Today, we will systematically review common concrete defects and provide you with a practical “Diagnosis and Prevention Manual” from three dimensions: causes, detection, and prevention.
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GBT50082-2024 Standard for Test Methods of Long term Performance and Durability of Concrete
Today, Swordsman will share with you an electronic PDF version of the “Test Method Standard for Long term Performance and Durability of Concrete” (GBT50082-2024).
For us designers, electronic tools are very convenient and fast.
Let’s take a look together~.
Real image recognition of several common concrete cracks
Concrete cracks are physical structural changes caused by internal and external factors in concrete structures, and cracks are the main reason for the decrease in the load-bearing capacity, durability, and waterproofing of concrete structures.
Only by correctly identifying the causes of concrete cracks, taking corresponding measures, and eliminating hidden dangers can we ensure structural safety and normal use.
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Why does the surface of concrete exhibit a “blue-green color”
Hardened slag concrete may exhibit mottled green or blue-green areas on the surface in the first few days after pouring.
This brief appearance is commonly referred to as the “blue-green hue” of concrete.
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The technical leader must be familiar with the template technical standards for the steel-concrete composite construction plan
1) The steel-concrete composite structure has a large number of internal steel bars with large specifications, and the bolts on the steel frame are dense.
The processing of stirrups and hooks is complex, and the binding is inconvenient;.
Why is concrete called ‘concrete’? 80% of engineers are unaware of their origins!
Those who study engineering, especially civil engineering related majors, as well as those engaged in civil engineering project design, construction, supervision, and budgeting, inevitably have to deal with the word “tong” frequently.
Speaking of the word ‘concrete’, it’s a bit awkward.
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Concrete film curing leaves no footprints! This construction site is creative!
In order to reduce the quality problem of floor cracks, the concrete pouring is completed and the surface is immediately covered with film for curing.
Practice has shown that it is indeed effective.
However, due to the fact that the concrete has not yet fully set at this time, people will leave footprints on the film.
The conventional method of covering the film while smoothing the footprints is too cumbersome and has quality hazards.
Let’s take a look at the creativity of this construction site below, which easily solves the problem of people stepping on footprints on concrete film!.
Have you encountered common errors in production management of concrete enterprises?
Most concrete enterprises are private enterprises that adopt family style management and lack professional production management personnel, resulting in many loopholes in production management.
Here, the author shares five common cases that occur in concrete enterprises with colleagues and proposes corresponding preventive measures, hoping to draw attention and prevent similar incidents from happening again.
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The Root Causes and Countermeasures of Concrete Yin Yang Mix Proportion
With the development of our city’s national economy, the demand for concrete is also increasing, and concrete mixing plant projects are being launched one after another.
However, the construction administrative management department did not strictly control the situation, and some mixing plants had unreasonable staffing and incomplete hardware facilities.
However, they passed the acceptance inspection in an abnormal way and obtained the qualification of a construction enterprise.
This phenomenon has caused overcapacity in the region.
In order to survive, various mixing plants compete in price wars and undertake business through entertaining guests, giving gifts, and giving kickbacks to relevant personnel.
In order to reduce costs, the amount of cement used in concrete is reduced and the amount of admixtures is increased.
But the concrete specifications have requirements for the minimum amount of cement, and in order to meet the requirements of the specifications, the yin-yang mix ratio has emerged.
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