Laboratory Practice

processing and finishing techniques.Durability of pavement is not 
outcome of traffic overloading and environmental influences, 
produce a durable road if quality of the applicable materials is not 
specifications, which describe the characteristics of road 
focus much on the Tanzania materials, which may fail to meet 
the overseas specifications but perform satisfactorily in the local 
accurately revealed and cared for.
equipment.Itshould also focus on the materials quality before 
Tanzania develop prematurely due to the use of substandard 
characteristics,but also being confident in handling and testing the 
environments.
functional and structural requirement with high degree of
comprise the knowledgeable staff,proper testing plan and
loading and environmental influences.This brings views that, for a 
materials, correct interpretation of the test results,timely delivery 
Quality control requires not only a good knowledge of materials 
confidence it must have appropriate and effective quality system, 
of the test results and familiarity with the construction techniques.
guaranteed by proper design, good quality of materials and proper 
construction techniques.
And American practices and environments. Such books do not 
judged instantly by the appearance of final product, but is 
road project to achieve quality product that would fulfil the 
In order to be appropriate and effective, quality system should 
construction materials, most of them are based on the European 
which screens out substandard materials and put a stop to poor 
being used to a permanent work and monitor closely the 
construction techniques.Specificationsalone are not enough to 
distress investigations reveal that most of the road failures in 
Therefore, it is the responsibility of local engineers to write down 
However there are many written books and standard 
Although majority of the road failures are normally reported as 
their experiences on the performance of local materials and set the 
materials and poor construction techniques rather than over
best practices of treating such materials.