I assume you mean pasteurizing straw substrate. A quick question: what kind of construction lime do you have?
There are four kinds of construction lime: quick lime, slaked lime, fat lime and hydraulic lime:
https://theconstructor.org/building/types-lime-use-construction/35045/
I cannot find any info about using any of these kinds of lime to pasteurize straw substrate.
Therefore, I'd probably stick with hydrated lime that's low in magnesium, as it's been proven to work. This video by Tony at Freshcap Mushrooms explains exactly how to do it:
Perhaps some else on here has experience with using construction lime. Here is more info about hydrated vs. hydraulic lime:
https://en.wikipedia.org/wiki/Hydraulic_lime
Good luck!
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