EVALUATION OF THE CAUSES AND PREVENTION OF CRACKS IN RESIDENTIAL BUILDINGS



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EVALUATION OF THE CAUSES AND PREVENTION OF CRACKS IN RESIDENTIAL BUILDINGS



ABSTRACT

Cracking is the most difficult and puzzling problem for the engineers today. Many designers are trying to eliminate the problems of cracking , but cracking is unavoidable response of any structure. Since cracks are the most common type of problem in buildings, It is very necessary to understand the causes and remedial measures required to be undertaken for preventing cracks, As cracks in various types of building structures cannot be eliminated completely but can be prevented and controlled by using adequate materials which enhances the properties of the structure and also adopting required changes in design criteria. Due to some faulty designs and other unavoidable factors cracks start developing on various structural and non-structural parts of the building. Hence, timely measures should be adopted to prevent and control cracks and its formation. Not all the cracks developed are harmful but there are some type of cracks which can be severely structurally hazardous. In this paper we will discuss about several problems engineers are facing, why and how the cracks are formed? And how these cracks can be prevented and controlled.

CHAPTER ONE

INTRODUCTION:

Nowadays there is limited or reduced availability of resources for new constructions due to which civil engineers have tendency to rely on existing structures and extending the life span of the same structures. Due to this, the difficulties caused are:- 1) More repair and maintenance is requires on existing structure. 2) New technologies and experiments have to be adopted to maintain and improve existing structures and also new structures that have to be developed. Cracking is the most common phenomenon and is often the most misunderstood when one sees crack in wall or any other part of structure, the person immediately assumes that something is wrong. This is not true always. Cracks can be primarily of many types. Activecracks are the ones which keep on growing over in a particular direction. Other types of cracks called as Inactive cracks also called as Dormant cracks which are initially not so dangerous but if left unrepaired can cause damage in the long-run. Cracks are mostly developed due to deterioration of concrete and due to corrosion of reinforcement provided due to faulty design and poor construction or by many other factors like temperature and shrinkage properties. Cracks can be primarily divided into two main groups:- 1) Structural cracks: Structural cracks are formed due to faulty design, faulty construction which heavily risks the safety of a building. Examples of structural cracks are the cracks in beam, column, slabs and footings. 2) Non-Structural cracks: Non-Structural cracks are the result of induced stresses in building constituents and due to internal forces developed due to variation in moisture content, temperature variation, crazing etc. Examples of Non-Structural cracks are cracks on parapet wall, drive-way etc. 2.

CAUSES :

Principal causes of the occurrence of cracks in the buildings are as follows:- 2.1) Moisture variation: Building materials majorly have pores in their burnt clay bricks, mortar, some stones etc. These materials expand on absorbing moisture and contract or shrink on drying. These movements are cyclic in nature and are caused due increase or decrease in the pore water pressure, extent of these movements also depends on molecular structure of a material. The various effects of moisture changes are:- a) Initial shrinkage. b) Reversible movement.

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All Project Materials Inc. (2020). EVALUATION OF THE CAUSES AND PREVENTION OF CRACKS IN RESIDENTIAL BUILDINGS. Available at: https://researchcub.info/department/paper-7313.html. [Accessed: ].

EVALUATION OF THE CAUSES AND PREVENTION OF CRACKS IN RESIDENTIAL BUILDINGS


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ABSTRACT Cracking is the most difficult and puzzling problem for the engineers today. Many designers are trying to eliminate the problems of cracking , but cracking is unavoidable response of any structure. Since cracks are the most common type of problem in buildings, It is very necessary to understand the causes and remedial measures required to be undertaken for preventing cracks, As cracks in various types of building structures cannot be eliminated completely but can be prevented and controlled by using adequate materials which enhances the properties of the structure and also adopting required changes in design criteria. Due to some faulty designs and other unavoidable factors cracks start developing on various structural and non-structural parts of the building. Hence, timely measures should be adopted to prevent and control cracks and its formation. Not all the cracks developed are harmful but there are some type of cracks which can be severely structurally hazardous. In this paper we will discuss about several problems engineers are facing, why and how the cracks are formed? And how these cracks can be prevented and controlled... Click here for more

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