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石膏在加氣磚生產中有哪些作用？

來源：http://www.wavc.cn 日期：2019-07-22 發布人：

　　令人驚訝的是，濟南石膏粉仍然具有這種功能，原來石膏在生產加氣磚的產氣過程中起到了調節作用。它是一種常用的膠結材料，石膏不僅作為氣體過程的調節劑，而且由于參與水熱合成反應可以提高產品的強度，減少收縮，提高抗凍性。石膏在加氣磚生產中主要有以下幾個方面:

　　Surprisingly, gypsum still has this function. The original gypsum played a regulating role in the production of aerated brick. It is a commonly used cementing material. Gypsum not only acts as a regulator of gas process, but also can improve the strength, shrinkage and frost resistance of products by participating in hydrothermal synthesis reaction. Gypsum in the production of aerated brick mainly has the following aspects:

　　首先，要參與鋁粉的氣體反應，當有石膏存在時，與鋁粉在水中形成氫氧化鋁反應形成硫酸鈣鋁酸鹽。因此,在一些加氣磚(如水泥-礦渣砂、水泥砂),當石膏在水泥消耗太多的鋁粉的反應,快速設置可能會由于缺乏抑制chalate水泥石膏,石膏應補充道。

　　Firstly, it is necessary to participate in the gas reaction of aluminium powder. When gypsum exists, it reacts with aluminium powder to form aluminium hydroxide in water to form calcium aluminate sulfate. Therefore, in some aerated bricks (such as cement-slag sand, cement sand), when gypsum consumes too much aluminium powder in cement, the rapid setting may be due to the lack of inhibition of Chalate cement gypsum, gypsum should be added.

　　其次，抑制石灰的消化，延長其消化時間，降低其終消化溫度。

　　Secondly, it restrains the digestion of lime, prolongs its digestion time and lowers its final digestion temperature.
濟南石膏粉

　　第三，可以抑制水石榴子石的生成，從而使游離的鋁離子進入CSH(I)中，其中部分轉化為鋁代托勃莫來石，而AI2O3本身也能促進CSH(I)向托勃莫來石轉化，阻止其向硬硅鈣石轉化，因而強度提高，收縮值降低。

　　Thirdly, the formation of hydrogarnet can be inhibited, so that free aluminium ions can enter CSH (I), some of which can be converted into aluminium-substituted tobermorite, while AI2O3 itself can also promote the transformation of CSH (I) to tobermorite and prevent its transformation to anhydrite, thus increasing its strength and decreasing its shrinkage value.

　　第四，提高坯體及制品的強度，改善收縮等性能。濟南石膏粉在靜停過程中的坯體內參與生成水化硫鋁酸鈣和C-S-H凝膠，使坯體強度提高。增強了坯體適應蒸壓時溫差應力和濕差應力的能力。在蒸壓過程中，石膏可以促進水熱反應的進行，使CSH(I)向托勃莫來石轉化。

　　Fourthly, the strength and shrinkage of green bodies and products should be improved. The gypsum participates in the formation of hydrated calcium sulphoaluminate and C-S-H gel during the static shutdown process, so as to increase the strength of the green body. It enhances the ability of green body to adapt to temperature and humidity differential stresses during autoclaving. In the autoclave process, gypsum can promote hydrothermal reaction and make CSH (I) transform to tobermorite.

　　讀了上面的敘述你是不明白了，石膏的作用確實很大，用途也很廣。如果您有濟南石膏粉的需求可以點擊官網進行咨詢：http://www.wavc.cn/

　　Read the above narrative, you do not understand, the role of gypsum is really great, the use of a wide range. If you need Jinan gypsum powder, you can click on the official website to consult: http://www.wavc.cn/

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