Evaluating the Effect of Fines on Hydraulic Properties of Rammed Earth Using a Bench Scale Centrifuge

Galaa, Abdullah; Emidio, Gemmina Di; Malengier, Benny; Peiffer, Herman; Flores, Ramiro Verastegui; Cornelis, Wim

doi:10.1007/978-3-319-61931-6_17

Cited by 1 publication

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“…By following the results presented in Figures 4 and 5, three analytical solutions are proposed to calculate the initial average RSI value (RSIav-0), average hydraulic conductivity (Kav-0), and pushover strength (Pus-0) of the newly built URE walls: The experimental results from Galaa et al [92] are used to verify the ability of the proposed approach to predict the hydraulic conductivity of an unstabilized rammed earth (URE) sample. Equation ( 48) is used for calculation since the cylinder sample was in the saturated condition (initial saturated at t = 0 days).…”

Section: Initial Thm Propertiesmentioning

confidence: 99%

Factors Influencing the Thermo-Hydro-Mechanical Behavior of Unstabilized Rammed Earth Walls

Zhang

Nowamooz

2022

Materials

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Waterproof capacity, thermal isolation, and pushover strength are the main characteristics when an unstabilized rammed earth (URE) wall is constructed. In this paper, a comprehensive numerical simulation model is built to evaluate the effect of 15 different factors on those three aforementioned properties of URE walls. The simulation results show that the hydraulic, thermal, and mechanical properties of the wall are interconnected. It is found that the waterproof capacity of the wall can be mainly improved by increasing the dry density, decreasing the rising damp effect, and reducing the fine content value of the wall. The thermal insulation characteristic of the wall can be ameliorated by increasing the wall thickness and reducing the rising damp effect, fine content, and dry density. In addition, the pushover capacity of the wall can be strengthened by increasing the wall width, fine content, wall thickness, and vertical load and decreasing the rising dampness and wall height. In addition, time has a positive effect on the waterproof capacity, thermal insulation, and mechanical strength of URE walls. These properties change significantly in the first 100 days and then stabilize after 180 days for a typical URE wall. Eventually, a new theoretical approach is proposed to predict the long-term THM behavior of URE walls by considering the 15 factors in its framework.

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Section: Initial Thm Propertiesmentioning

confidence: 99%