Cementitious building materials such as concrete, mortar, and masonry tend to readily absorb water because of their pore and capillary structure. To prevent damage due to moisture absorption, the material’s absorbency can be reduced by the application of a water repellent sealer. Silanes and siloxanes, the two most common types of water repellents, are both … Continue reading
Moisture can do irreparable damage to gypsum building materials. To prevent this and to protect the set gypsum mortar against moisture, powder-form water-repellent agents are admixed to the dry-mix mortar. This requires manufacturers of standard powder-form water repellents to employ carrier or encapsulation materials as a way of converting the liquid active ingredients into a … Continue reading
ANTI CRACK FIBER Anti crack fiber is a new type of fiber of concrete and mortar which is composed of polypropylene and polyester. It is called secondary reinforcement of concrete. With the development of composite materials, anti crack fiber has been widely used in civil engineering. The results show that when the crack resistant fiber … Continue reading
idmmc8, Nürnberg, 22. Mar. 21: Splendid Classic Car Location Secured In our last Newsletter, we announced the 8th International Drymix Mortar Conference idmmc8, taking place as real event in Nürnberg, Germany on 22. March 2021. We had issued a Call for Papers then (please send us those contributions, dear supporters!). In the meantime, we managed … Continue reading
Sidley Chemical will participate in the 2020 ChinaCoat Show Company: Sidley Chemical Co., Ltd. Business Nature: Manufacturer Country/Region: China Hall No.: 3.2 Zone No.: 8 Booth No.: 3.2H27 Sidley Chemical Co., Ltd. has been focusing on the application development and production of construction chemicals such as drymix mortar and coating additives and provide customers with cellulose ethers(HPMC/RDP/HEC/CMC), redispersible polymer … Continue reading
Currently the most widely used RDP are EVA and Veova. The technology is mature and the application effect is good. In recent years vinyl acetate acrylic acid system has emerged as the focus of foreign competitive research and development, but it has not been widely used due to its immature technology, but its excellent comprehensive … Continue reading
Characteristics of nature cellulose fiber (1)Fiber reinforcement and thickening effect The nature cellulose fiber has a three-dimensional network structure with obvious cross-linking effect, as shown in picture 4.4-2. This structure can effectively adhere to the liquid structure, such as water, latex paint, asphalt and other liquids with different consistency. Its thickening depends on the length … Continue reading
1). Application in tile adhesive Based on test formula as follows- A. Portland cement (p·O, 42.5R): 37% B. Sand gradation: 61.2% C. Hydroxy propyl methyl cellulase: 0.3% D. Redispersible polymer powder: 1.5% E. cellulose fiber: 0.3% Adding cellulose fiber into different formulas of tile adhesive can significantly reduce the slide distance. That is to say cellulose fiber in ceramic tile adhesive does not reduce the workability, … Continue reading
The function of the water reducing agent is to improve the working performance of freshly mixed mortar and the fluidity of the mortar without reducing the water consumption of the cement; while maintaining a certain working performance, reduce the amount of cement and increase the strength of the mortar, under the circumstances, reduce the amount of cement per … Continue reading
Water reducing agent refers to an additive that can reduce the amount of water used for mixing under the condition that the consistency of the mortar is basically the same. Water-reducing agents are generally surfactants, and are divided into ordinary water-reducing agents, high-efficiency water-reducing agents, early strength water-reducing agents, retarding water-reducing agents, retarding high-efficiency water-reducing … Continue reading