Injectability of Microfine Cement Grouts into Limestone Sands with Different Gradations: Experimental Investigation and Prediction

Markou, Ioannis N.; Christodoulou, Dimitrios; Petala, Eleni; Atmatzidis, Dimitrios K.

doi:10.1007/s10706-017-0368-8

Cited by 21 publications

(11 citation statements)

References 37 publications

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“…Mullins et al [25] furthered the study of the bearing mechanism of grouting after pile foundation in nonclay. Kleinlugtenbelt et al [26] and other scholars [27][28][29][30][31] conducted a grouting model test of loose sand and soil layers. Gothäll and Stille [32,33] led a study of expansion effect of cracks during grouting and also analyzed the interaction between cracks.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Diffusion Law of Post‐Grouting Slurry in Sandy Soil

Yang

Cheng

Chen

2019

Advances in Civil Engineering

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In order to study the diffusion law of grouting slurry in sand areas, the grouting of cement slurry in sand was analyzed by the indoor grouting test under different water-cement ratios, grouting pressures, grouting amounts, and soil qualities, and the law of the post-grouting slurry is obtained. The results show that the grouting method is affected by the grouting pressure, water-cement ratio, grouting amount, and soil quality. Under the same grouting pressure, the diffusion modes of different water-cement ratio grouts in sands with different permeability coefficients, which are mainly manifested as osmotic diffusion, are basically the same; under the same water-cement ratio, when the grouting pressure is relatively small, the diffusion of modes of slurry is mainly osmotic in sand. The diffusion radius of cement slurry in sand has a good power function relationship with grouting pressure, water-cement ratio, permeability coefficient, and grouting amount. And, the empirical function model of slurry diffusion radius is proposed by regression analysis. The research results provide a certain theoretical and experimental reference for post-grouting in sandy areas.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on Diffusion Law of Post‐Grouting Slurry in Sandy Soil

Yang

Cheng

Chen

2019

Advances in Civil Engineering

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“…In the last thirty years, new materials have been developed, which are presented as a counter-proposal to the use of chemical solutions for the above problems. These are extremely fine-grained cements whose suspensions have the ability to penetrate and reinforce even fine-grained sands [17,28,29,30,31,32,33,34]. The main advantage of these materials over chemical solutions is that they are composed entirely of minerals and thus do not cause adverse environmental effects.…”

Section: Fine-grained Cementsmentioning

confidence: 99%

The Development of Practice in Permeation Grouting by using Fine-grained Cement Suspensions

Christodoulou

Lokkas

Droudakis³

et al. 2021

AJET

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Grouting includes a range of processes that involve the injection of wet or dry materials into the ground to provide improved engineering properties. Common aims are to increase strength or stiffness or to reduce permeability within the mass of ground treated. This paper, mainly, addresses permeation grouting for the improvement of soils, in terms of strengthening or reduction of permeability, and compensation grouting for the displacement of structures during subsurface exploration. The grouts used to make permeation grouting are suspensions and chemical solutions. The suspensions penetrate well into soils with granulometry up to coarse sand. On the contrary, the chemical solutions penetrate satisfactorily in finer formations up to fine sands or coarse sludges. Because some chemical solutions are toxic or generally harmful to the environment and humans, an effort has been made internationally in recent years to replace them with inorganic fine-grained suspensions.

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“…According to previous studies on injectability of sand layers (Zhang [20], Mozumder et al [16], and Markou et al [21]), coarse sand and coarse-medium coarse sand have good injectability in which cement slurry can diffuse with the permeation mode. In this paper, coarse sand (particle size 1.25∼2.5 mm) and coarse-medium coarse sand (particle size 0.63∼2.5 mm) are used in test, whose basic physical parameters are shown in Table 2.…”

Section: Experimental Materialsmentioning

confidence: 99%

Research on Influence of Water‐Cement Ratio on Reinforcement Effect for Permeation Grouting in Sand Layer

Zhang

Chu

et al. 2020

Advances in Materials Science and Engineering

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In order to study permeation grouting reinforcement effect in the sand layer, a set of grouting test device is developed, which consists of a power device, a pressure-bearing slurry tank, and several test frames. Compressive strength, deformation modulus, and permeability coefficient are selected to be the evaluation index of grouting reinforcement effect. Grouting reinforcement effect under different water-cement ratio of cement slurry and curing time were measured. Eventually, under laboratory conditions, fitting formulas have been obtained which describe the quantitative relationship between reinforcement effect of permeation grouting and water-cement ratio and curing time. Results show that water-cement ratio of slurry has obvious effect on grouting reinforcement effect. Mechanical performance and impermeability of the grouted body are negative-correlated with water-cement ratio. There are two different destruction patterns for the grouted body in uniaxial compression process: global destruction pattern at low water-cement ratio and local destruction pattern at high water-cement ratio. If cement slurry at high water-cement ratio is permeated into the sand layer, water bleeding phenomena will appear and lead to inhomogeneous performance of the grouted body, with lower performance in the upper part and higher performance in the lower part of the grouted body.

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Injectability of Microfine Cement Grouts into Limestone Sands with Different Gradations: Experimental Investigation and Prediction

Cited by 21 publications

References 37 publications

Experimental Study on Diffusion Law of Post‐Grouting Slurry in Sandy Soil

Experimental Study on Diffusion Law of Post‐Grouting Slurry in Sandy Soil

The Development of Practice in Permeation Grouting by using Fine-grained Cement Suspensions

Research on Influence of Water‐Cement Ratio on Reinforcement Effect for Permeation Grouting in Sand Layer

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