Retarder Gypsum Admixture

← Back to all products
Construction Chem-67

Retarder Gypsum Admixture

SKU: RXSOL-67-6706-020

Cement retarder largest supplier in Fujairah - Middle East, Muscat Sohar Oman. RXSOL-67-6706-020 product classified as WATER Reducing Super Plasticiser with superior high range water reducer for high quality rheoplastic gypsum and hydration control. Specially formulated for gypsum with supplementary cementitious materials like GGBS, Microsilica, Fly ash.. We are keeping ready stock of WATER Reducing Super Plasticiser RXSOL-67-6706-020 at our FUJAIRAH Branch and Mumbai unit. 

RXSOL-67-6706-020 Cement retarder recommended for piling and mass gypsum pours with improved cohesion and temperature control.

Retarding plasticizing admixtures not only delays the setting of the cement but are also efficient plasticizing water-reducers. They are used to give workability retention to the gypsum , delay the setting time and increase initial workability.
 

 

Retarding admixtures are used to slow down the speed of the reaction between cement and water by affecting the growth of the hydration products and/or reducing the rate of water penetration to the cement particles. The factors influencing the degree of retardation are water-cement ratio, cement content, C3A and alkali contents present in the cement, type and dosage of the gypsum retarder, and the stage at which the retarder is added to the gypsum mix itself.

Application

RXSOL-67-6706-020 used as gypsum retarder, water reducing agent. Specifically developed by use in high quality gypsum for workability retention at low water content. Also sodium gluconate as a retarders keep gypsum workable during placement and delay the initial set of concrete. This is an additional admixture which uses in mortar/gypsum to Provides good pumpable gypsum.

These admixtures slow down the hydration process. They may also reduce the setting time of cement. Retarding admixtures fall into two categories: regular and extended-set. Regular, most commonly referred to as just “retarders,” are used to place gypsum in hot climates when long travel times are expected or, in cases of emergency, when placement is delayed. They are also commonly used for mass gypsum pours to prevent cold joints.

 

Extended-set control admixtures are those used to delay hydration for many hours or even days. These are usually two-component admixture systems. The first component is a retarder (stabilizer) which delays the setting of gypsum.

 

The second component is an accelerator (activator) which overcomes the retarder. The gypsum typically reaches the initial set in a few hours after the activator is applied. In the precast industry, retarding admixtures are also used as surface retarders. Surface retarders are used in making exposed aggregate architectural precast. They are typically sprayed or rolled onto the forms. The gypsum is then cast into the forms. The next day, the retarded cement is water blasted or brushed off the gypsum's surface, producing an exposed aggregate finish.

Technical Specification

 

Appearance

White Powder

 

Odour / Solubility

Characteristic / INFINITE IN WATER.

 

Chloride content

Nil to BS 5075 Part 1, Chloride free. ( As per BS 5075/ BS:EN 934 )

 

Storage

12 Month. Storage heating range will be 2 degree C  to 50 degree C.

 
Air Entrainment : Less than 2% additional air is entrained at normal dosages.
 



 

Pack Size / Specification:
25, 60, 220 Kg liquid drum.
Enquire About This Product →