China
Africa
Explore chapters and articles related to this topic
Structures in maritime locations
Published in A. M. Sowden, The Maintenance of Brick and Stone Masonry Structures, 2020
From the early use of stone flags and setts for paving port areas, through a long period of replacement by concrete or bituminous surfacings, treatment has now come full circle in many places where the use of brick or block paving is becoming widespread and fashionable. With the increase in wheel loads of port vehicles and equipment and the use and stacking of containers there is some justification for the use of block paving for ease of re-levelling and modification. Maintenance of these surfaces is now a significant commitment, although the blockwork is usually laid dry and presents its own individual maintenance requirement.
Multivariate analysis of user perceptions about the serviceability of urban roads: case of Barranquilla
Published in International Journal of Pavement Engineering, 2021
Julián Arellana, Luis Fuentes, Joyce Cantillo, Vilma Alvarez
The average length of the selected sections was close to 120 metres; this considering that the length of pavement sections in urban environments is mainly defined by intersections. It is important to note that this study is carried out on urban roads and, therefore, there are certain limitations in the strict implementation of the ASTM procedure. In terms of pavement type, 75% of the sections were rigid pavements, 10% were flexible pavements, 10% were block paving, and 5% belong to a combination of different types (flexible/rigid, block paving/rigid). More details on the road section characteristics can be found in the road inventory table presented in the annex of this document. Table 1 presents the overall details of the surface distresses evaluated on the selected pavement sections.
Finite element modelling approach to determine optimum dimensions for interlocking concrete blocks used for road paving
Published in Road Materials and Pavement Design, 2019
Dhanushika Gunatilake, W. K. Mampearachchi
The rapid process of urbanisation which occurred during the past centuries resulted in an intense construction of road and related infrastructure around the globe. The road designers are, therefore, seeking for innovative construction methods which are economical and durable. Although several road surfacing materials have been used over the years, interlocking concrete block paving (ICBP) has proved to be a better alternative than the conventional paving materials (asphalt and concrete), due to its lower life cycle cost (Mampearachchi & Gunatilake, 2013; Rollings, 1983). ICBP consists of small brick size concrete block units embedded in a bed of sand with a gap in the joints which is also filled with the same material of sand. The whole structure is supported by base/sub-base and subgrade. The horizontal movement of blocks is restrained by the edge supports (curbs etc.). The load applied on the road surface is transferred to the adjacent blocks and then to the substructure of the pavement. Therefore, the interaction between the blocks, sand joints and support conditions is essential to achieve efficient pavement designs (Concrete Manufacturing Association, 2004).
A comparative study on structural design of plain and roller-compacted concrete for heavy-duty pavements
Published in Road Materials and Pavement Design, 2023
Other types of concrete pavement utilised by the Spanish Method include vibrated-cement concrete, continuously-reinforced concrete, steel fiber-reinforced concrete, precast concrete slabs, and concrete block paving. Remarkably, the recommended RCC thickness in this method is nearly identical to that for the vibratory cement concrete pavement type.