In situ modification of active clays for shallow foundation remediation

In situ modification of active clays for shallow foundation remediation Pengelly, Arthur Primary Author mixed material bibliography ASCE 2001 en English Expansive Clay Soils And Vegetative Influence On Shallow Foundations This paper presents a tested technique, which involves using a aqueous solution of potassium and ammonium ions to treat expansive clay soils in remediation of damaged structures. The technique relies on reactions between the solution ions and the clay soil to adjust rheological properties of the clay. Mechanism by which potassium and ammonium treatment reduce swelling motions and pressures are described herein. A case history of a forty-five year old building damaged by both heave and shrinkage movements is presented. Identification of movement sources, reactivity laboratory testing of site soils with the aqueous solution, predicted injection and long term movements, description of the injection modification technique, verification quality assurance testing and foundation performance are presented EXPANSIVE CLAYS 624.151.5(063) Perpustakaan Direktorat Bina Teknik Jalan dan Jembatan Direktorat Jenderal Bina Marga - Kementerian Pekerjaan Umum (NPP: 3273244A00000001) 0000006652 My Library 6382 machine generated