Stool color is generally influenced by what you eat as well as by the amount of bile â a yellow-green fluid that digests fats â in your stool. As bile pigments travel through your gastrointestinal tract, they are chemically altered by enzymes â changing the pigments from green to brown.
Fill the Cracks. Patch all cracks, crevices, and holes in the old concrete surface. For hairline cracks up to 1/8 inch wide, mix four parts of Ardex Concrete Dressing to one part water. Force the thick paste into the cracks with a putty knife. For larger cracks up to 1/2 inch wide, use concrete-repair caulk. Squeeze the caulk into the cracks with a caulking gun, and smooth it with a putty knife.
Concrete is a tough surface, but because it is porous, it's easily stained. Most spots are easy to clean if you know the steps. Here are a few things you can use to renew your patio, driveway or front porch. The most common stains are caused by oil or grease. The first step in removing an oil stain is to use mineral-spirits-based paint thinner to dissolve and break up the oil. Use a scrub brush to work the thinner into the stain.