Winter construction of gas beautiful seam an agent of anti-freezing type grouting material filling - Yantai grouting material USES

Anti-freezing type grouting material anti-freezing type grouting material manufacturer antifreeze type grouting material price winter construction, the freeze-thaw damage often occurs, how to guarantee the construction is not affected by freeze-thaw damage? Due to freeze-thaw damage involving water freeze expansion, logically deduce, if too much water can quickly fled to filling pores in the nearby, anti-freezing type grouting material damage will not occur. This is the principle of bleed air. However, it should be stressed that, first of all should guarantee the wool stoma is smaller, otherwise can freeze water may cause more than the introduction of air bubbles can hold water. The demands can be converted into a water cement ratio is small enough, it may also guarantee the strength of the grouting material, thus better able to resist damage to frozen pressure. In order to resist freeze-thaw action, anti-freezing type water cement ratio of grouting material should not greater than zero. Kunming secondary grouting material 50; For the template, including side of bridge deck and bridge, the water cement ratio is less than 0. 45,. Or, strength of grouting material must achieve 34 mpa to teach in under the condition of freezing and thawing cycle. Grouting material in defined as appropriate and beautiful seam an agent to the anti-freezing type grouting material specially introduced in the air. The air should be and accidentally trapped air to distinguish clearly: the difference is that the size of the bubbles, the diameter of the general introduction of air bubbles in the 50 um sleeve grouting material around Shanghai, and accidentally trapped air to form larger bubbles, some like our familiar anti-freezing type grouting material surface pitting, Although the description not enough) So big. An air will be formed in the slurry dispersed, approximately spherical bubble, so as not to form water channel, also won't increase the permeability of grouting material. Due to the gel can only be formed in the water, so the pore will never fills with hydration products. So all the bleed air beautiful seam an agent are surface active beautiful seam an agent, both long-chain molecules oriented to reduce the surface tension of water molecules, molecular orientational towards the other end of the air. Therefore, formation of bubbles when mixing stability exist in, Bleed air beautiful seam an agent molecules repel each other, forming a layer of mulch on the bubble surface, which can drag shandong professional manufacturer of grouting material of bubble coalescence, guarantee the air-entraining air evenly distributed. Air-entraining beautiful seam an agent is usually the formation of solution directly join the blender, add timing is very important, can ensure the uniform distribution of bubbles and fully mixing. If at the same time also with other plus beauty seam an agent, before joining mixer must ensure that its beauty and bleed air seam an agent is not in direct contact, react with each other because they can affect performance. Freeze-thaw damage of anti-freezing type grouting material construction has serious harm, put an end to freeze-thaw damage is very important.