Scipediacontent: Scipediacontent moved page Draft Content 544070408 to Lipke 2018a

2021-02-01T21:04:48Z

Scipediacontent moved page Draft Content 544070408 to Lipke 2018a

Scipediacontent: Created page with " == Abstract == In recent years, new construction contract (functional and concession) forms were developed in German. For these
types of contracts, but also for variant..."

2021-02-01T21:04:41Z

Created page with " == Abstract == In recent years, new construction contract (functional and concession) forms were developed in German. For these types of contracts, but also for variant..."

New page

== Abstract ==

In recent years, new construction contract (functional and concession) forms were developed in German. For these types of contracts, but also for variant solutions under conventional tenders the possibility exists to abstain from a standardized structure design according to the RStO (guideline) and instead make an individual design. Therefore the guidelines for the analytical design of the construction of traffic areas with asphalt pavement have been developed and announced. By using the method of analytical design the layer thicknesses of the asphalt construction is primarily defined in dependence of the material properties of the used asphalts. To determine the required sizing relevant asphalt properties, these are essentially fatigue and stiffness, additional material investigations are necessary. The effort for these investigations significantly exceeds the effort for a initial type testing. When using a standardized construction for asphalt pavements, it is sufficient to settle in the contractual settlement compositional features and void content and compaction of the final layer and to check out during construction. Prior to the contractual agreements two key questions must be answered: First, how the material properties change in phase of initial testing in the laboratory, the production of the asphaltmixes and the effects of construction (asphalt-paver, rollers). This question was investigated in research-projects in which parallel to the classical contract management the required investigations have been made. The previous evaluations provide clues as to what asphalt properties do not change much, or where relatively safe can be inferred from the results of the initial type testing of the expected outcome of the built-layer and in which properties of this connection is not as stringent. The second question concerns the nature and extent of tests, which are necessary to check out the construction work. The procedure according to the ZTV-Asphalt (guideline) requires a test check each 6.000 m² produced surface. Due to the large number of cores to be removed and to be tested (about 15 per section) this procedure is not practicable and would already result to a variety of weaknesses in the new construction. In order to find a workable and mutually acceptable solution, possible solutions are considered in various research-projects. One of these possibilities to check out the performed construction work shall be presented in the paper and the results are discussed. The defined test grid in the ZTV-Asphalt (site-specific assessment criteria) will be maintained. However the full extent of testing to determine the design relevant properties of asphalt was not carried out for each field of test grid. Rather a reasonable allocation of the required number of asphalt tests to be carried out was made on several sections (and at one point the entire scope of investigation was carried out). In combination of all test results so there can be an assessment of the construction work in relation to the underlying design. This represents a reduction of investigation costs, labor and time effort but also less damage to the asphalt layers newly produced while maintaining the same quality analyzes of the obtained results.

== Original document ==

The different versions of the original document can be found in:

* [https://zenodo.org/record/1485100 https://zenodo.org/record/1485100] under the license http://creativecommons.org/licenses/by-nc-nd/4.0/legalcode

* [https://zenodo.org/record/1485100 https://zenodo.org/record/1485100],
: [http://dx.doi.org/10.5281/zenodo.1485099 http://dx.doi.org/10.5281/zenodo.1485099] under the license http://creativecommons.org/licenses/by-nc-nd/4.0/legalcode

* [https://zenodo.org/record/1485100 https://zenodo.org/record/1485100],
: [http://dx.doi.org/10.5281/zenodo.1485100 http://dx.doi.org/10.5281/zenodo.1485100] under the license http://creativecommons.org/licenses/by-nc-nd/4.0/legalcode

DOIS: 10.5281/zenodo.1485099 10.5281/zenodo.1485100

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Lipke 2018a - Revision history

Scipediacontent: Scipediacontent moved page Draft Content 544070408 to Lipke 2018a

Scipediacontent: Created page with " == Abstract == In recent years, new construction contract (functional and concession) forms were developed in German. For these types of contracts, but also for variant..."

Scipediacontent: Created page with " == Abstract == In recent years, new construction contract (functional and concession) forms were developed in German. For these
types of contracts, but also for variant..."