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The role of aluminium paste in lightweight concrete is mainly as a foaming agent and its performance directly affects the quality and properties of the concrete.
The role of aluminium paste in lightweight concrete is mainly as a foaming agent and its performance directly affects the quality and properties of the concrete. The following are a few key parameters that affect the performance of aluminium paste:
1. Purity: The purity of an aluminium paste is usually expressed as a percentage. Higher purity usually means that there are more active ingredients in the paste and the foaming effect may be better. For example, 65% purity of aluminium paste means that it may contain other ingredients in addition to aluminium.
2, Active aluminium content: active aluminium content refers to the percentage of aluminium in the paste that can participate in the chemical reaction and produce gas. Higher reactive aluminium content usually means that more gas can be produced during the reaction process, thus forming more foam.
3, Particle size: particle size (D50) means that under certain conditions, 50% of the particles are smaller than this size in diameter. Aluminium paste with smaller particle size can release gas faster and more evenly when reacting with water, which helps to form a uniform foam structure.
4, Non-volatile content: non-volatile content refers to the proportion of non-volatile components in the aluminium paste after heating under specific conditions. This parameter reflects the stability of the aluminium paste in the heating process, the higher the non-volatile content, indicating that the aluminium paste in the heating process, the less the loss of components.
These parameters determine the performance of aluminium paste in lightweight concrete, including its foaming ability, stability and the physical properties of the final concrete.
1. Chemical analysis method: Separate the aluminium element from the sample by dissolving the concrete sample, and then use chemical reagents for quantitative determination. This method has high accuracy, but requires professional laboratory conditions and operating skills.
2、Spectral analysis methods: including atomic absorption spectrometry (AAS), inductively coupled plasma emission spectrometry (ICP-OES) and X-ray fluorescence spectrometry (XRF). These methods can directly measure the content of aluminium element in the sample, with fast and accurate characteristics, but need expensive instrumentation and professional technicians to operate.
*Atomic Absorption Spectrometry (AAS): quantitative analysis using the absorption of aluminium atoms at specific wavelengths of light.
*Inductively Coupled Plasma Emission Spectrometry (ICPES): quantitative analysis by exciting aluminium atoms in the sample and measuring the characteristic spectra emitted by them.
* X-ray fluorescence spectrometry: using X-ray irradiation of the sample, by measuring the fluorescence intensity emitted by the aluminium atoms after being excited to determine the aluminium content.
3. Sieving method: For lightweight concrete containing a high amount of aluminium powder, the aluminium powder particles can be separated from the concrete by sieving and weighed to calculate the aluminium powder content. This method is simple and fast, but the accuracy is relatively low, only for specific cases.
4, Microscope observation method: the use of microscope observation of concrete samples in the form of aluminium powder particles and distribution, combined with image processing technology for quantitative analysis. This method is applicable to the need to understand the distribution of aluminium powder in concrete.
5、Professional testing organisations: If you do not have the conditions to measure by yourself, you can send the samples to professional testing organisations for testing. These institutions usually have advanced equipment and professional technicians, and can provide accurate and reliable test results.
1.Density and weight: the increase of aluminium powder content, the amount of hydrogen produced by the aluminium paste in the concrete increases, leading to an increase in the number of bubbles inside the concrete, thus reducing the density and weight of the concrete.
2.Strength: the right amount of aluminium powder can improve the compressive strength of concrete, because the aluminium powder particles can fill the tiny pores in the concrete, reduce the porosity and improve the compactness. However, when the content of aluminium powder is too high, too many bubbles may lead to loose internal structure of concrete, but reduce the strength.
3, durability: aluminium powder and other components in the concrete reaction, can form new cementitious materials, help to improve the durability of concrete. However, too much aluminium powder may produce unfavourable chemical reactions, affecting durability.
4, Thermal insulation: the increase of bubble structure improves the thermal insulation of concrete, the higher the content of aluminium powder, the better the thermal insulation effect may be.
5.Constructability: the right amount of aluminium powder can improve the fluidity and workability of concrete, and improve the construction efficiency. However, too much aluminium powder may cause the concrete to be too loose, which is not conducive to construction.
The amount of Aluminum Paste used depends on the volume density of AAC. When using Aluminum Paste of the same quality, the higher the volume density of the product, the lower the amount of Aluminum Paste used.
