The size of the Mock Up the foundry process 800X800X350 mm size affect the test” are you asking if the size of your concrete block has an effect on the test? If so then no as long as the block is bigger than 400 x 400 x 300 no problem. You need to ask the client what strength the concrete is they will be using for the segments and make sure your concrete is the same strength. You also need to add some form of reinforcement, either re-bars or steel fibres to strengthen the concrete and prevent it from bursting out when you apply the load. I have attached again the test report we had carried out on these sockets in the UK.
I did offer to come and see your client some weeks ago. I will be happy to come but my availability is tight until the end of the year. I fly to Latin America on Monday and don’t get back to the week After next I could possibly come out the week after that Week 49 if this is not too late?