Solar reflectance index (SRI) of LC3-based Concrete

Is there research (active or published) showing the solar reflectance index (SRI) of LC3-based concrete? IgCC requires paving to have an SRI of 29 or less, without addatives.
I am looking into this to understand the limitations, or areas where barriers need to be removed, to accelerate the adoption of LC3 cement.
Thanks!