Concrete is a necessary product in the construction field. It will accelerate the damage under the erosion of carbon dioxide, water, chloride ion, sulfate and other media. In order to prolong the service life, potassium hydroxide will be added into the concrete. So why is that? Here's the answer:

1、混凝土的干縮性能。摻有本品的混凝土，在室溫下養護時，前二個月的收縮要略大些，三個月以后則摻劑混凝土的收縮要比未加的小些。

1. Dry shrinkage of concrete. When the concrete mixed with this product is cured at room temperature, the shrinkage of the first two months is slightly larger, and the shrinkage of the concrete mixed with agent after three months is smaller than that of the concrete not added.

2、抗凍融性。摻有氫氧化鉀的混凝土，其容重比未加時要大，說明其密實性好，因而抗凍融性能要好。

2. Freeze thaw resistance. The volume weight of concrete mixed with potassium hydroxide is larger than that when it is not added, which indicates that it has good compactness and therefore has better freeze-thaw resistance.

3、抗摻性能。有該產品的混凝土，它的抗滲標號比未加劑混凝上的抗滲標號要高。

3、 Anti Doping performance. For concrete with this product, its impermeability grade is higher than that of concrete without admixture.

4、混凝土的徐變。摻加產品的混凝土的徐變度，比不加劑混凝土的要小，徐變系數也小，故用于預應力混戰土時，仍可保留必要的性能。

4. Creep of concrete. The creep degree of the concrete mixed with the product is smaller than that of the concrete without the agent, and the creep coefficient is also smaller. Therefore, when it is used in the prestressed mixed soil, the necessary properties can still be retained.

5、其它性能，對加入氫氧化鉀的混凝土的碳化及銹蝕等方面均有過試驗報導。一般，在正常使用下，均未發現有不良的影響。

5. Other properties, such as carbonation and corrosion of concrete added with potassium hydroxide, have been reported. Generally, under normal use, no adverse effects were found.

以上就是氫氧化鉀對于混凝土物理性能的幾大影響，混凝土中加入氫氧化鉀增強了使用強度，以達到經濟適用的目的。那么，在這里小編也要提醒大家在添加時要適量，不可過多或過少。

The above is the impact of potassium hydroxide on the physical properties of concrete. The addition of potassium hydroxide in concrete enhances the service strength, so as to achieve the purpose of economic applicability. In this case, the editor should also remind you to add the right amount, not too much or too little.