Eethar Thanon Dawood

Northern Technical University · Technical engineering College Building & Construction Eng.

Locally, conventional concrete is still created utilizing river sand and crushed stone as filer materials. The massive quarry dust by-product remain untapped in the production of concrete. The coal-fired power station produce significant quantities of Type F fly ash. Self-compacting concrete (SCC) provides many advantages for creating high-quality...

In the presented work, eco-friendly High-Performance Lightweight Aggregate Concretes (HPLWAC) are produced by including both tire waste rubber aggregate as volume replacement to aggregate and reinforced with steel fibers recovered from scrap tire waste after preparation. Using recycled materials from local tire waste in the building sector is one w...

Green reactive powder concrete is a new type of concrete that falls into the category of ultra-high performance concrete that contains a high proportion of cementitious materials (a considerable amount of cement replacement by waste materials), as well as fine sand, quartz powder, superplasticizers, and fibers. The major goal of this research is to...

Recently, awareness has increased about the use of nanomaterials in concrete production. The inclusion of such materials into cementitious matrices can improve its properties overall. Reactive powder concrete is one of the types of concrete that is distinguished by its superior properties. Such concrete requires using a high amount of cement. The l...

This study combines two types of waste materials to achieve sustainable lightweight concrete (LWC) including agricultural and industrial wastes that hold high potential to reduce global environmental pollution. A novel application of 35% treated date seed (DS) wastes as partially replaced by volume to natural coarse aggregate in producing sustainab...

The objective of this study is to explore the feasibility of developing environmentally friendly green roller-compacted concrete (RCC) by utilizing locally available materials. The research investigates the behavior of RCC properties when different amounts of solid waste materials (brick powder, glass powder, and steel slag) are added as substitute...

Locally, conventional concrete is still created utilizing river sand and crushed stone as filer materials. The massive quarry dust by-product remain untapped in the production of concrete. The coal-fired power station produce significant quantities of Type F fly ash. Self-compacting concrete (SCC) provides many advantages for creating high-quality...

This paper aims to find out the possibility of development Green Roller-Compacted Concrete (RCC) by using local materials and study the behavior of RCC properties by adding different amounts of solid waste (Polyethylene Terephthalate (PET) as volume fraction of cement content). To achieve this aims; Three laboratory tests were applied; Density, Com...

Green mortar is a mortar that is environmentally friendly and that uses waste materials or by-products to reduce CO2 emissions that are produced during cement production. This study aims to produce a new type of green mortar by using ternary cement mixes with acceptable fresh and hardened properties. The materials used were metakaolin (10-20%), sla...

The accumulation of massive waste has impacted human health and the city's appearance. As a result, there was a need to reduce waste by using by-products from industrial waste to replace cement, such as limestone, fly ash, silica fume, steel slag, and other minerals known as supplementary cementitious materials are produced environmentally and sust...

Many studies are currently being conducted with the goal of reducing construction waste and thus lowering the risk of pollution. Through this research, a study was conducted on the effect of nanomaterial and ceramic waste powder (CWP) on the flowability and rheological of green self-compacting mortar. Nanosilica with particle size of (0.1 µm) and c...

The new production ofReactive Powder Concrete (RPC) has become an interesting topic due to the dramatic properties that such materials can give. Thus, this study has been prepared to observe the properties of RPC mixes reinforced with micro steel fibers (MSF) by the order of 2% volumetric fractions (vol.). As well, hybrid fibers from MSF, sisal fib...

Ferrocement is a common type of reinforced mortar that can be produced in sections of relatively small thickness. The production of ferrocement as a sustainable building material with good mechanical properties has resulted in many advantages like; saving cement, reducing the consumption of raw materials, reducing the agglomeration of waste materia...

This paper observes the possibility of compressive strength enhancement of the modified mortar by using (SBR) latex as a replacement material of water by weight. (SBR) one of the polymeric materials used recently for producing modified mortar due to the flexibility and fluidity properties. Two main stages were approached for preparing the mixes, ad...

The use of mortar has diverse uses due to the advancement in the use of chemical and mineral admixtures with cement matrix mixes. Different mortar mixes have been prepared using 20, 25, 30, 35 and 40 % for the mixes M1-M5. Then the mixes "M6, M7, M8" have been prepared by the combination of calcined clay (CC) and fly ash (FA) in different amounts,...

This paper describes a study conducted to assess Slag's influence on the development of mortar strength and optimum use of mortar slag (S) and the best-substituted ratio in sustainable mortar production. Cement was in part replaced with four percentages (30%, 35%, 40% and 45%) of Slag by weight and add superplasticizer (SP.). As a reference mortar,...

This paper presents results from a laboratory study showing the influence of sand type and sand grain size on the properties of the cement mortars. The experimental study includes the rheological and mechanical properties of cement mortar made with two types of sand (Kanhash sand and Khazer sand) with a three maximum size of aggregate (2.36mm, 1.18...

