Focused on the evolution of materials, equipment and embodiments of surface treatments. It includes history in Uruguay and a current comparison with the situation between our country and one of the leaders in the world in this technology, New Zealand.

Although single or double treatments are commonly known, there are a variety of alternatives depending on the application, the expected result and materials used warranting particular names for each technology.

Treatments presented here are mostly taken from the Australian and New Zealand experience. the novel locked multiple treatments are also presented, Bitafal patented technology in the US and Uruguay.

It includes the requirements and demands of aggregates and binders used in surface treatments, detailing quality tests and proposing specifications. This chapter specifically delves into emulsions, their chemistry and their correct use.

The different ways of selecting surface treatments according to traffic, maintenance capacity, road safety criteria, surface condition and climate are presented. It is hoped that the reader can, with the information available, select the best type of treatment, aggregate and binder to achieve the longest useful life.

The lifetime of treatment depends primarily on the quality of the surface on which it is supported. To do this, this chapter delves into the necessary quality of the base and the various previous repairs necessary to apply the treatment. It is including the importance of using stabilized and recycled binders and the synergy achieved with treatments to achieve high-quality pavements.

Chapter 7: Building and best practices.

Once the type of treatment and materials have been selected, as well as the surface ready, we proceed to the execution according to the design made. This chapter presents the necessary equipment, the best practices for each stage of the execution of the different treatments, as well as guides for the correct calibration of the equipment.

As in any activity, there may be premature failure and you must identify them know to solve the detected problem and to prevent it from happening in the future. In this chapter the most common failures of the treatments are presented as well as different alternatives for localized repairs or full width.

- Chapter 6.2.1: Change from the rule of eighth to the rule of tenth for the calculation of the emulsion rate in the direct experimental method.

- Chapter 6.2.3.9: At the end of the dosing of the double treatment by Austroads method, a clarification was incorporated for irrigations executed less than 72 hours apart. “It is recommended that the dosage of aggregates and binder of Irrigation A be reduced by 30%. In this way, it is favored that both risks generate better interlocking ”.

- Chapter 8.3: In stone loss faults, the detachment of aggregate B is incorporated in double treatments.

- Chapter 2.7.1: Inclusion of curing irrigation for stabilized bases within anti-dust irrigation.

- Chapter 2.7.6: Unification of nomenclature to cold "microagglomerates" (microsurfacing).

- Chapter 3.4.4: Change in Figure 3.18 incorporating emulsion line performance for different traffic and pavement temperatures.

- Chapter 4.2.2.2: Inclusion of a map with the recommended asphalt penetration degrees for Latin America.

- Chapter 4.4.3: Correction in the life cycle diagram of a pavement with surface treatments.

- Chapter 7.4.6: Inclusion of optimal compaction in stabilized bases.

- Chapter 8.5.1: Change to the application of “quarry powder” instead of “sand”.

- Appendix G: Change in Table G1 and Figure G1, including the suggested emulsion for different traffics and climatic regions.