A review of jet grouting practice and development     

Pierre Guy Atangana Njock  Jun Chen  Giuseppe Modoni  Arul Arulrajah  Yong-Hyun Kim 《Arabian Journal of Geosciences》2018,11(16):459

The jet grouting technique was originally initiated in the UK and progressively developed following the needs for larger geometries, ease of implementation, economic rationality, and better mechanical properties. This paper presents a comprehensive review of the development and practice of jet grouting through some fundamental concepts and relevant case studies. Subsequently, a laboratory testing program is performed to investigate the factors affecting the efficacy of the twin grouting system. The principal objective of this study is to define the suitable conditions for the jet grouting efficacy regarding economic rationality as well as quality control. For the first phase, a particular emphasis is placed on the properties of jet columns, site geological conditions, implementation methods, and the justification of each selected treatment option, while the second phase mainly focuses on the unconfined compressive strength (UCS) tests. It follows that the mono-fluid jet grouting system presents a valuable flexibility in dealing with complex configurations; yet, the double- and triple-fluid systems are more indicated for cases of mass treatments for which large portions of space must be treated and overlapping is fundamentally important for the reliability of the treatment. Furthermore, it was established that the efficacy of the twin-jet method primarily relies on the proper adequacy of some critical parameters, namely, the cement content, the water-cement ratio, and cement slurry-water glass ratio. In spite of some uncertainties inherently related to the technique, the UCS test represents the quintessential laboratory index for evaluating the mechanical properties of grouted elements, deriving jet grouting efficacy and the economics of jet grouts.  相似文献   

Conditioning clayey soils with a dispersant agent for Deep Soil Mixing application: laboratory experiments and artificial neural network interpretation     

Salvatore  Erminio  Modoni  Giuseppe  Spagnoli  Giovanni  Arciero  Michela  Mascolo  Maria Cristina  Ochmański  Maciej 《Acta Geotechnica》2022,17(11):5073-5087

Acta Geotechnica - Plasticity of clays makes Deep Soil Mixing (DSM) problematic due to the tendency of the material to congest the rotating blades, reduce mixing efficiency and remain...  相似文献   

A simplified vulnerability model for the extensive liquefaction risk assessment of buildings     

Paolella  Luca  Spacagna  Rose Line  Chiaro  Gabriele  Modoni  Giuseppe 《Bulletin of Earthquake Engineering》2021,19(10):3933-3961

Bulletin of Earthquake Engineering - The quantitative assessment of natural risks offers a rational strategy to protect communities, undertake cost effective mitigation and plan the organic and...  相似文献   

Liquefaction fragility of sewer pipes derived from the case study of Urayasu (Japan)     

Baris  Anna  Spacagna  Rose Line  Paolella  Luca  Koseki  Junichi  Modoni  Giuseppe 《Bulletin of Earthquake Engineering》2021,19(10):3963-3986

Bulletin of Earthquake Engineering - The damage on supply and drainage water networks is a serious cause of economic disruption for urban systems affected by earthquakes. Among various concerns,...  相似文献