Roman Concrete - How They Did It
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Article by: Delmar Germyn This does not have much to do with casting concrete , Lawn Diseases Can Be Deadly in molds or forms, but it is interesting. I wondered just how long concrete , Tulip Divisions - Garden Tulips and Their Identities had been around after reading an article that claims that the pyramids are made of concrete , Waterlilies blocks. http://www.geopolymer.org/science_archaeology/pyramids_egypt/index.html - if you want to see it. It looked interesting so I looked up Roman concrete. , Spring Wedding Flowers They where known to be using concrete , How To Waterproof a Canvas and molds 2000 years ago. The cement part was the same as today. The difference was the way it was obtained. Modern cement is made from limestone in cement plants. , Coneflower or Echinacea - the Best Thing in Your Bed It is crushed and ground to a fine powder, and cooked at very high temperatures. , Coneflower or Echinacea - the Best Thing in Your Bed In Roman times they used volcanic ash (composed of silica and some aluminum and iron oxide) and lime. This was mixed with sand , Add Some Enchantment To Your Backyard With A Garden Gazebo in as dry a mix as possible on site and placed over layers of rock that had been pre set. Then they pounded the concrete , Cedar Benches: A Fine Choice for Your Garden mix into the rocks until the spaces between the rocks where filled with the mix. Then another layer of rocks, more concrete , Porch Swing Places: Where to Put a Porch Swing mix, etc. Until the thickness that was wanted was reached. It was a good system, the Pantheon is still there in Rome along with a lot of other buildings , Lawn Diseases Can Be Deadly made this way over 2000 years ago. Around 1980 or so this method was "rediscovered" and is often used now. With modern equipment such as mobile vibrators and vibratory rollers it is used to make Dams, airport runways, and in other places , The Guide to Cloudy Pool Water where strong concrete , Greenscapes: Energy Efficient Landscaping is needed. This is stronger than poured concrete , Butterfly House in the Flower Garden because there are less voids. Voids cause weakness. It is also cheaper because no rebar is used. some say it is environmentally , Garden Gazebo - A Stunning Addition to any Landscape friendly, -less steel, less water , Abatement and Congregation of Material and runoff, and less cement. In modern poured concrete , Spring Wedding Flowers the voids are compensated for with rebar. The romans did not have steel, and their concert didn't need it! Some of their buildings , Grow Herbs in your Garden for Pleasure and Profit used clay bricks in the concrete , Patio Enclosures and some had bronze where we would have rebar. This was not a common practice, but was used on roofs , Trends and Styles of Patio Furniture and arches. I wonder if some off our modern buildings , How To Keep Your Yard Ornamental With A Proper Sago Palm Care will be around in 2000 years? Probably not. The Pantheon will be 4000 years old then, but probably be starting to show its age. For more on this search for "roller compacted concrete". Here is a link to a dam in CA. http://www.cncpc.org/pages/media.html Those of you that live downstream from a dam may be particularly interested. copyright 2005 Delmar Germyn http://www.delsmolds.com  My web , Mowing the Lawn site is setup to help you and I learn more about molds and casting in general. YOU WILL FIND.... Articles on how to , Foraging In The Forest: Finding Materials That Link Your Home To The Great Outdoors mix your concrete, , How To Waterproof a Canvas hypertufa, etc for different uses. Free information , Trends and Styles of Patio Furniture on how to , Preformed Ponds Manufactured from New Rubber/Plastic Composite More Durable and Resistant to Wear make your own molds. Tips , Foraging In The Forest: Finding Materials That Link Your Home To The Great Outdoors and hints on their use and care. Free information , Preformed Ponds Manufactured from New Rubber/Plastic Composite More Durable and Resistant to Wear on making and using various types of molds to cast concrete, , Coneflower or Echinacea - the Best Thing in Your Bed plaster, cement, ceramics, and molding with hypertufa. Suggestions for projects that you can do in a couple of hours that will make your yard , Camellias / garden , A Couple of Good Places to Buy Lawnmowers look great. All the information , Organic Hydroponics - Simplified on the site is free to use and share. Click here to go to my site now. http://www.delsmolds.com I am hoping that when you see what I have (or have not) set out you will send in your tips , How to Build a Pond: Basic Considerations and stories. By sharing we can all learn from each other. We can also help newcomers to the hobby / business. The site will be constantly added to as time passes, so please click for updates |
  
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