An Expert System to Remedy Concrete Imperfections and Their Effects on Rigid Pavements

Mosa, Ahmed Mancy; Ismail, Norfarah Nadia; Yusoff, Nur Izzi Md.; Mubaraki, Muhammad; Memon, Nasrullah; Taha, Mohd Raihan; Hainin, Mohd Rosli

doi:10.11113/jt.v76.5850

Cited by 8 publications

(6 citation statements)

References 33 publications

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“…Casting was done at day time; therefore, outside temperature is high and inside of concrete temperature is also high. Mosa et al, 2015, was explains that all crack types are caused by temperature [5].…”

Section: Discussionmentioning

confidence: 99%

“…There are many types of cracks such as the tearing of concrete through paver, plastic shrinkage cracking at pavement surface, map cracking (craze cracks), transfer and oblique cracks within the panel, random longitudinal cracks within the panel, corner cracks (break at panel corner), random transverse cracks at or near transverse joints, random longitudinal cracks at or near longitudinal joints, and cracks in front of saw during joint cutting [5]. Variation of crack width in Texas was studied [6].…”

Section: Introductionmentioning

confidence: 99%

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Cracking of open traffic rigid pavement

et al. 2017

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Abstract. The research is done by observing the growth of real structure cracking in Natar, Lampung, Indonesia compared to C. Niken's et al research and literature study. The rigid pavement was done with open traffic system. There are two main crack types on Natar rigid pavement: cracks cross the road, and cracks spreads on rigid pavement surface. The observation of cracks was analyzed by analyzing material, casting, curing, loading and shrinkage mechanism. The relationship between these analysis and shrinkage mechanism was studied in concrete micro structure. Open traffic make hydration process occur under vibration; therefore, fresh concrete was compressed and tensioned alternately since beginning. High temperature together with compression, cement dissociation, the growth of Ca 2+ at very early age leads abnormal swelling. No prevention from outside water movement leads hydration process occur with limited water which caused spreads fine cracks. Limited water improves shrinkage and plastic phase becomes shorter; therefore, rigid pavement can't accommodate the abnormal swelling and shrinking alternately and creates the spread of cracks. Discontinuing casting the concrete makes both mix under different condition, the first is shrink and the second is swell and creates weak line on the border; so, the cracks appear as cracks across the road.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cracking of open traffic rigid pavement

et al. 2017

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“…Distress of flexible pavements may occur due to several causes [1,2] such as unstable subgrade [3][4][5], insufficient subbase or base thickness [6][7][8], poor mix design of the asphaltic layers, high traffic loading, excessive axel loads, and environmental effects [9,10]. These distresses can reduce the serviceability of the pavements and cause severe damages in the vehicles which lead to large losses in money for the persons and community which results in huge losses to the country's economy [11][12][13][14][15]. In addition, poor pavements condition can cause dangerous traffic accidents that lead to injury or death of road users as well as damages in vehicles and road properties [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of structural properties of Baghdad-Baquba road pavements

Kadeem¹,

Joni²,

Waheed³

2022

PEN

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Structural evaluation of the road pavements is an essential concept to ensure their efficiency to carry traffic loads and to archive the data for future usage especially in major highways. Baghdad-Baquba is an important interstate highway as it connects the capital of Iraq with Diyala governorate which is one of the biggest governorates in Iraq. In addition, this highway connects Baghdad city with several governorates in the north of Iraq. However, this highway exhibits low serviceability due to poor condition of its pavements. Therefore, the structure of the pavements must be evaluated to specify the causes those lead to the decrease in its serviceability and to propose the suitable rehabilitation methods. This study aims to adopt a field survey to extract a number of samples from selected section in this highway to evaluate the structural properties of the pavements based on laboratory testing. Four cores and one pit with 1×1 m dimensions were extracted from the pavements in the field. Several tests were implemented on these tests based on standard methods. The results of the tests were adopted to evaluate the capacity of the pavement based on AASHTO 1993 method. The results exhibited that the estimated applied traffic load exceeded the calculated allowable traffic load by more than 12 times which reflect the disastrous situation. Therefore, the study proposed to rehabilitate the pavements by reconstruction. The study proposed to construct three layers: asphaltic layer with thickness of 240 mm, granular base with thickness of 250 mm, and granular subbase with a thickness of 250 mm. The study stated that all layers must have superior quality with high elastic modulus to resist the predicated traffic load.

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“…Success in construction can be achieved by applying these efforts intelligently at a reasonable price within a given timeframe [7,11]. However, highway engineers encounter several problems during the construction of rigid pavements [16,17,18]. Among the problems that occur during the construction of rigid pavements, those that occur during concreting are more critical as their occurrence leads to more complex problems.…”

Section: Introductionmentioning

confidence: 99%

Overcoming Concreting Problems of Rigid Pavements using Knowledge-Based System

Mosa¹

2021

CEBEL

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Highway engineers encounter numerous problems during rigid pavement concreting. Thus, deciding on appropriate controlling measures is a crucial task. These problems affect the quality of pavements and increase initial cost. Experts can control them, but novices cannot. Therefore, this study describes the development of a novel knowledge-based system to control concreting problems of rigid pavements. The knowledge that includes problems encountered in the domain, their causes, preventive actions, solutions, and their effects was acquired from the experts by different methods and was presented in a classified format. The calcified knowledge was transferred into rules and coded in software by using Visual Basic. The system was tested by different users involved in highway engineering, including experts and novice engineers. The mean values of the overall system evaluation by the four types of users based on the 5-point Likert scale were 4 and 4.5 respectively. The developed system can be used to help highway engineers overcome the problems during concreting of rigid highway pavements, identify their causes, preventive actions, and effects on the construction process. It can also be used to help the experts formulate decisions quickly. The system facilitates decision making of domain experts by reducing unnecessary inputs, performing quick calculations, and providing classified recommendations. In addition, it can be used as an instructional tool for pavement engineers or highway engineering students, to interchange the expertise among the experts, and to transfer expertise to the next generation of engineers.

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An Expert System to Remedy Concrete Imperfections and Their Effects on Rigid Pavements

Cited by 8 publications

References 33 publications

Cracking of open traffic rigid pavement

Cracking of open traffic rigid pavement

Evaluation of structural properties of Baghdad-Baquba road pavements

Overcoming Concreting Problems of Rigid Pavements using Knowledge-Based System

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