Energy-saving air-enhanced bricks have many advantages. This is a brick with many bubbles inside and can float on the surface. The academic name is autoclaved aerated concrete blocks, commonly known as gas-filled bricks. Since the aerated bricks do not use clay and are not burned, they can be used as energy-saving and emission-reducing materials and become a new type of wall material that the government mainly promotes and uses.
Aerated brick has been in the city for more than 10 years of production history, and its production process is mainly: using river sand, lime, cement, gypsum according to scientific proportions, through the conveyor belt to transfer a few kinds of materials to the mixer to a powder, against The water is evenly mixed, poured into a large box body to form a gas, and then cut, high-pressure steam curing.
Because the gas-filled bricks are produced internally by “self-fermentation†(internal chemical reactions) and enclosed in bricks, they can bring numerous benefits to the building, including thermal insulation, heat insulation, and sound insulation. The use of gas-filled bricks is particularly extensive, and can be used as internal and external infill walls of frame structures; transformation of old houses, addition of bricks for house building, construction materials for cold storage, materials for construction and materials for thermal insulation and insulation. The pieces of aerated bricks can also be used as lightweight fillers in toilets and low-lying buildings, and are not wasted at all.
Aerated bricks are different from red bricks, they are not hard red bricks and their average density is even smaller than water. The dry capacity is 500-800 kg/m2, which is 1/4 of normal concrete, clay brick 1/3, hollow brick 1 /2, can float on the water. Jiangmen Nanjian New Wall Material Co., Ltd. is one of the oldest companies in our city to produce air-entrained bricks. Wen Rongxiao, general manager of the company, said that when the construction unit uses the air-entrained bricks in the design, it is comparatively solid. For clay bricks (red bricks), the basic cost can be reduced and the cross section of the frame can be reduced. For a building with more than 7 floors, the overall cost can be reduced by more than 5%.
Although it is still not widely used in our city, although the gas-filled bricks are lighter, construction costs can be reduced, but many construction units, especially local construction units, are reluctant to use them.
The person in charge of the Office of Wall Materials Innovation and Building Energy Conservation (City Energy Office) pointed out that among the building wall materials in Jiangmen, about 20% of the air-entrained bricks have been covered, and public buildings have basically used air-entrained bricks. Build a wall. “20% is still small, and in Guangzhou, Shenzhen, Foshan, Zhuhai and other cities, gas bricks have been fully promoted and used. We hope that the city's construction units and the general public can fully and correctly understand and accept the gas bricks for me. The city’s building energy conservation efforts contribute.†This also means that the gas filling bricks market in Jiangmen is very broad and the future is promising.
For the problems encountered in promoting the use of air-entrained bricks, the person in charge of the City Wall Leather Energy-saving Office analyzed that: First, the construction technology is relatively high, and the masonry shrinkage is strong. After proper water soaking, the brickwork can be built without flooding or flooding with excessive masonry. Cracks are prone to occur; the construction method of brickwork and aerated bricks is not the same as bricklaying red bricks. It needs to combine the mortar proportioning, hanging nets, strengthening ribs, and high-limit masonry and other technical measures. Most bricklaying masters are unwilling to change the traditional construction. Method: The original production cost of gas-filled bricks is high, and the price is more expensive, which makes it difficult to enter the market in the early stage. However, the current sales price is almost the same as the prices of other bricks.
The construction methods of the two construction sites are worth learning from the wall wall energy-saving office. They have inspected a number of construction sites using aerated brick walls and found that the construction methods of the Xinghe Road affordable housing project and the Xinhui Country Garden Project are very satisfactory and have unique features.
On many construction sites, many bricklaying masters think that the air-entrained bricks are "difficult to wait and use brick knives to chop the entire area". The author went deep into the Xinghe Road affordable housing project and Xinhui Country Garden Project interview and found that the two site masters are very careful, and they all use cutting machines to cut the gas bricks into small, angular pieces, and the walls are very neat.
The construction unit responsible for the affordable housing project of Xinghe Road introduced the method of construction of their air bricks: watering them first, no more than a few, and immersed in about 2 centimeters; it is strictly forbidden to throw and dump in the process of loading and unloading; Coverage to prevent rain; The fullness of the mortar joints is not less than 80%; Technical exchanges with the workers are conducted to properly handle the mortar joints; During the construction process, the construction team has special personnel to monitor the construction quality with the standard of the model project, and to the problematic Local amendments are made in a timely manner.
