RFI No. 21 – Colour Dye

Section 3 – CONCRETE Subsection : 3.2.3.3 Coloring admixtures Question The team is considering adding food colouring dye instead of pigments as a mean of colouring the concrete. Is this an acceptable approach? Answer If your cloring dye does not meet  the requirement...

RFI No. 19 – Use of Wax

Section 5 – Finishing Subsection : 5.3 Graphic Question Are we allowed to use wax to shape the theme related shape we want to embody at the bottom of our canoe? We are planning to pour it on the last layer of our concrete for aesthetics purposes. Or do all theme...

RFI No. 11 Aggregate proportioning

Section 3 – CONCRETE Subsection : 3.3.3 Aggregate proportioning Question On the data sheet for our ASTM C330 aggregate, it states percent passing the No. 200 sieve. To confirm, can teams use the percentage stated on the MTDS for the mix table calculations and sample...

RFI No. 10 – Filler content in aggregates

Section 3 – CONCRETE Subsection : 3.3.3. Aggregate Proportionning Question J’ai contacté la compagnie qui fourni le poraver afin de savoir la quantité de passant 75 microns pour le 0.25-1 mm et le 1-2 mm. La réponse a été qu’ils ne peuvent seulement...