Slabs precast on site, for street channeling closure. Karnataka, India.

Architectonic Concrete, S.L. performed tecnical assessment to all the teams involved in these works, untill these first precast slabs were placed:
to the architects while in design fase, moulds-making process, precast workers and engineers on the site... all local, in northern Karnataka state for a cement manufacturing group, who was the whole task promoter.

First image shows weighting for a precise dossage of pigments and fluidifier.

Mastering self-compacting concrete allows for good precast in the very same erection site, thus eliminating factory and cost of carriage for the terminated elements.

Architect wished a terracotta color for the slabs, which we decided to integrate on the fresh mix, to obtain total color durability under the strong solar exposure in the long run.

Then color was set by mixing white cement dry with 3% w.c. iron oxides, which are fully compatible with the fluidifiers.

Though our concrete mixer was elementary, it sufficed perfectly, since most important is the dossage precision of the fresh mix, speciallly the fillers, and over all: the water ammount.

Slabs demould after 24 hours, only. That concrete is able for 4 Mpa. bending resistance, at that time.

Besides, elevation fixings are embeded in the material, and conected to its inner iron bar reinforcement.

Slabs surface is that of the moulds negative, with slotted diagonals to avoid slipery, when wet.

Right after demould slabs turn up side and place directly in their intended location, for street sidewalk while as a registrable closure of the services gallery to the whole residential urbanization.

This project was inspired by our experience with a similar project of Barcelona (Spain), some 20 years ago, though with a different aesthetics, more granite-like, but similar conception and processes.