This paper investigates the effect of lime stone powder as a partial replacement of sand in cement mortar; on the other hand, this research shows the possibility of using limestone powder as a recycled aggregate. Extensive amount of lime stone powder in our city Mosul, and this can affect the ecological impact of the city, also, the lime stone powd...

Green mortar (GM) is a mortar that at least one of its components uses waste materials or materials that do not cause environmental destruction throughout their production This research aims to design a mortar with the highest possible cement and sand substitutions with acceptable fresh and hardened properties. The experimental work was conduct in...

The use of supplementary cementitious materials like crushed glass, steel slag, and silica fume at an acceptable level has resulted in many advantages such as reduction of the waste solid materials and production of eco-friendly material. Moreover, the inclusion of fibers for reinforcing cementitious matrix can improve its properties overall. There...

The design of sustainable and economic concrete mixes can be considered as a potential challenge for building’s engineers and experts. Thus, this paper presents the possibility of designing such concrete mixes using low to moderate amounts of cement and using waste glass and steel slag powders. The use of three groups from concrete mixes have been...

Pozzolanic materials are used extensively at the present time due to their availability in large quantities, especially materials that are considered waste from construction works and industrial waste. In this research, various pozzolanic materials were used, such as glass powder; ceramic powder, and brick powder, seven mortar mixes (M, M1, M2, M3,...

The utilization of fly ash to produce green mortar (GM) is a successful approach to improve sustainability, decrease costs, and enhance some aspects of durability. However, green mortar with fly ash partially replacing the cement by weight often experiences low compressive strength at the early ages, which minimizes the material applications. Sever...

The selection of the building material for economic and sustainable construction requires understanding the material behavior. Therefore, this research studied the behavior of eco-friendly high-performance mortar(HPM) that is used for producing ferrocement. The experimental program has been divided into four phases. The first phase involved the inv...

A quaternary supplementary cementitious materials as partial replacement of ordinary Portland cement decreases CO 2 emission. This paper has investigated the properties of mortars made from different quaternary blends of wood ash, steel slag powder and glass powder with ordinary Portland cement at different replacement levels of 0, 24, 25, and 30%...

Self-compacting concrete (SCC) has many properties comparing to conventional concrete and represents a good choice towards sustainability. The use of different recycled materials contributes to seize the negative impact of huge amount of waste on the ecosystem. In this study, locally available materials have been used as partially cement replacemen...

Heavy weight concrete (HWC) is one of the most used artificial materials for the embodiment of special infrastructures such as nuclear power, medical, nuclear science and industrial facilities. The review highlights the main aspects of HWC covering the general concept of radiation physics, fundamental of geometrical design for radiation attenuation...

This work is an experimental investigation about the properties of sand-powder adhesive subjected to high temperature. Thus, three main mixtures were tested. These mixes contain three different sand to adhesive ratios; 0:1, 1:1 and 1.5:1. The Simultaneous of Thermal Analyzers (STA); represent real-time measurement, change of sample weight analysis...

Concrete bricks or blocks are the most commonly used as construction materials over the world. They are used extensively in buildings due to the raw materials availability and the main binder of concrete is Portland cement which is well known manufactured. Cement is a major contributor to climate change; cement manufacturing is a significant source...

The various green mortar mixes have been used in this study using various percentages of waste glass powder (WGP), steel slag (SG) and Micro-silica fume(SF). The different properties of flow, density, ultrasonic pulse velocity (UPV), compressive and flexural strengths have been tested for such green mortar in the first phase of experimental work. T...

High molar mass materials (nano-silica slurry [NSS] and aggregate of steel furnace slag [ASFS]) can improve concrete shielding properties. However, only a few studies have been reported in this regard. Hence, this paper aims to determine the effect of NSS and ASFS on the properties of the resulting steel slag heavyweight concrete (SSHWC). The use o...

The behavior of non-reinforced green mortar with fibers has been observed. Different green mortar mixes have been prepared using different percentages of waste glass powder (WGP), steel slag (SG) and silica fume (SF).The properties of flow, density, ultrasonic pulse velocity (UPV), compressive and flexural strengths have been tested for such green...

Geopolymer has been presented as new evolution in the concrete technology world, where cementitious materials such as ceramic powder and Slag have been replaced by high percentages of cement used in construction. Thus, the activation of such materials was performed by highly alkaline solutions in order to be acted as a binder in the mix. Therefore,...

Recently, there is an increased research awareness towards the use of high strength cementitious matrices like reactive powder concrete (RPC) for rehabilitation and repairing damaged structures in addition to their use in the maintenance of concrete structures. Therefore, this research has been conducted to present some RPC mixes prepared from vari...

