Method of filling and sealing a microtrench and a sealed microtrench

A method of continuously filling and sealing a microtrench containing an optical fiber and/or innerduct/microduct on a roadway to return the roadway to substantially an original state with a color-matched, filled and sealed microtrench comprising:

• forming a flowable concrete-based fill in a fill device by mixing together a cement, a polymer bonding agent, a colorant, an aggregate, and water, wherein the colorant provides the flowable concrete-based fill with a color substantially matching the color of the roadway, the polymer bonding agent provides adhesion to the existing roadway to seal the microtrench against water infiltration, the flowable concrete-based fill having a final set time of 2 hour or less, and the flowable concrete-based fill is configured to flow into the microtrench from the fill device;
• and
• continuously filling the microtrench with the flowable concrete-based fill material from the fill device to cover the optical fiber and/or innerduct/microduct, fill and seal the microtrench and return the roadway substantially back to the original state with the color-matched, filled and sealed microtrench.