同样是石膏粉，普通建筑石膏一袋几十块，高强石膏可能要翻两三倍。贵在哪里？值不值得多花钱？看完这篇你就有答案了。

Similarly, for gypsum powder, a bag of ordinary building gypsum contains dozens of pieces, while high-strength gypsum may need to be doubled or tripled. Where is it expensive? Is it worth spending more money? After reading this article, you will have the answer.

两者的本质区别：晶体结构不同。 普通建筑石膏是β型半水石膏，高强石膏是α型半水石膏。虽然化学成分一样，但晶体形态不同——α型晶体更完整、更致密，因此物理性能优于β型。

The essential difference between the two is their different crystal structures. Ordinary building gypsum is beta type hemihydrate gypsum, while high-strength gypsum is alpha type hemihydrate gypsum. Although the chemical composition is the same, the crystal morphology is different - α - type crystals are more complete and dense, so their physical properties far exceed those of β - type crystals.

强度的差距有多大？ 建筑石膏的物理强度较低。而高强石膏的物理强度一般为普通石膏粉的3倍以上。具体来说，高强石膏的干燥抗压强度可达25-40MPa。2小时抗折强度5-8MPa，抗压强度15-25MPa；恒重时抗折强度7-13MPa，抗压强度25-45MPa。

What is the difference in intensity? The physical strength of building gypsum is relatively low. The physical strength of high-strength gypsum is generally more than three times that of ordinary gypsum powder. Specifically, the dry compressive strength of high-strength gypsum can reach 25-40MPa. 2-hour flexural strength 5-8MPa, compressive strength 15-25MPa; The flexural strength at constant weight is 7-13MPa, and the compressive strength is 25-45MPa.

用途的差别：

Differences in usage:

建筑石膏：主要用于纸面石膏板、石膏砌块、普通装饰材料。用量大、要求不高、性价比优先。

Architectural gypsum: mainly used for paper faced gypsum boards, gypsum blocks, and ordinary decorative materials. Large usage, low requirements, cost-effectiveness priority.

高强石膏：用于石膏基自流平砂浆、防火门芯板、陶瓷模具等对强度有高要求的场景。还能替代建筑石膏用于更高标准的工程。

High strength gypsum: used in gypsum based self leveling mortar, fireproof door core board, ceramic molds and other scenarios that require high strength. It can also replace building gypsum for higher standard projects.

值不值得多花钱？ 看场景。普通墙面抹灰、嵌缝修补，建筑石膏完全够用，没必要多花钱。做自流平地面、防火门芯板、精密模具，建议用高强石膏，普通石膏强度不够会出问题。陶瓷模具要求干燥抗压强度25-40MPa，只有高强石膏能达到。

Is it worth spending more money? Look at the scene. Ordinary wall plastering, joint repair, and building gypsum are completely sufficient, there is no need to spend extra money. To make self leveling flooring, fireproof door core panels, and precision molds, high-strength gypsum must be used. Insufficient strength of ordinary gypsum can cause problems. Ceramic molds require a dry compressive strength of 25-40MPa, which can only be achieved by high-strength gypsum.

高强石膏的其他优势：生产成本仅比普通石膏高30%左右。孔隙率更低、耐久性更好。对于要求高的工程，多花的钱绝对值得。

Other advantages of high-strength gypsum: The production cost is only about 30% higher than that of ordinary gypsum. Lower porosity and better durability. For projects with high requirements, the extra money is definitely worth it.

本文由济南石膏粉友情奉献.更多有关的知识请点击:https://www.jnfhjc.com真诚的态度.为您提供为多维度的服务.更多有关的知识我们将会陆续向大家奉献.敬请期待.

This article is a friendly contribution from Jinan gypsum powder For more information, please click: https://www.jnfhjc.com Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Coming soon.