Tarmac Toproc Ready-Mix Concrete - Philips Computer Factory - Stockport

Toproc HS is providing the construction industry with a material that was beyond the dreams of engineers even just 5 years ago. It is opening up new possibilities for the application of concrete and providing confidence in construction for concrete elements designed to the limit of previous performance.

One such application is this refurbishment project whereby a floor was required to have a high resonant frequency of vibration so that the heavy machinery affixed to it and generating high amplitude, low frequency vibration, did not cause the floor to resonate and fail. Consequently the engineer, Oscar Faber, took the innovative step of specifying high modulus Toproc HS to provide the required properties.

Technologies

The floor slab was pumped into place and power-floated with conventional equipment following a 45 minute journey time from the Topmix plant on a hot July day.

The in-situ strength was measured by Topmix’s Special Products Department Research and Development laboratory staff utilising temperature-matched curing techniques which confirmed the strength of 72.5 MPa in 24 hours. The static modulus of elasticity was also measured at 45 GPa.

The very rapid hydration and other special formulation secrets also enabled the epoxy resin floor coating to be applied 24 hours after placing as the surface of Toproc HS dries out extremely quickly.

Product Used: Toproc HS ready-mix concrete

Beneficial Features: High Modulus, rapid surface drying, easy placement and finishing

Compressive Strength: 72.5 MPa in-situ in 24 hours, 153.5 MPa ultimate

Modulus: 40 GPa in 7 days, GPa in 28 days

This information has been sourced, reviewed and adapted from materials provided by Tarmac Ltd.

For more information on this source, please visit Tarmac Ltd.

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