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What is 525-grade white cement?

White Portland cement refers to a hydraulic cementitious material made by grinding white Portland cement clinker with less iron oxide content, an appropriate amount of gypsum, and mixed materials (limestone and kiln dust), referred to as white cement. White cement is divided into four strength grades, 325, 425, 525, and 625. 525-grade white cement is a green and environmentally friendly product with high early strength and no radioactivity. The product has high whiteness, high strength, low alkalinity, good stability, and bright color.

Features of 525-grade White Cement

1. White cement is a hydraulic cementitious material made by adding gypsum to white Portland cement clinker and grinding it finely.

2. White cement has high whiteness and bright color.

3. White cement is mainly composed of calcium silicate, and an appropriate amount of gypsum is added to the clinker with low iron content.

What is 525-grade white cement used for?

525-grade white cement is mainly used for the decoration of buildings, such as floors, stairs, steps, exterior wall finishes, colored terrazzo, and terrazzo manufacturing, finishing mortar, artificial stone cutting, cement roughening process, marble and tile inlay, concrete Sculpture craft products, etc., and used to make colored cement, etc.

What are the disadvantages of white cement?

White cement is four times more expensive than ordinary Portland cement. White cement has lower strength than ordinary Portland cement and Pozzolana Portland cement. The lack of compressive tension of white cement hinders its use in concrete.

525-grade White Cement Supplier

TRUNNANO is a reliable 525-grade white cement supplier with over 12-year experience in nano-building energy conservation and nanotechnology development.

If you are looking for high-quality 525-grade white cement, please feel free to contact us and send an inquiry. (sales@cabr-concrete.com)

We accept payment via Credit Card, T/T, West Union, and Paypal. TRUNNANO will ship the goods to customers overseas through FedEx, DHL, by air, or by sea.

What is alkali-free concrete accelerator?

The main components of an alkali-free accelerator are aluminum sulfate and organic amine. The alkali-free concrete quick-setting agent has no alkali, chlorine, irritating smell, good adhesion, low rebound, high later strength preservation rate, and high impermeability level. Adding a non-alkali quick-setting agent to shotcrete can bring a better working environment, and the market value is considerable.

Features of Alkali-free Concrete Accelerator

1. Low dosage of alkali-free concrete quick-setting agent (3%_7% of cement mass), fast setting and hardening of concrete, and short interval between initial and final setting.

2. The alkali-free concrete quick-setting agent has good adaptability to cement. In the range of 3%-7% of cement mass, it meets JC477-2005 "Accelerator for shotcrete" and ASTM C1141/C1141M-08 Standard Specification for Admixture for Shotcrete Standard Performance Specifications and Requirements.

3. The early strength of concrete is high, and the 1d strength of the mortar specimen can exceed 10MPa; the later strength decreases less, and the 28-day strength ratio can reach 90% to 100%.

4. The alkali-free concrete accelerator has no adverse effect on the durability of concrete. Since the alkali-free accelerator does not contain alkaline substances, it greatly reduces the damage caused by the introduction of alkaline substances to concrete, such as alkali bone Material reaction; at the same time, the content of Cl- is strictly limited to avoid corrosion of steel bars.

5. The alkali-free concrete quick-setting agent has no dust during the spraying process and reduces the amount of rebound, thereby protecting the health of construction workers and reducing the waste of materials.

6. The hard concrete hardened by an alkali-free accelerator has good compactness and impermeability and can be prepared with high-strength sprayed concrete.

7. The non-alkali concrete quick-setting agent has a low rebound rate and saves costs.

8. The degree of mechanization is high, and the project's progress is fast. The alkali-free accelerator is mainly used in wet spraying technology, which has a high degree of mechanization, can greatly reduce labor consumption, and at the same time, can greatly reduce tunnel support time and speed up construction progress.

What is alkali-free concrete accelerator used for?

In sprayed concrete construction, the non-alkali concrete quick-setting agent can make the mortar or concrete set and harden rapidly quickly, ensuring that the strength will not be lost later. The alkali-free concrete quick-setting agent has a wide range of cement applications, and is mainly suitable for sprayed concrete wet spraying construction and leak prevention and plugging in hydropower, highways, subways, railways, coal, bridges, mines, shafts, underground tunnels, national defense, and other projects, Ground concrete rapid construction and concrete emergency rescue projects.

What is the composition of the alkali-free concrete accelerator?

Alkali-free concrete accelerators are usually in liquid form. They are mainly composed of aluminum salts and alkanol amines, which are beneficial in reducing long-term strength loss and durability problems compared to alkali-containing accelerators.

Alkali-free Concrete Accelerator Supplier

TRUNNANO is a reliable alkali-free concrete accelerator supplier with over 12-year experience in nano-building energy conservation and nanotechnology development.

If you are looking for high-quality alkali-free concrete accelerator, please feel free to contact us and send an inquiry. (sales@cabr-concrete.com)

We accept payment via Credit Card, T/T, West Union, and Paypal. TRUNNANO will ship the goods to customers overseas through FedEx, DHL, by air, or by sea.

What is Vitamin C?

Vitamin C is a water-soluble vitamin, chemically named L-(+)-threose type 2,3,4,5,6-pentahydroxy-2-hexenoic acid-4-lactone, also known as L- Ascorbic acid has a molecular formula of C6H8O6 and a molecular weight of 176.12. Vitamin C is usually flaky, sometimes needle-like monoclinic crystals, odorless, sour, soluble in water, and has strong reducibility. Vitamin C is used as an analytical reagent in the laboratory, such as a reducing agent, a masking agent, etc., and as a building material admixture in construction projects.

