Performance Evaluation of Bedding Sand and Load Transfer Characteristic of Concrete Block Pavements

Concrete block pavement is used as a modern pavement type owing to its economic benefits. The physical properties, mechanical properties, and functional characteristics of bedding sand and joint sand, the main components of concrete block pavements, should be accurately understood. Owing to the disc...

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Autores principales:	Wuguang Lin, Yu Dong, YooSeok Jung, Hua Zheng, Yoon-ho Cho
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	concrete block pavement load transfer efficiency joint sand bedding sand Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/50c574b4a3e048a99ab72390d7007567
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spelling	oai:doaj.org-article:50c574b4a3e048a99ab72390d70075672021-11-11T15:10:37ZPerformance Evaluation of Bedding Sand and Load Transfer Characteristic of Concrete Block Pavements10.3390/app1121101112076-3417https://doaj.org/article/50c574b4a3e048a99ab72390d70075672021-10-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/10111https://doaj.org/toc/2076-3417Concrete block pavement is used as a modern pavement type owing to its economic benefits. The physical properties, mechanical properties, and functional characteristics of bedding sand and joint sand, the main components of concrete block pavements, should be accurately understood. Owing to the discontinuous structure of these pavements, load transfer efficiency (LTE) is the most important index from the perspective of performance. The factors that affect LTE are bedding sand (type, grading, and thickness), joint sand (type and grading), and concrete block (shape and pattern). Therefore, the optimal design for concrete block pavements can be achieved by analyzing each factor. In this study, three types of sand (river, quartz, and manufactured) were selected to examine the mechanical properties via direct transfer experiments. It was observed that the shear strength of river sand was the highest. It was also found that the difference between the shear strength and the internal friction angle (according to the content of 0.6 mm in the grading of bedding sand) was not large, and the shear strength and the friction angle increased as the content increased to 0.075 mm. In addition, the load transfer characteristics of the joint and rotational interlocking of the block were evaluated through a non-destructive test using the degree of joint filling, block shape, and construction pattern as variables. As a result, the degree of joint filling had the greatest effect on the load transfer characteristics of the joint and rotational interlocking of the block. The effect of the block shape was larger than that of the construction pattern. When a heavy load is applied, the LTE between blocks must be maintained at 50% or more, and the rotation of blocks at 0.6° or less, if 75% or more of the joint must be filled for preventing excessive vertical deformation.Wuguang LinYu DongYooSeok JungHua ZhengYoon-ho ChoMDPI AGarticleconcrete block pavementload transfer efficiencyjoint sandbedding sandTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10111, p 10111 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	concrete block pavement load transfer efficiency joint sand bedding sand Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	concrete block pavement load transfer efficiency joint sand bedding sand Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Wuguang Lin Yu Dong YooSeok Jung Hua Zheng Yoon-ho Cho Performance Evaluation of Bedding Sand and Load Transfer Characteristic of Concrete Block Pavements
description	Concrete block pavement is used as a modern pavement type owing to its economic benefits. The physical properties, mechanical properties, and functional characteristics of bedding sand and joint sand, the main components of concrete block pavements, should be accurately understood. Owing to the discontinuous structure of these pavements, load transfer efficiency (LTE) is the most important index from the perspective of performance. The factors that affect LTE are bedding sand (type, grading, and thickness), joint sand (type and grading), and concrete block (shape and pattern). Therefore, the optimal design for concrete block pavements can be achieved by analyzing each factor. In this study, three types of sand (river, quartz, and manufactured) were selected to examine the mechanical properties via direct transfer experiments. It was observed that the shear strength of river sand was the highest. It was also found that the difference between the shear strength and the internal friction angle (according to the content of 0.6 mm in the grading of bedding sand) was not large, and the shear strength and the friction angle increased as the content increased to 0.075 mm. In addition, the load transfer characteristics of the joint and rotational interlocking of the block were evaluated through a non-destructive test using the degree of joint filling, block shape, and construction pattern as variables. As a result, the degree of joint filling had the greatest effect on the load transfer characteristics of the joint and rotational interlocking of the block. The effect of the block shape was larger than that of the construction pattern. When a heavy load is applied, the LTE between blocks must be maintained at 50% or more, and the rotation of blocks at 0.6° or less, if 75% or more of the joint must be filled for preventing excessive vertical deformation.
format	article
author	Wuguang Lin Yu Dong YooSeok Jung Hua Zheng Yoon-ho Cho
author_facet	Wuguang Lin Yu Dong YooSeok Jung Hua Zheng Yoon-ho Cho
author_sort	Wuguang Lin
title	Performance Evaluation of Bedding Sand and Load Transfer Characteristic of Concrete Block Pavements
title_short	Performance Evaluation of Bedding Sand and Load Transfer Characteristic of Concrete Block Pavements
title_full	Performance Evaluation of Bedding Sand and Load Transfer Characteristic of Concrete Block Pavements
title_fullStr	Performance Evaluation of Bedding Sand and Load Transfer Characteristic of Concrete Block Pavements
title_full_unstemmed	Performance Evaluation of Bedding Sand and Load Transfer Characteristic of Concrete Block Pavements
title_sort	performance evaluation of bedding sand and load transfer characteristic of concrete block pavements
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/50c574b4a3e048a99ab72390d7007567
work_keys_str_mv	AT wuguanglin performanceevaluationofbeddingsandandloadtransfercharacteristicofconcreteblockpavements AT yudong performanceevaluationofbeddingsandandloadtransfercharacteristicofconcreteblockpavements AT yooseokjung performanceevaluationofbeddingsandandloadtransfercharacteristicofconcreteblockpavements AT huazheng performanceevaluationofbeddingsandandloadtransfercharacteristicofconcreteblockpavements AT yoonhocho performanceevaluationofbeddingsandandloadtransfercharacteristicofconcreteblockpavements
_version_	1718437135028060160

Performance Evaluation of Bedding Sand and Load Transfer Characteristic of Concrete Block Pavements

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