The National Ready Mixed Concrete Association points out that using ash in cement is not a new idea.

VOA: special.2009.12.01

He stands above a heap of shattered concrete and twisted metal on a windswept hillside in Arab East Jerusalem.

VOA: standard.2009.04.09

She calls for concrete and immediate action to hold perpetrators accountable, particularly since sexual violence continues to take place on a daily basis.

VOA: standard.2009.09.12

U.S.officials indicated that they're prepared to wait a few more days for an Iranian response to the nuclear proposals, but that the Obama administration expects concrete action and does not have unlimited patience.

VOA: standard.2009.10.24

There is literally concrete evidence of their work." Tony Hawk says skateboarding was once a sport on the edge of society.

VOA: special.2009.09.11

On June sixth,nineteen thirty-three, workers poured the first load of a building material called concrete.

VOA: special.2009.08.12

Portland cement is a material that holds together the sand and crushed stone in concrete.

VOA: special.2009.12.01

For example,he created a triangle-shaped walkway of steps that sits inside a rounded concrete shell.

VOA: special.2009.12.13

A concrete bridge was built about two hundred seventy-five meters above the Colorado River.

VOA: special.2010.10.27

"This is not a mere suspicion or speculation, some concrete indications of this possibly have been received."

VOA: standard.2009.09.25

"We've poured some concrete on site and then vehicles we get from a local scrap yard.

VOA: standard.2010.07.21

A few days later during a speech in Prague April 5, Mr.Obama said his administration will take concrete steps toward a world without nuclear weapons.

VOA: standard.2009.04.08

"The United States will take concrete steps towards a world without nuclear weapons.

VOA: standard.2010.08.06

if western nations came up with a "concrete proposal" to submit to Tehran.

VOA: standard.2009.03.18

These concrete structures are a simulation of an Afghan town.

VOA: standard.2010.04.06

Israeli and Indian media report the Counter-Terrorism Bureau in Jerusalem has upgraded a warning to Israelis and other foreigners traveling in India about a "concrete threat" against Jewish facilities here.

VOA: standard.2009.10.16

But Wednesday,the U.S.Senate joined the House in refusing the president's request for $80 million to close Guantanamo, saying he must first come up with a concrete plan to deal with the remaining 240 detainees.

VOA: standard.2009.05.21

"We're looking for concrete steps. And we take it as a positive sign that they've agreed in principle to take a couple of significant steps the opening of the Qom facility, and then working out a procedure for having their low-enriched uranium re-processed in another country.

VOA: standard.2009.10.24

"This is a time where business community looks for specific concrete moves by the government so that we are able to build confidence and bring confidence back to the system and at the same time we'll be able to help promote more trade and investment,".

VOA: standard.2009.11.11