air-entraining admixture

air-entraining admixture

An admixture that causes the development of air bubbles in concrete or mortar during its mixture.
References in periodicals archive ?
However, air-entraining admixture is adsorbed by the unburned activated carbon in fly ash which reduces air-entraining capability of fly ash concrete [18,19].
Caption: Pinova derives Vinsol from longleaf or slash pine tree stumps, shipping the resin in flake form for air-entraining admixture production.
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.
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.
"Air-entraining admixtures should not be specified or used in concrete to be given a smooth, dense, hard-troweled finish due to the probability of blistering or delamination," he explains.
In addition, water-reducing and air-entraining admixtures were added to the mixture with a water-cement ratio of 0.4 and an air content of 5.9%.
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.
Phase 1 indicated that unstable air void systems are associated with the use of certain air-entraining admixtures, incompatibility of materials, construction practices, and field conditions (e.g., temperature and consolidation).