Compressive stress in concrete engineering refers to the force that tends to crush or compact the material, while tensile stress refers to the force that tends to pull or stretch the material apart. In concrete, compressive stress is typically the dominant type of stress, as concrete is much stronger in compression than in tension. Tensile stress can lead to cracking and failure in concrete structures, which is why reinforcement such as steel bars are often used to counteract this type of stress. **

To apply concrete on concrete, the existing surface must be clean, free of debris, and properly moistened. A bonding agent or primer should be applied to the existing concrete to ensure adhesion. The fresh concrete mix can then be poured or pumped onto the existing surface and spread evenly using a screed or trowel. It is important to properly cure the new concrete to prevent cracking and ensure a strong bond between the two layers. **

Yes, it is possible to pour new concrete over old concrete as long as the existing concrete is in good condition and properly prepared. The old concrete should be clean, free of any loose debris, and roughened to provide a good bonding surface for the new concrete. Additionally, a bonding agent may be used to ensure a strong bond between the old and new concrete. It is important to consult with a professional to assess the condition of the existing concrete and determine the best approach for pouring new concrete over it. **

For setting lawn edging stones, garden concrete would be the better option. Garden concrete is specifically designed for outdoor use and is more durable and weather-resistant than concrete screed. It also has better adhesion properties, making it more suitable for securing the edging stones in place. Additionally, garden concrete is often formulated to be more resistant to cracking and shifting, which is important for maintaining the integrity of the lawn edging. **

Vacation can be both stress and relaxation, depending on the individual and the circumstances. For some people, planning and organizing a vacation can be stressful, especially if there are a lot of logistics to consider. However, once on vacation, the change of scenery and break from routine can be very relaxing and rejuvenating. It ultimately depends on the person's mindset and how they choose to approach their vacation. **

Steel and concrete work well together because they have complementary properties. Steel is strong in tension, while concrete is strong in compression. When combined, steel can provide the necessary tensile strength to reinforce the concrete, resulting in a material that is both strong and durable. This combination allows for the construction of structures that can withstand heavy loads and forces, making it a popular choice for building bridges, skyscrapers, and other large structures. **

It is unclear whether the concrete belt was poured with the wrong concrete based on the information provided. To determine if the wrong concrete was used, further investigation would be needed to compare the specifications of the concrete used with the requirements for the project. Factors such as strength, composition, and curing methods would need to be considered to determine if the concrete used was indeed incorrect. **

Concrete is a mixture of cement, water, and aggregates like sand and gravel, which hardens over time to form a strong and durable material. Reinforced concrete, on the other hand, is a combination of concrete and steel reinforcement bars or mesh. The addition of steel reinforcement helps to increase the tensile strength of the concrete, making it better able to withstand tension and bending forces. This makes reinforced concrete ideal for structures that need to support heavy loads or resist cracking. **