Mechanical Characteristics and Self-Monitoring Technique of Smart Cementitious Mixtures with Carbon Fiber and Graphite Powder as Hybrid Functional Additives

Abdullah, Raid Dahham; Al-Dahawi, Ali; Zghair, Hussein

doi:10.30684/etj.2022.134097.1220

Cited by 4 publications

(3 citation statements)

References 29 publications

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“…All combinations, however, may be considered excellent homogenous mixtures. Furthermore, the difference in average pulse speeds caused by the presence of hybrid fillers provided the impression that the electrically conductive materials impacted the homogeneity and strength of the mix, which is in line with the results obtained by Abdullah et al (16). They demonstrated that the kinds of components and their amounts in the cement-based combination influence pulse speed.…”

Section: Upv Test Resultssupporting

confidence: 89%

“…From this, it is useful to utilize steel shaving reinforcement the mixtures, and the use of high percentages are better than low percentages, as the FVER obtained, which is the index of the self-sensing phenomenon are higher. In addition, the steel shaving fibers show good behavior in terms of the cohesion of concrete and controlling the microcracks that occur during the load application (10,11,16,17,45).…”

Section: Behavior Of Self-sensing Under Splitting Tensile Testmentioning

confidence: 99%

“…The manufacturing of smart concrete pavement that has acceptable mechanical properties is very important for early detection of damage and, therefore, extending the life of the pavement and enhancing its durability and, thus, reducing the rehabilitation and maintenance costs (10)(11)(12)(13). In most studies of cement-based self-sensing materials, electrically conductive filler(s) is/are responsible for the initiation of electrical networks within cement-based matrices (14)(15)(16)(17).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Novel Way of Using Ground Granulated Blast Furnace Slag and Steel Shaving Fibers for Production of Sustainable and Smart Rigid Pavement

Al-Hindawi,

Al-Dahawi,

Al-Zuheriy

2024

IJE

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Supporting sustainable development, contributing to reducing waste that causes environmental damage, and reducing the use of natural materials are part of preserving the environment and society. This is done by highlighting the manufacture of sustainable concrete pavement of acceptable quality and according to specifications. The authors previously produced a concrete pavement mixture with optimal properties by partially replacing the Portland cement with 55 wt.% of the ground granulated blast furnace slag (GGBFS) in addition to partially replacing the virgin aggregates with 30 wt.% of recycled aggregate from crushed rigid pavement. The goal of this research work is to produce a self-sensing rigid pavement mixture from wastes with high mechanical properties, that is better than regular concrete and less expensive. The new novel mixture has the ability to detect earlier the damages that occur to the concrete pavement so as to obtain a longer life by periodically maintaining the pavement on time. The previous mixture was improved by adding chopped steel shaving fibers with lengths ranging from 20-60 mm in four different volumetric ratios. These are 0.7%, 1%, 1.1%, and 1.2%. The results were compared with those of the basic mixture, and a decrease in workability and slump values were noticed. Moreover, significant improvements in the mechanical properties were obtained. The concrete's resistance to the applied loads increased by increasing the percentage of steel shaving in the mixtures, due to the increasing of cohesion forces within the mixture. The self-sensing capability for the developed mixtures was tested by measuring the changes in the electrical resistance under different types of mechanical loadings. The results showed that the direction of the applied load and the proportion of steel shavings affect the self-sensing properties in terms of the fractional variation in the electrical resistance (FVER, %), which highlights the importance of using steel shavings in producing smart concrete pavements from reused resources more efficiently and highly cost-effectiveness.

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Section: Upv Test Resultssupporting

confidence: 89%

Section: Behavior Of Self-sensing Under Splitting Tensile Testmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Novel Way of Using Ground Granulated Blast Furnace Slag and Steel Shaving Fibers for Production of Sustainable and Smart Rigid Pavement

Al-Hindawi,

Al-Dahawi,

Al-Zuheriy

2024

IJE

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Self-sensing cementitious composite sensor with integrated steel fiber and carbonaceous powder for real-time application in large-scale infrastructures

Dinesh¹,

Suji

Pichumani

2023

Sensors and Actuators A: Physical

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An investigation of self-sensing and mechanical properties of smart engineered cementitious composites reinforced with functional materials

Al-Dahawi,

Abdullah,

Joni

2024

Open Engineering

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In this study, hybrid functional fillers were used to create an electrical network that is used to develop self-damage sensing ability within conventional cementitious mixtures. This electrical network was used to examine the self-sensing properties of cementitious composites under different loading scenarios such as compression, splitting tensile, and cyclic loading for three ages, those are 7, 14, and 28. With the help of a single type of functional filler or fiber, the self-sensing capabilities of the majority of previous works are demonstrated. This study incorporates two types of functional fillers for sustainability and low cost: micro-scale carbon fibers (CF) and waste iron (Ir) powder in the form of microparticles. The purpose of the current work is to fill up the subject’s gap using two different types of functional fillers as a hybrid form. Three hybrid proportions of a micro-scale CF (vol% of mixture) and waste iron powder (Ir) (wt% of cementitious materials) are utilized. These are (0.33, 15), (0.67, 10), and (1.00, 5), respectively. Unlike carbon-based materials, polyvinyl alcohol is used as a mechanical reinforcing fiber 2% by volume of the cementitious mixture. Additionally, a control combination without any fillers has been created. The electrical resistivity of the fabricated samples was monitored during various loading applications for every second to confirm their self-sensing capabilities. Regarding the fractional change in electrical resistivity, the self-sensing behavior was superior for mixes containing high dosages either of waste iron powder or CF in the same hybrid matrix. Quite the contrary to that, the piezoresistivity was modest in the middle hybrid ratio.

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Mechanical Characteristics and Self-Monitoring Technique of Smart Cementitious Mixtures with Carbon Fiber and Graphite Powder as Hybrid Functional Additives

Cited by 4 publications

References 29 publications

A Novel Way of Using Ground Granulated Blast Furnace Slag and Steel Shaving Fibers for Production of Sustainable and Smart Rigid Pavement

A Novel Way of Using Ground Granulated Blast Furnace Slag and Steel Shaving Fibers for Production of Sustainable and Smart Rigid Pavement

Self-sensing cementitious composite sensor with integrated steel fiber and carbonaceous powder for real-time application in large-scale infrastructures

An investigation of self-sensing and mechanical properties of smart engineered cementitious composites reinforced with functional materials

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