Solid clay bricks are an alternative to the national policy of solid clay bricks

The production of red bricks has always been in accordance with the production process of digging soil and mud - billet making - firing, a red brick needs several times its volume of land to make raw materials, and a large amount of soil is required for production, which is bound to occupy a large amount of arable land.

Aerated concrete bricks The concept of aerated concrete is a light porous silicate product made of silicone materials (sand, fly ash and silica-containing tailings, etc.) and calcareous materials (lime, cement) as the main raw materials, mixed with gassing agent (aluminum powder), through batching, mixing, pouring, pre-curing, cutting, autoclaving, curing and other processes. Because it contains a large number of uniform and fine pores after gassing, it is called aerated concrete.

Autoclaved foam concrete brick Autoclaved foam concrete brick: The foaming agent is used to prepare foam through machinery, and the high-quality foam that is not easy to break is forcibly added to the cement-based cementitious material, aggregate, admixture, admixture and water mixed mixture to form a lightweight thermal insulation slurry with a large number of closed pores, and then autoclaved reaction and other processes after pouring and molding. Physical foaming and autoclaved curing are the two main features of autoclaved foam concrete bricks.

hollow bricks. The common raw materials for the manufacture of hollow bricks are clay and cinder ash, which are light and strong, which can save a lot of clay and reduce the weight of the wall, and the holes in the hollow bricks have sound insulation function.

Therefore, no matter from that point of view, the advantages of hollow bricks are great, in order to protect cultivated land and protect the living conditions of human beings, it is better to use hollow bricks. ?

It has the characteristics of low energy consumption, soil saving and waste utilization, convenient construction and light body, high strength, good thermal insulation effect, durability, small shrinkage and deformation, and regular appearance, and is an ideal material to replace sintered clay bricks. Rongsheng refractories provide.

Red bricks will be used to build houses in rural areas, but in recent years, the state has restricted and banned the use of clay solid bricks, and new building materials have been used to replace clay red bricks, which makes friends who are ready to build houses very confused, and they don't know why the state restricts clay solid bricks. So why can't you use clay solid bricks? Why should the use of clay solid bricks be restricted and banned?

Let me give you a detailed answer below.

Why can't you use clay solid bricks?

1. Polluting the environment.

As we all know, a lot of harmful gases will be produced when firing clay red bricks, and most rural brick kilns do not have reasonable environmental protection measures, so these harmful gases will be directly discharged into the atmosphere and pollute the rural ecological environment.

2. Destruction of land.

If you want to produce clay red heart bricks, you need a lot of clay, and the clay comes from **? Land! Many brick kilns for the sake of profit, wantonly destroy the land to produce clay red bricks, undoubtedly, this will seriously destroy the existing land resources, if not controlled, will bring irreversible consequences.

Why does the state restrict clay solid bricks?

1. Environmental protection issues.

Because of the main raw material of red solid clay bricks, China uses more than 1 billion cubic meters of clay resources every year because of the burning of bricks, coupled with the indiscriminate use of many small brick factories, resulting in the destruction of a lot of farmland, plus a lot of waste gas will be produced in the process of burning bricks, which will also cause pollution to the environment, so China has banned the use of red solid clay bricks since 1993, but there are still many small brick factories that burn bricks in violation of regulations.

2. Security issues.

According to the survey, the weighing of red solid bricks will not have any problems in ordinary rural houses, but if high-rise buildings use red solid bricks, the strength will be lower, and the thermal insulation of red solid bricks is too poor, so many places will choose to use inflatable concrete bricks when building high-rise buildings.

3. Use problems.

Those who have seen building houses in the countryside should know that before building a house, they must first soak the red bricks with water before building a house, and some can only use the red bricks after they are thoroughly soaked in water, because the red bricks are small in size, and they are very cumbersome to use, and they also require construction workers to have a certain ability to operate, which is one of the reasons why many places do not like to use red bricks.

Foam concrete blocks can replace clay bricks because of the feasibility and economic benefits of foam concrete blocks compared with clay bricks and red bricks:

a. When building the wall, the ash joints are reduced, the use of red bricks requires cubic mortar per square meter, the use of foam concrete blocks only needs cubic mortar per cubic wall, and the cost of mortar is about 14 yuan per cubic meter of the wall.

