Concrete Hyperplasticizers – Capcocrete SPCR100

CapcoCrete SPCR100 is a hyperplasticizer, a very strong water reducer, and a retarder used to increase the flowability of concrete/mortar without changing the water-to-cement ratio or decreasing flowability. Additionally, this additive prolongs the setting time and working opportunity with concrete.

This product is manufactured according to the general requirements of the national standard of Iran, number 2930-1, and the performance requirements outlined in Tables 1-11 and 2-11 of the national standard of Iran, number 2930-2. Moreover, this additive complies with the requirements of Grade G in ASTM C494 standard and Table 1 of EN 934-1 standard, as well as Tables 1-11 and 2-11 of EN 934-2 standard.

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The advantages of using a concrete hyperplasticizers include:

• Reducing the water-to-cement ratio in concrete results in uniform consistency and increased compressive strength at 7 and 28 days.
• Reduced water-to-cement ratio leads to decreased water absorption and permeability due to the reduction in water content relative to cementitious materials.
• Improved Cement Distribution, Enhanced Compaction Ability in Various Conditions, and Increased Compressive Strength at Equal Water-to-Cement Ratios.
• Improving the pumpability of concrete.

The use of concrete hyperplasticizers:

• Production and implementation of reinforced and non-reinforced concrete in hot weather conditions.
• Producing highly fluid concrete with the ability to maintain suitable slump.
• All types of concrete pouring in hot weather.
• Production of self-compacting concrete.
• Production of concrete with a water-to-cement ratio between 0.40 to 0.45 and initial slump less than 5 centimeters.

Range and Method of Using Additives in Concrete:

Permissible Range for Using Additives in Concrete:

The permissible range for the use of SPCR100 superplasticizer is from 0.3 to 1.5% by weight of cementitious materials (300 to 1500 grams per hundred kilograms of cementitious materials, including cement, silica fume, slag, fly ash, and other similar pozzolans). The optimum dosage of the additive should be determined based on the mix design specifications and the prevailing operational and environmental conditions. Exceeding the specified limit may result in consequences such as segregation, water bleeding, and abrupt setting time increase, especially for concrete containing retarding admixtures.

How to Mix Concrete hyperplasticizers:

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 a low initial slump. 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, it is necessary for the concrete mix design to be prepared in such a way that the concrete does not experience segregation and water bleeding.

Physical and Chemical Specifications of Concrete hyperplasticizer (CapcoCrete SPCR100):

Physical State: Liquid
Color: Colorless to light brown
Chemical Base: Polycarboxylate ether
Density: 1.08 ± 0.02 g/cm³
Chloride Content: Negligible
Equivalent Alkali Content (Na₂O): 0.9 %
pH 6 ± 1
Freezing Point: -2°C

Safety Precautions When Using Concrete Hyperplasticizers:

• In case of contact with this additive in the eyes, the person should rinse the eyes with water for at least 15 minutes, keeping the eyelids open.
• In case of contact with this additive on the skin, promptly wash the contaminated skin with clean water for 15 minutes.
• Contaminated clothing should be washed with appropriate cleaning agents before reuse.
• If the affected person continues to experience discomfort, it is necessary to seek medical attention promptly.

Concrete Hyperplasticizers – Capcocrete SPCR100

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