Precautions for Self-Leveling Cement Construction in Winter
In winter, temperatures in northern regions are low, which raises the question of whether cement self-leveling can be applied and within what temperature range such application is permissible. These factors significantly affect the execution of cement self-leveling work. During installation, the material is typically mixed on-site with clean water according to the manufacturer’s instructions and then applied. However, when the ambient temperature drops to freezing, the water added during mixing will freeze, making it impossible to proceed with the cement self-leveling work.
17
2020
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04
The Role of Polycarboxylate Superplasticizers in Mortar and Concrete
Water-reducing agents primarily enhance the strength of mortar; they are admixtures that reduce water content and improve strength without compromising the workability of mortar and concrete during placement. Polycarboxylate superplasticizers are a new generation of high-performance water reducers developed in recent years, characterized by outstanding water-reducing efficiency, flowability, and penetrability. They significantly increase the strength of cement mortars; however, their production process is complex, and their cost is slightly higher than that of other water-reducing agents.
13
2020
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04
The aggregate used in thick-layer self-leveling screeds is fine aggregate with a particle size range of approximately 40–120 mesh. Experimental results demonstrate that such fine aggregate exhibits excellent flowability and strong particle suspension, which effectively enhances the flow characteristics and mechanical strength of the self-leveling material. With the development of industrial production, the volume of industrial waste has grown substantially, encompassing a wide variety of types and complex compositions, making its treatment particularly challenging.
10
2020
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04
Performance Advantages of Permeable Concrete Pavements
Pervious concrete pavement is a type of surface paving whose internal structure consists of a skeletal framework of interconnected pores that are in communication with the external atmosphere, while simultaneously meeting the strength and durability requirements for road and paving applications.
06
2020
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04
Comprehensive Utilization of Desulfurization Gypsum
Desulfurization gypsum is a byproduct of wet flue-gas desulfurization in coal-fired power plants and is primarily generated at these facilities. With the application and promotion of comprehensive utilization technologies for desulfurization gypsum, perceptions of this material have shifted: what was once regarded as a waste discharge from power plants is now seen as a valuable resource, thereby attracting greater interest from stakeholders.
03
2020
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04
The Necessity of Applying Permeable Pavement Materials
The permeable concrete binder produced by Shandong Xindadi Group, as a key constituent of permeable concrete, imparts high load-bearing capacity, excellent permeability, superior freeze–thaw resistance, ecological and environmental friendliness, structural stability, and effective suppression of soil and water loss.
30
2020
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03