Everyone pretty much answered your questions. Expansion joints allow for just that - expansion. Examples would be a garage floor against the driveway or a pole shed slab against the outside pad. As concrete heats it expands and would push against the another piece of concrete. Friend of mine had a house at the end of a street. No expansion joints between the street and driveway or driveway and garage floor. House was the walkout basement type. Eventually pushed on the back wall. $15,000 to reinforce the back wall and cut out the concrete to install expansion joints so it wouldn"t push on the house again. Yes, an expansion joint should go full depth of the concrete being poured. Concrete will crack. When it does the crack will more than likely go in a random fashion across the slab. Control joints are nothing more than creating a man-made weak area for the slab to crack at. Sometimes it won"t stop the crack, but it might eventually catch the crack to keep it from spreading entirely across the slab. An inch might be deep enough. Before saws everyone used a tool called a "jointer" to put roughly a 3/4 inch groove into the concrete. Curing the slab is extremely important. Keeping it moist will slow the curing process which actually helps slow hydration, which is the curing process of concrete. Burlap bags, lawn sprinklers, tarps, etc. can help keep it moist. The first few days is the most important, but a week or two would be beneficial. Hydration goes on for up to a year, but most of the strength is there after 30 days. Good luck.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
... [Read Article]
Latest Ad:
1945 Farmall wide body gas with pto and front plow. Runs good but needs new points.
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
