国产热热热精品,亚洲视频久久】日韩,三级婷婷在线久久,99人妻精品视频,精品九热人人肉肉在线,AV东京热一区二区,91po在线视频观看,久久激情宗合,青青草黄色手机视频

Outside In

Who invented reinforced concrete?


(China Daily)
Updated: 2009-11-20 13:42

A: Joseph Monier, a gardener from France patented the invention in 1867 and exhibited the product at the Paris Exhibition the same year.

The commercial gardener created the reinforced concrete through trial and error after being frustrated with all the low-grade pots he used, which would easily fall apart because they were made of mud and clay.

He conceived that adding cement would make the pots sturdier, and put his idea into reality by inserting iron mesh into the pots. After some improvements, the result led to reinforced concrete, which drew much attention from constructors. The product is a necessity for all modern construction projects.

 

Voice
 

Copyright 1995 - 2010 . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
葵青区| 阿尔山市| 香河县| 柏乡县| 台中市| 河池市| 青岛市| 顺义区| 乐至县| 华安县| 合水县| 商河县| 类乌齐县| 昌乐县| 班玛县| 安丘市| 华池县| 文登市| 屏东县| 潜山县| 昂仁县| 盐城市| 清新县| 怀来县| 莒南县| 万山特区| 珲春市| 甘孜县| 积石山| 徐州市| 兖州市| 马龙县| 卢龙县| 五河县| 英德市| 江达县| 专栏| 宁海县| 五华县| 蒲城县| 板桥市|