2014年7月18日 · A coring saw doesn't use percussion to vibrate the hell out of things and maybe compromise the integrity of the surrounding aggregate. If I were doing this as a contractor and had some liability in the matter I would absolutely core it.:yes: The more I think about this...

2024年8月12日 · Here's what I was thinking pea gravel 2" around post then pour 2 bags concrete. I did this on a few posts then noticed after a rain storm the water just pooling and sitting on the top of the concrete. I was originally just going to top the holes off with aggregate but now I don't know. The soil is clay here.

2012年2月21日 · My husband chose stained exposed aggregate. They came in with one truck poured half the patio, sprayed the chemical, brushed and washed. Next truck, same thing. One side looks like regular concrete will small patches of exposed, the other looks like exposed aggregate should but feels bumpy not rough to walk on (uncomfortable).

2018年7月27日 · We had a new driveway and walkway poured 7 days ago. It is exposed aggregate that looked OK wet when first washed to expose the small rocks. As it dries/cures, however, the surface appears splotchy as if the washing was not consistent or complete. It looks as though the small rocks were exposed more in some sections and less in others.

2024年3月15日 · And if you mean the existing "aggregate" is exposed aggregate finish, I would put an expansion joint if aesthetics were important (if seen) between the two finishes. Also, not much info, but stair stringers should not rest on a concrete pad, they mount to the railing posts which should have footings.

2012年4月18日 · A general rule of thumb is that higher strength mixes have more durability for the same slump and with the same aggregate. Also absorption is lower. If you have a freezing climate, the best thing you can do is to use air-entrained concrete (5%) to …

2022年2月2日 · A garden wall doesn't need the gravel backfill and drainage. But a plastic liner behind it will keep you from having to hose it down a couple times a season and a powerwash maybe once a year to keep the blocks looking fresh.

2022年9月13日 · In the aggregate industry, gravel is a natural product created by natural forces. Crushed stone, of course, is produced by mechanical rock crushing equipment. I'm told that crushed stone is a better option because the squared edges create more gaps and the rounded edges of natural gravel creates smaller gaps.

2010年7月7日 · Grout is a high slump material. Concrete is 3"-4" slump and grout specifications require an 8"-1" slump, so it is much wetter and the maximum aggregate size is less. The materials in grout are sand and small rock, usually about 3/8" (depending on …

2022年7月3日 · rotary hammer drill is much more expensive, but can handle drilling concrete more easily, especially aggregate, which may have rocks embedded in it. 3. There is also a special class of rotary hammers called SDS, which are …