01390554

Component

This paper presents results of capillary rise tests carried out on marginal material, scoria, stabilized with two cementitious additives, GP (General Purpose) cement and GB (General Blended) cement up to 5.5% by dry weight. The test results indicated that capillary rise occurred along the entire specimen height of 345 mm (100%) for both specimens. The rate of rise and the water absorption reduced as the binder content was increased, and a similar trend was found for specimens cured at 7 days to 28 days respectively. The saturated hydraulic conductivity and porosity were found to be about 10-8 m/s and 0.3 respectively. The theoretical basis for the capillary rise is explained using the simple capillary tube model and water retention characteristics. A simplified model was developed to analyze the capillary rise tests. The model appeared to present the capillary characteristics reasonably well. On the basis of the theoretical approach presented, it was argued that the test is directly relevant to the field scenario where free water is available at the base of the pavement, but some other scenarios may be simulated approximately.

01390545

English

24p

2004

Transportation Research Board Annual Meeting, 83rd, 2004, Washington, DC, USA

Absorption; Capillarity; Cement; Laboratory tests; Mathematical models; Pavement performance; Properties of materials; Water

Absorption; Capillarity; Cement; Laboratory test; Material properties; Modelling; Pavement performance; Stabilization; Water

Materials

TRIS, TRB, ATRI

Aug 23 2012 4:55AM

• A comprehensive approach to balanced road space allocation in relation to transit priority: report on a project to develop a framework and guidelines for road space allocation in relation to transit priority in Melbourne, Australia
• Identification of motorcycles to aid speed enforcement
• Impacts on population exposure of greenhouse gas abatement measures on urban freight
• Nighttime conspicuity from the pedestrian’s perspective
• Public transport needs gap analysis: a new approach to measuring the spatial distribution of public transport needs and identifying gaps in the quality of public transport provision
• The performance of modern retroreflective material in the road traffic environment I: visual acquisition and sign legibility
• The performance of modern retroreflective material in the road traffic environment II: legibility of two classes of sign sheeting
• Using a 'ride to work' day event as a travel behaviour change initiative