Making concrete requires a precise mix of cementitious materials, aggregates of various sizes, water, mineral additives, and specific chemical admixtures. This complex process involves determining the right proportions, mixing, compacting, and molding, finally allowing the concrete to harden into a solid stone-like structure. In actual production and construction, the concrete ratio is crucial. By accurately determining […]
Dry-mixed mortar is a new type of building material combined with cement, fine aggregate, fly ash and other mineral admixtures and water-retaining and thickening materials, which has the advantages of stable quality, variety, and ease of construction, and it replaces the traditional mortar with its excellent performance. Raw materials are the main factors affecting the […]
1 The difference between dry mortar and traditional mortar One of the significant differences between dry mortar and conventional mortar is the use of small amounts of chemical additives for modification. If one additive is added to a dry mortar, this is referred to as primary modification; if two or more additives are added, this […]
1 On the setting time of concrete Initial setting: The initial setting time is required from the cement is mixed with water until the slurry begins to lose its plasticity. Final Setting Time: This is the time required for cement, after being mixed with water, to fully lose its plasticity and start to harden and […]
In construction, starch ethers and cellulose ethers are key additives that enhance the properties of mortars. Though they have distinct characteristics, using them together can significantly improve mortar performance. What Are Starch Ethers? starch ethers is a polysaccharide polymer compound composed of glucose, with two types of molecules, straight-chained and branched, known as straight-chained starch […]
Putty powder is a kind of building decoration materials, the main ingredients are talcum powder and glue. Just purchased the blank house surface of a layer of white is putty, usually putty whiteness in more than 90 fineness in more than 330. Putty is used to wall repair a substrate, for the next step in […]
I.Definition and classification of cellulose ether industry Cellulose ether, a polymer compound made by chemical reaction between cellulose and etherifying agent, plays a pivotal role in many fields, such as construction, coating, and medicine, due to its unique multifunctional properties. This multifunctional compound not only has the basic properties of thickening, suspending and stabilizing, but […]
Expansive cement can expand to a specific volume during the hydration process, while silicate cement often shrinks during the hardening process, causing cracks and water permeability in cement components. Thus, expanding cement overcomes the shortcomings mentioned above of silicate cement and improves the compactness and integrity of cement concrete components. When expansive cement is used […]
Hydroxypropyl methylcellulose (HPMC) is a nonionic cellulose alkyl hydroxyalkyl mixed ether obtained by alkalization, etherification, neutralization, and washing of cellulose. As a nonionic cellulose mixed ether with excellent performance, HPMC has good dispersing, emulsifying, thickening, bonding, water retention, and glue retention properties like other cellulose ethers such as CMC, MC, HEC, CMHEC, HEMC, and HBMC. […]
Any aluminate cement clinker, mainly composed of calcium aluminate, is ground into a hydraulic cementing material called aluminate cement, and its code name is CA. According to needs, an appropriate amount of αAl₂O₃ powder can be added when grinding cement with an Al₂O₃ content greater than 68%. Aluminate cement can be divided into four categories […]
