Examining the Influence of Aggregate Shape Properties Measured Using Imaging Technique on the Flexural Strength of Concrete

Al-Rousan, Taleb; Al-Hattamleh, Omar; Alfoul, Bilal Abu

doi:10.15866/irece.v13i2.20891

Cited by 4 publications

(4 citation statements)

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“…This test provided information about the 2D shape, angularity, surface texture, and sphericity of the aggregates. The results are presented in Figure 2, including the limits established according to Al Rousan’s classification ( 20 ).…”

Section: Raw Materials Characterizationmentioning

confidence: 99%

Effects of Aggregate/Filler Characteristics on Semi-Circular Bend Fracture Parameters of Asphalt Concrete Mixtures Subject to Moisture Damage

Frossard

Teixeira

Kim

2022

Transportation Research Record: Journal of the Transportation R

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The binder–aggregate adhesiveness plays an important role in preventing asphalt concrete adhesive fracture and it is greatly influenced by the chemical, physical, morphological, and mineralogical properties of aggregates. Many studies have attempted to assess fracture resistance of asphalt mixtures by evaluating parameters found from different laboratory fracture tests. Those parameters are related to the mixture components, and they can change when moisture conditions are induced. This study aims to investigate the effects of aggregate/filler characteristics on mixture fracture resistance including the effect of moisture damage. Two aggregates and four fillers with varied chemical compositions were selected and combined with one unmodified asphalt binder to design five different asphalt mixtures. Each aggregate and filler was tested to characterize physical, chemical, and morphological properties. Asphalt concrete mixtures samples, with and without being subjected to moisture conditioning, were submitted to the semi-circular bend (SCB) fracture test. Statistical analyses were performed to determine the level of significance on the parameter change resulting from the properties of particles and moisture conditioning. The results indicated that the type of aggregates did not present significant influence on the SCB fracture results when moisture conditioning was not involved. Also, the type of filler presented different trends on the parameter’s change when the samples were subjected to moisture. However, it was observed that the effects of aggregates and fillers on the fracture resistance of asphalt mixtures were pronounced when the SCB samples were subjected to moisture conditioning, because of the material-specific binder–aggregate adhesion in the presence of moisture.

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Section: Raw Materials Characterizationmentioning

confidence: 99%

Effects of Aggregate/Filler Characteristics on Semi-Circular Bend Fracture Parameters of Asphalt Concrete Mixtures Subject to Moisture Damage

Frossard

Teixeira

Kim

2022

Transportation Research Record: Journal of the Transportation R

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“…Concrete made with elongated and flaky aggregates is likely to have segregation, has a finish of poor surface, and has a high sand and cement demand. In the body of concrete mixes, rounded, rounded irregularly, and cubical shapes are favored [10,11]…”

Section: Selection Of An Appropriate Aggregatementioning

confidence: 99%

Investigation of concrete properties using recycled waste concrete aggregate

Mohammed¹,

Naimi²

2023

PEN

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There are several environmental, economic, and energy reasons why RC is gaining popularity around the world. Key environmental problems include the potential for groundwater contamination due to the washing out of fresh concrete brought back from project sites, as well as the loss of natural sources of high-quality aggregate materials. The RC concrete (RCA) impact on the fundamental characteristics of traditional concrete is investigated besides the effect of different ratio effects of water-cement (w/c). The concrete as crushed rubble obtained from several Iraqi demolition sites and landfills is utilized to examine the properties of (RCA). This work utilized sand as natural, and concrete as crushed from various sources as aggregates around Baghdad city. A total of forty-five concrete mixtures were cast into nine groups. Groups were created to examine the impact of recycled coarse aggregate (CA) quality/content, dosage of cement, and w/c ratio. Strengths of compressing and splitting, and modulus of elastic tests were conducted. The findings demonstrated that the concrete rubble (CR) may be turned into recycled aggregate (RC) and utilized in the concrete manufacturing with qualities adequate for the vast majority of structural concrete applications in Iraq. Furthermore, the concrete strength has decreased by 6% to 30%, depending on the proportion of RC utilized to replace natural aggregate and the w/c ratio.

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“…Thus, adequate slag materials must show similar results to natural rock aggregates, which are characterized by high density, high compressive strength, good polishing, and freeze/thaw resistance. It is acknowledged that the properties of aggregates used in road materials directly influence final pavement performance [95,96], so several literature studies focused on the analysis of methods able to univocally determine the physical-mechanical slag parameters [96,97]. Conventionally, good characteristics of oxidizing steel slags (BOFS or EAFS) make these by-products useful for several construction fields [11], whereas LFS are suitable for many applications related to agriculture (soil acidity correction), environmental engineering (water depuration) [98], aquaculture (fishing block development) [99], the cement industry (clinker fabrication) [100,101], masonry mortars [102], and soil stabilization [103].…”

Section: Physiscal Characteristicsmentioning

confidence: 99%

The Use of Steel Slags in Asphalt Pavements: A State-of-the-Art Review

et al. 2023

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Steel slag is a by-product obtained through the separation of molten steel from impurities in steel-making furnaces. It can be produced by different types of furnaces (blast, basic oxygen, electric arc, ladle furnaces). The reuse of metallurgical slags in road pavements can pursue aims of recycling and environmental sustainability. Based on the extensive literature, the paper presents a state-of-the-art review concerning the use of slags in asphalt pavements, discussing the main controversial literature findings. Slag manufacturing processes, chemical, morphological, and physical characteristics, affect its contribution to the asphalt mixture, when it partially or fully substitutes natural aggregates. Legislative state-of-the-art environmental issues, weathering, and leaching aspects are also discussed. The main mechanical and durability properties of pavements containing different types of slags are analyzed based on laboratory and field studies. Generally, the higher mechanical properties of steel slag suggest that its inclusion in asphalt mixtures can provide high-performance pavement layers (excellent strength and stiffness, superior rutting and fatigue resistance, low moisture susceptibility). However, several research gaps still exist (e.g., mix design and seasoning procedure, bitumen–aggregate affinity, low-temperature behavior, brittleness); they are discussed to direct possible future study efforts to clarify specific technical aspects, such as, for example, the effect of slag morphology and physical properties on the final mix properties and the development of specific mix design guidelines.

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Examining the Influence of Aggregate Shape Properties Measured Using Imaging Technique on the Flexural Strength of Concrete

Cited by 4 publications

References 0 publications

Effects of Aggregate/Filler Characteristics on Semi-Circular Bend Fracture Parameters of Asphalt Concrete Mixtures Subject to Moisture Damage

Effects of Aggregate/Filler Characteristics on Semi-Circular Bend Fracture Parameters of Asphalt Concrete Mixtures Subject to Moisture Damage

Investigation of concrete properties using recycled waste concrete aggregate

The Use of Steel Slags in Asphalt Pavements: A State-of-the-Art Review

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