③ Pasting method
Lay according to the laying position and horizontal position. Use a serrated trowel to evenly scrape the slurry onto the bonding surface of the base layer or natural stone, then press the stone slab onto the base layer, gently tap, adjust the level, and compact it with a rubber hammer; Alternatively, the mixed slurry can be directly applied to the bonding surface of natural stone using the conventional pasting method, and then forcefully pressed onto the surface of the base layer, straightened, and excess slurry scraped off. When the thickness of the bonding layer is about 5mm, the amount of adhesive used per square meter is about 8kg.
● Construction process flow and operation points
Leave a seam
Reasonably set the joints according to the specifications and sizes of the stone slab. If the length of natural stone is ≤ 60cm, a joint of no less than 1mm should be set up; If the length is greater than 60cm, a joint of no less than 1.5mm should be set.
Joint filling construction
① The joint filling construction should be carried out at least 7 days after the pasting is completed. Before filling the joint, various impurities such as grease, floating dust, loose materials, etc. that are not conducive to joint filling and affect bonding should be removed from the joint; Steel plates and other metal substrates belong to unstable walls, and flexible sealant or elastic silicone adhesive must be used for joint filling treatment.
② No need to polish the wall: After opening the packaging of AD-1027 flexible sealant, put it into a silicone gun and slowly squeeze it into the joint. The filling depth should not be less than 3mm. Fill the surface of the joint flat and let it naturally cure for 1 day. After the sealant is completely cured, it can be filled with a depth of 3mm and a width of 3mm, with a dosage of about 20g/m.
③ Need to polish the wall: Mix AD-1026 flexible sealant, insert the sealant into the gap with a shovel or batch plate, and the filling depth should not be less than 3mm. Fill the gap surface flat and cure it under natural conditions for 2-3 days. After the sealant is completely cured, the stone slab can be polished and polished. The filling depth is 3mm and the width is 3mm, and each kilogram of sealant can fill about 60m long gaps.
④ After the sealing agent packaging is opened, it should be used up within the specified time. The slurry stuck around the joint of the stone slab can be cleaned with a shovel after it has just dried to keep the surface of the joint flat.
● Materials and equipment
Waterproof interface agent, stone waterproof back adhesive, stone waterproof back adhesive (special for back mesh), two-component flexible adhesive, flexible joint filler (two-component), flexible joint filler (wall type)
Mixing bucket, electric mixer, brush, drum, shovel, art knife, batch plate, rubber hammer, level, serrated trowel, etc.
● Construction quality control
① After the construction is completed, maintenance and finished product protection work should be done well. Within one week after the paving is completed, watering, knocking, and collision are prohibited;
② The adhesive and backing adhesive should be strictly mixed according to the prescribed ratio, evenly mixed, and no other materials or additives should be added during construction. The mixed adhesive and backing adhesive should be used up within 2 hours, and the ambient temperature at the construction site should be controlled at 5-35 ℃. After each construction, tools and equipment can be rinsed with clean water;
③ The alkalinity of materials such as stone waterproof adhesive, two-component flexible binder, and flexible sealant is lower than that of cement, and has a smaller impact on the skin. If it accidentally falls into the eyes, it can be rinsed with water;
④ The bonding surface of the stone slab should not be protected with protective agents before bonding, otherwise it may cause hollowing and falling off;
⑤ Before the adhesive layer is fully dried, it should be avoided from rain and direct sunlight to avoid affecting the performance of the adhesive film after formation. At the same time, sharp tools should also be avoided to damage the adhesive layer;
⑥ If there is a resin bonded back net on the bonding surface of the stone slab, it must be cleaned with a shovel or other tools before applying the back glue;
⑦ The bonding surface that has been coated with stone waterproof adhesive does not need to be protected again, only the other five surfaces need to be protected for bonding construction;
⑧ The coating thickness of the stone waterproof backing adhesive should be uniform and there should be no omissions or holes.