B, stucco mortar can be reduced by about 1 3, because its mold production specifications are extremely flat, the error is within 1mm, each cubic block can save about 8-10 yuan than red bricks.

c. Saving labor in handling, due to the light weight of the foam concrete block itself, such as high floors and large amounts, saving about 30 labor handling wages.

D, the wall aging is fast, can greatly save the construction period, from the conclusion of practical operation, the red brick wall each skilled worker only about cubic a day, and the foam concrete block can be built about 6 cubic meters per day, according to the calculation of 50 yuan per person per day, each cubic meter can save nearly 16 yuan only for the cost of building the wall.

E, foam concrete block is a new type of environmental protection material, the state is exempt from wall modification, and the use of red brick construction units must pay 8 yuan per square meter of wall modification.

f. The grade of the house has been improved, and the thermal insulation, sound insulation, heat insulation, seismic resistance, and energy-saving performance have been fully reflected, which can improve the selling point of commercial housing 3, and has become the preferred condition for users to buy houses in major and medium-sized cities.

g. The comprehensive total price is 6-8 lower than that of red bricks, so that the foam concrete lightweight block can fully reflect the best economic and social benefits of the product.

The state will announce the second batch of "forbidden" lists.

By the end of 2010, all cities should ban the use of solid clay bricks, and the annual output of solid clay bricks in the country should be controlled below 400 billion pieces, which is a very difficult task.

By 2010, new buildings in municipalities will be able to save 65% of energy

During the "Eleventh Five-Year Plan" period, the main work objectives are: from 2005 to 2006, the main work is to do a good job in the implementation of the design standard of 50% energy saving for new buildings. Qualified large cities are the first to implement the local standard of 65% energy saving rate.

By 2010, the new urban buildings in the country will fully meet the design standard of 50% energy saving, and the new buildings in the four municipalities directly under the central government and qualified cities will achieve the goal of 65% energy saving; Breakthroughs have been made in the energy-saving renovation of existing buildings, with 25% of the area to be renovated in large cities, 15% in medium-sized cities, and 10% in small cities. Solid clay brick factory will resume the implementation of the 17% VAT rate.

According to reports, in order to promote the innovation of wall materials and the promotion of energy-saving buildings, the state has formulated relevant economic policies, which have effectively played a role in regulation and guidance.

A policy of restraint was adopted on the production of solid clay bricks. In the past ten years, the state has made many restrictions or prohibitions on the land occupation and soil extraction of solid clay brick factories, including the prohibition of new construction, reconstruction and expansion of solid clay brick factories, the levy of mineral resources tax on solid clay brick factories and the resumption of the implementation of the 17% value-added tax rate. On September 26, 2012, the National Development and Reform Commission announced that in order to further promote the innovation of wall materials, save energy resources, effectively protect cultivated land and the environment, promote the comprehensive utilization of resources, and promote the realization of energy conservation and emission reduction goals, China will gradually restrict the use of clay products or prohibit solid clay bricks in hundreds of cities and related counties in Shanghai during the "Twelfth Five-Year Plan" period.

To this end, the National Development and Reform Commission has determined the following overall goals: on the basis of consolidating the achievements of "banning (clay bricks)" in urban areas across the country, carrying out the work of "urban clay restriction (soil products) and county banning", promoting the application of new technologies and new products of new wall materials that save energy and use waste, and promote energy conservation and consumption reduction in the new wall materials industry.

The National Development and Reform Commission also requires that by promoting the "limited sticking" of the city, the county will carry out the "ban" of the county, and promote energy conservation and consumption reduction in the field of new wall materials. During the "Twelfth Five-Year Plan" period, we will promote the national new wall material industry to save more than 10 million tons of standard coal, and strive to reduce the energy consumption of new wall material products by 2015 by 20%, and promote the completion of energy conservation and emission reduction goals in the region.

On the 26th, the National Development and Reform Commission announced the list of the first batch of "limited sticky" cities and "prohibited" counties, including 183 cities that will restrict the use of clay products, and 397 counties that will ban solid clay bricks.

