Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Stabilization of lateritic soils with phosphoric acid
Summary This paper describes a laboratory study on the stabilization of lateritic soils with phosphoric acid-$ H_{3} $$ PO_{4} $. This method is most promising for road and airport pavement construction in tropical regions where fine textured lateritic soils (red clays and silts) occur over large areas. The iron and aluminum phosphates formed are hard and insoluble. The main source of iron is free iron oxide, and the aluminum sources are free aluminum oxide, exchangeable cations and clay minerals (hydrated aluminum silicates). Four different soil samples were studied, but the most comprehensive study was carried out with a lateritic soil evolved from weathered basaltic bedrock. The variables of the test specimens were: percentage of acid, moulding water content, compaction energy, and curing time. Strength tests performed were the axial or unconfined compression test and the indirect tensile or diametrical compression test. With 5% of phosphoric acid to dry weight of soil, values of compressive strength around 4.0 MPa were obtained after 28 days curing.
Stabilization of lateritic soils with phosphoric acid
Summary This paper describes a laboratory study on the stabilization of lateritic soils with phosphoric acid-$ H_{3} $$ PO_{4} $. This method is most promising for road and airport pavement construction in tropical regions where fine textured lateritic soils (red clays and silts) occur over large areas. The iron and aluminum phosphates formed are hard and insoluble. The main source of iron is free iron oxide, and the aluminum sources are free aluminum oxide, exchangeable cations and clay minerals (hydrated aluminum silicates). Four different soil samples were studied, but the most comprehensive study was carried out with a lateritic soil evolved from weathered basaltic bedrock. The variables of the test specimens were: percentage of acid, moulding water content, compaction energy, and curing time. Strength tests performed were the axial or unconfined compression test and the indirect tensile or diametrical compression test. With 5% of phosphoric acid to dry weight of soil, values of compressive strength around 4.0 MPa were obtained after 28 days curing.
Stabilization of lateritic soils with phosphoric acid
Medina, J. (Autor:in) / Guida, H. N. (Autor:in)
1995
Aufsatz (Zeitschrift)
Englisch
Stabilization of lateritic soils with phosphoric acid
| British Library Online Contents | 1995
Cement stabilization of lateritic soils
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The potentials of lime stabilization of lateritic soils
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Stabilization of lateritic soils by extensible fibre reinforcement
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Phosphoric acid stabilization of soils -- Review of literature
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