Changsha foam concrete

What is lightweight concrete
Lightweight concrete, also known as foamed cement and foam concrete, is a new building energy-saving material with waste utilization, environmental protection, energy conservation, low cost and non combustibility
Foam concrete is a concrete product with a large number of small closed pores and considerable strength, which is formed by introducing air, nitrogen, carbon dioxide, oxygen and other gases into the concrete paste through chemical or physical means according to the application needs, and after reasonable curing and forming
The production of foam concrete is usually a kind of porous material, which is prepared from the aqueous solution of foam agent into foam by mechanical method, and then add foam into the slurry composed of silica materials, calcareous materials, water and various admixtures, and then mix, pour, form and maintain
  Henan Huatai Building Materials Development Co
, Ltd
has many years of experience in foam concrete production, and is also the largest foam concrete production enterprise in China
Over the years, Henan Huatai has been unremitting, and has embarked on a path of independent research and development and practical testing of technology
The HT foam concrete produced by Henan Huatai has developed rapidly in China in recent years, and the scope of application has also been expanding
HT foam concrete products have the following remarkable characteristics:   ① Light weight and high strength  
The density of foam concrete is small
The density grade of common foam concrete is 300-1200kg/m3, which is equivalent to 1/5-1/10 of ordinary concrete The compressive strength is greater than 0
25MPa, and foam concrete products with different strengths can be produced according to the building design requirements
The use of this material in building structures such as internal and external walls, floors, surfaces and columns of buildings can generally reduce the self weight of buildings by about 25%, and some can reach 30% - 40% of the total weight of structures
In recent years, the density is   160  kg/m3
Ultra light foam concrete has also been applied in construction engineering
Due to the low density of foam concrete, it can significantly reduce the self weight of buildings, improve the bearing capacity of buildings, and enhance the seismic capacity of buildings
Therefore, the use of foam concrete in construction projects has significant economic benefits ② Thermal insulation  
  Because foam concrete contains a large number of closed small pores, it has good thermal performance
The thermal conductivity of foam concrete with density grade of 300-1200kg/m3 is between 0
06-0
3w (m
k)
Using foam concrete as building wall and roof material has good thermal insulation and energy saving effect ③ Good sound insulation and fire prevention performance  
  Foam concrete is a porous material with sound absorption capacity of 0
09-0
19%, and has good sound insulation performance
It can be used as a sound insulation layer in building floors, highway sound insulation panels, underground building top floors and other fields
Foam concrete is different from traditional sound insulation materials
It is inorganic and non combustible, so it has good fire resistance and can improve the safety and fire resistance of buildings ④ Low elasticity and earthquake resistance  
  The porosity of foam concrete makes it have a low modulus of elasticity, which makes it have a good absorption and dispersion of impact load
At the same time, the light and high-strength characteristics of foam concrete can effectively reduce the load of buildings by 20% - 40%
The smaller the load of buildings, the stronger the seismic capacity ⑤ Fast construction speed  
  The construction speed of on-site pouring and mechanized construction is 1/3 faster than that of polystyrene foam plastic board Raw materials of foam concrete
① Cementitious materials  
  Cementitious material is one of the indispensable main raw materials of foam concrete, which plays a bonding role
According to the use of cementitious materials, silicon calcium materials, magnesite materials and gypsum materials can be selected, among which Portland cement is the most commonly used cementitious material of foam concrete
The setting strength and setting time of cement with different grades are different
Even the cement with the same grade has different composition due to different manufacturers
Therefore, in principle, for the same cementitious material, large-scale construction can be carried out on the basis of small-scale test
② Blowing agent  
  Foaming agent is the general name of foaming agent, foam stabilizer, binding agent and other additives (composite foaming agent includes the above additives)
Foaming agent is a substance that can react chemically and produce gas
Foam stabilizer refers to surfactant with foam stabilizing effect, such as sodium dodecylbenzene sulfonate, hydrolyzed protein, etc
Binders and other additives refer to substances that can interact with the hydrophilic end of surfactants through hydrogen bonds and strongly adsorb water molecules and the surface of bubbles, such as polyacrylamide, Alain, etc
④ Additives  
  Additives include water reducer, stabilizer, accelerator, early strength agent, waterproof agent, etc
, which can be added (or not) according to the purpose and construction conditions of foam concrete
Hunan Yujie Construction Engineering Co
, Ltd
Contact: Mr
Xiang 13886577456 company website / / www
hnyjjzgc com