Synthesis: Accelerating Implementation of Research Findings to Reduce Potential Concrete Pavement Joint Deterioration

Abstract

JOINT TRANSPORTATION RESEARCH PROGRAMThe Joint Transportation Research Program serves as a vehicle for INDOT collaboration with higher education institutions and industry in Indiana to facilitate innovation that results in continuous improvement in the planning, design, construction, operation, management and economic efficiency of the Indiana transportation infrastructure. AbstractDistress has recently been observed in the joints of some concrete pavements, primarily in the wet-freeze states. This distress often begins in longitudinal joints, followed by transverse joints and results in the significant loss of material from the joint area. Although it may only affect approximately 10% of the concrete pavements system-wide, it greatly reduces the service life and increases maintenance costs of the pavements it effects. Primary issues that emerged from studies on this phenomenon include the importance of the timing of joint sawing, the width of the joint opening, degree of concrete or joint sealing, drainage and degree of saturation of the concrete at the joint, quality of the air void system, role of deicing chemicals, quality of curing, and the degree of restraint at the joint. Although this broad collection of issues implies that we still lack complete understanding of all causes of joint deterioration, it also makes it pretty clear that the observed damage is a result of combination of several factors. This study synthesizes completed research related to concrete pavements joint deterioration and provides information to advance the knowledge and understanding of the variables involved in in this deterioration process and suggests the best practices that can lead to its reduction or mitigation. 17.

Utilizing Nano Silica to Reduce Calcium Oxychloride Formation in Cementitious Materials

“…This damage has also been seen by several other states (28). A series of practical recommendations have been made to reduce the potential for this damage (29).…”

Predicting Spacing Factor in Hardened Concrete Using the Fresh Concrete Measurements

“…This excess pressure experienced over multiple freeze-thaw cycles results in microcracks (7). Over time, the microcracks coalesce to form internal cracking, surface scaling in CP, or both (8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18). Deicing salts are used to minimize snow accumulation and ice formation to maintain safe driving conditions on roads and bridges during snowy weather.…”

“…Ensuring the use of durable aggregates (and thereby eliminating/minimizing damage from D-cracking), researchers have tried to understand the problem associated with frost damage of the paste matrix and design preventive measures (8,9,11,18,24). In the early 1950s, air voids entrained through the cementitious paste were found to be effective in minimizing freeze-thaw damage in concrete (8,9,(25)(26)(27).…”