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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.Preparation of WMM from plant:
Wet Mix Macadam shall be prepared, as per approved design proportion. In the pug mill plant with controlled addition of water. Water to be maintained within limit. Gradation of the mix shall be checked at the start of plant for the day work.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.
Table of Contents
How do you make a WMM?
Preparation of WMM from plant:
Wet Mix Macadam shall be prepared, as per approved design proportion. In the pug mill plant with controlled addition of water. Water to be maintained within limit. Gradation of the mix shall be checked at the start of plant for the day work.
What is WMM in road construction?
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.
Wet Mix Macadem Construction in Highway | WMM Construction Technical Specification | Video No.6
Images related to the topicWet Mix Macadem Construction in Highway | WMM Construction Technical Specification | Video No.6
What are the ingredients in WMM?
Materials used in the WBM are the stone aggregates, screenings and binder material(Stone dust with water) while in WMM material used are only stone aggregates and binders.
What is the function of WMM?
WMM maintains the priority of audio, video and voice, over other applications which are less time critical. Using QoS (Quality of Service) Wi-Fi Multi-Media (WMM) ensures that the applications that require better throughput and performance,are inserted in queues with higher priority.
Which type of material is used in WMM for road construction?
Materials used in the WBM are the stone aggregates, screenings and binder material(Stone dust with water) while in WMM material used are only stone aggregates and binders.
What is difference between GSB and WMM?
The GSB is granular sub base and WBM is water bound macadum. The GSB is used as sub base course and it also works as filter media,as it contains coarse sand and shingle. The. WBM is used as base course and it contains stone metal mixed with binding material.
What is wet mix concrete?
Wet concrete is the liquid mixture of cement, sand, gravel and water. As soon as wet concrete has cured, it is called just concrete. Depending of what you will use your concrete for, e.g. building a brick wall or pour a concrete foundation, the mixture ratio of your ingredients will differ.
See some more details on the topic How do you make a WMM road? here:
METHODOLOGY FOR WET MIX MACADAM – HIGHWAY GUIDE
The first layer will be laid by motor grader and the second layer mix shall be spread by a WMM paver finisher capable of paving minimum 4.5m to …
Wet Mix Macadam (WMM)-Grading, Testing and method of …
Wet Mix Macadam construction is an improvement upon the conventional Wet Bound Macadam (WBM) and is intended to be as an alternative and …
Wet Mix Macadam Construction And Quality Control
Wet Mix Macadam(WMM) work includes laying and compacting clean, crushed, graded aggregate and granular material, premixed with water, …
What Is The Meaning Of Wmm In Road Construction?
In this context, it involves constructing a dense mass or preparing a GSB layer or existing road by laying and mixing dirty, crushed, …
What is density of WMM?
The maximum dry density of Wet Mix Macadam used in Road Construction must be 2230 Kg/Cum.
How do you make GSB?
3.1 Material
The material used in GSB shall be mixture of natural sand, moorum, gravel, crushed stone in specified grading given in Table 400‑1. Crushed slag, crushed concrete, brick ballast and kankar can also be used on the prior approval of the Engineer or competent authority.
Is sieve size for WMM ranges from?
…
Test Procedure for All-in-Aggregates or Mixed Coarse and Fine Aggregates.
| Sr. | Maximum Size Present in Substantial Proportions (mm) | Minimum weight of Sample to be taken for Sieving (kg) |
|---|---|---|
| 1. | 63 | 50 |
| 2. | 50 | 35 |
| 3. | 40 or 31.5 | 15 |
| 4. | 25 | 5 |
WMM Laying
Images related to the topicWMM Laying
What is the size of GSB?
GSB :- Granular sub base or GSB is a typical layer adopted in highway construction, which is laid above the subgrade and below the crust materials. Naturally available material consisting of various grades may be used for GSB, the largest grain size up to 65mm.
What is GSB road?
Granular Sub-base (GSB) consists of laying and compacting well graded material on prepared sub-grade in accordance with the specifications.: GSB layer is intermediate layer in between Sub-grade and Wet mix macadam. GSB layer is laid in roads and higway works due to its properties .
What is WBM road?
The full form of WBM is Water Bound Macadam. It is the layer of road constructed from broken stone aggregates bound together by stone dust or screening material and water applied during construction and compacted by a heavy smoothed wheel roller.
What is water macadam road?
WBM road means water bound macadam road. The wearing surface of WBM road consist of clean and crushed aggregates which are mechanically interlocked by rolling operation. The material is bound with filler material (which are also called as screenings) and water, laid on prepared base course.
What are the materials required in WBM and WMM?
The coarse aggregates used in W.B.M generally consists of hard varieties of crushed aggregates or broken stones. However, soft aggregates like over burnt bricks metal, kankar and laterite may be used.
What is WMM and WBM?
WBM(Water Bound Macadam) conventional method and WMM(Wet Mix Macadam) modern technology- are base course layers for Pavement/Road design. In case of WBM stone aggregates and binders are overlaid on one another at the time of construction.
What is G1 G2 G3 in road construction?
G1, G2, and G3 are the aggregate gradations ranging from the most porous to the least porous, respectively. Properties of SFP include its volumetric properties, quality, and durability.
What is CRM in road construction?
CRM is a mixture of bitumen and modified bitumen rubber is intrusive. The viscosity modifier rubber used asphalt binder and temperature resistance as well as resistance against brittle at low temperatures increases. CRMB has good adhesion to mineral mass, and thereby reduce brittleness and deformity.
What is wet cement called?
(redirected from Wet cement)
WMM in Road Construction | WMM WBM | WMM road construction procedure
Images related to the topicWMM in Road Construction | WMM WBM | WMM road construction procedure
What’s the best mix for concrete?
Four-two-one and the Seven Part Mix Ratio
The safest bet for any concrete mix is four-two-one: four parts crushed rock; two parts sand; and one part cement. The four-two-one mix, obviously, has seven parts. Conveniently, when mixing concrete, the ratio can be mixed on any range of scales.
How much cement sand and gravel do I need for concrete?
A standard mix for concrete is 1 part cement to 2 parts sand to 3 parts gravel (1:2:3) by volume to achieve enough strength of about 3000 psi which is ideal for your Patio, sidewalk and slab.
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