MAPEI MAPEPLAST SUPER Liquid (20 kg)

Product Details

 91 000 74051 Mapei Mapeplast Super  An integral waterproofing and plasticizing chemical admixture for concrete and mortar. It is a brown liquid that disperses cement particles, reducing the water content required in a mix and making the concrete denser and more impermeable.Primary Function: To act as a waterproofing agent from within the concrete (integral) and as a plasticizer to improve workability. It also has a slight retarding effect, slowing down the setting time, which is beneficial in hot weather and for large pours.Key Features & Benefits (from TDS):Integral Waterproofing: Reduces the permeability of concrete, making it water-resistant throughout its mass.Plasticizing Effect: Improves workability and ease of placement for a given water content.Water Reduction: Allows for a reduction in the water/cement ratio, leading to higher strength and durability.Set Retardation: Slows down the hydration process, reducing the risk of cold joints in large pours and mitigating thermal cracking in mass concrete.Chloride-Free: Will not corrode steel reinforcement.Compatible: Can be used with other admixtures like air-entraining agents and micro-silica.Q1: What is the recommended dosage?A: The standard dosage for integral waterproofing is 0.4% by weight of cement. This equals 0.2 kg of Mapeplast Super for every 50 kg bag of cement. Dosages can be varied between 0.2% and 0.5% depending on the required effect (workability, retardation).Q2: How and when should it be added to the concrete mix?A: For maximum effectiveness:Add it to the mixing water.Introduce it into the mixer after the other ingredients (cement, aggregates, and at least half of the mixing water) are already in.Avoid adding it directly to dry materials.Q3: Does it affect the concrete's setting time?A: Yes. It has a slight retarding action, meaning it will slow down the initial setting of the concrete. This is beneficial for large pours and in hot weather but must be planned for.Q4: Can it be used with other admixtures?A: Yes. It is compatible with:Air-entraining agents (e.g., Mapeair)Micro-silica (e.g., Mapeplast SF)Curing compounds (e.g., Mapecure)Form release agentsFly ashQ5: What is the shelf life?A: 12 months from the date of manufacture when stored in its original, closed container in a cool place, protected from rain, frost, and direct sunlight.Q6: Is it safe to handle?A: It is not classified as dangerous. However, as a professional chemical product, it is recommended to wear gloves and eye protection. Always refer to the latest Safety Data Sheet (SDS) for complete information.Q7: What is the water/cement (w/c) ratio recommendation?A: For waterproofing, aim for a w/c ratio not higher than 0.55. The exact amount of water needed will depend on the aggregates used. Start with a w/c ratio of 0.5 and adjust based on site trials.