What is the role of the base treatment agent in waterproofing engineering?

Ensure that the waterproof material is tightly pasted with the base layer, expels air, and contributes to the waterproof effect.

There are three types of base treatment agents, you can carefully understand them, I hope it will be helpful to you. (1) If you use a water-emulsion waterproof coating.

It can be mixed with 02% 05% emulsifier.

aqueous solution or demineralized water.

The paint is diluted, and the dosage ratio is generally: waterproof coating emulsifier aqueous solution (or soft water) = 1 (05 1). If there is no soft water, cold boiled water can be used instead, and do not add general water (natural water or tap water).

2) If solvent-based waterproof coating is used, because its permeability is stronger than that of water-emulsion waterproof coating, it can be directly used for base treatment, such as solvent-based neoprene asphalt waterproof coating or solvent-based reclaimed rubber asphalt waterproof coating stuffy material. If the paint is thicker, it can be diluted with the corresponding solvent before use. (3) Polymer modified asphalt waterproof coating can also be used with asphalt solution (i.e., cold base oil.

as a base treatment agent, or in the field with kerosene.

No. 30 petroleum bitumen = 60 40 ratio of the prepared solvent as a base treatment agent. When the base treatment agent is painted, the brush should be applied vigorously and thinly to make the paint brush into the capillary pores on the surface of the base as much as possible, and a small amount of dust and other inorganic impurities that may be left by the base layer are mixed into the base treatment agent like a filler, so that it can be firmly combined with the base layer. In this way, even if the dust on the roof cannot be completely cleaned, it will not affect the strong bond between the coating and the base layer.

Especially when making solvent-based coatings on dry roofs, the waterproof coating is applied after using a base treatment agent, and the effect is quite obvious. After typing so many words, my hands are sore, do you think I said it well? If you're satisfied, give it a thumbs up!

1. Polymer modified asphalt waterproof coating can also use asphalt solution (i.e., cold base oil) as the base treatment agent.

2. Solvent-based waterproof coatings, because their permeability is stronger than that of water-emulsion waterproof coatings, can be directly treated with thin coatings, such as solvent-based neoprene asphalt waterproof coatings or solvent-based reclaimed rubber asphalt waterproof coatings. If the paint is thicker, it can be diluted with the corresponding solvent before use.

3. Water emulsion waterproof coating, the coating can be diluted with 02% 05% emulsifier aqueous solution or softened water, and the dosage ratio is generally: waterproof coating emulsifier aqueous solution (or soft water) = 1 (05 1).

Answers]: a, c, d, e

2021 Rudou 2020 2019 p58

4) The waterproof base treatment agent should be selected according to the type of anti-distribution water layer, the age and moisture content of the waterproof base concrete, and the requirements of the rubber file treatment agent before laying the waterproof layer according to the CJJ139-2010 table of the "Technical Regulations for Waterproof Engineering of Urban Bridge Decks".

Before the construction of waterproof materials, the performance of the base coating interface is improved, and the interface treatment agent makes the treated base surface produce higher bond strength, and overcome the shortcomings such as poor bonding, hollowing, and peeling that often occur.