Tao proposed a method to quickly and accurately evaluate the dispersivity of fine-grained soil the mud ball test was substituted for the crumb test in that study. Conventional laboratory tests are cumbersome and laborious. Due to the complexity of dispersive soil, comprehensive identification is currently used to determine dispersivity. Holmgren believed that dispersive soil contained high sodium ions. The dispersion mechanism of dispersive soil is complex Flecther, Ingles, and Sherard suggested that exchangeable sodium ions and montmorillonite are the causes of soil dispersivity. Premkumar proposed that the presence of dispersive soil in embankment soils can cause contact erosion damage. Casagrande and Gutiérrez found that many reservoir dams using dispersive soil as impervious materials suffered from the piping effect. The results show that the Ca−Si treatment method based on the C-S-H synthesis principle can effectively eliminate soil dispersivity and improve disintegration resistance, which can theoretically support the reduction in contamination caused by traditional materials and improve engineering safety.ĭispersive soil easily disperses in deionized water or environmental water and has poor resistance to water erosion, meaning that it easily causes damage to pipe, gutters, and poses other severe threats to safety. The mechanism of Ca−Si-modified soil includes reducing the pH and exchangeable sodium percentage and generating calcium silicate hydrate cement. With the increase in the C/S, the disintegration resistance was reduced. The Ca−Si-modified soil had the best disintegration resistance at a 0.5 C/S and a 2% solid dosage. The final disintegration time of CaO-modified soil was shortened, and the disintegration rate was stable. The disintegration characteristics of CaO-modified and Ca−Si-modified soils are different from those of dispersive soil.
The dispersivity of Ca−Si-treated soil can be eliminated at a 0.5 C/S and a 1% solid dosage. The results show that the dispersivity of soil can be eliminated by using 0.8% CaO or 4% nanosilica. Pinhole, mud ball, dispersion, and disintegration tests were used to investigate the modification effect and physical, chemical, and microscopic tests were used to investigate the mechanism. A new Ca−Si-modified dispersive soil method was proposed based on the synthesis principle of calcium silicate hydrate (C-S-H). Current studies tend to search for environmentally friendly modification methods. This often causes environmental pollution. While the band would ultimately not do the soundtrack, the band would continue to use tracks from the session, “Soulless”, “Wasteland”, “Obedience”, and “We Are The Ones” for Disintegration Effect, and similar themes throughout the rest of the album’s recording process.Since dispersive soil has the characteristic of dispersing and disappearing when making contact with water, lime, fly ash, and cement are often used to modify dispersive soil in engineering. The band, unfamiliar with working under the confine of a soundtrack or concept album mentality, decided to write a few songs and see how they felt about it. Writing sessions first began upon the band being asked if they would hypothetically be open to the prospect of writing a soundtrack for a “post apocalyptic cyborg type movie”. The album was a departure from the prior two Lo-Pro albums, while half of the album retained the band’s usual melodic hard rock sound, half contained more screamed vocals more reminiscent of members Pete Murray and Neil Godfrey’s prior band, Ultraspank. Disintegration Effect is the third studio album by American hard rock band Lo-Pro.
0 kommentar(er)