Features of Vitamin C

1. The appearance of vitamin C is a colorless crystal.

2. The melting point of vitamin C is 190-192°C, the maximum ultraviolet absorption is 245nm, and the specific rotation is +20.5° to +21.5°.

3. Vitamin C is easily soluble in water but insoluble in organic solvents. Vitamin C is stable when it is in an acidic environment, and it can promote its oxidative destruction when it encounters oxygen, heat, light, and alkaline substances in the air, especially when oxidase and traces of copper, iron, and other metal ions exist. Vitamin C can easily cause deterioration when it encounters air and heating, and it is easy to oxidize and become invalid in an alkaline solution. Vitamin C deteriorates rapidly in aqueous solution, is a strong reducing agent, and is stable to air when dry.

4. Vitamin C contains asymmetric carbon atoms and has optical isomers. The naturally occurring and physiologically active form is L-ascorbic acid.

5. The enediol group in the molecular structure of vitamin C, especially the OH at the C3 position, is strongly acidic due to the conjugation effect (pK = 4.17); the OH at the C2 position is extremely weakly acidic due to the formation of intramolecular hydrogen bonds (pK =11.75). Therefore, vitamin C generally behaves as a monobasic acid, which can react with sodium bicarbonate to form sodium salt.

6. Vitamin C is widely distributed in animals and plants.

What is vitamin C used for?

Ascorbic acid (vitamin C), a building material admixture, has been used in construction projects such as highways, high-rise buildings, bridges, and culverts and can be compounded with it. It is an excellent water reducer additive.

Vitamin C contains many strong polar functional groups, carboxyl and hydroxyl groups. These groups provide dispersion and mobility to concrete particles through adsorption, dispersion, wetting, and other surface activities and reduce frictional resistance between cement particles. The free energy of the particle-water interface increases the workability of fresh concrete. At the same time, polycarboxylic acid substances are adsorbed on the surface of cement particles. The carboxylate ions make the cement particles negatively charged, thereby causing electrostatic repulsion between the cement particles and dispersing the cement particles, resulting in inhibition of the aggregation tendency of the cement paste, increasing the contact area between cement particles and water, making the cement fully hydrated. In diffusing cement particles, the free water surrounded by aggregates is released, improving workability and reducing the mixing water.

Is ascorbic acid the same as vitamin C?

Vitamin C, aka L-ascorbic acid, is a water-soluble vitamin that occurs naturally in some foods. It is added to others and is available as a dietary supplement. Humans cannot synthesize vitamin C endogenously, unlike most animals, so it is an essential dietary component.

Concrete Release Rgent Supplier

TRUNNANO is a reliable vitamin C supplier with over 12-year experience in nano-building energy conservation and nanotechnology development.

If you are looking for high-quality vitamin C, please feel free to contact us and send an inquiry. (sales@cabr-concrete.com)

We accept payment via Credit Card, T/T, West Union, and Paypal. TRUNNANO will ship the goods to customers overseas through FedEx, DHL, by air, or by sea.

What is triterpene saponin air-entraining agent?

Triterpene saponin air-entraining agent is a plant-based air-entraining agent. The air-entraining agent is an admixture that introduces many uniformly distributed micro-bubbles into the mortar and concrete during mixing and can remain in them after hardening. It is mainly used to improve the workability and consistency of plastic mortar and concrete, reduce bleeding and segregation, and improve the durability of hardened mortar and concrete. It is composed of a small part of surface-active substances.

Features of Triterpene Saponin Air-entraining Agent

1. The appearance of triterpene saponin air-entraining agent is light yellow powder.

2. Triterpene saponins are easily soluble in water and have strong chemical stability in acids, alkalis, and hard water.

3. Triterpene saponin is an amphiphilic compound that can form a stable foam in water and is often used to make detergents, foaming agents, and emulsifiers.

4. The dosage of triterpene saponins is small, and the cost of use is low. The number of air bubbles that can be introduced into the concrete is as many as 1 billion, and the introduced air bubbles are discontinuous closed spheres with a pore diameter range of 0.02-0.2 mm, uniform distribution, and good stability.

What is triterpene saponin air-entraining agent used for?

The air-entraining agent is primarily used to enhance the concrete's ability to withstand frost and protect it against the corrosive effects of deicing salt on road surfaces. In addition, air-entraining agents can also improve many properties of concrete, such as reducing bleeding, improving fluidity and permeability, and improving resistance to cracks caused by alternating expansion and contraction. The triterpene saponin air-entraining agent has a small dosage, which can improve the performance of concrete. When the air content is less than 3%, the strength of the concrete increases slightly; when the air content increases, the strength of the concrete decreases continuously. When the air content in the coagulation is 3%~6%, the frost resistance and impermeability are improved.

What is the chemical composition of the air-entraining agent?

Air-entraining agents usually contain rosin resin, alkyl sulfonate, fatty alcohol sulfonate, protein salt, and petroleum sulfonate, among which rosin resin is widely used.

Triterpene Saponin Air-entraining Agent Supplier

TRUNNANO is a reliable triterpene saponin air-entraining agent supplier with over 12-year experience in nano-building energy conservation and nanotechnology development.

If you are looking for high-quality triterpene saponin air-entraining agent, please feel free to contact us and send an inquiry. (sales@cabr-concrete.com)

We accept payment via Credit Card, T/T, West Union, and Paypal. TRUNNANO will ship the goods to customers overseas through FedEx, DHL, by air, or by sea.