Rebound method of testing concrete strength of several technical issues

Concrete rebound meter is a testing device for testing the strength of general building components, bridges and various concrete components (beams, slabs, columns, bridges).

Rebound method using concrete rebound meter in the concrete structure measured rebound value and carbonation depth measuring instrument to measure the depth of carbonation of concrete, the integrated two indicators to assess the strength of concrete a non-destructive testing methods, is currently the most commonly used non-destructive testing methods in China. Its method is simple and easy to implement, low cost, and because of the omissions in the relevant standards so that its application in the process of disputes, tug-of-war, the accuracy of the assessment results are also debatable, thus forming an easy to be detached from the objective, subjective human factors are relatively large and other issues.

There are many factors affecting the performance of reinforced concrete structure, based on the current design theory of reinforced concrete structure, a more systematic analysis of the impact of insufficient concrete strength degree of component bearing capacity and durability. The results show that the influence of the size of the order of compression members section bearing capacity --- bending members diagonal section Jian bearing capacity --- bending members section Jian bearing capacity --- tensile members section bearing capacity. At the same time, the lack of concrete strength will also increase the width of cracks in the section of the member and reduce the durability of the member.

Goodway concrete reinforcing agent you how to more quickly and effectively improve the concrete surface resilience value of 10%-40%. Because of the lack of concrete strength will have an impact on the bearing capacity of the structure, cracks and durability, etc., should be based on the degree of its inadequacy, the use of appropriate treatment methods.

Performance and Characteristics of Goodway Concrete Enhancer:

1. Permanent sealing, anti-seepage

With Goodway GWZ820 Concrete Enhancer, concrete is permanently sealed during its life cycle and can delay the penetration of any oil and other substances.

2. Permanently curing concrete

For newly made concrete elements can inhibit the production of fine cracks and temperature difference cracks, permanently curing concrete.

3. Permanent increase in strength and hardness

Can make the components of concrete curing to form a hard entity, forming a three-dimensional spatial network structure, thus increasing the density, strength and hardness of the concrete, and greatly improve the concrete's abrasion resistance and surface weatherability. The surface resilience value of concrete components is increased by 10-40%.

4. Superb bonding ability

The surface of concrete components using Goodway GWZ820 Concrete Enhancer is more conducive to painting, waterproofing, fireproofing, waterproofing coatings, bonding agents and other materials, and any kind of coating materials are extremely compatible with the bond.

Goodway Concrete Surface Enhancer is mainly applied to:

1. The concrete has been poured and molded due to the maintenance, proportion, the use of additives, such as the use of freezing and other reasons for the low strength.

2. Low rebound strength due to carbonation of concrete surface, including: ground, wall, column, bridge, tunnel, etc.

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3. New concrete, cement components painted to extend the service life.

In recent years, with the development of national construction, key projects and large areas of development makes the schedule tight, large volume of work, some areas of the construction unit to ignore the quality of the project, one-sided pursuit of high profits, blind production, resulting in some of the project quality problems, such as: concrete cracks, breakage, lack of strength in the late stage, etc.. Project due to the fixed product, production flow, product diversity, different types of structures, open-air work, harsh natural conditions, material varieties, specifications, different material properties, cross-construction, cross-site work. Process requirements are different, so the quality of the impact of more factors, a little negligence in the construction process, it is very easy to cause serious engineering quality accidents.

Construction project quality management is a highly centralized means of scientific management, therefore, from the project manager to each worker in the mind should have a high degree of quality consciousness, quality is the life of the enterprise, quality is the benefit, in action should be strictly implement the relevant norms, acceptance standards, only in this way can we put an end to and prevent the occurrence of quality accidents, the delivery of satisfactory works.