Analysis: Cement Additives and Application Range

A cement admixture is a compound that is added during cement mixing to improve and adjust the function of cement concrete. He can be organic, inorganic, or compound. Its appearance is usually a brown-yellow powder, and if it is liquid it is a tan viscous liquid. Cement admixtures are often used in the construction of roads, bridges, tunnels, and civil construction projects. It can improve some properties of cement so that it can be better applied to construction projects. So what is the role of cement admixture ? What about the market price of cement admixture? Today, I'll give you some brief information on the role and price of cement admixture . I hope to help everyone.

Cement Additive Introduction

A cement admixture is an additive for cement. Adding a cement admixture when cement is used produces a special effect. Such as accelerated drying and reduce the water content. Cement admixture is strictly a chemical agent. Cement admixtures are generally liquid, but there are also some cement admixtures that are powdered, but their effect is basically the same.

Cement admixtures

1, early strength agent:

A. Soluble inorganic salts: chlorides, carbonates, nitrates, thiosulfates, silicates, aluminates, alkali hydroxides, etc. B, soluble organics: triethanolamine, calcium formate, calcium acetate, C Calcium and calcium butyrate, urea, oxalic acid, condensates of amines and formaldehyde.

2. Accelerating agent: iron salt, fluoride, aluminum chloride, sodium aluminate, potassium carbonate.

3. Air-entraining agents: wood resin salts, synthetic detergents, lignosulfonates, protein salts, fatty acids, and resin acids and their salts.

4. Water-reducing agents and coagulants: lignosulfonates and their modifications or derivatives, hydroxycarboxylic acids and their salts or their modifications and derivatives, inorganic salts (zinc salts, borates, phosphates, Chlorides, Ammonium Salts and Derivatives, Carbohydrates and Poly- or Fatty Acids, Water-Soluble Polymers (Cellulose Ether, Melamine Derivatives, Naphthalene Derivatives, Polysiloxanes, and Sulfonated Hydrocarbons

5. Superplasticizer: naphthalene sulfonate formaldehyde condensate, polycyclic aromatic hydrocarbon sulfonate formaldehyde condensate, melamine sulphonate formaldehyde polycondensate, p-aminobenzene sulphonic acid formaldehyde polycondensate, sulphonated ketoaldehyde polycondensate, Polyacrylates and their graft copolymers.

6. Air-entraining agent: Hydrogen peroxide, aluminum metal powder, and some activated carbon adsorbing air.

7, grouting additives: retarder, gel, gel starch and methyl cellulose, bentonite, thickener, early strength agent, air entrainment agent.

8, expansion agent: fine iron powder or iron powder and oxidation promoter, lime, sulphoaluminate system.

9, Binder: Synthetic latex, natural rubber latex.

10. Pumping agent: viscosity of synthetic or natural water-soluble polymer additives, organic flocculants, high specific surface inorganic materials (bentonite, silica, asbestos powder, asbestos staple fiber, etc.), cement admixture (pulverized coal) Ash, hard lime, powder, etc.).

11. Flocculant: Polymer electrolyte.

12. Colorants: gray to black (iron oxide black, mineral black, carbon black, ultramarine blue, indigo blue), light red to dark red (iron oxide red), brown (iron oxide brown, rich manganese umber, brown Earth), green (chromium oxide, quinone), white (titanium dioxide), etc.

13. Sterilizers and insecticides: polyhalides, dieldrin emulsions and copper compounds.

14, moisture agent: soap, butyl stearate, certain petroleum products

15, impermeable agent: water reducing agent, calcium chloride.

16, alkali aggregate reaction inhibitor: lithium salt, barium salt, some air-entraining agents, Water Reducer, retarder, volcanic ash.

17. Rust inhibitor: sodium nitrite, sodium benzoate, calcium lignin sulfonate, phosphate, sodium fluorosilicate, sodium fluoroaluminate.

Cement admixture ingredients

Cement admixtures have the following main components:

1. Cement quick-setting agent 2. Cement early strength agent 3. Antifreeze agent 4. Cement water reducing agent 5. Cement waterproof agent 6. Cement curing agent 7. Cement swelling agent 8. Cement Grinding Aids.

Cement admixture

There are three main functions of cement admixtures. First, the effect of cement admixture is to accelerate the drying speed of the cement. Cement admixture is a kind of additive that can absorb water, which can greatly accelerate the drying speed of cement. Its other role is to increase the strength of cement. The cement admixture can completely dry the water in the cement, which greatly increases the hardness of the cement. One of the cement admixtures is to increase the weight of the cement and increase the price of the cement.

Cement admixture price

The market price of cement admixtures is actually relatively low, which is one of the reasons why people generally use cement admixtures. The market price for one kilogram of cement admixture is about ten yuan, but one kilogram of cement admixture can blend one ton of cement. So its cost is very low.

Note: This price is for reference only! Due to geographical differences, of course, the price will be different. For more details on the prices, please refer to the local distributors!

Editor's summary: Common cement admixtures consist of urea, calcium chloride, glycerine, triisopropanolamine, and Bikai polymer polyols. In the construction process, cement is essential, and the masonry masters will add certain additives to the cement to make its performance better and the cost can be reduced. A rough calculation, generally adding cement for cement, one ton of cement can reduce the cost of about five yuan. If it is a big project, the cost saved is very objective.

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