A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Performance engineered repair mixtures (PERM) for partial depth repairs
Partial-depth repairs performed on jointed concrete pavements have not always achieved their expected service life. High stresses generated due to incompatibility between the repair material and the in-situ concrete can contribute to reduced life. A coupled laboratory and computational investigation were performed to quantify the contribution of different incompatibilities to additional stresses generated in a partial depth repair, and to identify the critical incompatibility criteria. Then, a guideline to design a performance-engineered repair mixture (PERM) for a material-compatible repair (MCR) was developed. Based on the results, thermal expansion compatibility between the repair material and the in-situ concrete and controlled drying shrinkage of the repair material are the two main compatibility criteria. The thermal expansion compatibility criteria can be achieved by a mindful selection of coarse aggregate type for the repair material. In addition, controlled drying shrinkage criteria can be achieved through internal curing. The results also indicate that using an MCR can reduce stresses induced at the bond interface by up to 50% when compared to that of conventional repair materials.
Performance engineered repair mixtures (PERM) for partial depth repairs
Partial-depth repairs performed on jointed concrete pavements have not always achieved their expected service life. High stresses generated due to incompatibility between the repair material and the in-situ concrete can contribute to reduced life. A coupled laboratory and computational investigation were performed to quantify the contribution of different incompatibilities to additional stresses generated in a partial depth repair, and to identify the critical incompatibility criteria. Then, a guideline to design a performance-engineered repair mixture (PERM) for a material-compatible repair (MCR) was developed. Based on the results, thermal expansion compatibility between the repair material and the in-situ concrete and controlled drying shrinkage of the repair material are the two main compatibility criteria. The thermal expansion compatibility criteria can be achieved by a mindful selection of coarse aggregate type for the repair material. In addition, controlled drying shrinkage criteria can be achieved through internal curing. The results also indicate that using an MCR can reduce stresses induced at the bond interface by up to 50% when compared to that of conventional repair materials.
Performance engineered repair mixtures (PERM) for partial depth repairs
Sharifi, Naser P. (author) / Buettner, Nathanial R. (author) / Donnelly, Charles A. (author) / Vandenbossche, Julie M. (author) / Sachs, Steven G. (author)
2023-12-06
Article (Journal)
Electronic Resource
English
Field performance evaluations of partial-depth repairs
| Elsevier | 2010
Field performance evaluations of partial-depth repairs
| Online Contents | 2011
Field performance evaluations of partial-depth repairs
| Elsevier | 2011
Field performance evaluations of partial-depth repairs
| British Library Online Contents | 2011