Causes of Surface Cracking in Jointed Plain Concrete Pavement: Case study of Kagere Munyange-Njigari-Gituiga Road in Kenya
AbstractConcrete pavements are expected to have a long structural life. The present study considered a jointed plain concrete pavement (JPCP) road in Kenya that developed surface cracks within the first 2 years of construction. With a CBR of 10-17%, the subgrade layer was ruled out as a possible cause of cracking. However, the subbase layer did not meet the minimum CBR value, and 24% of the pavement did not attain the recommended minimum layer modulus value of 345 MPa for neat gravel construction. Furthermore, the concrete strength was below the design strength of 30KN/mm2. None of the saw-cut joints met the recommended depth and only 5% of the slabs met the design slab thickness. Inadequate slab thickness, inadequate depth of cut joints, and inadequate strength of subbase layer could have been responsible for the development of surface cracks. These shortcomings should be interrogated further to establish the true combination of factors that were responsible for the cracking of the JPCP Furthermore, there is need for a deliberate effort to assess the capacity and competencies of the construction industry in Kenya to handle new technologies in road construction.
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Open access articles published in the Journal of Sustainable Research in Engineering are under the terms of the Creative Commons Attribution (CC BY) License which permits use, distribution and reproduction in any medium, provided the original work is properly cited. The CC BY license permits commercial and non-commercial re-use of an open access article, as long as the author is properly attributed.
Copyright on any research article published in the Journal of Sustainable Research in Engineering is retained by the author(s). The authors grant the Journal of Sustainable Research in Engineering with a license to publish the article and identify itself as the original publisher. Authors also grant any third party the right to use the article freely as long as its original authors, citation details and publisher are identified.
Use of the article in whole or in part in any medium requires proper citation as follows:
Title of Article, Names of the Author, Year of Publication, Journal Title, Volume(Issue) and page. Links to the final article on the JSRE website are encouraged.
The Creative Commons Attribution License does not affect any other rights held by authors or third parties in the article, including without limitation the rights of privacy and publicity. Use of the article must not assert or imply, whether implicitly or explicitly, any connection with, endorsement or sponsorship of such use by the author, publisher or any other party associated with the article.
For any reuse or distribution, users must include the copyright notice and make clear to others that the article is made available under a Creative Commons Attribution license, linking to the relevant Creative Commons web page. Users may impose no restrictions on use of the article other than those imposed by the Creative Commons Attribution license.
To the fullest extent permitted by applicable law, the article is made available as is and without representation or warranties of any kind whether express, implied, statutory or otherwise and including, without limitation, warranties of title, merchantability, fitness for a particular purpose, non-infringement, absence of defects, accuracy, or the presence or absence of errors.