{"id":8087,"date":"2025-01-08T15:21:46","date_gmt":"2025-01-08T07:21:46","guid":{"rendered":"https:\/\/5starmaterials.com\/?post_type=product&p=8087"},"modified":"2025-04-29T11:12:58","modified_gmt":"2025-04-29T03:12:58","slug":"aluminum-paste-for-aac-block","status":"publish","type":"product","link":"https:\/\/5starmaterials.com\/fr\/product\/aluminum-paste-for-aac-block\/","title":{"rendered":"P\u00e2te d'aluminium pour blocs AAC"},"content":{"rendered":"
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La p\u00e2te d'aluminium pour blocs AAC est \u00e9galement connue sous le nom de p\u00e2te de poudre d'aluminium AAC et p\u00e2te de poudre d'aluminium. L'utilisation principale de la poudre d'aluminium a\u00e9r\u00e9e pour le b\u00e9ton cellulaire est la r\u00e9action entre la poudre d'aluminium, la silice et la chaux vive pendant la production, qui lib\u00e8re de la vapeur pour former une structure poreuse \u00e0 l'int\u00e9rieur du b\u00e9ton cellulaire.<\/p>

AAC is a new type of wall construction material, which is unique in that it is a very lightweight new type of building wall material for external wall insulation. Aerated concrete technology began 100 years ago, China’s technology started late, lagging behind overseas for 40 years. However, the development of China’s aerated concrete industry is indeed very rapid. China’s aerated concrete technology strength has reached the international advanced level.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Introduction of Aluminum Paste for AAC Block<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Aluminum Paste for AAC Blocks is also known as AAC Aluminium Paste and Aluminum Paste Paste. The key use of aerated concrete aerated Aluminum Paste is the reaction between Aluminum Paste, silica and quicklime during the production process, releasing the vapour to form a porous structure inside the aerated concrete.<\/p>

In the mixing link in the production of AAC blocks, the aerated add Aluminum Paste paste mixing tank, fully stirred into the Aluminum Paste paste metering scale, and finally put into the pouring mixer with lime, gypsum, coal ash and other raw materials. Aluminum Paste in the Aluminum Paste can be embodied with the alkaline substances in the aerated concrete pulp to release H2, resulting in bubbles, so that the aerated concrete pulp pescetto caused by the porous structure.<\/p>

As a result, the manufacture of aerated concrete blocks generally weigh 500-700kg\/m3, only equivalent to 1\/4-1\/5 of clay bricks, 1\/5 of concrete is one of the lighter mix. Compared with ordinary brick and concrete structure building, self-weight relief of more than 40 per cent.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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What is AAC\uff1f<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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AAC is to be made of lightweight porous silicate commodities by taking silica materials (sand, coal ash, silica tailings, etc.) and calcium materials (lime, cement) as raw materials, mixing with aerating agent (aluminium powder) and making lightweight porous silicate commodities based on the processes of seasoning, mixing, pouring, pre-cultivation, cutting, autoclaving, and maintenance.<\/p>

Aerating contains a large number of symmetrical and fine pores, so it is called aerated concrete.<\/p>

Essentially, all AAC, including AAC blocks, foamed concrete and concrete with air-entraining agent.<\/p>

Narrowly defined as AAC blocks. Generally classified according to the type of raw materials, process load-bearing efficacy.<\/p>

According to the appearance, AAC can be divided into various specifications of blocks or plates.<\/p>

Based on raw materials, most of the AAC has three kinds: (cement, lime, coal ash aerated brick); (cement, lime, sand aerated brick); (cement, slag, sand aerated brick)<\/p>

AAC can be divided into five types according to its use: non-load-bearing blocks, load-bearing blocks, insulation blocks, wall panels and roofing.
Aerated concrete is characterised by light density, high thermal insulation performance, good sound absorption and certain strength processability, and is one of the earliest and most widely used lightweight wall panel materials in China.
Scope of use of AAC<\/p>

The production and application of non-load-bearing blocks is the most extensive, the bulk density is generally 500 kg\/m3 and 600 kg\/m3, mainly used for structural masonry and partition walls, not load-bearing; load-bearing blocks have a bulk density of 700 kg\/m3 and 800 kg\/m3, the project is load-bearing after special structural treatment; thermal insulation blocks have a general bulk density of 300 kg\/m3 and 400 kg\/m3, mainly used for building exterior walls, the bulk density of 300 kg\/m3 and 400 kg\/m3, mainly used for building exterior walls, the bulk density of 300 kg\/m3 and 400 kg\/m3, mainly used for building exterior walls, the bulk density of 400 kg\/m3, mainly used for building exterior walls. m3, mainly used for building exterior wall insulation; roof and wall panels are reinforced aerated concrete panels, with different hoops according to different uses.\u00a0<\/p>

1\u3001High-level architecture building. Years of practice has proved. The use of AAC in high-rise architecture buildings is economical and reasonable, especially with the inner wall of the block base wall, which has gained general acceptance in the society.<\/p>

