Music Lane

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Original Message

Wet concrete

Posted by John Marks on April 21, 2017 at 06:32:25:
Hi.

You wrote:

If the concrete was so wet that it was easy to accomplish this, it seems like it would have occurred when workmen were present. Yet nobody ever mentioned it?

# # #

Concrete does not harden by drying out; concrete hardens by a chemical process called "hydration" in which the artificial (Portland) cement (as distinct from naturally-occuring cementitious minerals) absorbs water as it forms (or re-forms) calcium-based crystalline structures. There is a setting period and a curing period.

Both periods depend upon various factors, principally, the formulation of the concrete, ground temperature, and air temperature. Seeing as we are talking about a building foundation, I would expect the setting period to run from 8 to 24 hours; the curing period, in which the concrete reaches it structural strength, would probably in this case be at least a week if not more.

So, I have no prob with the idea of Heifetz and a donor lady going to a jobsite with a trowel a few hours after the workmen had left and using a trowel to dig a little trench at the top of a foundation pour and putting a violin bow in the trench and leveling it out.

However, I do have a problem with the notion of Jascha Heifetz, whom I understand was a persnickety individual and more than a little bit of a clothes horse, mucking around about a foundation pour that had not yet been backfilled; and if there was a violin bow put into a foundation, I cannot conceive of its being a concert-quality bow, which at the time would have been from $5,000 to $30,000. Just something he had lying around the studio.

So, the concrete part I can believe, but the whole story sounds silly to me, and out of character to the extent I can understand the character of someone I know only second-hand (I have three friends who studed with JH).

JM