What's New

What's New

Latest News

GORD joins MME’s Plant Million Trees Initiative

Senior leadership from MME, GORD and QSTP planted saplings of trees in the precincts of GORD’s TechnoHub research facility as a part of Plant Million Trees Initiative.

Read more

Qatar Foundation’s HQ awarded GSAS Gold Certificate for operating sustainably

2015 building at Education City receives GSAS certification, and represents an example of how to operate a ‘green’ building.

Read more

The project also aims to explore the potential of combining novel calcium different types of cement with recycled construction and demolition waste (CDW) streams, initially in precast non-structural units (e.g., kerbing and blocks) through to ‘minimal requirement’ structural units (e.g., lintels, window jambs etc).  However using recycled materials must not have an adverse effect on durability or the engineering properties of concrete. There is evidence that certain ‘green’ concretes may have poor carbonation resistance and properties can be adversely affected. Technically these issues can be resolved by careful specification writing for both the aggregates and their use in concrete.

There is a limitation on the use of local limestone aggregates due to durability concerns. The majority of concrete manufacturers in Qatar import gabbro aggregates from the UAE to substitute the local limestone. Hence, this project will investigate the screening and selective use of local Qatari high quality limestone aggregates in green concretes. It also explores the limestone rock crushing to provide both a fine filler (i.e., high fineness with a specific surface area >600 m2/kg and as alternative to dune sand. Limestone will also be crushed to form an alternative to dune sand for use in mortars.

Recycled and Synthetic Aggregates


COPYRIGHT 2021 - Gulf Organisation for Research & Development