Are there alternatives to cement? Whether professional decoration cement can replace construction ce

There is currently a substitute for cement - concrete.

Chinese scientists have invented a new type of building cementitious material that imitates geogenesis - "tref". This will be metallurgical slag, fly ash, coal gangue.

and other industrial wastes are "condensed" into "stones" after grinding, compared with ordinary cement, in terms of strength, density, corrosion resistance, and production cost.

and cleaner production and many other aspects are very prominent.

"Stone" technology"Stone" technology is a research achievement of the National High-tech Research and Development Program (i.e., the 863 Program). by Tsinghua University.

Professor Sun Henghu's invention of this high-tech with completely independent intellectual property rights has obtained a number of national patents. This technology has passed the project appraisal under the auspices of the Ministry of Education on the 12th, and the next step will be submitted to the National 863 Program.

of the competent authorities for acceptance. Geological studies have shown that natural volcanic ash and other substances can be transformed into long-term stable aluminosilicate through sedimentation and metamorphism under normal temperature and pressure conditions.

Rock. The "concrete" technology is based on the principle of geodetic diagenesis, with various industrial wastes (such as metallurgical slag, fly ash, coal gangue, red mud and other industrial solid wastes) as the main raw materials, with a small amount of diagenesis agent, to produce high-performance new building materials - silicon-aluminum based cement products under normal temperature and pressure conditions. The use of concrete experts believe that "concrete" has a variety of advantages compared with ordinary cement, such as:

The production process is "cold operation", which saves energy and does not emit CO2.

The production process greatly reduces smoke and dust, does not destroy natural resources, and does not pollute the environment; The strength, density, corrosion resistance, freeze-thaw resistance and other aspects of "concrete" concrete have excellent performance; Using all kinds of waste residue as raw materials, the "slag eating amount" can reach more than 90, which is the most effective way to treat waste residue; Low production cost, simple process, etc. "Stone" technology is of great significance to solve the environmental and resource bottleneck problems of some industries in China. At present, there are billions of tons of solid waste in the country, and coal gangue alone is as high as 3.4 billion tons.

These solid emissions are also increasing at a rate of 1 billion tonnes per year, causing enormous environmental pressure. Fly ash alone, the country's annual treatment cost of 6 billion yuan. In addition, China's limestone recoverable reserves suitable for firing cement are 25 billion tons, which is only enough for more than 30 years based on cement production in 2003.

Once the "concrete" technology is adopted, this huge amount of solid waste will become an excellent raw material for the production of high-quality cement-like cementitious materials - "concrete". Some experts said that in terms of building cementitious materials, human beings have experienced a thousand years of lime "triple soil" era and a hundred years of cement "concrete" era. The emergence of "stone-based" technology is likely to mean that mankind is about to usher in a new era of "stone-setting".

Major Inventions of Chinese Scientists A few days ago, China's major authoritative news organizations successively reported the news that Sun Henghu, a professor at Tsinghua University, had successfully invented the "concrete" technology. According to reports, the product obtained by this technology is a new material that is more widely used than cement, uses industrial waste residue as raw material, and can reduce environmental pollution. Relevant experts believe that this invention not only solves the problem of reuse of industrial waste, but more importantly, the production cost of "concrete" is much lower than that of traditional cement, and completely solves the problem of environmental pollution in the production process of cement.

It is understood that the "concrete" technology is a research achievement of the national high-tech research and development plan, that is, the "863 plan". This technology with completely independent intellectual property rights has obtained a number of national patents. 90% of the raw materials are industrial waste The "concrete" technology uses "geomimicry", which is similar to "bionics", that is, "artificial stone" is produced by imitating the geological formation process of rocks.

"Concrete" is produced under normal temperature and pressure conditions from industrial wastes, such as metallurgical slag, fly ash, coal gangue, red mud and other industrial solid wastes as the main raw materials, with a small amount of diagenetic agent. Professor Sun Henghu introduced that compared with ordinary cement, "concrete" has a variety of advantages, such as: the production process realizes "cold operation", does not emit carbon dioxide, reduces a lot of smoke and dust in the production process, and reduces environmental pollution.

Unlike traditional cement, which is produced as raw material by blasting rock, the raw material for "Concrete" 90 is industrial waste. Currently, China has billions of tons of solid waste. For fly ash alone, the annual treatment fee for the country reaches 6 billion yuan.

China's recoverable reserves of limestone suitable for firing cement are 25 billion tons, which is only enough for more than 30 years based on cement production in 2003. Once the "concrete" technology is adopted, these solid wastes will become the best raw material for "concrete". It has broad application prospects It is understood that the "concrete" technology has gone out of the laboratory and entered the pilot stage.

Experts believe that this technology has broad prospects for development and application. In the field of construction, "concrete" fully meets the performance indicators of cement commonly used in construction, so it can technically replace cement and be used in all construction fields. In the field of transportation, "concrete" has much higher durability and alkali resistance than ordinary cement products, and is suitable for the preparation of concrete bridges and other transportation facilities.

