EDS survey finds more than half of UK engineering design firms face skills shortages

More than half of engineering design firms – mostly based in the UK – polled in August 2021 by The Engineering Design Show (19-20 October, Coventry) claim they are finding it difficult to recruit and/or retain staff with the right skills and believe there is a problem across the industry in doing so. Over half…

Uplift Resistance of Pipelines Buried in Compacted and Uncompacted Sands Using Field Tests | Journal of Geotechnical and Geoenvironmental Engineering

Abstract Upheaval buckling (UHB) is a common design issue for buried pipelines when the out-of-straightness of the pipeline combined with the high axial compressive forces induced by the extreme operating conditions causes the pipeline to buckle upwards. It is common to mitigate UHB for onshore pipelines by having deeper burial depths. However, a more practical…

Anionic, Cationic, and Nonionic Surfactants Used as Dispersing Agents for Carbon Nanotubes and Their Effect on Cement Hydration | Journal of Materials in Civil Engineering

Abstract This work studies the hydration kinetics of portland cement pastes blended with multiwalled carbon nanotubes (MWCNTs) aqueous dispersions. Anionic, cationic, and nonionic surfactants—i.e., surfactants that have different charged functional groups in their structure—were used as dispersing agents. MWCNTs in powder form were dispersed in deionized water with sodium dodecyl sulfate, cetylpyridinium chloride, and triton TX-100. Three…

Effects of Calcium-Based Deicing Chemicals on the Durability of Concrete Products | Journal of Materials in Civil Engineering

Professor, Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials and School of Materials Science and Engineering, Univ. of Jinan, Jinan, Shandong 250022, China; Professor, Western Transportation Institute and Dept. of Civil Engineering, College of Engineering, Montana State Univ., 2327 University Way #6, Bozeman, MT 59717-4250 (corresponding author). Email: [email protected] Source link

Uplift Behavior of Pipes and Strip Plate Anchors in Sand | Journal of Geotechnical and Geoenvironmental Engineering

Abstract This paper presents an experimental study on the uplift behaviour of both pipes and strip plate anchors buried in sand. A total of 24 plane-strain uplift tests were performed using an image-based deformation measurement technique, by which the influences of anchor/pipe embedment ratio, sand relative density and pipe roughness on the load-displacement responses and…

Physical and Antiaging Properties of Rodlike Nano-ZnO–Modified Asphalt | Journal of Materials in Civil Engineering

Abstract Asphalt aging is the main cause of fatigue failure of asphalt pavement. The performance of rodlike nano-ZnO is better than that of nano-ZnO in all aspects, and rodlike nanomaterials can reduce the agglomeration phenomenon of powder like nanomaterials in asphalt. Therefore, in this paper, rodlike nano-ZnO particles were added to asphalt to improve its…