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Stringless concrete paving comes to the Kansas and Iowa in two projects where changes in the traditional way of doing things leads to some advantages to both the contractors and the state.
Brian Morrow again looks at a court case that has ramifications for our industry.
Mixers -such as fly ash, silica fume, ground granulated blast furnace slag - added immediately before or during mixing can enhance quality, accelerate or retard setting time, enhance frost and sulfate resistance, control of strength development or improve workability and finishability. Or simply work with air entrainment or water reduction.
Harnessed to ropes, engineer/climbers can produce some very effective structural inspection of bridges high and low. These engineers can reach places where equipment cannot work. All they need is certification, experience and nerve.
Fracking trucks are heavy. Very heavy. But the search for natural gas must go on. Working to get the most out of the aging roads these trucks use is another essential job.
30- to 50- metric ton crawler excavators are versatile, yes, but man can they produce. This is Big Iron that really puts up impressive numbers.
We have extra pages of new products from major trade shows and elsewhere in our digital edition.