Materials

Iterchimica’s cross-linking agents boost PMB performance

September 19, 2019

Cross-linking agents can vastly improve the stability and performance of polymer-modified bitumen (PMB), according to additive specialist Iterchimica. Modified bitumen can become unstable when it is stored inside a tank because the polymer rises to the top, meaning that the rheological behaviour of the bitumen varies through the tank. Cross-linking agents modify bitumen through a chemical action that stabilises the bitumen inside the tank to create a homogenous PMB and hence, a homogeneous asphalt concr

Adhesiveness control in asphalt mixes – from the project to production

September 19, 2019

Asphalt plant producer Ciber discusses asphalt mix properties The basic quality criterion of an asphalt mix is its adhesiveness; the adhesion capacity among materials. This adhesive capacity of the asphalt mix can be measured in the laboratory through qualitative or quantitative tests. The result of this analysis should be used as a reference for the improvement of the mix. In the laboratory this can be achieved using additives while at the plant it can be achieved using differing mixer technology an

Adhesiveness control in asphalt mixes – from the project to production

September 19, 2019

Asphalt plant producer Ciber discusses asphalt mix properties The basic quality criterion of an asphalt mix is its adhesiveness; the adhesion capacity among materials. This adhesive capacity of the asphalt mix can be measured in the laboratory through qualitative or quantitative tests. The result of this analysis should be used as a reference for the improvement of the mix. In the laboratory this can be achieved using additives while at the plant it can be achieved using differing mixer technology an

The UK is ready for rubber – Tarmac’s new asphalt solution

September 6, 2019

A huge surplus of waste tyres and a strengthening commitment towards sustainability from local authorities has prompted asphalt supplier Tarmac to invest in technology to add crumb rubber to its mixes "Local authorities want to be green, sustainable and environmentally friendly,” said Tarmac’s technical director Brian Kent. “I get the sense that these issues are more important to them now. I do think we are going to get some traction.” Around 40 million tyres are worn out every year in the UK. Though

XCMG expands range with new mobile crusher

August 28, 2019

XCMG is expanding its range of machines for the quarrying and recycling markets with the addition of a new mobile crusher to the line-up.

Trends in asphalt plant innovations

August 27, 2019

Key trends exist in the asphalt plant market, with manufacturers focussing on meeting customer needs and industry trends

Asphalt Institute Foundation – research request for new specifications

August 16, 2019

The Asphalt Institute Foundation (AIF) has released Request for Proposals (RFP) for research into asphalt durability. These next-generation specifications are intended to boost asphalt performance and sustainability. The RFPs are being funded through the AIF research committee. The research areas originated from discussions held at the inaugural AIF-sponsored Strategic Asphalt Research (STAR) symposium. The RFPs are available on the Asphalt Institute Foundation’s website at asphaltfoundation.org. The deadl

Concrete plant efficiency with new machines

August 14, 2019

New technology for concrete production will help boost efficiency New advances in concrete plant technology will help boost materials quality for users. The latest machines are more versatile and more productive than previous generation equipment. Ease of transport and fast assembly/disassembly and commissioning are other important factors for the latest plants. Research and development is an important issue for all manufacturers in the segment. With Liebherr for example having two new laboratory mixe

Iterchimica’s cross-linking agents boost PMB performance

August 1, 2019

Cross-linking agents can vastly improve the stability and performance of polymer-modified bitumen (PMB), according to additive specialist Iterchimica. Modified bitumen can become unstable when it is stored inside a tank because the polymer rises to the top, meaning that the rheological behaviour of the bitumen varies through the tank. Cross-linking agents modify bitumen through a chemical action that stabilises the bitumen inside the tank to create a homogenous PMB and, hence, a homogeneous asphalt conc

Ready for rubber: Tarmac’s UK asphalt solution

August 1, 2019

A huge surplus of waste tyres and a strengthening commitment towards sustainability from local authorities has prompted asphalt supplier Tarmac to invest in technology to add crumb rubber to its mixes. Around 40 million tyres are worn out every year in the UK. Some are burnt as fuel for cement kilns, others are turned to crumb rubber for use in sports fields and yet more are incorporated into items such as car mats. The surplus – sometimes as much as 120,000 tonnes annually - is often shipped abroad for