices. The specimens of lap-splice series were tested with lap-spliced bars centred on the mi...