Concrete used for playground equipment is typically a special type of high-strength, durable concrete designed specifically for outdoor use. This type of concrete is often reinforced with steel to provide additional strength and stability. It is also formulated to withstand the elements, including exposure to moisture, temperature changes, and heavy use. Additionally, the concrete used for playground equipment is often textured or finished to provide a non-slip surface for safety. **

Estrich concrete is commonly used in model construction due to its smooth finish and ability to hold intricate details. It is a versatile material that can be easily molded and shaped to create precise models. The strength and durability of estrich concrete make it ideal for creating long-lasting models that can withstand handling and display. Overall, its properties make it a popular choice for model makers looking to create high-quality and realistic models. **

Yes, concrete can be used in construction during the winter, but special precautions need to be taken to ensure that it sets properly. Cold weather can slow down the setting and curing process of concrete, so it is important to use additives or heated water to maintain the proper temperature for curing. Additionally, protective measures such as insulating blankets or heated enclosures may be necessary to prevent freezing. Overall, with the right precautions, concrete can be successfully used in construction during the winter. **

Around 1890, Portland cement was the most commonly used concrete in house construction. This type of concrete was widely available and offered a strong and durable material for building foundations, walls, and other structural elements. Portland cement concrete was also used in combination with other materials such as bricks and stones to create a variety of architectural styles popular during that time period. Its widespread use contributed to the growth of urban and suburban development during the late 19th century. **

Construction machinery such as cranes, forklifts, and bulldozers are not typically designed to move furniture. While some machinery may have the capability to lift and transport heavy objects, they are not suitable for moving furniture due to the risk of damage. It is recommended to use specialized moving equipment or professional movers to safely transport furniture. **

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. **