The comprehensive properties of "concrete" cementitious materials such as acid resistance, alkali resistance and high temperature resistance make it particularly suitable for all kinds of industrial installation projects. Taking the power industry as an example, the boiler chimney supporting the large unit, each cost is about 30 million yuan, which costs half of the overall cost of the acid-proof and heat-resistant engineering part, if the "concrete" is used as a cementitious material to directly pour acid-resistant concrete, not only the overall cost can be reduced by more than half, but also greatly shorten the construction period and extend the service life. As an emerging technology system, the "concrete" technology has just begun, but the multiple advantages of this technology indicate that building materials will usher in a new era.

Not yet waiting.

Decoration paste tiles, no longer use cement mortar, the use of tile adhesive, tile back glue, two decorative materials on the market for a relatively short time, some owners do not know much about these two materials, new paste tile auxiliary materials. Although both materials are used to attach tiles, the construction methods and processes are completely different. Tile chazi back glue is a barrel emulsion liquid, tile binder, is a mixed dry powder material, tile back glue is very high requirements for the flatness of the wall, the wall is uneven paste Qi can not contain the tile, need to pass the leveling treatment can be.

Hello dear!! It can be, but the decoration cement is more expensive, not cost-effective, too wasteful From the perspective of environmental protection, the environmental protection level of construction cement cement is not enough, if the formula ratio is improper, it is easy to ash and sand. In terms of shrinkage and wear resistance, the shrinkage of construction cement is not good, it is easy to crack, form cracks and has poor wear resistance, and it is generally only used for outdoor projects with low budgets, but the application range of decoration cement is very wide.

And its finished surface thickness can be between 1 mm, which can make a very beautiful seamless, flowing, continuous surface family roll. Strong shrinkage, wear resistance and durability. In terms of permeability, ordinary cement is not waterproof or oil-proof, while microcement as a surface material is not waterproof, but the construction will cooperate with the use of sealant, and sealant has waterproof characteristics.

Therefore, even if the decoration cement is used in the kitchen and bathroom, it can be oil-proof and mildew-proof.

Kiss! Hello, happy to answer your <>

Cement-friendly is a small substitution of open available material cement: powdered hydraulic inorganic cementitious material. After adding water and stirring into a slurry, it can be hardened in the air or in water, and can firmly cement sand, stone and other materials together.

The early lime-to-pozzolanic mixture is similar to modern lime pozzolana cement, cementing crushed concrete to harden and resist erosion from fresh or salt water. For a long time, as an important cementitious material, it has been widely used in civil construction, water conservancy, national defense and other projects. (1) General cement tung burning:

Cement is usually used in general civil engineering and construction projects. General cement mainly refers to the six categories of cement specified in GB175-2007, namely Portland cement, ordinary Portland cement, slag Portland cement, porosyl Portland cement, fly ash Portland cement and composite Portland cement.

2) Special cement: cement for special purposes. Such as:

G-grade oil well cement is empty, and road Portland cement. (3) Characteristic cement: a certain cement with outstanding performance.

Such as: fast-hardening Portland cement, low-heat slag Portland cement, expanded sulfoaluminate cement, phosphoaluminate cement and phosphate cement. Hope mine can help you <>

Do you have any other questions?

Hello! The main components of cement are: calcium carbonate (CaCO3) and silicon oxide (SiO2).

Aluminium oxide (Al2O3) and ferric oxide (Fe2O3) are prepared in accordance with the physical and chemical standards and specifications specified by the company, and the preparation process of raw materials must be carefully monitored.

Cement is made of limestone (such as limestone, by sheng, marl limestone, etc.) and hidden size clay (such as clay, marl clay, etc.) raw materials, according to the appropriate proportion of raw meal, at high temperature (1300 1450) burned to part of the melt, the obtained clinker with calcium silicate as the main component, add an appropriate amount of gypsum, ground into a fine powder surface made of hydraulic cemented material. Thank you.

Cement is finely ground and mixed by limestone, clay and iron ore powder in proportion, and the mixture at this time is called raw meal. The lead is then calcined, the general temperature is about 1450 degrees, and the product after calcination is called clinker. Then the clinker and gypsum are ground together and mixed in proportion to be called cement.

The cement at this time is called ordinary Portland cement.

Cement is generally divided into ordinary Portland cement, Portland cement mixed with mixed materials and special cement. Portland cement mixed with mixed materials is to add other substances to ordinary Portland cement in proportion and certain processing procedures to achieve special effects, such as slag cement, porosyl Portland cement, fly ash Portland cement, composite Portland cement and so on. The raw materials of these cements are stuffy, and there are more active mixed materials or inactive mixed materials than the original ordinary Portland cement.

Roll imitation. Special cement is somewhat different in material stage and production process, for example, the material of high-alumina cement (aluminate cement) is bauxite and limestone after calcination to obtain clinker, and then ground to become aluminate cement.

There are other characteristics of cement that are less useful, so let's talk about it to the landlord. For example, white cement is mainly used for decoration projects, and the materials are pure kaolin, pure quartz sand, and pure limestone, and the mature material is calcined at a suitable temperature.