A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
GROUND INJECTION MATERIAL AND GROUND INJECTION METHOD USING SAME
PROBLEM TO BE SOLVED: To improve ground of all particle size compositions from coarse-grained soil to fine-grained soil, and to increase water cut-off performance and shearing rigidity of the ground after the improvement.SOLUTION: The ground injection material is a non-alkaline suspension of aluminosilicate fine particles, composed of a clay mineral comprising aluminosilicate fine particles, an alkaline silica dispersion, and an acidic reagent. Thus, the alkaline silica dispersion and the acidic reagent react to form a silica sol containing siloxane bonds. In addition to it, an aluminum component is gradually eluted from the clay mineral to strengthen and stabilize bonds of the silica sol. Further, shrinkage of the material is decreased. These make it possible for voids in the ground to be solidified strongly for a long period and for shearing rigidity and water cut-off performance of the ground to be increased. Further, due to the clay mineral, a clay fraction of the ground increases and a 10% particle diameter of the ground decreases resulting in decrease in water permeability coefficient. Therefore, the water cut-off property of the ground can be further improved.SELECTED DRAWING: Figure 1
【課題】粗粒土から細粒土までのあらゆる粒度組成の地盤を改良し、改良後地盤の止水性及びせん断剛性を高める。【解決手段】本地盤注入材は、アルミノ珪酸塩微粒子からなる粘土鉱物と、アルカリ性シリカ分散液と、酸性反応剤とにより構成された、非アルカリ性アルミノ珪酸塩微粒子懸濁液である。このため、アルカリ性シリカ分散液と酸性反応剤とが反応して、シロキサン結合を含むシリカゾルが形成されるだけでなく、上記の粘土鉱物からアルミ成分が徐々に溶け出し、シリカゾルの結合が強固になり安定化する。更には、材料収縮が低減される。これにより、長期に渡って、地盤の間隙を強固に固結できると共に、地盤のせん断剛性及び止水性を向上することができる。又、粘土鉱物により地盤の粘土分が増加し、地盤の１０％粒径が低下して透水係数も低下するため、地盤の止水性を更に向上させることが可能となる。【選択図】図１
GROUND INJECTION MATERIAL AND GROUND INJECTION METHOD USING SAME
PROBLEM TO BE SOLVED: To improve ground of all particle size compositions from coarse-grained soil to fine-grained soil, and to increase water cut-off performance and shearing rigidity of the ground after the improvement.SOLUTION: The ground injection material is a non-alkaline suspension of aluminosilicate fine particles, composed of a clay mineral comprising aluminosilicate fine particles, an alkaline silica dispersion, and an acidic reagent. Thus, the alkaline silica dispersion and the acidic reagent react to form a silica sol containing siloxane bonds. In addition to it, an aluminum component is gradually eluted from the clay mineral to strengthen and stabilize bonds of the silica sol. Further, shrinkage of the material is decreased. These make it possible for voids in the ground to be solidified strongly for a long period and for shearing rigidity and water cut-off performance of the ground to be increased. Further, due to the clay mineral, a clay fraction of the ground increases and a 10% particle diameter of the ground decreases resulting in decrease in water permeability coefficient. Therefore, the water cut-off property of the ground can be further improved.SELECTED DRAWING: Figure 1
【課題】粗粒土から細粒土までのあらゆる粒度組成の地盤を改良し、改良後地盤の止水性及びせん断剛性を高める。【解決手段】本地盤注入材は、アルミノ珪酸塩微粒子からなる粘土鉱物と、アルカリ性シリカ分散液と、酸性反応剤とにより構成された、非アルカリ性アルミノ珪酸塩微粒子懸濁液である。このため、アルカリ性シリカ分散液と酸性反応剤とが反応して、シロキサン結合を含むシリカゾルが形成されるだけでなく、上記の粘土鉱物からアルミ成分が徐々に溶け出し、シリカゾルの結合が強固になり安定化する。更には、材料収縮が低減される。これにより、長期に渡って、地盤の間隙を強固に固結できると共に、地盤のせん断剛性及び止水性を向上することができる。又、粘土鉱物により地盤の粘土分が増加し、地盤の１０％粒径が低下して透水係数も低下するため、地盤の止水性を更に向上させることが可能となる。【選択図】図１
GROUND INJECTION MATERIAL AND GROUND INJECTION METHOD USING SAME
地盤注入材及びこれを利用した地盤注入工法
KANETAKA TETSUJI (author) / TOSHIDA YASUHARU (author) / OKADA KAZUNARI (author)
2017-02-09
Patent
Electronic Resource
Japanese
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