Q:What is the main role of fly ash added in concrete products?

The workability of fresh concrete can be improved by adding fly ashThe workability of fresh concrete is affected by the volume, water cement ratio, gradation, shape and porosity of the aggregate. The fly ash is used for fresh concrete is the obvious benefits of increasing the slurry volume, slurry filled with aggregate between pores, inclusions and lubrication of aggregate particles, so that the concrete mixture has better cohesiveness and plasticity. The aggregate particles of fly ash can reduce the interfacial friction between the paste and aggregate, and improve the workability of the concrete mixture at the contact point of the aggregate.

Q:What's the difference between white carbon and carbon black? Can they be replaced?

Carbon black is the floorboard of white powder X- ray of amorphous silica and silicate products, mainly refers to the precipitated silica, fumed silica, ultrafine silica gel and gel, including powder synthetic aluminium silicate and calcium silicate. Silica is a porous material, its composition by SiO2 nH2O, where nH2O is there the surface hydroxyl form. Soluble in caustic and hydrofluoric acid, insoluble in water, solvent and acid (except hydrofluoric acid). High temperature resistant, non flammable, tasteless, odorless, has the very good electric insulation.

Q:What are the three major effects of fly ash in concrete?

The "activity effect" of fly ash is also known as the pozzolanic effect because it contains a large amount of active SiO and AI. With Ca (OH) and other basic chemical reactions, C-S-H, hydrated calcium aluminate cementitious material, the fly ash concrete products and can serve to strengthen the role and blockage of capillary tissue in concrete, improve the corrosion resistance of concrete.

Q:What is the best price for the use of calcium silicate ceiling?

Water will melt or become yellow, mildew. So if you choose their ceiling, you must first deal with the roof leak. Calcium silicate board with artificial and material prices of about 22 square meters, mainly for office space, and residential corridors and other public places decoration. Integrated ceiling is not afraid of water.

Q:What kind of insulation material can withstand 350-600 degrees of high temperature?

Suggest that you refer to the above two data to choose from, select only from the temperature, you can use

Q:What are the raw materials of cement products? What's the function?

Cement has a great influence on the properties of concrete. The kinds and quantities of cement containing minerals and the fineness of cement will affect the quality of cement products. The calcium silicate three in cement is an important factor in the coagulation of cement products. The reaction between three calcium silicate and water leads to the production of hydrated calcium silicate, and the hydrated calcium silicate gel acts as a cementing agent for aggregate and aggregate in concrete.

Q:The ceiling of calcium silicate board and mineral wool board which is good

Calcium silicate board with fire prevention, moistureproof, sound insulation, thermal insulation, indoor air in wet conditions can attract water molecules in air, air drying, and the release of water molecules, can adjust the indoor humidity, dry, increase comfort.Natural gypsum products and special fireproof material, the flame can produce endothermic reaction, at the same time, the release of water molecules to prevent the fire from spreading, and does not produce any toxic decomposition, corrosive and choking gas, will not produce any smoke or combustibles.Mineral wool board is mineral fiber cotton as raw material, the biggest characteristic is to have good sound absorption and heat insulation effect.

Q:What are the high temperature resistant insulation materials at 400?

Foam heat insulation material mainly includes two categories: polymer foam type insulation material and foam asbestos insulation material. Polymer foam heat insulation material has the advantages of small absorption rate, stable heat preservation effect, low thermal conductivity, no dust flying in construction, easy construction, and so on. It is in the period of popularization and application. Foam asbestos thermal insulation material has the characteristics of small density, good thermal insulation and convenient construction, and its popularization and development is relatively stable, and the application effect is better. But at the same time there are some defects: for example, foam cotton is easy to damp, immersed in water easily dissolved, elastic recovery coefficient is small, can not contact the flame and in the wall pipe parts use.

Q:Asbestos free calcium silicate board there is a crack in the kettle, what is the reason?

A slab of calcium silicate board production equipment to the emergence of the phenomenon of billet stick (stick billet refers to the calcium silicate board blank attached to the molding cylinder, in shaping cylinder knife when tearing into the surface depression caused by repeatedly feeding back, yield, effect in this case a two quality, three lead to rising production costs)There are two reasons for the phenomenon of sticking: first, the slurry temperature is low, viscosity is big; two, the material is not dehydrated enough, and the moisture content is high.The solution is: 1, improve the slurry temperature, slurry concentration decreased, but the slurry temperature should not exceed 45 DEG C; 2, in the premise of not causing product layer under the vacuum degree increasing, strengthen dehydration, reduce water blanks.

Q:Eterpan with calcium silicate is sold on the market are the same thing? Non asbestos calcium silicate board is Eterpan it

Aitken is a brand of non asbestos calcium silicate board is a product name