Single-wall fullerene nanotubes were converted from nearly endless, highly tangled ropes into short, open-ended pipes that behave as individual macromolecules. Raw nanotube material was purified in large batches, and the ropes were cut into 100- to 300-nanometer lengths. The resulting pieces formed a stable colloidal suspension in water with the help of surfactants. These suspensions permit a v...

Numerous factors affect the soil pressure distributions around buried pipes, including shape, size, and stiffness of pipe, burial depth, surrounding soil. Additionally, to some extent, a pipe can benefit from arching effect, where overburden surcharge at crown be supported by adjacent As result, only needs support portion load that is not transferred This paper presents numerical investigations...

The internal structure of steel cylinder concrete pipe in large buildings is complex. Traditionally, the safety monitoring method unable to accurately monitor situation every stress point structure. Therefore, wireless sensor network with practical value field building was introduced. A algorithm for points pipeline put forward. distribution law circumferential prestress produced by wire on cor...

The connection method of lengthening the steel tube hollow concrete-filled sandwich circular tubes and threaded connections is proposed. length, depth position are basic parameters. Twelve concrete pipes with were designed subjected to axial compression tests. compressive loading–longitudinal displacement curves, loading strain curves failure mode specimens analyzed, effects different parameter...

Multiscale modeling for cement-based materials, such as concrete, is a relatively young subject, but there are already a number of different approaches to study different aspects of these classical materials. In this paper, the parameter-passing multiscale modeling scheme is established and applied to address the multiscale modeling problem for the integrated system of cement paste, mortar, and...