...Shinya Inazumi; Khin Nyein Chan Kyaw Chemical grouting has been widely used to reduce permeability, increase strength and stiffness, and mitigate hazards such as seepage-induced instability and liquefaction. However, its engineering performance remains difficult to predict due to the coupled...

...Maryam Meftahi; Yong Lu; Seyed Abolhassan Naeini; Barbara Schneider-Muntau This paper presents findings from an experimental study examining the effects of colloidal nanosilica ( CNS ) grouting on the behaviour of collapsible soil under monotonic and cyclic loading conditions. Drained and undrained...

...Stefano Collico; Giovanni Spagnoli; Toshiyuki Kamata Jet grouting is a commonly employed method for improving soil conditions, yet its design frequently involves uncertainties that might increase cost during construction projects. At preliminary phase design, it is common practice to infer local...

...Siamak Feizi, PhD; Eirik Nilsen, MSc; Anteneh B. Tsegaye, PhD; Kjell Karlsrud, PhD; Petter Fornes, MSc; Stefan Ritter, PhD When using jet grouting for soil stabilisation, effects of the installation process need to be evaluated. This could be particularly important for applications in challenging...

...Giovanni Spagnoli; Stefano Collico; Götz Tintelnot Chemical grouting is a technique where solution-based binders are used to improve both mechanical and hydraulic properties of the soil or rocks. The following research study shows an extensive laboratory programme where a polyurethane (PU...

...K. Boschi, PhD; D. Grassi, PhD; R. P. Castellanza, PhD; C. G. di Prisco, PhD Permeation grouting – injections at low-pressure values of either microfine cements or chemical products – is frequently adopted to increase the mechanical/hydraulic properties of soils, and standard design approaches...

... due to tunnel excavation in the soil mass. To achieve this aim, a two-component grout is often used to fill the annular gap. Determination of the amounts of ingredients in the two-component grout should be carried out in such a way that the injection materials will be able to fulfil the required...

...Hamidreza Khatami, PhD; Brendan C. O'Kelly, PhD, CEng, CEnv, MICE, FTCD The mechanical performance of microfine ground-granulated blast-furnace slag grouts for improving sandy soils was evaluated using unconfined compressive strength, drained triaxial compression and Brazilian tensile strength...

... carried out to simulate a soft soil improvement technique called CPR grouting (acronym for deep radial consolidation). The results allowed estimations of the parameters used in the design method, such as the consolidation potential, and evaluating the generation of pore pressures, injection pressures...

... ICE Publishing: All rights reserved 2021 failure grouting strength & testing of materials The mechanical behaviour of engineering materials is generally explained using constitutive models. Simple elasto-plastic models such as the Mohr–Coulomb model have gained wide acceptance due...

... calcareous sand at the optimum fibre content and fibre length increased by 717% and 115%, respectively. ICE Publishing: All rights reserved 2019 foundations granular materials grouting Figure 3. Calcium carbonate content in biocemented and fibre-reinforced calcareous sand samples...

... traditional grouting materials such as cement or chemical compounds (silicate, acrylates, acrylamides, polyurethanes etc.), biogrout employs gel-forming biopolymers or biomineralisation to act as binding or sealing agents for seepage control, erosion remediation, forming subsurface barriers, manipulating...

...Abbas Majdi, PhD; Parshan Shakerifar, MSc Grouting is one of the most commonly used techniques for improving mechanical and physical properties of in situ soils. Predicting the strength of cement-treated soils reduces uncertainties associated with quality control and the number of trial samples...

... projects, design and improvement of the mechanical behaviour of liquefiable soils is required. At a project site prior to construction, mitigation of the liquefaction risk for granular soils may be achieved by a number of soil improvement techniques, based on densification, grouting or draining...

...Adrian Kainrath, Dipl.Ing., Dr.techn.; Dietmar Adam, Dipl.Ing., Dr.techn.; Wolfgang Hornich, Dipl.Ing. Permeation grouting is a common technique for ground improvement and cement-based grouts are the most widely used grouting materials to fill the voids of granular soil, with the purpose...

... d. (k) Specimen 2 (sodium carbonate, high swelling bentonite), 28 d. (l) Specimen 3 (no sodium carbonate, low swelling bentonite), 28 d dredging & reclamation foundations grouting As the number of obsolete infrastructures being rebuilt has been increasing in recent years...

...Li Wang, PhD; Ruonan Ou; Gang Zheng, PhD In general, jet grouting is usually adopted in deep excavation projects to improve the soils inside and outside the pit to protect surrounding tunnels or building foundations. A cost-effective way is to keep the deformations caused by pit excavation within...

... located in the western zone of Rio de Janeiro, Brazil. The stiffening was achieved through the use of pre-fabricated vertical drains and radial deep consolidation grouting, a form of compaction grouting. In this study, the results of the site investigation, comprising laboratory and in situ tests...

... 2018 ICE Publishing: All rights reserved 2018 geotechnical engineering granular materials grouting The use of urease enzyme to deposit calcium carbonate (CaCO_{3) for the formation of biogrout in granular soils has typically relied on injection or percolation of liquid}...

... formation. In this study, an attempt was made to stabilise sand dunes by grouting with a slurry of lime–silica fume (L–SF) material. Dune sand samples were collected from northern Iraq. In situ field density of the soil was determined by sand-cone tests for moisture content, classification, compaction...