To reduce the swelling pressure, there are many methods proposed such as the use of piles (Kay, 1990; Al-Busoda et al., 2017), chemical treatments (Lahmadi et al., 2013; Mahamedi and Khemissa, 2013) and soil mixture (Gueddouda et al., 2013; Fattah et al., 2017; Tiwari et al., 2019). (PDF) Expansive Soils - ResearchGate J. Geotech. Fun Facts with Brian Each year in the United States alone, expansive soils cause$2.3 billiondollars in damages to houses, roads, pipelines, and other structures. PDF Foundations on Expansive Soils - Ijert (2016). However, a number of clay minerals are expansive. One can interpret this ratio as an indicator of volume variation quantifying the degree of the soil compression (Cc) with respect to the soil swell (Cs). Advances in Computer Methods and Geomechanics pp 553563Cite as, Part of the Lecture Notes in Civil Engineering book series (LNCE,volume 55). The more of these minerals that are present, the greater the possibility of expansion when moisture is introduced. JCM | Free Full-Text | Role of Phytotherapy in the - mdpi.com ASCE Journal of Materials in Civil Engineering 24(6):707714, Yadu L, Tripathi RK, Singh D (2011) Comparison of fly ash and rice husk ash stabilized black cotton soil. Table 5 illustrates the vertical displacements and the final stress levels for both cases. Documented evidence of the existence of and difficult engineering problems associated with expansive clays and loessial soils is world-wide. *Note Expansive soils are known to expand to 10% or more (and this is not uncommon). Any opinions, findings, and conclusions or recommendations expressed in this material are those of authors and do not necessarily reflect the views of IIT Kharagpur. Expansive soils alsoshrink, compress when they dry out. Performing an oedometer test, those two indices can be determined for any saturated soil either expansive or non-expansive. Indeed, the mass of sand layer and porous stone is 167.2g and the oedometer ring diameter is 7cm. (A) Sand and an expansive soil S1 inside the oedometer ring. Fattah, M. Y., Salim, N. M., and Irshayyid, E. J. The volume of expansive soils changes according to their moisture content (Figure 1). Kaolinite is considered a pure clay because its composition is rather consistent. The second type of characterization uses data obtained from an inferential test either by direct or by indirect methods. Copyright 2022 Bouassida, Manigniavy, Azaiez and Bouassida. Case 1: For the first hour and a half, it is clear that case ones curve, shown in Figure 14A, keeps the swelling at a medium rate, approximately 38.4nm/s. Frontiers | New Approach for Characterization and Mitigation of the
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