The National Development and Reform Commission said that it would work with relevant departments to organize the supervision and inspection of the work of "urban sticking restriction and county ban".

Ah, sent me this question, I'll try to come and see if it works?

Clay solid bricks, as the name suggests, also means that clay must be used as raw materials for firing in order to make good solid clay bricks. The reality of our country is that a large amount of arable land and arable land is mainly composed of clay.

To make clay bricks, you need clay as a raw material. To get clay is to destroy the land, and to destroy the land is to sacrifice the natural environment on which we depend.

Clay solid bricks are what we often call slab bricks and machine-made red bricks. Its massive use means the destruction of precious national land resources! In order to stop this behavior, the state is now promoting the use of non-clay sintered bricks or non-clay solid bricks!

Fly ash slag or concrete is used as raw materials to replace clay to make fly bricks or concrete hollow bricks, which are widely used in various construction projects. In doing so, it is not only environmentally friendly and saves national resources, but also benefits future generations!

Coal gangue is the inevitable product of the temporal branch of coal mining, which has a certain amount of heat, and can be used as an "additive" for the production of bricks when it reaches the standard of calorific coefficient. The size of the materials mined from the coal gangue is different, and the grasp needs to be produced and used after deep processing, and the so-called deep processing is to crush the large pieces of materials to the fineness that meets the production requirements. It would be better to replace clay bricks with coal gangue.

Henan Zhengjian Machinery, as a professional manufacturer of crusher equipment, has studied this aspect. Coal gangue crusher is developed and produced on the basis of the original single hammer crusher, the same principle, hammering material, material powder, the difference is that the single hammer crusher is a crushing, with a screen multiple hammering ineffective grinding rate is high, wet material can not be crushed; The new type of coal gangue crusher is secondary crushing, one-time forming, and high crushing efficiency.

Now Sanmenxia City, Henan Province is listed as a pilot project of "no sticking" and "no sticking" in the province, and "no sticking" refers to the prohibition of using clay sintered sail skin sensitive products mixed with clay. "Forbidden" is the prohibition of the use of solid clay bricks. The development direction of new wall materials is:

The use of coal gangue, fly ash as the main raw materials of non-clay sintered porous bricks. The purpose of "banning sticking" and "banning reality" is to better promote the comprehensive utilization of resources, promote energy conservation and emission reduction, protect land resources, and reduce environmental pollution. This pilot is the coal gangue crusher produced by Zheng Jian Factory, if the landlord needs it, you can log in to Zheng Jian Machinery to understand.

Clay solid bricks not only have a certain strength, but also have good heat and sound insulation performance, and there will be no condensation on the indoor wall in winter, and it is cheap. Although a variety of new wall materials are constantly emerging, sintered bricks will still be used as a main material in masonry construction projects for a period of time in the future.

Clay solid bricks can be used for building maintenance structures, masonry columns, arches, chimneys, kiln bodies, trenches and foundations, etc. It can be used with light aggregate concrete, aerated concrete, rock wool and other thermal insulation materials to build a light beam wall with bricks on both sides and lightweight materials in the middle. Appropriate steel bars or steel mesh can be configured in the masonry to become a reinforced masonry body, instead of reinforced concrete columns, sorghum, etc.

The excellent clay solid brick is used for the masonry of the clear water wall, and the first-class and qualified products can be used for the masonry of the mixed water wall. Medium pan-oak frost bricks should not be used on damp areas.

Clay solid brick is a solid brick made of clay and admixture added as needed, stirred with water, molding, and roasted at high temperature, mainly used for masonry load-bearing and non-load-bearing walls, and is a widely used building wall material. According to the hardware manual, the density of clay solid bricks is grams per cubic centimeter, that is, 1700 kilograms per cubic meter.

The production and use of clay solid bricks has a history of more than 3,000 years in China. Today, solid clay bricks still dominate the wall materials used in construction projects. Although there are many deficiencies in clay bricks, due to the low cost, simple technology, mature design and construction technology and people's inertia of use, clay bricks will still be one of the main building wall materials for a long time in the future, especially in rural areas.