SBTJM-I HIGH EARLY-STRENGTH ADMIXTUR
SBTJM-I High Early-Strength admixture has the characteristics of high water reduction, high early strength and high strengthening effect, etc.. Because of its good cement adaptability, easiness for use, and excellent strengthening effect. SBTJM-I can be widely applied to the concrete structures that require high early strength and high strengthening effect.
MAIN TECHNICAL PROPERTIES
¡ñ High early strength.
It can greatly increases the early strength of the concrete by 110~230% at the age of 1 day, 60~130% at the age of 3days and 50~90% at the age of 7days, which effectively accelerate form turnover, shorten construction cycle and improve labor productivity.
¡ñ High water reduction
SBTJM-I is an ideal admixture for preparing high-slump concrete and high strength concrete because its water reduction can be up to 18~22%.
¡ñ Highly strengthening effect.
SBTJM-I not only effectively increases the early strength of the concrete, but also makes the later strength develop continuously. The compressive strength of the concrete with SBTJM-I increases by 30~50% at the age of 28days and 20~40% at the age of 90days.
¡ñ Obvious frost resistance.
The lowest construction temperature of the concrete with SBTJM-I can be down to -5¡æ.
¡ñ Excellent durability
The addition of SBTJM-I can effectively modify the pore structure of concrete, increase the compactness and the ability against freeze, carbonation and corrosion, etc., of the concrete. Moreover, its alkali content is much lower than the limited range of alkaline-aggregate reaction. It has no corrosion substance to reinforcement.
¡ñ Health and Safety
It isn¡¯t poisonous and radioactive.
¡ñ Strong adaptability
This product is compatible with different types of cement, and particularly with mineral additives in concrete such as fly ash.
¡ñ Easy for use.
It can be added into the mixer directly or added with cement, sand and stone, so it is quite easy to be used.
SCOPE OF APPLICATION
It can be widely applied to the concrete constructions such as poured-in-place or pre-cast concrete structure. It is particularly suitable for the projects requiring high early strength and high later strength, especially for cold concreting.
The normal dosage range is 0.7~1.2 %( by cement weight); while for high strength concrete the recommended addition rate can be increased to 1.2~1.5%.
¡ñ Add the product directly into the mixer or with cement and aggregate. Attention! Never dissolve in water beforehand.
¡ñ Accurately measure and properly prolong the mixing time to ensure enough dispersion.
¡ñ The time of the concrete to be covered and watered after pouring is about 6~12hs after mixing, in winding and hot weather 2~3h for plastic concrete and 1~2h for harsh concrete. The procedure of surface covering should be adopted to prevent frost damage in winter.
It should be stored in dry place. Its quality guarantee is within two years.
SBTJM-I is packaged in anti-wetting double-layer plastic bags with the weight of 40kg per bag, and is easy to be delivered and transported.
To assist you in obtaining predicated performances and ensure high quality projects, we offer technical consulting service, site mix proportion design or advising mix proportion. Our technical personnel would give free-charge site assistance service as well as construction technical guidance.