In the present paper the behavior of mortar reinforced with polypropylene fibers was studied. Different percentages of polypropylene fibers such as 0, 0.2, 0.4, 0.6 and 0.8% as volumetric fractions were used. Different properties which are flowability, density, compressive strength, flexural strength and splitting tensile strength were evaluated fo...

Superplasticizer is one of the most common types of chemical admixtures used in the mortar or concrete, especially that characterized high performance like Reactive powder concrete. Recently, the chemical admixture is considered as one of the main components of cement-based products due to it has a significant role to improve the physical and mecha...

The covers the studying for the fresh and hardened properties of self-compacting concrete (SCC), using two types of fine materials (silica fume and limestone powder as 10% each by weight of cement. Also, the uses of crushed bricks aggregate and recycled concrete aggregate with different percentage of replacement from the aggregate (coarse & fine) h...

Block is an old building material used in construction and there are different kinds of block (hard and hollow).The main materials that used in this study are cement, sand, gravel, water, superplasticizer (Conplast SP423) as well as, the sawdust and/or PVC waste materials. Thus, the study includes two stages; the first stage deals with the producti...

The effect of fixed amount of wood ash on the different mortar mixes with other materials and their influence on fresh or hardened concrete mortar properties has been studied. The preparation of Ash become by burn the wood in 200 C, so this process is called as “Wood Ash (WA)”, fumed silica (FS) which is commercial material having Nano particles si...

This paper demonstrates the behavior of foamed concrete reinforced with either or both carbon fibers and polypropylene fibers exposed to elevated temperatures. Various volumetric fractions of carbon fibers (0.5, 1 and 1.5%) were used to reinforce foamed concrete mix. Also, hybrid fibers of carbon fibers (CF) and polypropylene fibers (PPF) as 1%CF +...

This study evaluates the workability and compressive strength properties of normal weight concrete (NWC) using high dosage of fly ash cement replacement. The goal is to find the suitable mix proportion of G40 NWC and to study the slump-loss at different interval time with fly ash replacement up to 60%. The strength properties of NWC were investigat...

This study has been undertaken to investigate the evaluation of Fiber-reinforced Foamed Concrete (FRFC) performance by the use of toughness and non-destructive tests. These tests cover the workability, density, static modulus of elasticity, toughness, ultrasonic pulse velocity and absorption tests. Different FRFC mixes using carbon fibers in the or...

This study deals with the production of durable high strength flowable mortar (HSFM). Firstly, the optimum percentage of silica fume was determined due to Pozzolanic Activity Index (P.A.I) test. Secondly, the selected mortar reinforced by different percentages of steel fibers or hybrid fibers of steel fibers , palm fibers and synthetic fibers (Barc...

The properties of foamed concrete reinforced with carbon fibres and hybrid fibres of carbon with polypropylene fibres has been studied. Various volumetric fractions of carbon fibres (0.5, 1 and 1.5%), hybrid fibres of carbon fibres (CF) with polypropylene fibres (PPF) as (1% CF + 0.5% PPF) & (0.5% CF + 1% PPF), also the mono polypropylene fibres as...

Foamed concrete is a versatile material that has been of great significance and been the subject of large industrial demand in recent years for a wide range of construction projects. The foam agent is used to produce lightweight concrete. In this study, the slump flow of foamed concrete was measured, along with the hardening properties of compressi...

The present work deals with engineering properties of high performance mortar (HPM) to be used as a repair material. The experimental study was conducted on HPM reinforced with mono steel fibers and hybrid fibers consist of steel and polypropylene fibers. The economical efficiency of the designed mono and hybrid fibers reinforced mortar were presen...

Foamed concrete is a versatile material that has produced great significance and large industrial demand in recent years in a wide range of construction projects. Foam agent used to obtain lightweight concrete. The slump flow of foamed concrete are measured. While, the hardened properties include compressive strength, splitting tensile strength, fl...

This paper illustrates the performance of lightweight concrete using various amounts of expanded polystyrene beads (EPS) and different amounts of foam agent to produce lightweight concrete. The objective of this paper is to produce lightweight concrete with good workability and strength, by different mix proportion of foam agent (0.4, 0.6, 0.8, 1,...

This paper shows the production of foamed concrete reinforced with carbon fibers. Firstly, different mortar mixes were prepared by varying ratio of sand/cement. Continuously, the selected mortar mix was used for the foamed concrete produced due to the results of density, compressive strength, splitting tensile strength and flexural strength test. S...

This paper illustrates the performance of lightweight concrete using various amounts of expanded polystyrene beads (EPS) and different amounts of foam agent to produce lightweight concrete. The objective of this paper is to produce lightweight concrete with good workability and strength, by different mix proportion of foam agent (0.4, 0.6, 0.8, 1,...

