Concrete milling, paving & compaction

CEMEX is supplying a special grade of concrete for use on a busy logistics centre in Mexico. The order has been for 21,500m3 of roller compacted concrete (RCC) to pave all of the roads for the new terminal of ALA Transportes, a division of Grupo Transportes de Monterrey (GTM) - the largest trucking company in Mexico. The trucking firm needed a tough and durable concrete grade to be able to cope with the loads exerted by the movements of around 400 heavily laden trailers/day at the facility.

Enhancing safety by the use of dust collection systems for dowel pin drills - *Rob Minnich. The problem posed by silica dust is a major topic for discussion throughout the US construction industry at present. Enforcement of the Occupational Safety and Health Administration (OSHA) final respirable crystalline silica standard began on September 23rd, 2017, bringing the topic into the mainstream. Although it was developed to protect the health of American workers, the new rule has a much wider significance

Mobile BarrierMobile Barriers has developed a crane with a hook-and-bucket setup for the company’s Mobile Barrier MBT-1. The crane-and-bucket combination is positioned on its own 3m removeable wall section and provides a 9.15m reach and a capacity of 3900kg at base and 680kg at 9.15m. The unit can be operated from the ground or bucket via wireless controls. The bucket can be rotated out of the way or removed when not in use. Physical Stop points ensure that the crane and bucket do not encroach on live lanes

With over £300 billion of investment in infrastructure planned over the next four years in the UK, materials testing firm CET is gearing up to service a lot more projects – Kristina Smith visited the newest laboratory near Heathrow to find out more. The CET Group has ambitious plans. Over the next four years it wants to double the size of its business, which in the last year turned over £27 million. “There’s a lot of positivity out there,” said Gary Corrigan, managing director of the group’s infrastructu

Ownership of the Power Curbers and Power Pavers business making concrete slipformers has now changed hands, for an undisclosed sum. Power Curbers was established by the Messinger family and Dyke Messinger will remain in charge of the company for the foreseeable future, maintaining its corporate direction. The business was acquired in a private deal between the Cornwell and Messinger families as an investment for the future by the Cornwell family, which is also local to the Power Curbers facility in the US.

Huge numbers of construction machines as well as plant and equipment are working overtime, backed by mammoth manpower, to meet the targeted completion deadline of March 2018 for India’s Eastern Peripheral Expressway (EPE). The 135km arterial route is being built with six lanes and surrounds India’s National Capital, Delhi, its National Capital Region (NCR) and the industrially developed North Indian states of Haryana and Uttar Pradesh.

How best is it possible to assess the state of concrete in a road pavement, bridge deck or tunnel wall? One of the most reliable ways is to take a core of concrete from the structure to analyse and test in the laboratory. One downside to this method is that doing the test creates weak points in the structure that must then be repaired. Another is that the frequency of such cores cannot be too great – so it is possible that some problem areas will be missed. New technologies from the world of geospatial eng

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