Xinhui Country Garden has used 50,000 cubic meters of gas-filled bricks since 2005, and it still needs to use 15,000 cubic meters of construction-in-progress. In addition to standardizing the construction plan, Xinhui Country Garden also formulated the “two defenses†plan based on the opinions of customers and the performance of materials: for example, sand bricks are used at the bottom to prevent leakage; there are also walls of different materials. The interface (such as the junction of the brick wall and the concrete wall) is full of galvanized wire mesh to prevent cracking of the interface due to the expansion coefficient and other factors of different materials. In Xinhui Country Garden, the author saw that using aerated brick walls increases the height of a few bricks by adding a leather reinforcement belt, placing reinforcing steel in the mortar, and using a more solid wall.
Both the Xinghe Road affordable housing project and Xinhui Country Garden project construction personnel all stated that the use of air-entrained bricks to build walls will reduce the labor intensity of handling during the construction phase due to the lightness of the bricks. In particular, vertical transportation can speed up construction. Also due to the lightness of the air-entrained bricks, the building's load-bearing capacity is small and its seismic resistance is enhanced.
Reducing the cost of living for the owners Traditional red bricks will cause a lot of damage to cultivated land. During the firing process, a large amount of carbon dioxide will be produced, while the gas filling bricks will be very low-carbon and will save a lot of expenses for the owners to use the houses.
“When I live in an old house, I need to open the air-conditioner until dawn. Stay here until midnight.†A tenant who entered an energy-saving demonstration project said that when he first moved in, he found that the house was particularly cool, but he did not know at first. That's because air-entrained bricks are playing a role in insulation.
“We now have air-conditioning scheduled until 3am, and the time is at least a half lower.†According to the resident, a three-bedroom home uses 1HP air-conditioning cooling (power consumption is about Kw) for hot seasons to 8 per night. Hours of calculation, the old house to open the air conditioning all night consumes electricity: 0.735 × 8 × 3 = 17.64 degrees, the use of gas-filled brick house only use half a night, save 8.82 degrees per night, with the current residential electricity price of 0.62 yuan / degree, That is, it can save 8.82 × 0.62 = 5.47 yuan per night. The Guangdong hot season generally lasts for 5 and a half months, that is, 165 days. A three-bedroom family lives in an energy-saving building. The annual energy-saving air-conditioning electricity bill amounts to 5.47 × 165 = 902.55 yuan.
Aerated brick has been in the city for more than 10 years of production history, and its production process is mainly: using river sand, lime, cement, gypsum according to scientific proportions, through the conveyor belt to transfer a few kinds of materials to the mixer to a powder, against The water is evenly mixed, poured into a large box body to form a gas, and then cut, high-pressure steam curing.
Because the gas-filled bricks are produced internally by “self-fermentation†(internal chemical reactions) and enclosed in bricks, they can bring numerous benefits to the building, including thermal insulation, heat insulation, and sound insulation. The use of gas-filled bricks is particularly extensive, and can be used as internal and external infill walls of frame structures; transformation of old houses, addition of bricks for house building, construction materials for cold storage, materials for construction and materials for thermal insulation and insulation. The pieces of aerated bricks can also be used as lightweight fillers in toilets and low-lying buildings, and are not wasted at all.
Aerated bricks are different from red bricks, they are not hard red bricks and their average density is even smaller than water. The dry capacity is 500-800 kg/m2, which is 1/4 of normal concrete, clay brick 1/3, hollow brick 1 /2, can float on the water. Jiangmen Nanjian New Wall Material Co., Ltd. is one of the oldest companies in our city to produce air-entrained bricks. Wen Rongxiao, general manager of the company, said that when the construction unit uses the air-entrained bricks in the design, it is comparatively solid. For clay bricks (red bricks), the basic cost can be reduced and the cross section of the frame can be reduced. For a building with more than 7 floors, the overall cost can be reduced by more than 5%.
Although it is still not widely used in our city, although the gas-filled bricks are lighter, construction costs can be reduced, but many construction units, especially local construction units, are reluctant to use them.
The person in charge of the Office of Wall Materials Innovation and Building Energy Conservation (City Energy Office) pointed out that among the building wall materials in Jiangmen, about 20% of the air-entrained bricks have been covered, and public buildings have basically used air-entrained bricks. Build a wall. “20% is still small, and in Guangzhou, Shenzhen, Foshan, Zhuhai and other cities, gas bricks have been fully promoted and used. We hope that the city's construction units and the general public can fully and correctly understand and accept the gas bricks for me. The city’s building energy conservation efforts contribute.†This also means that the gas filling bricks market in Jiangmen is very broad and the future is promising.
