By Athanassios Nikolaides
""The writer has crafted this ebook to function a ""one-stop centre"" for any info relating to road engineering. It starts off with uncooked fabrics for asphalt, combine layout, asphalt creation, development and upkeep. This e-book tells all and is useful to lecturers and training engineers as well.""-Professor Dr. Meor Othman Hamzah, Universiti Sains Malaysia""This is a brilliant booklet. It combines state-of-the paintings clinical wisdom with useful easy-to-use directions for street engineers.""-Professor Ezio Santagata, Politecnico di Torino, Italy""The writer has built a really good. Read more...
summary: ""The writer has crafted this publication to function a ""one-stop centre"" for any info on the topic of road engineering. It starts off with uncooked fabrics for asphalt, combine layout, asphalt creation, building and upkeep. This booklet tells all and is helpful to teachers and training engineers as well.""-Professor Dr. Meor Othman Hamzah, Universiti Sains Malaysia""This is a smart booklet. It combines state-of-the paintings clinical wisdom with functional easy-to-use instructions for road engineers.""-Professor Ezio Santagata, Politecnico di Torino, Italy""The writer has constructed a great
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Extra info for Highway Engineering : Pavements, Materials and Control of Quality
The test consists of the measurement of the penetration depth of a standard cone, with a mass of 80 g, forced into the soil material. By carrying out measurements at different moisture contents, a diagram similar to the number of blows versus moisture content is obtained. The liquid limit is determined as the moisture content at which the penetration depth is equal to 20 mm. Soils 13 The results obtained using this apparatus might be slightly different from those determined using the Casagrande device.
The short description of all pavement material testing procedures, required by European and American standards, as well as pavement design and maintenance procedures covered, does not, by any means, substitute or replace the standards and procedures developed by the xxxv xxxvi Preface various organisations and agencies. The reader is advised to always consult the standards or manuals developed when engaged in testing, design, construction or maintenance works. It is hoped that this textbook will not only contribute to the understanding of the wide and challenging subject of pavement engineering but also enable a more effective and economical design, construction and maintenance of pavements by employing updated standards, practices and techniques.
The determination of the optimum water content is carried out in the laboratory using various methods, the most common of which is the proctor method (compaction). 6 Proctor compaction test (modified) by American standards The proctor compaction test defines the relationship between soil density and moisture content with the aim of determining the maximum density at a certain moisture content, known as the optimum moisture content. According to ASTM D 1557 (2012) or AASHTO T 180 (2010), a sufficient mass of soil material is mixed well with water, is transferred to a mould and is compacted by a dropping rammer.