Sika Plastiment PR-200 M | Plasticizers
Sika Plastiment PR-200 M is used as a concrete plasticizer-retarder where high quality concrete is required in difficult climatic conditions. Suitable for use in tropical and hot climatic conditions. Sika Plastiment PR-200 M gives the following properties: Long slump retention at high concrete temperature.
SikaPlast-318 | Super Plasticizers
PCE based superplasticizing and set retarding concrete admixture. SikaPlast-318 is a 3 rd generation polymer based high performance superplasticizer for producing soft consistency concrete. SikaPlast-318 meets the requirements of ASTM C 494 Type D & G. SikaPlast-318 conforms to Type G when used at 0.8–1.0% dosage, depending on cement
Effects of Super Plasticizing and Retarding Admixtures on
Concrete mixes with SP and retarder dosages of 600, 1200, 1800, and 2500 ml/100 kg of cement were prepared, together with control mix (water/cement ratio were 0.50). After casting, normal curing...
High Range Water Reducer - Sika
Sikament-610 is designed for both the production of conventional slump concrete, as well as for SCC applications. High Plasticity and Cohesion: The superplasticizing action of Sikament-610 allows the production of high-slump concrete without segregation such that concrete can be placed with minimal vibrations even at low water cement ratios
Effect of Plasticizing and Retarding Admixtures on the
As a result, it is compulsory to use plasticizers and retarders when such concretes are designed. There are several types of commercially available superplasticizers such as lignosulphonates, naphthalene-based, melamine-based, and modified polycarboxylates and different retarding admixtures [ 13 ].
- How to reduce the slump loss of concrete?
- In order to reduce the slump loss of concrete, the methods of increasing the amount of polycarboxylate superplasticizer and adding compounding retarding ingredients are adopted, which not only increase the cost of concrete production but also have serious side effects on the strength and durability of concrete [8-10].
- Does admixture affect slump retention of concrete?
- Compressive and tensile strength test on mortar cube and briquette samples was conducted to evaluate variation in strength with different dosage of admixture while keeping other materials’ proportions same. Finally, the dosage effect on workability (slump retention) of fresh concrete was studied for every 15-min interval up to 1.5 h.
- Can superplasticizer admixtures reduce slump loss?
- Permeability of concrete could be decreased with the increase in the superplasticizer dosage (Meikandaan 2012 ). Slump loss can be reduced by superplasticizing retarders (Alsadey 2015 ). In some case, higher dosage of admixtures was found to lead to segregation and bleeding of fresh concrete (Maroliya 2012 ).
- Can polycarboxylate superplasticizer reduce slump loss in fresh concrete?
- By optimizing the synthetic parameters such as acid-to-ether ratio, the problem of rapid slump loss of polycarboxylate superplasticizer in fresh concrete is solved, and the slump retention performance of polycarboxylate superplasticizer is improved. 2. Experiment 2.1.
- What is a slow-released polycarboxylate superplasticizer with high slump retention?
- The slowly-released polycarboxylate superplasticizer with high slump retention was synthesized by free radical polymerization. FTIR spectrum analysis of the products showed that the polymerization of the monomers proceeded smoothly.
- Can superplasticizers produce high strength concrete?
- The use of superplasticizers may produce high strength concrete (compressive strength up to 22,000 psi). Superplasticizers can also be utilized in producing flowing concrete used in a heavy reinforced structure with inaccessible areas. Requirement for producing flowing concrete is defined in ASTM C 1017.
