CSIRO Ultra Battery, page-9

Horses for courses. No-one would use very expensive swCNT where mwCNT will do the job because the price is at least an order of magnitude higher. So no concrete additive would be affordable using swCNT. Its also possible that mwCNT out perform swCNT as a concrete additive because of either strength or chemical bonding characteristics, as well as price and ease of manufacture.

Once you get into high DC currents however, conductivity becomes critical to avoid heating and energy losses. swCNT score heavily here. Similar considerations can be a factor in microprocessors.

Anyway, my point is its all irrelevant ATM. All that matters is the sales of Edencrete and successful completion of trials.