What is wet mix macadam road base?
Wet Mix Macadam(WMM) work includes laying and compacting clean, crushed, graded aggregate and granular material, premixed with water, to a dense mass on a prepared GSB layer or existing pavement as per the requirement of the project.
How WMM is laid?
Laying of wet mix macadam (wmm) mix The first layer will be laid by motor grader and the second layer mix should be spread by a WMM paver finisher capable of paving minimum 4.5m to 9.0m width. No segregation of materials is allowed. The aggregates should be of uniform size with no quantity of fine materials.
What is the use of WMM in road construction?
Wet Mix Macadam (WMM)-Grading, testing and method of construction. Wet Mix Macadam construction is an improvement upon the conventional Wet Bound Macadam (WBM) and is intended to be as an alternative and more durable pavement layer in roads and highway works .
How many grades are in WMM?
3 grades
For the construction of the WBM roads aggregates are used in the sub-base, base and surface course and so the aggregates are divided into 3 grades according to their size.
What is the tolerance of GSB?
Specified tolerance in subbase GSB – (±) 6 mm. One measurement per 1000 m2 and minimum 6 per section. Specified compaction for GSB – 98 % of MDD (MDD by IS 2720 Part – 8). There is a possibility of getting a higher compaction which results normally upto 104% due to the presence of coarse crushed material.
What is wet mix macadam plant?
This central mixing plant for granular base and sub base production provides higher productivity with close control on quality of mix and production costs.
Which is better Wmm or WBM?
The WMM roads are said to be more durable. The WMM roads get dry fast and can be opened for traffic within less time as compared to the WBM roads, which take about one month for getting dry. WMM roads are soon-ready to be blacktopped with the Bituminous layers. WMM roads are constructed at a faster rate.
What is the MDD of GSB?
According to Indian standards i.e. MoRT&H 5th revision Grade III is open grade to be provided for GSB. As per compaction test conducted and obtained MDD of 2.14gm/cc & OMC of 3.18 % to be achieved in the field.
What is the rate of GSB?
Granular Sub Base (GSB) Road Material, Packaging Size: 50 kg, Rs 475/ton | ID: 21100875112.
How to prepare wet mix macadam mix?
Preparation of WMM Mix : Transportation, Spreading, Compaction and Finishing: 0. Wet Mix Macadam (WMM) work includes laying and compacting clean, crushed, graded aggregate and granular material, premixed with water, to a dense mass on a prepared GSB layer or existing pavement as per the requirement of the project.
How to prepare base for macadam construction?
Preparation of base shall be done as per Cl.404.3.1 of MORT&H technical specification. While constructing wet mix macadam, the arrangement shall be made for lateral confinement of the wet mix.
Why choose Kaushik made wet mix macadam plants?
All Kaushik manufactured Wet Mix Macadam plants possess robust structure and high quality precision. In order to meet the varying needs of our customers, Kaushik Engineering plants can be customized from 100 TPH to 300 TPH according to the construction requirements.
What is the MoRT&H clause 406 for wet mix macadam?
Wet Mix Macadam shall be constructed as per the MORTH Specifications, Clause– 406 and also as per change made to various Sub-Clauses in Clause–406 furnished in Contract Technical Specifications. MDD & OMC shall be determined as per MORT&H clause 406 for the material so blended.