Verifi Concrete Quality Blog

Posts Tagged ‘contractor’

Load of the Week | Waiting to Pour Concrete

by Verifi

Today’s Load of the Week arrived on site 25 minutes after batching.  The contractor initially discharged a small amount of concrete upon arrival.  After a 30-minute delay, the contractor began to pour the remaining concrete.

Verifi continued to manage the load during this delay by automatically adding water so that when it was time to pour concrete, the slump was on target.  The driver followed prompts from Verifi to mix at high speed after water additions, per specification.  In addition, Verifi accounted for the the smaller volume in the mixing drum after the initial discharge.  This was important in both accurately measuring slump and in recording the amount of water added in gallons per cubic yard.

Concrete Load of the Week

© Verifi LLC

[LP = leave plant, AS = arrive site, BP = begin pour, LS = leave site, RP = return plant]

Nominate a future Load of the Week by emailing the ticket number and ready mix concrete supplier name to feedback@verificoncrete.com.

Load of The Week | Contractor Adding Water to Concrete

by Verifi

Last week, we showed you a load where the contractor requested a slump change at the jobsite. The driver used Verifi to request a new slump target and Verifi automatically added water to adjust the slump.

Unfortunately, drivers don’t always record the slump change. Contractors sometimes add water on their own without asking the driver. However, Verifi can still detect such slump changes, as seen in today’s Load of the Week.

The load was batched below target slump. Verifi automatically added water to bring the slump to target, then continued to add water to maintain slump in transit. At the jobsite, the driver discharged four small amounts of concrete. After each discharge, the slump was increased. Presumably the driver or contractor added water through the wash hose on the truck. Finally, on the fifth discharge, the slump was to the contractor’s satisfaction (at 9 inches vs. the 5 inches ordered!).

In this case, the concrete producer delivered the load at the target slump and below the maximum water content. The contractor increased slump and held the truck on site for an extra 7 minutes to adjust slump. Verifi provided a clear record of all changes to the concrete at the jobsite, which helps protect the concrete producer against any liability.

 contractor adding water to concrete

© Verifi LLC

[LP = leave plant, AS = arrive site, BP = begin pour, LS = leave site, RP = return plant]

Nominate a future Load of the Week by emailing the ticket number and ready mix concrete supplier name to feedback@verificoncrete.com.