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  • Sulfate adjustment for cement with triisopropanolamine: Mechanism of early strength enhancement
    This paper investigated the impacts of sulfate adjustment on strength, hydration and the microstructure of cement with triisopropanolamine (TIPA) to propose the mechanism of early strength enhancement from the microscopic point of view.
    2019-03-20
  • Influencing Factors of Concrete Slump Loss
    Rapid loss of concrete slump is a common phenomenon in concrete construction, which directly affects the operation and construction process of concrete pouring. There are many kinds of factors leading to excessive loss of concrete slump. Correct analysis of factors affecting excessive loss of concrete slump is of great significance to improve the efficiency of concrete construction and improve the durability of concrete.
    2019-03-20
  • Progress and development prospects of polycarboxylate superplasticizer polyether macromonomer
    With the development of concrete technology, the requirements for polycarboxylate superplasticizers are more refined, not limited to the basic performance advantages such as water reduction rate and moisture retention. Since the polymerization of polycarboxylate superplasticizer is designable, polycarboxylate water reducing agent with special functions can be prepared according to specific engineering requirements, such as slow release type, early strength type, anti-shrinkage type and low bleed type. , low viscosity type, etc. The main steric hindrance group of the polycarboxylate superplasticizer is the longer polyoxyethylene side chain. The nature of the water-soluble nonionic polyoxyethylene soft segment allows its conformation in aqueous solution to vary. The conformational state of the side chain has a great influence on the water reducing agent.
    2019-03-18
  • Influencing factors of concrete slump retention - Mineral Admixtures And Aggregate
    Choose the right concrete admixtures can improve the concrete workability and durability. Shijiazhuang City Horizon Chemical Industry Co., Ltd. can provide concrete polycarboxylate superplasticizer and other additives used together with the concrete water reducer, like concrete retarder, defoamer, and accelerator, etc.
    2019-03-18
  • Classification of concrete admixtures and its principle of action
    Due to the extensive use of industrial by-products and waste materials in the cement production process, the adaptability of admixtures has become increasingly prominent. This requires the development of different types of admixtures for different gelling materials. For example, polycarboxylic acid admixtures, according to market demand, will develop varieties that meet various requirements by changing the branching method, and facilitate engineering use and quality control. Admixtures for the development of high-strength, anti-aging At present, the strength of concrete is continuously increasing, and admixtures play a significant role in improving the performance of concrete. In the future, it is necessary to continuously develop admixtures for high-strength ultra-high-strength concrete.
    2019-03-15
  • Factors Affecting Slump Loss of Concrete- Admixtures
    Shijiazhuang City Horizon Chemical Industry Co., Ltd. provide cement and concrete additive materials, like cement grinding additive Triisopropanolamine and Diethanolisopropanolamine, also the concrete water reducer-polycarboxylate superplasticizer to improve the cement quality and concrete slump retention, which can better meet the projects requirement.
    2019-03-15
  • Comparative analysis of the effects of three alcohol amine cement grinding aids
    Conclusion: (1) Triethanolamine, triisopropanolamine and diethanol monoisopropanolamine are all good cement grinding aids, which have good grinding effect. (2) Triethanolamine has excellent early strength improvement, but can not even weaken the late strength of cement; triisopropanolamine can not promote the early strength of cement, but can improve the characteristics of late strength; diethanol monoisopropanolamine It has the advantages of both, and has obvious improvement on early strength and late strength. (3) Due to the prevalence of chloride salt early strength agents and triisopropanolamine compared with triethanolamine, there are many advantages in terms of dispersibility, age enhancement, application conditions and relative costs, so the application is gradually increasing. , an increasingly widespread replacement of triethanolamine.
    2019-03-14
  • What is a concrete admixture
    Concrete additive is an admixture added during concrete mixing. It is mainly used to improve the performance of concrete. From the point of addition ratio of admixture, it is generally not more than 5%. Although it contains a small amount, it has played an active role in improving the performance of concrete and has become an indispensable part of the current development of concrete. The additives used in concrete mainly refer to different types of water reducing agents. The extensive promotion of concrete admixtures has led to significant improvements in the strength of the concrete, its brittleness and its own weight, and has improved the applicability of concrete construction. For example, adding antifreeze to concrete can make concrete construction work in the cold winter. The use of superplasticizers enables the renewal of concrete placement and flow regimes.
    2019-03-13
  • Factors Affecting Slump Loss of Concrete-Cement
    Factors Affecting Slump Loss of Concrete-Cement The mineral composition and mineral morphology of cement clinker directly affect the hydration and hardening process of cement and the adsorption of additives, so it has a great influence on the construction performance of concrete. Gypsum in cement components also has a great impact on the slump of concrete. In order to improve the label of cement, cement manufacturers will add appropriate grinding aids to improve the specific surface area of cement which will increase the void ratio of the accumulated weight of cement particles, increase the water demand, and accelerate the hydration reaction of cement, increase the slump loss and poor construction performance.
    2019-03-13
  • Nguyên lý phản ứng tiếp theo là máy nghiền xi măng
    Chất trợ nghiền xi măng là một chất phụ gia hóa học giúp cải thiện hiệu quả và hiệu suất mài của xi măng. Nó có thể làm tăng đáng kể sản lượng của nền xi măng, cường độ của xi măng ở các độ tuổi khác nhau và cải thiện tính lưu động của nó. Chất trợ nghiền xi măng có thể làm giảm đáng kể hiện tượng hình thành bóng hấp phụ tĩnh điện được hình thành trong quá trình nghiền, và có thể làm giảm xu hướng tái kết tụ của các hạt siêu mịn hình thành trong quá trình nghiền. Chất trợ nghiền xi măng cũng có thể cải thiện đáng kể tính lưu động của xi măng, cải thiện hiệu quả nghiền của máy nghiền và hiệu quả lựa chọn bột của máy phân loại, do đó làm giảm mức tiêu thụ năng lượng của máy nghiền. Xi măng được sản xuất bởi chất trợ nghiền có xu hướng nén và kết tụ thấp hơn, có lợi cho việc tải và dỡ xi măng và có thể làm giảm hiện tượng treo tường của kho xi măng.
    2019-03-12
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