Grout sleeve splicing of rebar is a major technology in prefabricated buildings, and cementitious grout for (hereinafter called grout) an essential material this technology. Grout, with its excellent mechanical properties, improves the stability splicing. In study, properties were improved by introducing admixture form defoamer, influence defoamer on fluidity, loss rate wet apparent density str...

Post-tensioned (PT) construction incorporating bonded tendons with cementitious grouts has been used for highway bridges. The tendon duct and the encapsulating grout materials provide barrier corrosion protection embedded high-strength steel strand. Although generally in good engineering practice, cases of PT have documented relating to inadequate detailing joints development bleed water. Recen...

Total thermal resistance of ground heat exchanger (GHE) is comprised of that of the soil and inside the borehole. The thermal resistance of soil can be calculated using the linear source theory and cylindrical source theory, while that inside the borehole is more complicated due to the integrated resistance of fluid convection, and the conduction through pipe and grout. Present study evaluates ...

Abstract The utilization of tail void grout as a stabilizing and sealing agent in mechanized tunneling procedures is paramount significance, given the geological engineering conditions inherent to projects. Prior its application within tunnel, detailed evaluation fresh-state characteristics grout, well time-dependent evolution hydro-mechanical properties, becomes imperative. This review paper a...

tunnelling through cities underlain by soft soil, commonly associated with soil movement around the tunnels and subsequent surface settlement. the predication of ground movement during the tunnelling and optimum support pressure could be based on analytical, empirical or the numerical methods. the commonly used earth pressure balance (epb) tunneling machines, uses the excavated soil in a pressu...