-What is the difference between dry concrete and water-saturated concrete when installing chemical anchors, particularly RE 500 V3?
-How does moisture affect the bond strength? (or any factors affected)
-Can you provide a technical reference or document supporting this claim?
Hi Yves thanks for the questions.
Water saturated concrete is defined as concrete whose internal holes or pores are completely filled with water, but no visible water inside the hole. Dry concrete is defined as not saturated, low moisture content and can absorb water.
Installation conditions like dry, water saturated and water filled hole has can affect the characteristic bond strength and the installation method. It may also affect the working and curing time of the chemical mortar due to the reduction of concrete temperature.
For example, if you refer to the attached ESR 3814 in table 19, there's a difference in characteristic bond strength in different installation conditions. In the instruction for use (IFU) part of the document at the end (page 43), water filled hole may require you to use pressure washer multiple times. And also in page 41, you will see the difference in the working time and curing time depending on the temperature.
