Concrete milling, paving & compaction

The demand for road construction material research and testing services in Kenya is expected to soar. The East African country is going through a construction boom, despite policy and financial challenges facing public institutions overseeing the research and testing operations in the transport industry. “Kenya is going through a construction boom and so is the demand for construction material testing services,” said Juma Ali Madzitsa, Geotechnical Lab Supervisor at SGS Kenya, a subsidiary of Swiss based in

Trelleborg has unveiled its innovative cast-in profile sealing system at the recent 2017 Rapid Excavation & Tunnelling Conference (RETC). The firm says that its latest cast-in profile sealing systems are designed to help ensure that tunnelling projects keep to project timescales and budgets. The design of the units also helps to shorten the production process of concrete tunnel gaskets according to the firm.

Fibre-reinforced concrete (FRC) has long been used for road pavements and is now a common material for civil engineering applications such as precast tunnel segments and sprayed concrete linings. However, testing FRC is challenging because the fibres – which are usually steel or macro-synthetic – rupture suddenly, causing the specimen to lose its bearing capacity. During this critical phase any sudden release of elastic energy by the frame of the testing machine may cause the premature rupture of the specim

In the US, considerable experience has been gained with thin white-topping (TWT), with the technique now being used in other countries as well. In the US hundreds of km of TWT is being paved every year, much of it across the mid-western states. A variation of white-topping is being used in Oregon to replace badly rutted asphalt truck lanes on primarily long uphill grades with durable, continuously reinforced concrete pavement (CRCP). Oregon has carried out several of these concrete inlay projects over the

CEMEX USA is playing a major role in the rebuilding of Florida’s I-4 highway. This 34km reconstruction of Central Florida’s main interstate highway is the largest and most complex infrastructure project currently underway in the state. The I-4 Improvement Project is upgrading interchanges and bridges to meet the needs of growing communities in Orange and Seminole Counties. CEMEX is supplying more than 4,900 truckloads of reinforced ready-mix concrete pipe and more than 294,000m3 of the 486,000m3 of ready-mi