Aaron,

On Mon, 14 Aug 2006 17:02:19 -0400, Aaron wrote:

> Eight years ago, or so, I worked for a company that made concrete 
> batching control systems.  Liquids called admixtures are often metered 
> to the batch to give the concrete various properties.  One common admix 
> was called 'air'.  My boss once said (joked?) that some lesser quality 
> plants just used dishsoap. 

Many years ago my father was doing some repairs to the house (repointing some brickwork, I think) and he added washing-up liquid to the mortar mix 
- he said it was cheaper than "plasticiser" made specially for the job, and worked just as well!

Cheers,


Howard Winter
St.Albans, England


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