Potential for Silica-Based Solidification Materials as Soil Improving Agents

Inazumi, Shinya; Shinsaka, Takashi; Nakagishi, Yoshihiro

doi:10.21660/2017.32.6545

Cited by 2 publications

(13 citation statements)

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“…In addition, when trying to attain early solidification, there is a method of partially replacing the fine powder of blast furnace slag with ordinary cement. (4) Compared with the solidifying material using the heat-treating type of ES additive [7][8][9][10] developed in the past, there is a slight delay in terms of early solidification.…”

Section: Discussionmentioning

confidence: 99%

“…In addition, the cement-based solidifying material (hereinafter, C-type) used in the high-pressure injection stirring method was applied for comparison. Based on the previous tests [7][8][9][10], the solidifying material of the A-type has a slow initial speed of solidification, and early solidification is achieved by partially replacing the fine powder of blast furnace slag with ordinary Portland cement (hereinafter, ordinary cement). This study also compared and verified whether the solidifying material of the B-type had the same properties as above.…”

Section: Specimen Mixingmentioning

confidence: 99%

“…The mixing ratio of the target soil (S) and the slurry solution (M = W + B) was unified to S/M = 2.0 in terms of the volume ratio in all the proportions. The approximate value of the quantity of each material per 1 m 3 of target soil, in the case of an actual on-site construction, is as follows: The specimen preparation process was carried out in the same manner as in [7][8][9][10] by the following procedure.…”

Section: Specimen Mixingmentioning

confidence: 99%

“…The fine powder of blast furnace slag is pulverized blast furnace granulated Materials 2021, 14, 5169 2 of 14 slag produced as a by-product in steel production. The characteristics of this solidifying material include the following items [7][8][9][10]:…”

Section: Introductionmentioning

confidence: 99%

“…In a series of studies [ 7 , 8 , 9 , 10 ], the authors developed a solidifying material for ground improvement that contributes to a reduction in the amount of waste treatment by utilizing inorganic waste as a starting material. This solidifying material is composed of the fine powder of blast furnace slag and an additive developed independently.…”

Section: Introductionmentioning

confidence: 99%

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Applicability of Additives for Ground Improvement Utilizing Fine Powder of Waste Glass

Inazumi

Shinsaka²,

Nontananandh

et al. 2021

Materials

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As a solidifying material for ground improvement using inorganic waste as a raw material, the authors have been developing an additive mixture of the fine powder of waste glass containing a large amount of silica generated during the production of glass cullet and an alkaline aid (heat-treating type of “Earth-Silica; ES” additive). Furthermore, a solidifying material that solidifies by mixing this additive with the fine powder of blast furnace slag, which is a by-product of steel production, is also being developed. In this study, the authors reviewed the mixing process of the solidified materials, especially the one made with the heat-treating type of ES additive, omitting the heat treatment of the fine powder of waste glass and the alkaline aid and applying only the mixing treatment. As a result, a mixing type of ES additive was manufactured to simplify the manufacturing process, and the difference in the performance of the solidifying material, depending on the presence or absence of the heat-treating process during the additive manufacturing, was verified in terms of the effect on the solidifying action. Specifically, the solidifying materials to which the heat-treating type of ES additive and the mixing type of ES additive were added, respectively, were applied to the high-pressure injection stirring method, one of the ground-improvement methods. Various tests clarified the changes in viscosity of these solidifying materials over time and the acceleration of their solidifying rates when adding ordinary Portland cement separately.

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Section: Discussionmentioning

confidence: 99%