STABILIZATION OF EXPANSIVE CLAY WITH HYDRATED LIME. AN EXPERIMENTAL SECTION

ESTABILIZACION DE ARCILLAS EXPANSIVAS MEDIANTE EL EMPLEO DE CAL HIDRATADA. UN TRAMO DE PRUEBA

A silty expansive clay subgrade was stabilized with lime. The clay had a high plasticity index (31), low bearing capacity value (CBR=4%) and high expansion characteristics (3t/m2); the plasticity index decreased rapidly over the first few days then more slowly later and reached a final value of 4; the CBR value reached 60 and expansion disappeared completely. The combination of filters and subgrade stabilized with lime prevented variations in the moisture content of the embankment. The selection of the percentage of lime was effective with the Texas highway department chart, taking into account the losses through lack of homogeneity caused by the construction techniques. Details are given of the construction system and output for each construction phase. This method of stabilization of the subgrade was judged to be the most economical for repairing a section of road showing cracks in the surfacing and deflections in the pavement structure through which the embankment clay was showing. (TRRL) IRRD abstract no 237469.

• Corporate Authors:

  Instituto Colombiana de Productores de Cemento

  Popayan,   Colombia 
• Authors:
  • Echevarria, J
• Publication Date: 1977-11

Language

• Spanish

Media Info

• Features: Figures; References; Tables;
• Pagination: 30 p.

Subject/Index Terms

• TRT Terms: Bearing capacity; Calcium hydroxide; Calcium oxide; California bearing ratio; Clay; Concrete curing; Conferences; Construction management; Embankments; Equipment; Expansive clays; Highways; Mix design; Pavements; Plasticity; Repairing; Road construction; Soil series; Soil stabilization; Soils; Subgrade (Pavements); Swelling soils; Tests
• Geographic Terms: Colombia
• ITRD Terms: 3087: California bearing ratio; 4177: Clay; 8024: Colombia; 8525: Conference; 3666: Construction method; 4702: Curing (concrete); 3674: Equipment; 2755: Highway; 4574: Lime; 4714: Mix design; 2955: Pavement; 5922: Plasticity; 3635: Repair; 3665: Road construction; 4156: Soil; 3689: Soil stabilization; 5203: Swelling (soil); 6255: Test
• Subject Areas: Construction; Geotechnology; Highways; Materials; Pavements; I33: Other Materials used in Pavement Layers;

Filing Info

• Accession Number: 00316208
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Conf Paper
• Files: ITRD, TRIS
• Created Date: Feb 6 1981 12:00AM