In fact, we can accurately calculate the amount of Aluminum Paste used based on the volume density of the product:
Based on the reaction formula of Aluminum Paste replacing hydrogen in water in an alkaline environment:
2AL 3Ca(OH)2 6H2O-3Ca.AI2O3.6H2O 3H2↑
According to statistics, 2 grams of pure metal aluminum can produce 3 grams of H2, but under standard conditions, the volume of 1 gram of gas is 22.41, and the atomic weight of aluminum is 27. Therefore, the gas production of Aluminum Paste is:
Vo=22.4X1.241/[3/2X27]g
According to the above formula, the gas production of Aluminum Paste under various conditions can be calculated using the vapor state equation (V1/T1)=(V2/T2):
The volume of AAC can be simplified into two parts: one is the approved volume of the base material, and the other is the pore volume formed after the Aluminum Paste is gasified. According to the pore volume, the amount of Aluminum Paste can be calculated:
M aluminum=V pore/(V2K)
In the type: M aluminum-the amount of Aluminum Paste used in the company’s products (g/cubic);
K—-active aluminum content
The pore volume is equal to the product volume, combined with the amount of materials and their respective proportions to reduce the volume of raw materials and water). However, during the production process, the gas production is affected by many factors such as temperature changes and slurry consistency. According to theoretical calculations, the amount of Aluminum Paste is impossible and unnecessary. The factory selects based on social experience and adjusts at any time. Generally speaking, when using aluminum paste, the aluminum paste is added at a ratio of 8/10,000 dry materials to produce 600kg/cubic aerated concrete.
Sugerimos que você se comunique conosco antes de comprar, pois certamente consideraremos todos os aspectos e ofereceremos um plano de preços justo e razoável. Ao nos escolher, você obterá o melhor produto e o melhor valor pelo seu dinheiro.
Choosing the right size of product gives you the best value for money. Our Aluminum Paste for Lightweight Concrete Brick is available in a wide range of particle sizes and purities, with prices varying by specification. By communicating your needs in detail and choosing the right size, you can get the best value for your money.
Quanto maior a quantidade comprada, menor será o preço unitário. Os pedidos em grandes quantidades nos permitem dividir melhor nossos custos operacionais e de produção, por isso temos o prazer de oferecer preços com desconto para compras em grandes quantidades.
O prazo e o método de pagamento que você escolher também afetarão o preço. Por exemplo, o pagamento integral antecipado pode resultar em um preço mais favorável, pois reduz nosso custo de capital. Discuta a opção de pagamento mais adequada com nossa equipe de vendas.
O transporte e a logística também são fatores que afetam o custo total de propriedade. Diferentes modos de transporte e destinos incorrerão em diferentes custos de remessa. Taxas, seguros e outros custos também precisam ser levados em conta. Ao calcular esses fatores antes da compra, você pode estimar com mais precisão o custo total.
At Five Star Materials, our Aluminum Paste for AAC Block produced in a delicate and rigorous process. Below is our basic production process:
Compramos matérias-primas de alta pureza de fornecedores confiáveis para garantir a qualidade de nossos produtos desde a origem.
A matéria-prima é triturada para converter os blocos de alumínio em partículas minúsculas para processamento posterior.
O pó de alumínio triturado é misturado com nossos solventes e aditivos especialmente formulados e, em seguida, misturado em um processo de mistura de alta velocidade. Essa etapa é muito importante, pois determina a estabilidade da pasta de alumínio e o formato das partículas.
Após a moagem, a pasta de alumínio passa por um sistema de filtragem para remover possíveis impurezas. Em seguida, nossa equipe de controle de qualidade realiza uma série de testes no produto, como tamanho de partícula, brilho, sensação metálica etc., para confirmar que o produto atende aos nossos altos padrões de qualidade.
Os produtos que passaram por testes rigorosos são cuidadosamente embalados e armazenados em nossos depósitos, prontos para serem enviados aos nossos clientes.
Observe que esse é um processo básico de produção e que o processo exato pode variar de acordo com os requisitos específicos do produto. Na Five Star Materials, levamos o controle de qualidade muito a sério e garantimos que nossos produtos atendam aos nossos rígidos padrões de qualidade em todas as etapas do processo de produção.
Questions Customers Often Ask When Looking for Aluminum Paste for Lightweight Concrete Brick Factory
1. Is your factory a Aluminum Paste for Lightweight Concrete Brick manufacturer?
Answer: Yes, we are a professional manufacturer of DEG Aluminium Paste with many years of production experience and advanced production technology.
2. What are the quality indexes of Aluminum Paste for Lightweight Concrete Brick in your factory?
Answer:The quality indexes of Aluminum Paste for Lightweight Concrete Brick in our factory are as follows:
Solid containing: 70±1
Delayed aerating time: 1-3 minutes
Activated aluminium: ≥92
Particle size uniformity: high
3. What is the price of Aluminum Paste for Lightweight Concrete Brick in your factory?
A: The price of Aluminum Paste for Lightweight Concrete Brick in our factory depends on the specific model and quantity, please contact us for detailed quotation.
4. What is the minimum order quantity of DEG aluminium paste in your factory?
A:The minimum order quantity of DEG aluminium slurry from our factory is 1 ton,it is depends.
5. What kind of after-sale service can your Aluminum Paste for Lightweight Concrete Brick provide?
Answer:Our factory provides the following after-sales service:
Product quality guarantee
Technical guidance
After-sales service tracking
6. Can your Aluminum Paste for Lightweight Concrete Brick be customized?
Answer: Yes, we can customize the production of DEG Aluminium Paste according to customers’ requirements.
Na Five Star Material, entendemos que cada projeto é único, e nosso objetivo é fornecer as melhores soluções personalizadas para cada cliente.
Seu confiável Pasta de pigmento de alumínio Fornecedor