Concrete Admixtures (chemical additives) - Concrete and Mortar Improvers offer various improvements through physical-chemical ways: In fresh mixtures by facilitating the user and In hardened mixtures by improving quality and life span of construction
Usually added in fresh cement mix mass, providing this way a wider range of applications. Simply by adding small quantities of such materials, impressive improvements can be accomplished
Water Reducer-Concrete plasticiser-Mass waterproofing
VIMAROL is a liquid additive acting as mass waterproofing due to its plasticising action.
as a water reducer, it reduces porosity and improves binding power.
as a plasticiser of the ready mixed concrete, it improves workability, acts against separation of its aggregates and therefore optimizes condensation.
In both cases, VIMAROL improves cement hydration and development of cement grout in the concrete mass, resulting in increased strengths and reduction of water permeability. Also it reduces significantly the creation of cracking due to shrinkage setting.
VIMAROL is a significant aid in preparing pumped concrete specifically in cases of dense reinforcement or fair-faced concrete.
VIMAROL is added as a water reducer during concrete preparation, so by reducing water/cement ratio, it significantly increases its initial and final strengths
VIMAROL is added as plasticiser in ready-mixed concrete, so it significantly improves workability and final strength of concrete.
In both the above cases, VIMAROL acts as a mass waterproofing. However, mainly for practical reasons, it is added into the ready-mixed concrete on site as a plasticiser – mass waterproofing.
VIMAROL’s plasticising action decreases after 30 minutes. Mixing in the truck mixer drum should last 4-5 minutes in high rotations (8-12 rounds per minute) so as to achieve a uniform distribution of VIMAROL in the mass
Water reducer of high effectiveness-Concrete superplasticiser
VIMATOL-SPL is a liquid additive that acts as high level water reducer or concrete superplasticiser. The first action is referred to the worksite and the second to ready mixed concrete. The usage of the material brings significant improvements as much to the fresh as to the hardened concrete.
Acts in a positive manner in the cement hydration and therefore in its effectiveness as concrete’s bonding material.
Increases spectacularly fresh concrete’s plasticity and homogeneity, preventing from its components separation.
Pumping and workability are being significantly improved and that affects positively condensation.
Addition of VIMATOL-SPL allows significant reduction of mixing water for stable workability.
The above improvements of fresh concrete properties brought about by VIMATOL-SPL also have a positive effect on hardened concrete:
Reduction of cracking due to shrinkage setting
Reduction of porosity and therefore of water absorbency
Increase of mechanical strengths and specifically of initial strength after 1 day
Concrete mass waterproofing-Water resisting admixture
VIMAPROOF-C is a liquid additive that waterproofs the mass of concrete’s cement pulp. It reacts chemical with lime compounds that result from the hydration of cement and creates salts that on one side block the capillary pores and on the other develop water repellent forces between cement mortar and water (hydrophobia). An important property of VIMAPROOF - C is that, contrary to other additives of his category, do not bring reduction of final strengths of concrete.
VIMAPROOF - C is used for the improvement of concrete from a water absorbability point of view but also water permeability in cases of foundations, basement walls, water tanks, swimming-pools, shafts, biological cleanings, tunnels etc. It can be added either during concrete preparation or before the setting in the ready concrete.
· The waterproofing of mass of concrete eliminates the danger of damage from frost and prevents the shaping of stains from creation of salts.
· In highway engineering projects as bridges, ramps etc. increases considerably the resistance of concrete in the attack of salts that are used as anti freezers.
· The creation of chemical compounds that block the pores do not in any case prevent the breathing of the construction elements