06 June 2019

India: Transport and Small, and Medium Enterprises (MSME) minister Nitin Gadkari says that cement producers have raised their prices without justification. He alleged that input prices for the industry had not increased and speculated that the companies acted ‘like a cartel’, according to the Times of India newspaper. He added that the higher cost of cement was negatively affecting road and affordable housing construction.

Gadkari said he has asked his officials to intervene in an on-going case in the Supreme Court and also explore the option of approaching the Competition Commission of India. The National Highway Builders Federation has also sought government intervention over the issue.

Mexico: A team led by José Iván Escalante Garcíaat at the Saltillo unit of the Center for Research and Advanced Studies of the National Polytechnic Institute (Cinvestav) is researching the use of volcanic ash in making blended cements and concrete. Volcanic ash is being considered to reduce the clinker factor of cement due to its abundance, low cost and its appropriate chemical composition. A clinker substitution factor of up to 80% has been achieved using volcanic ash. The research group has developed 15 alternatives to Ordinary Portland Cement (OPC) using waste or materials or minerals.

US: Terex MPS has launched the TG series of cone crushers as part of its Cedarapids range. The bronze bushing spider bearing cone product is intended to complement the company’s MVPX Series (screw type cone) and the TC Series (floating bowl cone).

The new spider bearing range will consist of four models focused on the aggregate and recycling industries: the TG120 (120HP); TG220 (220HP); TG320 (320HP); and TG420 (420HP). Each model is available in two versions: the TG (tertiary) and TGS (secondary). There will also be two larger models available for large capacity mining and quarrying applications: the TG820 (820HP) and the TG1020 (1020HP).

France: Cemex has supplied over 0.3Mm³ of ready-mixed concrete and more than 0.55Mt of aggregates for the Grand Paris Express project over the past three years. It has used mobile on-site concrete plants and a local network of 21 plants in Île-de-France to support the large-scale railway infrastructure scheme.

"The Grand Paris worksites present a daily challenge to deliver ready-mix concrete on time, supply aggregates to our production sites, and move earthworks from the stations and tunnels out of Paris,” said Benjamin Lecendrier, Major Projects Director at Cemex France.

The Grand Paris Express worksites on metro lines 11, 14 and several sections of line 15 South have involved most of Cemex’s staff in the Île-de-France region, with four full-time operatives working in a dedicated unit. Given the scale of operations, logistical organisation is a challenge, with the twin demands of delivering construction materials and removing 40Mt of earthwork by 2030.