For the strength in question; 1-6hrs depending on mix design. I agree that coring is a possibility but very expensive to have an on-site lab to test so quickly.
I am not familiar with the ASTM standards (being a european), is there one that prescribes an alerternative?
Dear All,
I am working on a project where we are using high strength concrete (cement content 450kg/cubic meter of concrete).
I have recently received reports from a similar project saying that they have been seeing strength loss at 90-day compressive strength testing. I have not heard of...
My Question: is there an alternative to Hilti's DX450-SCT test method (https://www.hilti.co.uk/fstore/holuk/techlib/docs/DX450_SCT_Leaflet_en_W3636.pdf) for early strength testing of insitu sprayed concrete (shotcrete/gunite)?
This is for testing the compressive strength in the range of 3 MPa...
