New type of permeable concrete to address urban flooding

Updated 2017-07-11 16:55:36 chinadaily.com.cn

China Railway Construction Corporation has launched a new type of permeable concrete in a bid to address urban flooding, Shanghai-based thepaper.cn reported.

The public often joke about the "free sea view" in summertime, as the roads are always covered in puddles from the rain.

The official micro-blog of CRCC released a video showing how the water is absorbed by the new type of concrete on Monday. A worker turned the half-full bottle of water upside down on the floor, with tissues on either side. When the water spills out of the bottle, the tissues remain dry, as if the water has been absorbed by a sponge. The pavement is made of permeable concrete, through which the water flows into underground specialized pipes and storage tanks.

Permeable concrete, also called porous concrete, is a kind of lightweight concrete made of aggregate, cement, reinforcing agent and water. Compared with the traditional impervious road surface, it allows water to pass through, reducing the large amount of rainwater pooling on the road surface during heavy downpours.

To reduce the "sea view", China has initiated the sponge city strategy. The State Council issued the Guiding Opinions on Advancing the Construction of Sponge Cities in October 2015.

In sponge city, architecture, roads and the river system will soak up rainwater and storm water runoff will be accumulated, filtered and purified. Promotion of the construction of sponge city could repair the urban water ecology and prevent flash flooding.

For the first time, China has identified the development goals of sponge cities. Seventy percent of rainwater will be absorbed and utilized through the construction of sponge city. By 2020, more than 20 percent of the urban area will meet the requirements of sponge city construction. By 2030, that number will hit 80 percent. This year, "sponge city construction" was also written into the premier's government work report for the first time.

The central government grants special funds for the construction of sponge cities. In 2015, China began to carry out sponge city pilot construction in 16 cities. In 2016, another 14 cities will be in the sponge city pilot area funded by the central government.

Also in the News

Nicole Kidman Recalls Oscar Glory: Loneliest Time
Showbiz2016/06/16 13:58August 17 2017 21:33:42

Nicole Kidman Recalls Oscar Glory: Loneliest Time

Attending Shanghai International Film Festival, Nicole Kidman talks about her role in "Grace of Monaco".

Labor Day Travel Peak Starts
Also in the News2014/05/01 12:16August 17 2017 21:33:42

Labor Day Travel Peak Starts

Johnny Depp Delivers a Speech 'Evolve the Future' in 'Transcendence'
Also in the News2014/04/18 13:18August 17 2017 21:33:42

Johnny Depp Delivers a Speech 'Evolve the Future' in 'Transcendence'

Hollywood star Johnny Depp's speech in the upcoming new film "Transcendence" has been disclosed on Friday, April 11th.

Most Watched

News:
China World Business Sports Showbiz Audio
Video:
C4 My Chinese Life The Sound Stage China Revealed Showbiz Video Travel Video
Photos:
China World Fun Travel Entertainment Sports
Travel:
Beijing Shanghai Guangzhou
Lifestyle:
Live Music Opera & Classical Movies Traditional Shows Exhibitions
Learn Chinese:
Chinese Studio Living Chinese Everyday Chinese Just For Fun Chinese Culture Buzzwords