Due to the scarcity of land resources, the state has developed to promote the use of energy-saving wall materials, such as: autoclaved aerated concrete block wall, and other construction materials in place of clay brick. Autoclaved aerated concrete block as a new type of wall materials, with energy-saving, provincial soil, light, and other characteristics not only save energy, reduce the loss of land resources, but also has good insulation effect, to a large extent, reduce the project cost With the promotion of high value. However, due to its low strength, porosity, water absorption and high-volume, and other major features of its own workers as well as on the performance characteristics of the new materials are not familiar with the construction of improper operation, and other factors, the use of this material is masonry wall Prone to crack, which is a common problem in the construction industry, although not affect the structural safety of buildings affected, but it's beautiful, serious also a direct impact on the use. As a project management is our duty to ensure the quality of the cracks to prevent cracks in the control norms allow. Through the practice of groping and experiment, summed up the utility to better improve the cracks in the masonry is my main goal.
The formation of cracks in the wall a number of factors, both foundation settlement, temperature changes, shrinkage deformation of reasons, there are structural design, materials and construction quality and project management. According to the most common causes of the cracks can be divided into four categories. The first is temperature fracture; Second, drying shrinkage cracks, or shrinkage cracks. As well as temperature and shrinkage cracks resulting from the common; Third, the design of the structure caused by cracks; Fourth, the quality of construction caused the cracks. There are many reasons for the cracks, it is necessary to control all aspects of the technical measures taken by on-site construction management practice to learn, how to deal with the crack I have a deeper understanding of the
Add: I passed the construction site management practice to learn how to prevent cracks with a deeper understanding. To prevent and limit the cracks in the building, involving many factors. Only ideologically attached great importance to the strict demands on management, operation, meticulous, good quality, in strict accordance with the specifications before the crack of the building to eliminate or limit the permitted range, this paper on my own projects Met in the problem, analysis of the common characteristics of the cracks in the wall cracks, as well as the reasons for and against the wall cracks of different reasons put forward their own solutions and preventive measures.
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Because the land resource is deficient, the country has formulated the promoted use energy conservation wall material successively, for example: With steams presses construction wall materials and so on aeroconcrete artificial brick to substitute the loam brick. Steams presses the aeroconcrete artificial brick to take one kind of new wall material, has characteristics and so on energy conservation, province earth, light quality, both saves the energy, reduces the land resource outflow, and has the good heat preservation effect, to a great extent reduced the building cost of projects, has the high promotion use value. However because its intensity is low, the factor of porosity is big, the water-absorptivity is high, and the volume big and so on own characteristic as well as the worker are not familiar with to the new material's performance characteristic in the construction operate and so on factors improper, therefore, uses this material masonry and building wall to be very easy to produce the crack, this is also the architecture industry common failing, although does not affect the structure security, but it affects building's artistic, serious also immediate influence use. Does our responsibility guarantees the project quality for the project management personnel, prevents the crack to produce the crack control in the standard permission scope. Through the practice in fumble and the experiment, summarize practical can the good improvement bricking-up crack method be my essential targets. forms the wall crack the factor to be many, also has the settlement of ground, the temperature change, the air shrinkage distortion aspect reason, also has the design structure, the material and the construction quality, the project management aspect reason. May divide into four kinds according to the origin most common crack. First, temperature crack; Second, drying shrinkage crack, abbreviation desiccation fissure. As well as crack which produces together by the temperature and the air shrinkage; Third, the design structure creates crack; Fourth, the construction quality creates crack. Has the crack reason to be many, must take the technical control measure from various aspects, through the scene construction management's practice study, how I to process the crack to have deeper understanding the question to supplement: Did myself through the job location management's practice study, how to prevent the crack to produce had a deeper understanding. Prevents and limits building's crack, involves various comprehensive factor influence. Only then takes, in the management from the thought in the strict request, the operation meticulous, the good quality pass, only then eliminates strictly according to the code requirement building's crack or limits in permits in the scope, the question which to myself this paper through is in the engineering project which meets, analyzes the common wall crack characteristic as well as has the crack reason, and aims at the different reason which the wall crack produces to propose respectively the different solution and the preventive measure.
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