Dry mix mortars are one of the most widely used materials in building industry. It has many different applications in both new constructions and renovation projects. It is composed of cement, sand, limestone powder and functional additives. The additives are applied in a small amount, yet they play a significant role in improving the final mortar performances.
Contact us to discuss your requirements of dry mix mortar additive. Our experienced sales team can help you identify the options that best suit your needs.
🕑 Reading time: 1 minute
Mortar admixtures typically offer properties such as waterproofing, water-repellency, efflorescence control, air entrainment using plasticizers to enhance workability, accelerating and retarding setting times etc. These mortar admixtures are used for ratios 1:3 or leaner mixes for use in masonry construction.
Admixtures for masonry mortars are different from those used in concrete mortars which are generally ineffective in case of mortars. For instance, air entrainment mortar admixture is used as a plasticizer as it lubricates the interlock between sand particles and reduces the amount of water required for mixing. It also reduces the density of mortar which in turn improves the troweling characteristics and provides freeze-thaw resistance after the mix has hardened.
The effect of admixtures in a mortar depends largely on the mortar mix, mixer, and the time in a day when it is mixed.
Mortar AdmixturesWhile accelerating mortar admixtures accelerate the setting times, the retarders are used to enhance the setting time of mortars, which is generally used for ready-mix or ready-to-use mortars. The use of retarders allows up to 36 hours for the mortar to be used after mixing or delivery.
For more rdp polymer redispersion powderinformation, please contact us. We will provide professional answers.
When mortar with retarding admixture is placed between masonry units or blocks, some water and retarder chemical are sucked out by blocks; thereafter the hardening process begins. So, this retarding admixture for mortar should generally be used for masonry construction which has absorbent units.
Types of mortar admixtures decide their respective uses, such as:
Masonry mortars should be proportioned in accordance with ASTM C-270, Standard Specification for Mortar for Unit Masonry.
Masonry admixtures are used for different purposes and affect different properties in masonry construction. The use of these depends on the type of masonry construction, mix ratio, mixer and mixing times. The admixture manufactures specifications and recommendations should be followed during the use of masonry admixtures.
Following ASTM standards can be used for testing different properties of mortar construction using admixtures:
Are you interested in learning more about drymix mortar additives? Contact us today to secure an expert consultation!