Aggregates for unbound and hydraulically bound materials for use in civil engineering work and road construction

Abstract Rapid development of road construction imposes requests on fast and quality methods for earthwork quality evaluation. Dynamic methods are now adopted in numerous civil engineering sections. Especially evaluation of the earthwork quality can be sped up using dynamic equipment. This paper presents the results of the parallel measurements of chosen devices for determining the level of compaction of soils. Measurements were used to develop the correlations between values obtained from various apparatuses. Correlations show that examined apparatuses are suitable for examination of compaction level of fine-grained soils with consideration of boundary conditions of used equipment. Presented methods are quick and results can be obtained immediately after measurement, and they are thus suitable in cases when construction works have to be performed in a short period of time.

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Fiber materials for the civil engineering. Growing demand of geo-synthetics for road construction.

Sen i Kikai Gakkaishi (Journal of the Textile Machinery Society of Japan) ◽

10.4188/transjtmsj.51.11_p598 ◽

1998 ◽

Vol 51 (11) ◽

pp. P598-P604

Author(s):

Yutaka NAGANO

Keyword(s):

Civil Engineering ◽

Road Construction ◽

Fiber Materials

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EARTHWORK VOLUMETRICS WITH UNMANNED AERIAL VEHICLES: A COMPARATIVE STUDY

Proceedings of the International Conference on Emerging Trends in Engineering & Technology (IConETech-2020) ◽

10.47412/klnq8966 ◽

2020 ◽

Author(s):

Raid Al-Tahir ◽

Travis Barran

Keyword(s):

Comparative Study ◽

Data Acquisition ◽

Unmanned Aerial Vehicles ◽

Civil Engineering ◽

Image Acquisition ◽

Road Construction ◽

Measuring Instruments ◽

Total Station ◽

Aerial Vehicles ◽

Acquisition Costs

The recent evolution of Unmanned Aerial Vehicles (UAVs) as measuring instruments has become attractive for many surveying applications in civil engineering including the volumetric computations of earthworks in the construction of a highway. The application of softcopy photogrammetry to UAV acquired imagery has the potential to reduce data acquisition costs, time and with suitable accuracy for earthworks mapping and volumetrics. Their performance, however, is not well understood for these applications. This investigation tests the ability of the UAVs and photogrammetric software to generate volumes for the layers of material used in road construction, as well as to analyse their accuracies and limitations. Specifically, this study assesses the feasibility of UAV-based surveying in generating volumes for general earthworks in highway/road construction. Additionally, the study compares the performance of UAV-based surveying to that of Total Station surveying. Performance is evaluated along the required time for image acquisition and generating the final products, the required personnel and overall cost of survey. A segment of the Churchill Roosevelt Extension to Manzanilla was used in the assessment.

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