Effects analysis of higher flexural additives to increase crack resistance in rigid pavements

Road pavements basically must be able to serve traffic properly without any damage conditions that can endanger road users. The condition of road damage still occurs a lot starting with damage in the form of cracks. To overcome road damage, research needs to be done either in the form of selecting the right design material or design to reduce the risk of premature damage to road pavement. Therefore, there is a need for an approach where additives are needed that can increase the resistance to cracking in concrete pavement. With these background conditions, this study was conducted with the aim of looking for a mixture of materials and types of road pavements that can reduce the condition of cracks in concrete road pavements. The method used in conducting this research is by conducting laboratory testing by making test objects in the form of concrete with the addition of flekson material so as to make obtain flexibility properties. The test is carried out by assessing the crack pattern of the specimen with different levels of flekson. The analysis method used in this study is the analysis of the variant method, while to determine the difference in cracks in the material added to the flekson additive using the regression method. The results of the study found that with the addition of flekson additives, the value of cracks in the concrete road pavement will decrease. Flekson levels that have a good influence on the condition of concrete road pavements. The optimum flekson content in the concrete mixture is 1.5 %, if the flekson content mixed exceeds that it will further reduce the flexural strength of the concrete. Regression modeling results of flekson content and crack width relationship y=0.6x+5 with R2 equal to 0.9529