Lightweight foamed concrete (LWFC) is a high performance concrete having structural strength with lightweight density and high flowability. High performance lightweight foamed concrete (HPLWFC) is used in modern concrete technology and intensely in the construction applications of high-rise buildings, long-span concrete structures and road sub-base...

This study first investigates the optimization of different percentages of steel fiber (0-2%) and the hybridization of the steel fiber and palm fiber as 2% volumetric fractions on the high strength flowing concrete and determine the density, compressive strength, flexural strength and toughness indices for the mixes. The results show that the use o...

The maintenance and the repair of concrete structures have become more needed in the field of Civil Engineering. The selection of repair materials for concrete structures requires an understanding of the material behavior. Therefore, this research is conducted to provide a clear indication and understanding of the behavior and structural performanc...

The stability of earth retaining structures in flood prone areas has become a serious problem in many countries. The two most basic causes of failure arising from flooding are scouring and erosion of the foundation of the superstructure. Hence, a number of structures like bridges employ scour-arresting devices, e.g., gabions to acting on the piers...

High performance lightweight foamed concrete has the same mechanical properties of normal weight concrete (conventional concrete). The main applications are void filling, bridge abutments, bridge decks, marine structures, frame buildings, roads, sewer systems, roofing, walls, and floors. However, concrete is extensive brittleness and considered wea...

Lightweight foamed concrete exhibits many advantages and excellent features comprising more efficient strength-to-weight ratio in structural elements, high strength, reduced dead load, decrease foundation loads, energy saving, waste consuming, temperature conservation, and noise insulation. This work was prepared to investigate the effect of glass...

This study was conducted to investigate the mechanical properties and the durability by using of different percentages of steel fibre with high strength flowing concrete (HSFC) and also the use of the hybridization of steel fibres, palm fibres and synthetic fibre (Barchip). Compressive strength, splitting tensile strength, flexural strength, static...

The production and use of durable materials in construction are considered as one of the most challenging things for the professional engineers. Therefore, this research was conducted to investigate the mechanical properties and the durability by using of different percentages of steel fiber with high-strength flowable mortar (HSFM) and also the us...

This study was conducted to investigate the mechanical properties and the durability by using of different percentages of steel fibre with high strength flowing concrete (HSFC) and also the use of the hybridization of steel fibres, palm fibres and synthetic fibre (Barchip). Compressive strength, splitting tensile strength, flexural strength, static...

This study investigates the mechanical properties of hybrid fiber as 2 vol.% fraction. The researchers tested hybridizations of steel fibers-, palm fibers-, and synthetic fibers (Barchip) by incorporating them with high strength flowing concrete (HSFC) to determine the density, compressive strength, splitting tensile strength, static modulus of ela...

This study was conducted to determine some physical and mechanical properties of high-strength flowable mortar reinforced with different percentages of palm fiber (0, 0.2, 0.4, 0.6, 0.8, 1.0, 1.2, 1.4, and 1.6% as volumetric fractions). The density, compressive strength, flexural strength, and toughness index were tested to determine the mechanical...

The hybridization of different types of fibers may play important roles in arresting cracks and thus achieve high performance of concrete. Therefore, this study was conducted to investigate the use of different percentages of steel fiber (0, 1.0, 1.25, 1.5, 1.75 & 2%) as vol. %. Consequently, the hybridization of the steel fiber and palm fiber as 2...

The use of fibers in concrete or mortar is well known for their potential to enhance the flexural toughness, the energy dissipation and the impact resistance for many structural applications especially in building repairs and other Civil Engineering works. The use of fibers in flowable concrete provides great advantages in arresting cracks and enha...

An experimental study was conducted on High-Strength Flowable Mortar (HSFM) reinforced at different percentages of steel fiber (0, 0.25, 0.5, 0.75, 1.0, 1.25, 1.5, 1.75 and 2.0% as volumetric fractions) to determine the density, compressive strength, static modulus of elasticity and flexural strength. The load-deflection curves under a static flexu...

This study investigates the use of steel fibers and hybrid composite with a total fibers content of 2% on the high strength flowing concrete and determines the density, compressive strength, static modulus of elasticity, flexural strength and toughness indices for the mixes. The results show that the inclusion of more than 0.5% of palm fibers in hy...

This study investigates the use of steel fibers and hybrid composite with a total fibers content of 2% on the high strength flowing concrete and determines the density, compressive strength, static modulus of elasticity, flexural strength and toughness indices for the mixes. The results show that the inclusion of more than 0.5% of palm fibers in hy...

Currently high-strength concrete is increasingly used in modern concrete technology and particularly in the construction of high-rise buildings. This study has been conducted to investigate the properties of high-strength concrete that was produced by using a superplasticiser high-range water-reducing admixture (HRWRA) and pumicite. The results sho...