Permissible Range for Using Additives in Concrete:
The permissible range for using Capcoplast PG06R is from 0.8% to 2% by weight of cementitious materials (800 to 2000 grams per 100 kilograms of cementitious materials, including cement, silica fume, slag, fly ash, and other similar pozzolanic materials). Determining the optimal dosage of the additive should be based on the mix design specifications, construction conditions, and environmental factors. Ultimately, it should be determined through the creation of test mixes. Exceeding the declared permissible limit may have consequences, such as an immediate increase in the setting time of concrete, especially for concretes containing retarder 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.
