Title: NEW TECHNIQUES FOR DESIGN AND QUALITY CONTROL OF PAVEMENT STABILIZATION IN BRUNEI DARUSSALAM
Abstract: Stabilization is used to cut down pavement thickness and to improve poor subgrade soils. When the subgrade soil is extremely soft (saturated and difficult to compact), stabilization can be used to improve it. The unsuitable pavement materials (poorly graded, plastic or weathered aggregate) can be made suitable by the addition of appropriate admixture. The cost-benefit analysis in the light of other alternatives will determine whether or not that stabilization is the optimum alternative. Recent design methods have introduced the empirical mechanistic approach for the design of stabilized pavements. This approach adopts resilient modulus to characterize the pavement materials. Unfortunately, most developing countries do not possess the necessary expensive equipment to test for modulus during design or construction. The implementation of imported empirical criteria for the estimation of the modulus is not recommended because of errors in estimation which might be as high as ten times. Therefore, local criteria should be developed for the assessment of the properties of the local materials under their local environment for design and quality control purposes. In this paper, new models and criteria have been developed for the properties of locally stabilized pavement materials and calibrated for future design and quality control. An economic analysis which was carried out to determine the cost effectiveness of pavement stabilization on soft soils has shown that it is the most cost effective alternative. (a) For the covering entry of this conference, please see ITRD abstract no. E204151.
Publication Year: 2000
Publication Date: 2000-01-01
Language: en
Type: article
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