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Characteristics of Pervious Bricks and Attention Problems in Paving Work

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更新时间:2018年06月04日02:09:40 打印此页 关闭 Hits: 1694 Updated: June 4, 2018 02:09:40 Print this page Close
With the acceleration of social development and urbanization, the rapid development of modern construction industry has been promoted, and the skill level of modern urbanization has also been improved.
People's modern quality of life and the improvement of aesthetics require new matching equipment. As an important part of modern urban construction, road tiles are getting more and more attention. How to improve the overall quality of floor tiles in modern cities? Level, has become an important issue for the modern construction and decoration industry.
The article focuses on the characteristics of modern permeable bricks , the construction skills of permeable bricks, and the issues to watch out for, and hopes to provide a certain learning effect for the modern urbanization construction in the future.
Keywords: modern city construction; permeable bricks ; characteristics; construction skills; exploration of Chinese map classification number: TU986.1 document identification code: A article number: 1006.8937 [2016] .06.0157.02 exploration of permeable brick construction process Rong Construction Engineering Co., Ltd., Shenzhen 518000, Guangdong]. Floor tile decoration occupies a very important position in the construction of modern cities. It can be said that it is an important part of modern decoration. Pervious brick construction has attracted much attention for its many advantages and functions. It is widely used in many fields.
1 Characteristics of permeable bricks 1.1 Origin of permeable bricks The original place of permeable bricks was in the Netherlands. In order to prevent the ground from sinking in the surrounding city, a small pavement brick was planned, and 2 mm was reserved between the bricks and the bricks. The gap allows the rainwater to enter the ground from the gap between the bricks. Later, in practice, a new type of brick filled with permeable holes was developed. It has good water permeability and increased the compression and flexural resistance in the brick body because this The type of brick is relatively cheap, and its function is not worse than that of ceramic permeable brick , etc., and then it is widely used in modern urbanization construction and related road laying.
1.2 Advantages of permeable bricks The biggest advantage of permeable bricks is that they are environmentally friendly. It is primarily based on the use of slag waste and waste ceramics produced in industry as basic materials, which are repeatedly processed and manufactured. The color is determined according to the added color material.
This brick can be said to be useful in using renewable ecological resources. It is a modern green and environmentally friendly product. It also has many advantages such as high strength, high water permeability, moisturizing and anti-slip, cold resistance, and noise reduction. The price is relatively cheap and it can effectively solve the urban surface. Hardening the status quo, building a natural ecological environment for modern life, and then being liked by people, it is widely used in modern urbanization construction.
1.3 Features ①Good water and air permeability.
It can make the water enter the ground quickly, reduce the amount of water stored on the surface, and it is useful to make up for the persistence of soil moisture and improve the living conditions of urban plants and soil microorganisms.
② Good conditioning of temperature and humidity, heat island effect, etc.
④ Make the road surface less stagnant, and not skid after snow, which is more convenient for citizens to travel safely.
⑤ The use of unevenness on the appearance of the brick can prevent the reflection phenomenon, together can absorb the noise that occurs when the vehicle is driving, and improve the safety factor of the vehicle.
⑥The permeable bricks have various colors, complicated specifications, and are in line with modern aesthetic concepts. They also embody the advantages of natural simplicity and affordable prices, which can be described as a new type of environmentally friendly products.
2 Select the appropriate type of permeable brick 2.1 General permeable brick This type of brick is usually made of general gravel with special restrictions. It is widely used in pedestrian walkways, civilized squares and other public places. It is a popular decoration material.
2.2 Polymer fiber concrete permeable brick This brick material is granite aggregate, high-strength cement, etc. It is widely used in some important municipal projects and residential areas such as squares and parking lots.
2.3 Colored stone composite concrete permeable brick This kind of brick is mostly a composite product composed of natural colorful granite, marble and porous concrete under pressure. This product is not only high in strength, but also natural in color and rich in surface. It is attributed to more advanced decoration materials. It is widely used in luxury business districts, high-end hotels, and high-end residential areas.
2.4 Color Stone Epoxy Permeable Brick This brick is mostly made of natural color stone and resin through a special process. The color is bright and gives people a high level of beauty. It is mainly used in modern garden landscape engineering and high-end villa areas. And so on.
2.5 Concrete permeable bricks are mostly made of river sand, cement, water, and water-permeable agents. The production cost is relatively low and the operation is simple. It is more suitable for large-area construction, such as in roadways, squares, Garden construction, airport runway and other areas.
2.6 Ecological sand-based permeable brick This is a new type of ecological and environmentally-friendly product made from desert aeolian sand as a material. It is a scientific principle that destroys the external tension of water and is useful for solving technical problems such as dust blockage and water permeability. It is relatively high and is only used in special scales such as Bird's Nest, Shanghai World Expo, and Zhongnanhai Office.
3 detailed construction skills 3.1 pre-preparatory work First of all, the site leveling operation.
Before construction, pay-off operations should be performed, and the construction area should be measured with professional instruments, and the foundation consolidation operations should be carried out strictly according to the drawings. The minimum horizontal line of the lot should be controlled within the normative scale, and the width and depth should conform to the relevant norms.
Then calculate and analyze according to the data obtained from the surveying and mapping, and plan the standard grid according to the style of the axis 12m × 12m, and make corresponding signs on the site to prepare for the next filling.
3.2 The construction skills of the gravel layer are firstly measuring and laying on the prepared foundation, and setting the grid according to the relevant measurement data. Most of the specifications are 12m × 12m styles. Position the four corners of the grid and make special Mark and lay the groundwork for the laying of gravel.
