The aggregates in the mortar are inert materials not involved in the chemical reaction, and play the role of framework or padding. Aggregates can be used to adjust the density of mortar and control the shrinkage performance of materials. The particle diameter of fine aggregate used in the mortar is generally less than 5mm, so.. read more →
Masonry cement is characterized by the high admixture content, low cement strength and low cement cost. Since the strength grade of mortar is generally low, using ordinary Portland cement or other varieties of Portland cement often results in higher strength of mortar, a greater waste of cement, and poor water retention of mortar. Using masonry.. read more →
The addition of lime into the cement mortar can improve the workability and construction performance, improve the bonding strength, reduce cracking and compensate for micro-cracks. When the dosage of lime paste is small, it has little effect on the strength of mortar, but when the dosage of lime paste is great, it will significantly reduce.. read more →
Building gypsum has the following properties: Fast setting and hardening Building gypsum has fast setting and hardening speed. Usually, it achieves the initial setting within a few minutes at room temperature after mixing with water, and reaches the final setting within 30min. The setting time can be adjusted by adding retarders or coagulants. .. read more →
In the construction work, lime is mainly used for masonry wall or plastering work. The lime paste is used as a water-retaining thickening material, with such advantages as good water retention and low price, effectively avoiding the poor adhesion between the mortar and the substrate or the block material resulting from the water absorption of.. read more →
At present, the more widely used water-reducing agents are lignin-basedwater-reducing agents naphthalene-based superplasticizers, melamine-based superplasticizers and polycarboxylate-based superplasticizers. And their characteristics are as follows: Lignin-basedWater-reducing Agents Lignin-basedwater-reducing agents have lignin sulfonates as the major components, including calcium lignosulphonate, sodium lignosulphonate and magnesiumlignosulphonate, and are ordinary water-reducing agents. They do not have high water-reducing rate, and.. read more →
Water retention is an important property of cellulose ether. The factors affecting the water retention effects of dry-mixed mortar include the addition amount, viscosity, fineness, the temperature of use environment of mortar. Effects of the Addition Amount of Cellulose Ether on Water Retention When the addition amount of cellulose ether is within the range.. read more →
The cellulose ether and cellulose derivative are a large category of additives, usually powdery (or granular), and a few slurry (the suspensions formed when cellulose esters do not dissolve). Despite the competition against synthetic rheological modifiers, the cellulose derivative is still the main force of “thickening agents”, and mainly used for the production of various.. read more →
According to the ionization performance of substituents, cellulose ethers can also be divided into ionic and non-ionic types. The ionic type mainly includes carboxymethyl cellulose salt (CMC), while the non-ionic type includes methyl cellulose, methyl hydroxyethyl cellulose ether (MHEC), methyl hydroxypropyl cellulose ether (MHPC), and hydroxyethyl cellulose ether. Since the ionic cellulose (carboxymethyl cellulose salt).. read more →
Cellulose ether is the powdered cellulose ether generated with wood fiber or refined short cotton fiber as the main raw materials, after chemical treatment and by the reaction of etherifying agents such as chlorinated ethylene, chlorinated propylene and oxidized ethylene. The production process of cellulose ether is complex. It starts with the extraction of cellulose.. read more →