Standard on mixes’ electrical resistance spells critical quality control data

Sources: ASTM International, West Conshohocken, Pa.; CP staff

The proposed ASTM WK50586, Practice for Measuring the Electrical Resistance of Fresh Concrete standard will show how to sample a load, prepare a mix specimen for evaluation and conduct measurements—the latter yielding information on water-cement ratio, initial setting time, compressive strength, and overall concrete quality.

Read More

ASTM Committee C09 observes centennial in Toronto

Ontario mainstay St Marys CBM dispatched its 1939 International D-40-mounted mixer, with six-cylinder, 89-hp engine and 1.6-yd. Rex drum, to the Sheraton Centre Toronto, where C09 members commenced committee centennial observances.

A group of 150 members and stakeholders commemorated ASTM Committee C09 on Concrete and Concrete Aggregates’ 100th anniversary amid recent committee week activities in Toronto. Chairman Steve Parker (Chryso Inc.) and past chairs Doug Hooton (University of Toronto) and Tony Fiorato (PCA, CTL, Slag Cement Association) weighed in on Committee C09’s progress, credibility and vast influence on concrete practice.

Read More