ADCo is launching a high-performance water-reactive cold mix asphalt for permanent road repairs in harsh environments (wet, humid, heavy traffic) inspired by one of the Colas products portfolios named “Watercon®”, which has been developed and used globally.

The trend worldwide tends to substitute soft binders with harder grades, more adapted to sustain heavy traffic and high service temperatures. This paper focuses on the presentation of features and benefits of using 40/50 through case studies from two heavy-duty highway projects in Vietnam.

Microsurfacing using EcoGrip® (cationic quick-setting polymer-modified emulsion from ADCo) shows good performance even after over 1 year of service. The skid resistance and macrotexture are stable, and the pavements do not show any signs of cracking or shoving.

ADCo is involved in the rehabilitation of a 32-km segment of Highway 13, an important heavy-duty traffic road located in Southern Vietnam, connecting Ho Chi Minh to Cambodia. The road pavement was initially constructed in 2012. However, after 8 years of service under heavy traffic, the existing asphalt pavement started to show serious structural problems and rutting.

Watercon® is a high-performance water-reactive storable cold mix asphalt of ADCo that reacts with water to develop strength. It consists of aggregate and a special emulsion binder developed by ADCo. When Watercon® comes into contact with water, it immediately reacts and forms high mechanical strength for emergency road repairs in harsh conditions such as heavy loads, and high traffic density in rainstorm weather. It is used for Road surface repairs,  Filling technical trenches, Sealing around light poles, manholes, etc.