2, Earthquake-resistant geographical buildings. Because of the light weight of AAC, its building seismic force is small, which is beneficial to earthquake resistance. Comparison with the brick building, in the same building and seismic conditions, seismic design defence level and the level of earthquake damage is too big a difference. If the brick building to do 7 degrees of defence, will be destroyed. At this time, the aerated concrete building only to do 6 degrees of defence, will not be destroyed. 1975 Haicheng earthquake period, more than 30 porous concrete buildings slightly damaged, while the neighbouring brick buildings were seriously damaged; 1976 Tangshan earthquake period, Beijing Baijiazhuang, a five-storey aerated concrete loaded building weighing only 700kg\/m2. At that time, the seismic intensity of the earthquake was 6 degrees strong, there is no new gap after the earthquake. However, large diagonal cracks occurred in the lower side of the four-storey mixed structure house at 50m.<\/p>

3, The building in the cold region. AAC has a good thermal insulation effect. The thermal insulation effect of its 200mm thick wall is equivalent to the thermal insulation effect of 490mm thick wall, because of its construction in the cold region of the economic benefits of the building is outstanding and competitive.
Fourth, soft plastic roadbed construction. Under the same roadbed conditions, the number of layers of AAC building can be increased, economically favourable. The main disadvantage of aerated concrete is to collect large, low elasticity abrasive, fear of cold. Thus, aerated concrete is not suitable for the following sites, temperature greater than 80 \u2103, acid and alkali environmental damage; long-term wet environment, especially in the cold region.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Quantit\u00e9 de p\u00e2te d'aluminium utilis\u00e9e dans la production d'\u00e9quipements pour le b\u00e9ton cellulaire<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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La quantit\u00e9 de p\u00e2te d'aluminium utilis\u00e9e d\u00e9pend de la densit\u00e9 volumique du CAA. Lorsque l'on utilise de la p\u00e2te d'aluminium de m\u00eame qualit\u00e9, plus la densit\u00e9 volumique du produit est \u00e9lev\u00e9e, plus la quantit\u00e9 de p\u00e2te d'aluminium utilis\u00e9e est faible.<\/p>

En fait, nous pouvons calculer avec pr\u00e9cision la quantit\u00e9 de p\u00e2te d'aluminium utilis\u00e9e en nous basant sur la densit\u00e9 volumique du produit :<\/p>

Bas\u00e9 sur la formule de r\u00e9action de la p\u00e2te d'aluminium rempla\u00e7ant l'hydrog\u00e8ne dans l'eau en milieu alcalin :<\/p>

2AL 3Ca(OH)2 6H2O-3Ca.AI2O3.6H2O 3H2\u2191<\/p>

Selon les statistiques, 2 grammes d'aluminium m\u00e9tal pur peuvent produire 3 grammes de H2, mais dans des conditions standard, le volume de 1 gramme de gaz est de 22,41, et le poids atomique de l'aluminium est de 27. Par cons\u00e9quent, la production de gaz de la p\u00e2te d'aluminium est de :<\/p>

Vo=22.4X1.241\/[3\/2X27]g<\/p>

Selon la formule ci-dessus, la production de gaz de la p\u00e2te d'aluminium dans diverses conditions peut \u00eatre calcul\u00e9e \u00e0 l'aide de l'\u00e9quation de l'\u00e9tat de vapeur (V1\/T1)=(V2\/T2) :<\/p>

Le volume de la CAA peut \u00eatre simplifi\u00e9 en deux parties : l'une est le volume approuv\u00e9 du mat\u00e9riau de base et l'autre est le volume des pores form\u00e9s apr\u00e8s la gaz\u00e9ification de la p\u00e2te d'aluminium. La quantit\u00e9 de p\u00e2te d'aluminium peut \u00eatre calcul\u00e9e en fonction du volume des pores :<\/p>

M aluminium=V pore\/(V2K)<\/p>

Dans le type : M aluminium - la quantit\u00e9 de p\u00e2te d'aluminium utilis\u00e9e dans les produits de l'entreprise (g\/cube) ;<\/p>

K - teneur en aluminium actif<\/p>

Le volume des pores est \u00e9gal au volume du produit, combin\u00e9 \u00e0 la quantit\u00e9 de mat\u00e9riaux et \u00e0 leurs proportions respectives pour r\u00e9duire le volume des mati\u00e8res premi\u00e8res et de l'eau.) Cependant, au cours du processus de production, la production de gaz est affect\u00e9e par de nombreux facteurs tels que les changements de temp\u00e9rature et la consistance de la boue. D'apr\u00e8s les calculs th\u00e9oriques, la quantit\u00e9 de p\u00e2te d'aluminium est impossible et inutile. L'usine choisit en fonction de l'exp\u00e9rience sociale et ajuste \u00e0 tout moment. En r\u00e8gle g\u00e9n\u00e9rale, lors de l'utilisation de la p\u00e2te d'aluminium, la p\u00e2te d'aluminium est ajout\u00e9e dans un rapport de 8\/10 000 de mat\u00e9riaux secs pour produire 600 kg de b\u00e9ton cellulaire cubique.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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Sp\u00e9cification de DEG P\u00e2te d'aluminium<\/strong><\/h2>\n

