Any concrete structure must be able to serve the purpose for which they were built throughout their service life. Chemical manufacturers in UAE noted that safety and environmental influences are major concerns in the long-term durability of all concrete structures. Thus, they offer a wide range of concrete admixtures to use in the construction of concrete which contributes a lot to the durability of any structure.
Concrete admixtures are the ingredients in concrete other than water, cement and aggregate which are added immediately before or during the mixture. Concrete admixtures are being used primarily to ensure the quality of concrete during the mixing, placing, transporting and curing process and to lessen the cost of concrete construction.
The efficiency of concrete depends on some factors, including: water content, type and amount of cement, mixing time, and temperature of the concrete and air. Concrete admixtures including Corromix admixtures range has different functions:
Water-reducing admixtures usually lessens the water content needed for a concrete mixture by an average of 5% to 10%. Therefore, concrete structures that contain a water-reducing admixture needs less water to reach a required slump than untreated concrete.
Superplasticizers, are also known as high-range water reducers (HRWR). Chemical manufacturers in UAE say that it reduces the water content by an average of 12% to 30% and can be added to the concrete mixture with a low-to-normal slump. The effect of superplasticizers lasts only for about 30 to 60 minutes, depending on the brands and dosage rate. Thus, superplasticizers are commonly added to concrete at the job site.
Accelerating admixtures increase the percentage of early strength development, lessens the time needed for proper curing and protection and speed up the start of finishing procedures.
Retarding admixtures slow down the setting rate of the concrete. They are used to respond to the accelerating effect of high weather on concrete setting. Hot weather often causes an increase rate of hardening which makes placing and finishing difficult. Retarders keep concrete workable during the placement process and delay the primary set of concrete.
Conclusion
Concrete admixture can effectively improve the performance of concrete. In many countries, especially the UAE, where they are widely used, it has become an essential part of the concrete material.
Corrotech Construction Chemicals is the leading construction chemical manufacturer in UAE. As leaders, in admixture technology, Corrotech helps in developing innovative concrete solutions for any construction requirements in the UAE. To see their full range of corromix admixtures, visit http://ift.tt/2BAJRf8/.
from WordPress http://ift.tt/2ByDY21