Caption: Pinova derives Vinsol from longleaf or slash pine tree stumps, shipping the resin in flake form for air-entraining admixture production.
A convergence of routine market and rare natural forces could compel concrete producers using Vinsol resin-based admixtures to convert their mix designs to ones bearing alternative products meeting ASTM C260, Standard Specification for Air-Entraining Admixtures for Concrete requirements.
The influence cement paste composition on acting of air-entraining admixture
, in IX Sympozjum Naukowo Techniczne: Reologia w technologii betonu [IXth Symposium on Scientific and Technical Rheology on Concrete Technology], 12 June, 2007, Gliwice, Poland.
We used an air-entraining admixture
to get 6 percent plastic air contents, and added 3 to 6 gallons of accelerating admixture at the jobsite.
However, both SCC and ordinary concrete must need air-entraining admixture (AEA) to obtain entrained air content for enhanced durability or extended service life in freezing and thawing environment.
Laboratory Investigation of Air-Void Systems Produced by Air-Entraining Admixtures in Fresh and Hardened Mortars.
The influence of an air-entraining admixture
and a superplasticizer on the formation and behaviour of air bubbles in a self-compacting concrete mix are analysed in this paper.
Among the matters for which standards have been established are terminology relating to lime and limestone, specification for air-entraining admixtures
for concrete, applying and finishing gypsum board, mortars for repairing historic masonry, a test method for the field measurement of infiltration rate using double-ring infiltometer with sealed inner ring, and conducting an inter-laboratory study to evaluate the performance of an analytical method.
When an air-entraining admixtures
is used along with a "normal" SP (without entrainment from SP as an undesirable side effect SP), investigated SCC is frost-resistant.
To prevent the damage harsh weather can do to untreated concrete, Micro Air[R] or MB-AE[TM] 90 air-entraining admixtures
create millions of tiny air bubbles in concrete that allow room for the expansion of freezing water, protecting concrete from the scaling and cracking often caused by freeze/thaw cycles.
are also used where necessary.
Selection of air-entraining admixtures
is based primarily on the recent experience of the State highway departments in Delaware, Michigan, New Jersey, and South Dakota.