For the problems encountered in promoting the use of air-entrained bricks, the person in charge of the City Wall Leather Energy-saving Office analyzed that: First, the construction technology is relatively high, and the masonry shrinkage is strong. After proper water soaking, the brickwork can be built without flooding or flooding with excessive masonry. Cracks are prone to occur; the construction method of brickwork and aerated bricks is not the same as bricklaying red bricks. It needs to combine the mortar proportioning, hanging nets, strengthening ribs, and high-limit masonry and other technical measures. Most bricklaying masters are unwilling to change the traditional construction. Method: The original production cost of gas-filled bricks is high, and the price is more expensive, which makes it difficult to enter the market in the early stage. However, the current sales price is almost the same as the prices of other bricks.
The construction methods of the two construction sites are worth learning from the wall wall energy-saving office. They have inspected a number of construction sites using aerated brick walls and found that the construction methods of the Xinghe Road affordable housing project and the Xinhui Country Garden Project are very satisfactory and have unique features.
On many construction sites, many bricklaying masters think that the air-entrained bricks are "difficult to wait and use brick knives to chop the entire area". The author went deep into the Xinghe Road affordable housing project and Xinhui Country Garden Project interview and found that the two site masters are very careful, and they all use cutting machines to cut the gas bricks into small, angular pieces, and the walls are very neat.
The construction unit responsible for the affordable housing project of Xinghe Road introduced the method of construction of their air bricks: watering them first, no more than a few, and immersed in about 2 centimeters; it is strictly forbidden to throw and dump in the process of loading and unloading; Coverage to prevent rain; The fullness of the mortar joints is not less than 80%; Technical exchanges with the workers are conducted to properly handle the mortar joints; During the construction process, the construction team has special personnel to monitor the construction quality with the standard of the model project, and to the problematic Local amendments are made in a timely manner.
Xinhui Country Garden has used 50,000 cubic meters of gas-filled bricks since 2005, and it still needs to use 15,000 cubic meters of construction-in-progress. In addition to standardizing the construction plan, Xinhui Country Garden also formulated the “two defenses†plan based on the opinions of customers and the performance of materials: for example, sand bricks are used at the bottom to prevent leakage; there are also walls of different materials. The interface (such as the junction of the brick wall and the concrete wall) is full of galvanized wire mesh to prevent cracking of the interface due to the expansion coefficient and other factors of different materials. In Xinhui Country Garden, the author saw that using aerated brick walls increases the height of a few bricks by adding a leather reinforcement belt, placing reinforcing steel in the mortar, and using a more solid wall.
Both the Xinghe Road affordable housing project and Xinhui Country Garden project construction personnel all stated that the use of air-entrained bricks to build walls will reduce the labor intensity of handling during the construction phase due to the lightness of the bricks. In particular, vertical transportation can speed up construction. Also due to the lightness of the air-entrained bricks, the building's load-bearing capacity is small and its seismic resistance is enhanced.
Reducing the cost of living for the owners Traditional red bricks will cause a lot of damage to cultivated land. During the firing process, a large amount of carbon dioxide will be produced, while the gas filling bricks will be very low-carbon and will save a lot of expenses for the owners to use the houses.
“When I live in an old house, I need to open the air-conditioner until dawn. Stay here until midnight.†A tenant who entered an energy-saving demonstration project said that when he first moved in, he found that the house was particularly cool, but he did not know at first. That's because air-entrained bricks are playing a role in insulation.
“We now have air-conditioning scheduled until 3am, and the time is at least a half lower.†According to the resident, a three-bedroom home uses 1HP air-conditioning cooling (power consumption is about Kw) for hot seasons to 8 per night. Hours of calculation, the old house to open the air conditioning all night consumes electricity: 0.735 × 8 × 3 = 17.64 degrees, the use of gas-filled brick house only use half a night, save 8.82 degrees per night, with the current residential electricity price of 0.62 yuan / degree, That is, it can save 8.82 × 0.62 = 5.47 yuan per night. The Guangdong hot season generally lasts for 5 and a half months, that is, 165 days. A three-bedroom family lives in an energy-saving building. The annual energy-saving air-conditioning electricity bill amounts to 5.47 × 165 = 902.55 yuan.
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