I attended today's webinar on moisture content with adhesive anchors, and I came away unsure about the difference between water-saturated and water-filled holes. If I read the installation instructions for the RE 500, they say that for water-filled holes, the water must be blown out of the hole as part of the cleaning process. If this is the case, then aren't you left with a hole that is simply water-saturated? And if so, why would there be a need to reduce the strength of the anchor just because there was once water in the hole before it was cleaned? At the end of the day, if the circumstances are the same when the adhesive is injected, then I don't understand why a reduction in capacity would be necessary. But perhaps I am missing something here. Would appreciate clarification. Thanks.
Hi Jimmy
Water-saturated concrete is typically concrete that is damp to the touch with no standing water in the hole. The water-filled hole installation is when the hole is drilled and cleaned without water present, but the anchor is installed with water standing in the hole. The reduction is in reference to CSA A23.3-19 D5.3 where categories are defined in accordance with ACI 355.2 and ACI 355.4. For adhesive anchors please refer to ACI 355.4-19 chapter 7 sections 7.5 to 7.12.