TYPES OF WATERPROOFING METHODS IN CONSTRUCTION

There are some common types of waterproofing methods used in construction industry. Waterproofing in buildings / structures are generally required for:Basement of structure Walls Bathrooms and kitchen Balconies, decks Terrace or roofs Green roofs Water tanks Swimming poolsThe following waterproofing methods are commonly used in construction:1. Cementitious Waterproofing2. Liquid Waterproofing Membrane3. Bituminous Membrane4. Bituminous Coating5. Polyurethane...

REPAIR OF SMALL AND LARGE CRACKS IN CONCRETE

Repair of small, medium and large cracks in concrete and repair of crushed concrete is required to enhance the strength and durability of damaged concrete members.Repair of small and medium cracks in concrete:Small and medium cracks in reinforced concrete and masonry structures reduce their strength considerably to bear the...

PLASTIC SHRINKAGE CRACKS & ITS PREVENTION IN CONCRETE

Plastic Shrinkage Cracks and Its Prevention in Concrete Cracking caused by plastic shrinkage in concrete occurs most commonly on the exposed surfaces of freshly placed floors and slabs or other elements with large surface areas when they are subjected to a very rapid loss of moisture caused by...

POOR CONSTRUCTION METHODS AND WORKMANSHIP TO AVOID

Poor construction methods and workmanship is responsible for the failure of buildings and structure. The poor construction methods and workmanship is caused due to negligence and inadequate quality control at construction site. The effects of some of the poor construction methods are discussed below: (a) Incorrect...


CRACKS IN CONCRETE DUE TO MOISTURE CHANGE

Building materials such as concrete, mortar, bricks, wood etc are porous in nature and expand by absorbing moisture from atmosphere and shrink on drying. These changes in building materials are cyclic in nature and are caused during moisture changes.But building materials undergo irreversible changes due to change in moisture...

CAUSES FOR DEFECTS IN CONCRETE STRUCTURES

Causes of defects in concrete structures can be broadly categorized as: i) Structural deficiency resulting from errors in design, loading criteria, unexpected overloading, etc. ii) Structural deficiency due to construction defects. iii) Damage due to fire, floods, earthquakes, cyclones etc. iv) Damage...

CONCRETE DAMAGES, DEFECTS AND PREVENTION

Concrete structure damages, defects and its prevention Concrete structures get damaged or defective during its lifetime. The causes for such damages or defects can be many such as poor quality control during construction, overloads on structure, natural calamities, environmental factors etc. But it is essential to restore the strength...

CAUSES OF CONCRETE DAMAGE IN STRUCTURES

Damage to structural concrete can be due to the use of excessive water, poor cement, poor construction practices, improper mixture proportioning, dirty or low quality aggregate, and inadequate curing.

THERMAL CRACKING OF CONCRETE AND PREVENTION

Thermal Cracking of Concrete and Prevention Temperature difference within a concrete structure may be caused by portions of the structure losing heat of hydration at different rates or by the weather conditions cooling or heating one portion of the structure to a different degree or at a different rate...

DESIGN AND DETAILING ERRORS IN CONSTRUCTION

Common design and detailing errors in construction arises due to either inadequate structural design or due to lack of attention to relatively minor design details. These types of design errors are discussed below: (1) Inadequate structural design Due to inadequate structural design the concrete is exposed to greater stress...

LONG TERM SHRINKAGE CRACKING OF CONCRETE

Long Term Shrinkage Cracking of Concrete:Shrinkage is the inherent property of cement paste, which in pure form may shrink up to 1%. Aggregate provides internal restraint that reduces the magnitude of this volume change to about 0.06%. Shrinkage also occurs partly due to hydration of cement. On wetting concrete...

SEALING VARIOUS JOINT TYPES IN BUILDINGS

Protection systems of joints include the sealing of cracks, contraction (control) joints, expansion joints, and construction joints. Joint sealants in concrete minimize the intrusion of liquids, solids, or gases, and protect the concrete against damage.

DISTRESS OF CONCRETE AND REMEDIAL MEASURES

Distress in concrete members occurs with age due to corrosion in reinforcement, loading, settlement of foundations etc. This distress in in building can be found by development of cracks in concrete members such as slabs, beams, columns etc. The cracking of concrete in building is developed in three...

INJECTION GROUTING TYPES AND MATERIALS FOR CONCRETE REPAIR

  Injection grouting is a process of filling the cracks, voids or honeycombs under pressure in concrete or masonry structural members for repairing of cracks, strengthening of damaged concrete or masonry structural members. Grout is a flowable plastic material and should have negligible shrinkage to fill the gap or...

POPULAR ARTICLES

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COMPRESSIVE STRENGTH OF CONCRETE CUBES

To determine the compressive strength of concrete specimens prepared and to verify the strength requirements as desired in the mix design and stipulated in the IS code.