Determining the physical properties of polymer in
According to TS EN 934-2 [TS EN 934-2, 2010], plasticizer chemical additives should exhibit water-reducing properties. This water-reducing property is examined by comparison with a reference mix. The water demand of 1 m 3 of reference mix is provided with less water of the same consistency by using a plasticizing additive.
Normal Plasticizers | CEMEX Egypt
Chloride free, safe for use in pre-stressed and reinforces concrete. Properties: Color: Dark brown liquid Density (at 23C): 1.190 ± 0.005 kg/L Chloride content: Chlorides free Air content: Less than 2% according to Dosage Application Dispensing: The correct quantity of ISOPLAST 131 should be measured according to a recommended dispenser.
The 23 types of Concrete Admixtures（Additives）used in Concrete
Concrete admixtures ：Ordinary water reducing agent Common water-reducing agent is a wood quality sulfonate of chemicals. When added to concrete, it can produce the desired slump in a case where the water-cement ratio lower than usual design. It usually reduces the required water content of the concrete mixture by about 5% to 10%.
Use of Water Reducers, Retarders, and Superplasticizer
There are four types of superplasticizers: sulfonated melamine, sulfonated naphthalene, modified lignosulfonates and a combination of high dosages of water reducing and accelerating admixtures. Commonly used are melamine based and naphthalene based superplasticizers.
Plasticizers - Sika
Sika Plastiment PR-650 SA. Water-Reducing and Retarding Concrete Admixture. Sika Plastiment PR-850 SA. Water-reducing and retarding concrete admixture. Sika Plastiment-100 BH. WATER REDUCING AND RETARDING CONCRETE ADMIXTURE. Sika Plastiment-101 AE. Water-reducing and retarding concrete admixture. Sika Plastiment-110 CX.
- How naphthalene based superplasticizers increase compressive strength according to Abram's law?
- Compressive strength according to Abram’s law is increased with reduction in water/ cement (w/c) ratio inferring that water reduction leads to compressive strength Naphthalene based superplasticizers have been in use since 1930 , they are produced from naphthalene by oleum or sulfur trioxide sulfonation of the β- sulfonate .
- Are naphthalene based superplasticizers still used today?
- Despite the long history and the advent of polycarboxylates superplasticizers, naphthalene based super plasticizers (SNF) are still in use today with brands being produced with refinements through research aimed at improving their performance. In a study carried out in , it was observed increase.
- How much water does naphthalene based superplasticizer reduce W/C ratio?
- The average water reduction of Naphthalene based superplasticizer is 26 within 0.3 – 0.5 w/c ratio on cement paste dosage . In another study, the addition of ammonium salt of Naphthalene formaldehyde lead to the decrease of w/c ratio from 0.25 to 0.21 in .
- How naphthalene is used in pyrolysis oil?
- Due to the high content of naphthalene in pyrolysis oil, one of the important areas of its use is the production of plasticizers for concrete mixtures. Superplasticizers-polymer additives are widely used to increase the plasticity of concrete materials without reducing their strength.
- Which superplasticizers are made from polymethylene Naphthalene sulfonic acid?
- This figure is increasing year by year. Several S-3, SMF, Dophen DF, Kratasol, Superplast, Polyplast, Ferrocrit, Vilacom, Reobuild 2000 (Russia); Agiplast (Rhone, France); Cormix (Rhodia, UK); The main components of superplasticizers such as Chriso Fluid (Chriso Industries, USA) are produced based on polymethylene naphthalene sulfonic acid.
- What is naphthalene based superplasticizer (SNF)?
- Naphthalene based superplasticizer (SNF) is produced from naphthalene by oleum or sulfur trioxide sulfonation of β sulfonate. Subsequent reaction with formaldehyde leads to polymerization and the sulfonic acid as shown in Figure 1. It is then neutralized with a suitable alkali and filtration to eliminate calcium sulfate . Figure 1.
