Concrete is the most popular building material, characterized by high strength and resistance to heavy loads. The safety of construction and operation of the building directly depends on the quality of concrete. The use of concrete that does not meet the technical parameters leads to such unpleasant consequences as:
- the appearance of cracks;
- construction draft;
- destruction of building elements.
It is more expedient to study the quality of concrete before starting construction. But it is permissible to conduct an examination at any stage of construction or reconstruction of a building. This is true both in relation to industrial and commercial buildings, and multi-storey buildings, private houses. Restoration work also requires an examination of concrete.
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Objects and objectives of the study
Examination may be subject to: 1. Concrete mixtures and mortars at construction sites; 2. Concrete structures at operated or frozen facilities.
The goals of conducting a qualitative examination of concrete are:
- concrete conformity to the specified parameters and characteristics, strength classes, as well as legal norms;
- correspondence of the brand of the material to the purposes of use - a certain material is used strictly for a certain type of construction work;
- setting the service life of a concrete structure;
- presence of chemical impurities;
- Identification of possible defects that affect the cost of construction and restoration work;
- assessment of the possibility of further operation of the object;
- determining the strength and durability of the future building.
All studies are carried out in accordance with the requirements of GOSTs and regulations.
Types of expertise
1. Laboratory research of dry materials.2. Analysis of the poured form of concrete in dynamics.3. Accounting for external factors (temperature, humidity) and the resistance of concrete to them.4. Determination of the qualitative, physical and chemical characteristics of concrete: density, water permeability, uniformity, porosity, frost resistance, abrasion, compression, bending.
Modern examination of concrete is carried out using the method of non-destructive testing: ultrasonic, magnetic and visual examinations, shock impulses, laying in special chambers, separation with chipping, plastic deformation, sensor system. Classic destructive methods still do not lose their relevance, so they remain the most accurate.
The result of the conducted research is the preparation of a detailed construction and technical report.
