Cemex Research Group Ag

Cemex Innovation Holding Ltd.

Alexandre Guerini

Davide Zampini

Giovanni Volpatti

Mark Lefsrud

Carsten Zanders

Jessica Chiaverini

Julien Chapelat

Jeremy Esser

Carlos Escott Perez

Wolfgang Salmen

Yasmeen Hitti

Mark Gregory Lefsrud

The present invention concerns a Portland cement-free porous rigid mineral substrate made of alkali-activated pozzolans, a method for preparing the same, and use of said substrate to optimize plant germination and growth.

Cement-free porous substrate for plant germination and growth made of alkali-activated pozzolans

Some embodiments are directed to a new castable cement based material containing a special admixture based internal curing system to reduce the shrinkage and avoid the formation of cracks, and method of producing the same.

Castable material based on cementitious binder with shrinkage resistance

Method to artificially agglomerate finely divided materials. A method to agglomerate finely divided material into aggregates, the aggregates being larger than the finely divided material, comprising the steps of (a) mixing finely divided material, binder and water in a mixer, (b) adding an agglomerating agent to the mix formed in step (a) and mixing constantly. Finely divided material is selected from the group consisting of cement, sand, clay, glass, slag, fly ash, stone powder, bypass dust, limestone, silica fume, crushed brick, brick powder and crushed stone or a combination thereof.

Method to artificially agglomerate finely divided materials

A concrete mix having sand, fine aggregates, binder, fibers, and various admixtures is provided. The mix has a consistency from S2 to SF3, a compressive strength in the range of 30-80 MPa and a ductility represented by fc, ffl, fR1 and fR3 values, wherein the concrete mix contains at least 390 Kg of binder, the concrete mix has a paste volume of 300-600 liters, the concrete mix contains at least two systems of fibers and a general admixture system that is composed of at least 2 sub-admixture systems.

Advanced fiber reinforced concrete mix designs and admixtures systems

A method for placement of roller compacted concrete (RCC) on a sub-base to produce a concrete pavement, which has: (a) dosing a concrete or concrete ingredients and loading the concrete or concrete ingredients into a concrete transportation truck, (b) adding at least one pelletizing agent to the concrete and waiting from 3 to 15 minutes under constant mixing to produce a pelletized concrete and (c) discharging the pelletized concrete obtained in step (b) on the sub-base from the concrete transportation truck, rotating the drum of the concrete transportation truck.

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Cressier, Switzerland

Alexandre Guerini