TexSys

TexSys is a web-based application serving as a Texas Expert System for the selection of Hot-Mix Asphalt (HMA). TexSys is the product of a Texas Department of Transportation (TxDOT) study, TxDOT Project 0-4824: Guidelines for Selecting Asphalt Mixtures. It considers a number of factors (traffic volume and speed, desired performance characteristics, etc.) influencing the selection of HMA and recommends an asphalt mixture based on these. As such it is a tool for inexperienced or young engineers to assist them in selecting the right asphalt mixture for the job.Asphalt surfacing mixtures used in Texas Asphalt intermediate layer mixtures used in Texas TexSys is a web-based application serving as a Texas Expert System for the selection of Hot-Mix Asphalt (HMA). TexSys is the product of a Texas Department of Transportation (TxDOT) study, TxDOT Project 0-4824: Guidelines for Selecting Asphalt Mixtures. It considers a number of factors (traffic volume and speed, desired performance characteristics, etc.) influencing the selection of HMA and recommends an asphalt mixture based on these. As such it is a tool for inexperienced or young engineers to assist them in selecting the right asphalt mixture for the job. Project Survey TexSys covers the 4 major HMA types listed in the Department’s 2004 Standard Specification book. The 4 mixture types are: TexSys is intended to provide general recommendations based on the experiences of the engineering staff in the Flexible Pavements Branch of TxDOT’s Construction Division. It is not intended to be used as Department policy. Districts are encouraged to make mixture selection choices based on engineering judgment along with the recommendations provided in this guidance document. A number of factors should be considered when selecting which HMA mixture is most appropriate for the intended application. Some of the factors that should be considered include: