No. First, let me write and punctuate the sentence the way I would do it to avoid most of the problems.
Since we last spoke, I tried to determine the acceptable standards for installing concrete. An article entitled “Preventing Concrete Cracks” from ConcreteNetwork.com began with the following general disclaimer: Perhaps this section should be titled “Attempting to Prevent Concrete Cracks or Minimizing Concrete Cracks,” as it is impossible to guarantee against cracking.
In regard to your specific question, web sites are generally underlined rather than put in quotations. Using the colon to introduce the sentence you seemed to have quoted directly avoids quotes within quotes.
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