Immediately after the laying of crushed stone, the crushed stone must be rigorously inspected before entering the site. The particle size and material of the crushed stone must conform to the rules of the national rules. All the data are in line with the skills of workers. The first includes the following aspects: It is finishing the drilling.
Before carrying out the concrete pouring construction, it is necessary to perform a cleaning treatment on the boreholes. When arranging the boreholes, the following two methods can be selected first.
One method is the positive circulation method, which only needs to rely on thin mud and appropriate amount of water to remove the particles at the bottom of the borehole. However, the finishing method is not good for the finishing of large-grained gravel; the other method is not good; This sorting method is a reverse circulation form. This sorting method firstly uses the principle of pumping to finish the useful sorting of larger particles of gravel.
Before carrying out the concrete pouring treatment on the pouring pile, the operator should check the relevant pouring equipment, and then carry out the pouring operation after ensuring that the equipment is safe to use.
In the concrete pouring construction, it is necessary to ensure the continuity and compactness of the construction to prevent the outbreak of the pouring interruption due to problems.
It is necessary to arrange related construction personnel to monitor the whole process of pouring. The irrigation concrete pipe is generally divided into several sections and a funnel is added. The pipe must have a certain gap in the steel cage. The diameter of the pipe must be able to keep the concrete flowing smoothly. flow.
Rubber joints should be added at each joint to prevent running air and water.
When the perfusion reaches the final stage, in order to ensure a certain impulse during the perfusion of the radon, it is necessary to ensure that the radon catheter is higher than the water level in the hole by more than 3m.
The 砼 should be irrigated to a height higher than the regular, in order to remove the 砼 mixed with muddy water when the platform is irrigated, and the perfusion condition is detected in real time to obtain accurate pipe depth and time data information.
In addition, during the concrete pouring process, it is necessary to detect the slump of the concrete. The slump is required to be within the range of 180 to 220 mm, and the concrete test block is manufactured on site.
The test blocks were buried on site, and protected under the same conditions as the piles for 28 days before being sent to the laboratory for testing.
The construction personnel should monitor the quality of the above-mentioned key steps, conduct unscheduled spot checks, and make detailed construction records for each process.
After the irrigation is completed, the construction personnel should be arranged to take out the conduit in time and remove the relevant equipment so that the subsequent construction operations can be carried out smoothly [3].
2 Conclusion From the above, it can be seen that the construction skills of bored cast-in-situ piles on the bottom of transmission line towers are about improving the productivity and power of power resources, ensuring the safe transmission of power resources, and promoting the healthy and sustainable development of the power field. Both have important effects, so it is of far-reaching significance to increase the discussion on the construction skills of bored cast-in-situ piles on the bottom of transmission towers.
3.3 Coarse sand cushion construction skills The construction of the coarse sand cushion can be performed only after the laying of the gravel layer. This layer can maintain the flatness of the road surface and also improve the pressure resistance function of the road surface.
The first is to control the quality of coarse sand. The quality of sand must be consistent with the overall planning requirements to ensure quality safety functions.
The second step is to lay coarse layers of sand. After the first layer is evenly laid, flush with water in time to allow the sand particles to be thoroughly penetrated into the gravel gap, and then mechanically compacted and oscillated to make them fully touch and blend. After the first layer is completed, the second layer is laid. The operation process of shaking while rolling and then rolling may be adopted, and the data is tested with professional equipment to ensure the overall function of the base, and then the foundation of the permeable bricks is laid.
3.4 The construction technique of sandless and large-hole concrete is to lay the crushed stone layer first. The relevant requirements are the same as above, but it is not to fill the coarse sand but to wet the crushed stone layer and wash the dust on the surface of the crushed stone with water to make it compatible with Fully bonded concrete.
Then the concrete mud Buddha is over-irrigated. Before the irrigation, it is necessary to ensure that the quality data of the concrete reaches the relevant specifications. The thickness of the laying is about 2 cm on the plane, and then the compaction is performed with a flat plate oscillator with a wooden board. Water-free slurry is sufficient in sandless concrete.
3.5 Laying skills of permeable bricks After the base work is completed and passed the inspection, the top permeable bricks should be laid, and they should be laid in an orderly manner according to the initial plan or the drawing of the bricks. Pay attention to the details of the size of the gaps and the flatness of the surface.
Throughout the entire construction process, the quality of each link will have a certain impact on the whole. Whether it is preparation before construction, detailed operations during construction, or subsequent protection operations, it must be carried out in strict accordance with relevant technical specifications. When purchasing and using in the field, it is necessary to effectively enhance the awareness of quality and safety. For example, the requirements for the sand and gravel in the backfilling process must be carried out according to standard planning. It must not be artificial and rational, to prevent the formation of severe results.
Together, we must strengthen the quality supervision and inspection, and timely correct the violations in the detailed operations and handle them in accordance with the procedures.
The technical requirements for the construction of permeable bricks are relatively high, and various technical specifications must be strictly grasped. For example, in the construction of sand-free large-hole concrete, the survival rate of concrete pouring must be ensured, and plastic film protection measures must be taken. Immediate watering is not allowed. The protection causes the upper layer of pebbles to become loose and non-sticky, which affects the overall function.
After the permeable brick laying project is completed, follow-up maintenance work should be strengthened, and problems should be analyzed and dealt with in time to prevent problems before they occur and prevent greater losses.
5 Conclusion Permeable brick construction skills play an important role in modern urbanization construction. We must intensify research in detailed practice, continuously improve the level of skills, and promote the improvement of overall quality.
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