Permissible Range for Using Additives in Concrete:
The permissible range of using concrete plasticizer or CapcoPlast PG06N is from 0.5 to 1.5 percent by weight of cementitious materials (500 to 1500 grams per hundred kilograms of cementitious materials, including cement, silica fume, slag, fly ash, and other similar pozzolans). For information on the price of the concrete plasticizer, please visit the Copco Kala website. The determination of the optimal amount of additive should be based on the specifications of the mix design and the operational and weather conditions. Finally, conducting tests with trial mixes is essential. Exceeding the declared permissible limit may have consequences such as immediate increase in concrete setting time, especially for concrete containing retardant cements.
How to Mix Concrete Plasticizer :
To use the additive, it is necessary to dilute it with water in double the volume of the additive. Then, add it to the concrete when it has reached an initial slump of 5 to 8 centimeters. Additionally, the following points should be observed:
- After adding the additive, the concrete should be thoroughly mixed for 2 to 5 minutes to ensure complete blending, and uniform distribution of the additive in the concrete.
- This additive should not come into direct contact with dry cement or dry aggregate materials.
- The volume of water used to dilute the additive (before adding it to the concrete) should be subtracted from the total mixing water in the concrete.
- If there is a desire to significantly increase the slump of fresh concrete, the mix design must be formulated in a way that prevents segregation and excessive bleeding of the concrete.