Dongshi is a kind of porous Marine sedimentary rock.Due to pores appearing in the process of diagenesis,and because its main composition is calcium carbonate or magnesium carbonate,it is easy to be dissolved and corroded by water,there will be many natural irregular pores in these deposits.
The color of cave stones is mostly beige,which makes people feel mild,rich in texture and clear in stripes,which makes the decorated buildings often have strong cultural and historical charm,and are used on walls and floors by many buildings in the world.
Walls such as:Rome,Italy,most of the arena is a cave stone,although after 2000 years of wind and frost,but still magnificent;The bank of China headquarters building and the Chinese Embassy in the United States have a usable area of more than 20,000 square meters.
Also have the circumstance that applies at the ground of course,as a result of the existence of a lot of hole hole of hole stone,the bibulous rate of stone material rises,intensity drops,weatherability is poorer,because pore is more,can accumulate a lot of dust at the same time,clean hard.
So,how to deal with the cave stone,so as to avoid this problem?The following xiaobian to share with you.
1.Dry mill cleaning:
Dry grinding with marble 150 mesh grinding,remove the aging layer and oxidation layer on the stone surface,open the pores of the stone,ensure the effective penetration of the stone protective agent in the later period;
Coated with composite nano-siloxane protective agent to prevent water from entering the stone during the stone grinding process,causing stone lesions.During operation,it is required to keep the stone clean and dry.Pour the protective agent into a clean and dry bucket,dip the water applicator into the wet brush to ensure even and sufficient amount.If the general protective agent can stay on the stone surface for 20 to 30 minutes,it will be deemed as sufficient amount.After brushing the protective agent,48 hours under normal temperature,the temperature drops by 10 degrees,the health time is extended by 2-4 times;Also pay attention to brush along the seam with fluorin protective agent to prevent later cementation;
After the surface of the stone protective agent is dried,the dust-free sewing machine can be used to open the seams and repair the marble glue.
After the end of the protective agent regimen,grind and level the stone with 150 mesh of water;
150 mesh grinding end,ensure the stone surface clean and dry after pickling.
The operation is as follows:
Mix granite cleaning agent+granite water spot clean+water in a ratio of 1:1:1,and then pickling with a brush or hand brush for 2-3 times(pickling until the holes are cleaned),two and a half times each time.After waiting for 40 minutes for each cleaning,the liquid will be sucked up with a water suction machine.Note:This step must not be washed,otherwise the glue can not be filled;
According to party A's requirements,select the corresponding marble glue,and use the straight plate and sawtooth plate to supplement the glue,so as to ensure the air of the hole is emptied.After the glue is dried,it is ground again with 150 mesh until there is no glue remaining on the stone surface.
After 150 mesh grinding,step by step grinding to 3000 mesh;
According to the stone site to choose a waterproof or oil-resistant oily protective agent.Requirements and dry grinding stone after brushing protective agent,must follow clean,dry,sufficient,uniform,grade,health principles,health time for the protection agent can be dry construction;
Select marble polishing agent for polishing can be.
For example:JT-315 polishing twice,JT-318 polishing twice,JT-318+JT-308=3:1 polishing twice;It can also be polished 2 times with JT-315,2 times with JT-318,and 2 times with JT-317+JT-310A=1:1.