mass concrete

[pandidelco]

can anybody explain how to determine the maximum allowable mass concrete core & differential temperatures by using any international standards? please help me regarding this.

 

[KootK]

Link
Link

You may also find ACI 211.1 useful: Standard Practice for Selecting Proportions for Normal, Heavyweight, and Mass Concrete.

I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.

 

[pandidelco]

Dear Kootk,

I found this formula "The tensile stress developed by these conditions can be expressed by the equation S = REeT" can explain brief that how to calculate the allowable Max. Allowable differential temperature?

 

[concretemasonry]

It is a little early in the year, but it could be relatively early, but this does happen in the ready mix business, but can happen late in the year. One thing to look at it the cement used was "hot" or freshly ground. It is difficult to track since the typical cement "mill reports" show the chemical balance when produced and sampled at a main terminal and not when used.

I was in the concrete products industry and had many friends in the ready mix business and saw this in large volume paving or building construction side.

This usually occurs in the fall when storage is depleted and fresher (more reactive) cement is delivered. I was in the concrete products business that has the steady demand 12 months a year and our cement was not to ASTM specs, but was a "product" cement, so it could not be sold to other types of producers. We had 2 suppliers (one for 10 or 11 months and one for the remainder) that made an acceptable cement. The suppliers would tell us their plans for maintenance in hope it would mesh with their schedules and we would use that in our production scheduling also.

Dick

Engineer and international traveler interested in construction techniques, problems and proper design.