Concrete is the most widely used and largest building material in civil engineering. Design and manufacture concrete according to the predetermined performance, and develop a new variety of lightweight, high-strength and multi-functional concrete. The use of modern new technologies, the development of new processes and new equipment, and the extensive use of industrial waste as raw materials are all issues that need to be solved in the future.
The development direction of modern concrete - commercial concrete
Commodity concrete is provided with cast-in-place concrete to the construction site by means of centralized premixing and long-distance transportation. Commodity concrete is a high-tech building material that combines modern concrete with modern construction technology. It should include: large fluid concrete, fluid concrete, pumped concrete, self-compacting concrete, anti-seepage and crack-resistant mass concrete, high-strength concrete and high Performance concrete, etc. In order to make the commercial concrete performance stable, economical and cost-effective, it is necessary to strictly select the required raw materials and optimize the mix ratio of concrete. Practice has proved that the modern concrete mix ratio full calculation method provides a simple, fast and reliable technical approach.
Commodity concrete refers to concrete that supplies certain requirements to construction sites by means of concentrated mixing and long-distance transportation. It includes processes such as mixing, transporting, pumping and pouring of the mixture. Strictly speaking, commercial concrete refers to the concrete process and products, not the variety of concrete. It should include large fluid concrete, fluid concrete, pumping concrete, high strength concrete, mass concrete, anti-seepage cracking concrete or high performance. Concrete, etc. Therefore, commercial concrete is a combination of modern concrete and modern construction technology, and its popularity can represent the level of concrete construction and modernization of a country or region. Concentrated agitated commercial concrete is mainly used for cast-in-place concrete projects. It takes 1~2h, sometimes more than 2h, for concrete to be mixed and transported to watering.
Therefore, the reasonable supply radius of the commercial concrete mixing plant should be within 10 km. With the popularization and development of commercial concrete, cast-in-place concrete has become the future development direction. In many large cities in China, such as Beijing, Shanghai, Tianjin, Guangzhou, Shenzhen, etc., there are more than one hundred commercial concrete mixing stations, and their scale and technological level are no less than those of developed countries. Many small and medium-sized cities are also promoting the application of commercial concrete.
High Frequency Ranging Sensor Module
A high frequency ranging sensor module is a device that uses high-frequency signals to measure the distance between the sensor and an object. It typically consists of a transmitter and a receiver, which emit and receive high-frequency signals, respectively.
The module works by sending out a high-frequency signal, such as ultrasonic or radar waves, and measuring the time it takes for the signal to bounce back after hitting an object. By calculating the time of flight, the module can determine the distance between the sensor and the object.
High-frequency ranging sensor modules are commonly used in various applications, such as robotics, industrial automation, and automotive systems. They provide accurate distance measurements and can be used for obstacle detection, object tracking, or proximity sensing.
High-frequency laser distance sensors have a high measurement frequency and can provide real-time distance data, suitable for scenarios requiring quick responses, such as dynamic obstacle avoidance, autonomous driving, and robot navigation. These sensors ensure that the system can promptly perceive environmental changes and react quickly, ensuring safe and reliable operation.
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