One of the great distinguishing features of Jaupavi is its own highly qualified and specialized laboratory, which allows us to carry out a thorough analysis of the soil, the materials and all the details of the projects. Only in this way can we guarantee quality, durability and the avoidance of losses and costs due to unforeseen events.
We perform various tests to control the quality of our materials and properties. To control our aggregates, we request granulometry, shape index and sand equivalent tests from suppliers in advance and later check them in our laboratory as soon as they arrive.
We also perform tests for durability, density, induced moisture determination, stickiness, lamellarity and qualitative detection of harmful clays of the smectite group in the aggregates with methylene blue.
When working with soils and granular materials, we use both HRB and MCT classification; we perform California Support Index (CBR) testing, trace dosage (single graded crushed stone or cemented crushed stone, soil-gravel, soil-gravel-cement, soil-cement, concrete), cement testing (fineness modulus), CP shaping and fracture, slump testing (slump). We also perform field tests: Proctor compaction, moisture and density testing.
For asphalt mixture, we work with batching and also tests in Marshall method, RICE test, bitumen extraction with NCAT oven, as well as all CAP tests: softening point, penetration, asphalt density, flash point, viscosity by rotation method (Brookfield), storage stability and springback for polymer-modified asphalts.
We control the moisture and granulometry of the aggregates in the asphalt plant, as well as the temperature of the CBUQ of each truck. We perform on-site quality control of the applied CBUQ by performing tests to determine the degree of compaction with an electromagnetic densimeter, measuring deflections with a Benkelman Beam, Longitudinal Irregularity Index (IRI) with equipment MERLIN, and determining the macrotexture of the pavement by testing sand spots.