<\/h2>\n\n\n\n\n\n\n\n\n\n
Nom du produit<\/th>\nContenu solide (%)<\/th>\nAlumine active (%)<\/th>\nDensit\u00e9 en vrac<\/th>\nTaille m\u00e9diane des particules (D\u2085\u2080)<\/th>\nAdapt\u00e9 \u00e0 la CAA<\/th>\n<\/tr>\n<\/thead>\n
DEG-60<\/td>\n70%<\/td>\n\u226596<\/td>\n0.15<\/td>\n58-62<\/td>\n<600<\/td>\n<\/tr>\n
DEG-40<\/td>\n70%<\/td>\n\u226594<\/td>\n0.15<\/td>\n36-42<\/td>\n<500<\/td>\n<\/tr>\n
DEG-35<\/td>\n70%<\/td>\n\u226594<\/td>\n0.15<\/td>\n33-35<\/td>\n<400<\/td>\n<\/tr>\n
DEG-25<\/td>\n70%<\/td>\n\u226594<\/td>\n0.15<\/td>\n25-27<\/td>\n<400<\/td>\n<\/tr>\n
DEG-18<\/td>\n70%<\/td>\n\u226592<\/td>\n0.11<\/td>\n17-19<\/td>\n<350<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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Characteristics and role of aluminium powder (paste) in aerated concrete<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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AAC made of Aluminum Paste can not only react with water to cause H2, and explored the strength of aerated concrete, mainly contains the pore structure of AAC. To form an ideal pore structure, the aerating of Aluminum Paste must be consistent with the thickening and hardening of aerated concrete paste. This requires that the Aluminum Paste not only has more metallic aluminium content, but also has a certain particle size and particle shape to ensure a moderate aerating profile.<\/p>

(1) Aerating capacity of Aluminum Paste<\/p>

The aerating capacity of Aluminum Paste lies in the amount of Aluminum Paste used in AAC. The gassing quantity of Aluminum Paste is the volume of H2 produced by unit mass of Aluminum Paste and fully reacted under the standard state. 1g of metal aluminium, the theoretical value under the standard state, obviously, the more metal aluminium content in Aluminum Paste, the more gassing quantity, the more vital aluminium in aerated concrete paste (can participate in gassing reflection, resulting in aluminium hydroxide, which is known as vitality aluminium; in Aluminum Paste paste, the other index is different from vitality aluminium is the solid point), the actual In the Aluminum Paste paste, another index is solid state point), the actual gas generation is more. Therefore, the Aluminum Paste paste used for aerated concrete is different from that produced with higher purity aluminium ingot (purity above 98%). Aluminum Paste metal aluminium content is generally required to be not less than 98%, dynamic aluminium content of not less than 89% (Aluminum Paste paste is slightly lower).<\/p>

(2) Aluminum Paste particle size<\/p>

The particle size of Aluminum Paste does not affect the amount of gas, but affects the speed of gas. The denser the Aluminum Paste, the larger the specific surface, the larger the surface area to participate in the embodiment. As a result, the faster the duration of gas generation, the faster the speed, the faster the gas generation proceeds.<\/p>

Generally speaking, Aluminum Paste according to the production of strict quality manipulation, particle size is generally maintained within a certain range; however, due to the differences between the production enterprises and production processes, the actual particle size varies greatly, which becomes one of the important factors affecting the reliability of pouring.<\/p>

(3) Particle shape<\/p>

The shape of Aluminum Paste particles has an important influence on the characteristics of Aluminum Paste gas. There are two kinds of Aluminum Paste particle shapes, one is liquid and irregular needle-like, should be produced in the spraying link; the other is broadleaf or irregular fish scale, produced by the spray powder crushing. Liquid spray powder chemical activity is very low, in the AAC slurry basically does not gas. The fundamental reason is that this type of Aluminum Paste is a high temperature molten liquid is compressed air blown into particles, air slowly in the refrigeration link, significant oxidation, resulting in dense alumina purification film, seriously impede the chemical reaction, according to the grinding of Aluminum Paste particles, resulting in bias flat fish scales, there are more new metal surface, and subsequently elevate the area of hair gas reflection. In addition, in the grinding session, the Aluminum Paste particles are milled, impacted, cold rolled, extended and ruptured, which flattens the Aluminum Paste particles with a lot of irregular edges. The metal lattice at the irregular edges is bound to produce more distortions, deformations and cracks into more energetic chemically optimistic areas, which drives the Aluminum Paste to have better gassing characteristics.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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DEG Aluminum Paste: A Superior Air-Entraining Agent for the Construction Industry<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Introduction of Aluminum Paste for AAC Block:<\/span><\/strong><\/p>

Aluminum Paste for AAC Block is a high-performance, safe, environmentally friendly, and cost-effective construction additive widely used in the production of foamed concrete, ALC panels, aerated concrete, and other building materials.<\/span><\/p>

Key Features of Aluminum Paste for AAC Block:<\/span><\/strong><\/p>