A test method and deterioration model for joints and cracks in concrete slabs

Arnold, Stuart; Fleming, Paul R.; Austin, Simon A.; Robins, Peter J.

doi:10.1016/j.cemconres.2005.08.002

Cited by 11 publications

(11 citation statements)

References 3 publications

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“…The lateral sections of the beam were supported using wooden blocks on the upper face and positioning steel plates on the side faces. This configuration causes a load differential between both sides of the crack producing double shear stress and a reduction in the risk of rotation (Arnold, Fleming, Austin, & Robins, 2005). In this way, the symmetrical degradation of both cracks and the configuration of the test allow the study of the effect of shear stresses in the specimen like the in-service conditions of JPCPs (Figure 1).…”

Section: Practical Test Methodsmentioning

confidence: 99%

“…The pavements are designed considering 80 kN of the standard axle, transmitting each wheel of the vehicle 40 kN. However, when the axle weight exceeds 80 kN, the value 50 kN was preferred as the standard weight per wheel (Arnold, Fleming, Austin, & Robins, 2005). Then, for the situation in which a load of 50 kN is applied, a stress value of 250 kPa is obtained.…”

Section: Load Type and Magnitudementioning

confidence: 99%

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Laboratory Characterization of The Load Transfer-Crack Width Relation for Innovative Short Concrete Slabs Pavements

Pradena

Houben

César

2020

BJRBE

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Aggregate interlock is the dominant load transfer mechanism in non-dowelled Jointed Plain Concrete Pavements, as the innovative short concrete slabs. Although the Load Transfer Efficiency of this pavement innovation is based on that mechanism, the structural design methods do not relate the Load Transfer Efficiency by aggregate interlock with its direct cause, which is the Crack Width under the joints. The objective of the present article is to characterise in the laboratory the Load Transfer Efficiency−Crack Width relation for innovative short slabs Jointed Plain Concrete Pavements. Additionally, as an alternative to large-scale laboratory tests to study the Load Transfer Efficiency, a practical test on a reduced scale is proposed. The results confirmed that short slabs Jointed Plain Concrete Pavements with high-quality aggregates are able to provide adequate Load Transfer Efficiency (above 70%) without dowels bars. Based on the laboratory results, complemented with previous field data, a Load Transfer Efficiency−Crack Width curve is proposed and made available for structural design methods of short slabs Jointed Plain Concrete Pavements. Finally, the laboratory test on a reduced scale is useful to develop specific Load Transfer Efficiency−Crack Width relations using standard equipment available in traditional concrete laboratories.

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Section: Practical Test Methodsmentioning

confidence: 99%

Section: Load Type and Magnitudementioning

confidence: 99%

Laboratory Characterization of The Load Transfer-Crack Width Relation for Innovative Short Concrete Slabs Pavements

Pradena

Houben

César

2020

BJRBE

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“…As in the in-service pavements, the aggregate interlock mechanism works only by shear stress [50]; the samples must be prepared in order to ensure that only this stress is present in the experiment. It is possible to fulfil this condition without inconvenience using the two cracks configuration proposed by Thompson [51] and Arnold et al [52]. This configuration requires a controlled crack to be induced on either side of the load application position.…”

Section: Practical Laboratory Testmentioning

confidence: 99%

Sustainable Engineering: Load Transfer Characterization for the Structural Design of Thinner Concrete Pavements

César

Pradena

2020

Sustainability

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Concrete pavements are characterized by their high durability and low conservation costs. However, concrete production causes large amounts of harmful emissions. In this context, short slab pavements allow us to reduce the slab thickness and the amount of concrete used in their construction. These benefits are only valid if the design assumptions are fulfilled, one of which is the provision of enough Load Transfer Efficiency (LTE) by the aggregate interlock. However, the current design method for short slabs does not relate the LTE with the Crack Width (CW) under the joints. This can jeopardize the sustainable benefits of short slabs. The objective of this study is to propose a method to develop the LTE–CW relationship for the short slabs’ design. The sustainable and accessible approach adopted in the proposal represents a paradigm shift compared to the traditional methods, which are limited to laboratories with sufficient resources to perform real-scale testing. The results show that it is possible to develop the LTE–CW relation in a sustainable manner. Furthermore, the aggregates that fulfill the technical specifications for pavements provide enough LTE when most of the joints are activated. When that happens, short slab pavements reduce environmental and human health impacts by 33% and 26%, respectively.

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“…New cracks were found growing among the major fractures. From the midstage to the late stage of the cyclic loading, one of the cracks grew to be a major crack; meanwhile, other fractures became stabilized [13,16]. From the flexure-shear section, new cracks can be found when increasing the cycle [17,18].…”

Section: Cracksmentioning

confidence: 99%

“…Experiment is designed with a total of 5 specimens which were divided into 3 groups, to simulate a simply supported singlespan bridge deck [8][9][10][11][12][13][14]. Design parameters of the specimens are shown in Table 1.…”

Section: Experimental Situationmentioning

confidence: 99%

Fatigue Tests of Concrete Slabs Reinforced with Stainless Steel Bars

Zhang

Zhou

2018

Advances in Materials Science and Engineering

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Experimental studies on fatigue behavior of reinforced concrete slab with stainless steel rebar and carbon steel rebar have shown that, at the same reinforcement ratio, the slope of the deflection-cycle number curves of stainless steel-reinforced concrete slab is lower than that of ordinary steel-reinforced concrete slab. e higher the reinforcement ratio is, the smaller the maximum crack width would be. Higher stress level contributes to larger deflection and reinforcement strain in midspan and shorter fatigue life. Compared to the ordinary steel-reinforced concrete slab, the stainless steel-reinforced concrete slab shows narrower maximum crack under the same number of loading cycles. Less significant midspan deflection, reinforcement strain, and longer fatigue life are observed in stainless steel-reinforced concrete slab at the same reinforcement ratio, stress level, and cycling time. With the increase of reinforcement ratio, the deflection and fatigue life extended.

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A test method and deterioration model for joints and cracks in concrete slabs

Cited by 11 publications

References 3 publications

Laboratory Characterization of The Load Transfer-Crack Width Relation for Innovative Short Concrete Slabs Pavements

Laboratory Characterization of The Load Transfer-Crack Width Relation for Innovative Short Concrete Slabs Pavements

Sustainable Engineering: Load Transfer Characterization for the Structural Design of Thinner Concrete Pavements

Fatigue Tests of Concrete Slabs Reinforced with Stainless Steel Bars

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