Ultra High Performance Concrete




This concrete has minimum strength of MPa. It has a great durability. Commonly, the UHPC consists of cement, silica fume, fine quartz sand, high range water reducing admixtures, steel fibers, and low water to cementitious materials ranging from 0.15 to 0.25. Durability of this concrete is superior compared to ordinary concrete as its pores are discontinuous, which declines liquid penetration.

UHPC is used to improve concrete homogeneity through the removal of coarse aggregate in the mixture. It does better gradation and mixture between the main components so that voids are reduced thus density increases. Steel fibres are added to the mixture to avoid brittleness of concrete.

Main components in UHPC are Portland cement, Silica Fume, Limestone and or quartz flour, Fine sand, High-range water reducers, Water and Steel fibres.

Compressive strength of UHPC is ten times higher than ordinary concrete. Tensile strength of about 10 MPa. UHPC has properties similar to hard rock.UHPC has excellent abrasion resistance, nearly twice as resistant as ordinary concrete. 

In UHPC no internal vibration is required. Initial set is in 24 hours and then additional 48 hours required for the curing process.

Applications of UHPC

Ø  Highways, bridges, piles/foundation.
Ø  Used in seismic retrofit.
Ø  Thin-bonded overlays on deteriorated bridge decks.
Ø  Used in pedestrian bridges.
Ø  Used in Spent nuclear fuel storage.      
Ø  It is also used for facades, aggressive environment and canopies.

Advantages of UHPC

Ø  Construction speed has been increased.
Ø  Construction techniques should be simplified.
Ø  It improves durability and reduces maintenance.
Ø  Life span has been increased.

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Blog written by

Shruti Doshi
Technical Officer – Sanghi Cement & Blogger
shruti.doshi@sanghicement.com
shrutidoshi.1492@gmail.com

Blog Managed by

Nirav Pandya
Digital Marketing Officer – Sanghi Cement
nirav.pandya@sanghicement.com




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