Reforço de Revestimento Asfáltico por meio de geogrelha fabricada com fibra de juta: estudo de uma proposta para o reforço de pavimento asfáltico por meio do uso de geogrelha de fibras de juta - Manaus/AM

Abstract

The main purpose of a pavement structure is to guarantee traffic at any time of the year and under any climatic condition, providing users with comfort and safety. The control of the reflection of cracks in pavements is fundamental for the good functional and structural performance of the road, as well as for the economic effectiveness of pavement restoration. In this context, the acceptance of the restoration system with natural jute fiber geogrid should be extended, as it provides an excellent alternative for the control of cracks in the asphalt layer. This paper presents the main structural benefits of including geogrids in asphalt paving works, within a technical-economic approach. This dissertation presents a proposal for the reinforcement of asphalt pavement with a geogrid manufactured with natural jute fiber. The use of this material was verified to avoid the reflection of cracks between an old coating and a new layer of asphalt. In order to evaluate the reflection of cracks, specimens prepared with asphalt mixture and natural jute fiber geogrid were tested. The specimens were subjected to induced moisture tests and the jute fiber under study was also characterized, Marshall's tests and fiber puching were performed in a small box simulating the asphalt layer in order to prove its strength and the durability of the asphalt pavement. With the results of the tests, it was obtained that the presence of a jute fiber geogrid can be incorporated in an asphalt layer, with that the jute fiber geogrid can prevent the reflection of cracks from the lower layer to the upper layer and increases the life usefulness and resistance of the layer.