Saad Iqbal 
When it comes to concrete with a large ratio of aggregate to cement; one of that type is dry lean concrete or (DLC). DLC contains pretty less amount of cement paste when compared with conventional concrete. The word “lean” in the Dry Lean Concrete shows that it has more aggregates rather than cement or binding … Read more
WBM is an acronym for water bound macadam road which is a conventional method for constructing base course layer of a flexible pavement or road. The base course takes position above the granular sub-base or GSB. In a typical WBM base course, stone aggregates are laid along with binder on the top at the time … Read more
GSB is an acronym for Granular Sub Base. As the name suggests, it is a granular material that act as road foundation and takes up as sub-base layer above the compacted sub-grade surface. The basic purpose of granular sub-base is to protect the base and wearing course from the capillary water action from the subgrade. … Read more
In Civil Engineering and road construction, PQC stands for Pavement Quality Concrete. It is a M40 high quality concrete that is designed in accordance with IRC-15-2002 standard. In road projects, PQC is used as a top wearing layer for concrete roads. The thickness of such a wearing layer is generally from 180 mm to 300 … Read more
DBM full form is Dense Bituminous Macadam in road construction. It is a binding layer that is mainly used in roads to be used by commercial heavy vehicles. The binder course includes use of close-graded premix material with void content in the range of 5 to 10 percent. Because of heavy-loading, the bituminous macadam and … Read more