Vinex Resin Series is derived from natural resins from pine trees. The refining of
our aged pine tree resins through our distillation processes produce a residue that
provides an excellent start material in the production of both bitumen emulsifiers
and air-entrainment agents. The resins are further saponified with alkalis such as
sodium hydroxide to produce Vinex soaps. Our high heat dry saponification process
produce free-flowing dry soaps without damaging delicate chemical structures.
Benefits for Vinex Resin
Higher resistance to crack caused by freeze-thawing cycles
Increased plasticity in admixtures
Good chemical resistance to sulphates
Air entraining agent in cements, mortars, and concrete to improve strength, workability,
and freeze-thaw resistance
Most hardened concrete structure appear solid however they are highly porous. They
have small capillaries as a result of water evaporation that is beyond what was required
for the hydration reaction during their initial mixing. Generally water to cement
ratio is approximately 0.42 I.e. 42 parts of water for every 100 parts cement, this
allows for a complete hydration of cement particles without any excess. However,
most concrete used has a ratio of 0.45 up to 0.60, meaning there is excess water
that is used to allow workability.
Eventually, the excess water in the voids evaporates leaving little pores in its
Environmental water from rain, cleaning, etc fills the voids. During freeze-thaw
cycles, this water occupying these voids expands and create stresses which lead to
cracking. When the crack starts to develop, it allows more water into the concrete
and the cracks get larger. Eventually the cracks starts to break off as chunks.
Generally the failure of reinforced concrete structures often occurs during the freeze-thaw
cycles. As the moisture starts to reach the reinforced steel, the steel expands when
it starts to rust, this further promotes more cracks and letting more water in. Eventually,
the structure becomes too weak to hold due to loss of integrity.
SOLUTION USING AIR-ENTRAINMENT AGENTS
Most of air-entrainment agents provide water reducing properties. Air entrainment
agents as a soap are intentional added to create tiny air bubbles in concrete. As
a hardness resistant surfactant, a concrete maker introduces the bubbles when added
to the mix. The air bubbles are created during mixing of the plastic (easy flowing,
not hardened) concrete, and most of them survive to be part of the hardened concrete.
The primary purpose of air entrainment is to increase the durability of the hardened
concrete, especially in climates subject to freeze-thaw; the secondary purpose is
to increase workability of the concrete while in a plastic state I.e. Reducing a
water to cement ratio closer to its theoretical ratio, limiting the use of excess
water during construction.