This study aimed to expand the knowledge on the application of the most common industrial byproduct, i.e., fly ash, as a supplementary cementitious material. The characteristics of cement-based composites containing fly ash as supplementary cementitious material were discussed. This research evaluated the mechanical, durability, and microstructural properties of FA-based concrete. Additionally, the various factors affecting the aforementioned properties are discussed, as well as the limitations associated with the use of FA in concrete. The addition of fly ash as supplementary cementitious material has a favorable impact on the material characteristics along with the environmental benefits; however, there is an optimum level of its inclusion (up to 20%) beyond which FA has a deleterious influence on the composite’s performance. The evaluation of the literature identified potential solutions to the constraints and directed future research toward the application of FA in higher amounts. The delayed early strength development is one of the key downsides of FA use in cementitious composites. This can be overcome by chemical activation (alkali/sulphate) and the addition of nanomaterials, allowing for high-volume use of FA. By utilizing FA as an SCM, sustainable development may promote by lowering CO2 emissions, conserving natural resources, managing waste effectively, reducing environmental pollution, and low hydration heat.
Prefabricated building construction has strong environmental protection characteristics and also shows high application advantages in terms of construction cost and construction efficiency. It plays a good role in promoting the construction technology level. However, in the process of prefabricated building construction, there still exists some inevitable quality defects, which have a large impact on the overall quality of the construction project. It is not conducive to the scientific development of the construction industry. Therefore, effective measures must be taken for the prefabricated assembly. The quality problems in building construction are prevented, so that the quality of building construction is effectively guaranteed. This paper analyzes the common quality problems in prefabricated building construction and puts forward some specific measures according to the actual situation, hoping to provide an effective reference for the prevention of common quality problems in prefabricated building construction.
In recent years, the process of urbanization construction in China has been accelerating, the number of construction projects has been increasing and the scale of construction has been continuously expanding. While promoting China’s economic and social development, there have also been some problems. In view of this, the application of advanced technologies in the construction field is becoming more and more. Among them, BIM technology is the commonly used technical means in construction. The construction personnel applied BIM technology to the process of assembly structure design, which further improved the overall quality of the design and improved work efficiency. Based on the above situation, this paper conducts relevant research on the assembly structure design based on BIM technology, hoping to provide valuable reference to relevant personnel and lay a good foundation for the construction and development of China’s construction engineering.
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