Abstract:
The purpose of the study was to develop guidelines for construction of low volume
concrete roads in Sri Lanka. It describes the most suitable way of preparation of subgrade,
subbase, mixing and pouring of concrete, construction of shoulder and maintenance of
concrete pavements. A survey was carried out to study current concrete road construction
practice and identify their advantages and disadvantages. Incorrect construction of
contraction joints were also observed in most of roads during the site visit and special
attention was given to develop a new method to construct them. An experiment was
carried out to study effective curing using coir dust and saw dust. The spraying Frequency
of water for curing was determined through that experiment. A special tool was developed
to measure surface undulation on local concrete pavements. A comparison of various
kinds of concrete producing methods and their performance were included in the report.
"Check lists" have been introduced for most of activities to enhance the quality of the
pavement construction. Quality and cost control techniques in the field of low volume
concrete road construction in Sri Lanka are also described.
IV
