CONCRETE MAINTENANCE METHODS

1. Why is it necessary to maintain concrete?

Actually we know that the reaction of cement and water is called hydration, and its exothermic reaction releases (heat) so after adding water to the concrete mix the hydration process starts, making Allow the concrete to dry due to the exothermic reaction from the concrete mixture. there for us to cure the concrete to keep it moist.

2. When to start curing concrete?

After the concrete pouring process is completed and the concrete has a shape, you need to immediately cover its surface with moistened materials. At this time, you do not need to water the surface of the structure to avoid damaging the surface. After 24 hours, you can proceed to spray the surface of the mixture with mist. Moisture retention can be done by coating the surface in sunny weather conditions, or the surface may not be needed but regular monitoring is still required to avoid dehydration and cracking of the concrete surface.

3. What is the curing time of concrete?

The minimum time for concrete to reach maximum strength is 28 days.

Concrete can get 50% strength, when we cure for 3 to 7 days; and 75% compressive strength after 14 days and 90% strength can be achieved after 28 days.

4. Concrete curing methods

We can use certain methods to keep concrete moist.

4.1. Moisturizing measures

4.1.1 Pond method

This method we can use in floor slabs. Use in a small pond on the floor to keep the floor moist.

4.1.2 Wet coating

This method is suitable for concrete structures; Use this method especially for columns, baseboards and bottom surfaces of floors. And we use it to cover the concrete to keep it moist.

4.1.3. Watering

Watering is a simple but effective concrete maintenance method. The principle of this method is to maintain moisture on the concrete surface so that the hydration process of cement continues. Watering needs to be done continuously for a period of 3 to 7 days, depending on weather conditions and technical requirements of the project. To ensure effectiveness, it is necessary to use watering equipment that can distribute evenly and does not cause erosion of the concrete surface.

4.1.4. Use plastic film or wet cloth

 Applying plastic film or wet cloth to the concrete surface is another effective curing method. Plastic film has good moisture retention properties and protects concrete from rapid evaporation due to heat or wind. Wet fabric, usually canvas or geotextile, has the same effect. It is necessary to ensure that the coating is completely sealed and does not move during curing.

4.2. Use chemicals for maintenance

4.2.1. Concrete curing agent

Concrete conditioners are chemical products that are sprayed onto the concrete surface after the concrete has partially hardened. These substances create a thin film on the concrete surface, helping to reduce water evaporation and prevent the appearance of cracks. Maintenance agents usually come in two main forms: film-forming agents and water-absorbing agents. Choosing the right chemical depends on the environmental conditions and technical requirements of the project.

4.2.2. Benefits and applications

 Using curing chemicals not only helps maintain concrete moisture but also improves concrete surface quality, reduces crack development and improves waterproofing. These products are typically applied immediately after the concrete begins to reach the required hardness, helping to ensure effective and uniform hydration.

4.3. Measures to improve the environment

4.3.1. Keep the right temperature

Temperature is an important factor affecting the hydration of concrete. In cold weather, concrete can harden too quickly, leading to the formation of cracks and loss of strength. To overcome this, measures such as heaters, insulation panels, or thermal heating systems can be used to maintain the ambient temperature around the concrete between 10 and 30 degrees Celsius. In hot weather conditions , cooling measures such as water spraying or using sun screens are needed to reduce the temperature of the concrete surface.

4.3.2. Avoid direct sunlight

Direct sunlight can cause concrete to dry too quickly, leading to the risk of cracking and loss of strength. To protect concrete from sunlight, shielding materials such as tarpaulins, sun screens, or heat-reflective materials can be used. Covering also helps reduce the risk of being affected by other weather factors such as strong winds or rain.

5. Factors affecting concrete curing

- Weather conditions

Weather has a great influence on the curing process of concrete. Hot sun and strong winds can cause concrete to dry too quickly, while rain or high humidity can cause other problems. To cope with adverse weather conditions, flexible maintenance plans and appropriate protective measures are needed.

- Cement type and concrete composition

 The type of cement and the composition of the concrete mix also affect the curing process. Some types of cement and admixtures may require special curing methods to achieve optimal performance. Choosing the right concrete ingredients and applying the corresponding curing methods is very important.

6. Conclude

Concrete maintenance is an essential element in the construction process. Curing methods such as moist curing, using curing chemicals and improving environmental conditions play an important role in ensuring that concrete achieves optimal quality and durability. To achieve best results, curing measures should be implemented immediately after the concrete is placed and maintained for as long as necessary, and curing methods should be adjusted based on environmental conditions and requirements. project engineering.

By understanding and properly applying concrete curing methods, contractors and construction engineers can ensure that concrete structures not only meet technical requirements but also have a long lifespan, contributing to contribute to the sustainability of construction projects.

7. Introducing a reputable design & construction consulting service provider

The importance of construction units is undeniable because their reputation will ensure the quality and aesthetics of your project. Today, there are many units providing construction design services to meet the increasing construction demand in our country. Therefore, finding a reputable unit is not easy and requires you to spend time researching. During the selection process, you need to research carefully and ensure that the accompanying unit must have high professional qualifications, many years of experience, have a clearly signed contract, transparent costs,... To helps customers save time searching, Công ty TNHH Đầu tư Xây dựng Hưng Nghiệp Phú confident that it will be the best choice for you.

Hung Nghiep Phu Construction Investment Co., Ltd. with the mission of bringing the best solutions and services, building a prosperous community with customers, Hung Nghiep Phu is gradually asserting its brand through cooperation. Sincere cooperation, with a leadership team with ethical capacity, creativity, dedication to the profession and strategic vision. Hung Nghiep Phu owns a team of skilled and highly qualified staff who will bring customers the best quality projects. 

Hung Nghiep Phu Construction Investment Company Limited - specializes in constructing civil and industrial projects. We look forward to accompanying customers in construction projects as well as legal procedures such as planning diagrams, applying for construction permits, completing processes, and applying for fire prevention and fighting certificates,... If you have any questions or are in need of designing or completing the process, please contact us immediately for a free consultation!

>>> See more:

• BÍ QUYẾT CHỌN MÀU SƠN CHUẨN PHONG THỦY VỪA ĐẸP VỪA MAY MẮN

• SO SÁNH MÁI BÊ TÔNG CỐT THÉP VÀ MÁI VÌ KÈO LỢP NGÓI
• CÁCH ĐẢM BẢO TIẾT KIỆM CHI PHI CHO NGƯỜI MỚI XÂY DỰNG NHÀ LẦN Khởi
• TƯ VẤN CHỐNG NÓNG CHO NHÀ HƯỚNG TÂY

_____________________

THÔNG TIN LIÊN HỆ:

 Facebook: Công ty TNHH Đầu tư Xây dựng Hưng Nghiệp Phú (興業富) 

 Hotline: 1800.3368 (Miễn phí)

 Trang web: xaydunghunnghiepphu.com

 Gmail: kinhdoanh01@xaydunghungnghiepphu.com

 Địa chỉ: Số 2034D, tổ 22, KP. Phước Thái, P. Thái Hòa, TP. Tân Uyên, Tỉnh Bình Dương

------

Nguồn:  Sưu tầm Internet