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What is Chemical Anchoring?

Chemical anchoring is a technique for fastening to concrete and similar substrates that provides more flexibility than mechanical anchoring. With chemical anchoring, a resin is injected into the hole prior to insertion of the stud. With this, the chemical naturally fills in all irregularities and therefore makes the hole airtight and waterproof, with 100% adhesion. Chemical anchors have virtually unlimited embedment depth, so you can embed any length of rod into the hole to increase the load capacity. And if you choose to use a larger-diameter hole with a thicker rod, you increase load capacity again.
Chemical anchors are a type of anchor bolt that relies on chemical bonding. The method fastens steel studs and bolts into a substrate via chemical and resin means. The substrate most frequently consists of masonry or concrete. Chemical anchors are used to fasten threaded rod and rebar in high-load and critical fixings. They provide a more flexible adhesive to the fixture than their mechanical anchor counterparts.

Why do we do Chemical Anchoring?

Chemical anchoring is generally done to provide starter bars for lintels, stiffener beam and column or beams where a strong anchorage of bars to be given. Epoxy adhesive anchoring system is used widely for anchoring purpose. Drill bit size is depending on the rebar going to be anchored to the structure. After drilled the hole, the hole should be cleaned with hole cleaning pump to remove all dust inside. Then the resin should be injected with injection anchor dispenser and pushed the bar inside while giving a torque to expel the excess resin out before hardening of resin. The loading capacity can be increased by extending the embedment depth of bar. The following table shows the required hole diameter and embedment depth for the anchoring rebar size.

Best Chemical Anchors in UAE?

NDTS is UAE’s leading reliable and trustworthy supplier for industrial tools and equipment. The chemical anchors provided by NDTS are resistant to the highest loads.
NDTS puts new technical material at your disposal that will allow you to expand your knowledge in the world of fixing. The fixing of elements using chemical anchors offers unlimited possibilities depending on what you need. Criteria such as quality, assessments or base material implies selecting one anchor or another to meet the required expectations. We s wishes to highlight the importance and responsibility implicit in the calculation and installation of an anchor in a structure, bridge or other application. All the study processes must be carried out as thoroughly as possible and based on technical knowledge.

What are the types of Chemical Anchoring?

1. Polyester chemical anchor

Polyester chemical anchors are a common injection anchoring system in the market that is easy to use and apply widely. 2 components are filled in various sizes of the dual injectable cartridge. It is a reactive resin used to produce 2-component injection mortar. They are used for fixing steel dowels, staircases, handrails, building facades, sound barriers, pipelines, awnings, brackets, post-installation rebar connections. It can also be used for medium loading, threaded rod and rebar anchoring on dry concrete or uncracked base.

2. Unsaturated Polyester chemical anchor

An unsaturated polyester chemical anchor is a reactive resin used for the production of a 2-component injection mortar, whereby both unsaturated polyester resins dissolved in styrene (the original resin type) and styrene-free unsaturated polyester resins with styrene related monomers as a reactive solvent are used. Different formulations offer a versatile range of applications and benefits. In modern products, lower-level resins are designed for use in masonry and uncracked concrete applications. Whilst at the top end, methacrylate’s and pure epoxies can be used in more stressful applications, such as cracked concrete, rebar and seismic conditions.

3. Epoxy acrylate chemical anchor

Epoxy acrylate chemical anchor is a two-component resin of styrene free epoxy acrylate for use in concrete and masonry. It is designed as a fast curing, high strength resin fixing anchor for very high loads and critical fixings especially in corrosive environments or damp conditions. It is applicable for heavy, high-performance loads, rapid curing and low odor, xx based on styrene-free vinyl ester technology with high reactivity. It provides very good chemical resistance in highly aggressive environments or under humid conditions, even in underwater anchors. It is also used for fixations in solid construction supports or hollow materials, in walls, columns, facades, floors, etc.

4. Pure epoxy chemical anchor

Pure Epoxy Standard is a two-component 1:1 ratio pure epoxy bonded anchoring system for use in cracked and uncracked concrete under normal and seismic conditions. Developed for the most demanding structural applications and rebar connections, Chemical Anchor Pure Epoxy Standard guarantees a very high load-bearing capacity. It is designed especially for the Construction Industry. Few applications include anchoring of threaded rods, reinforcing bars or internally threaded rod sleeves into concrete (normal, porous & light) as well as solid masonry. It has a very high bond strength to concrete failure, thus making it suitable for very smooth climate conditions. It is ideally suited for high load applications, the resulting bond is stronger than the base material itself and as the system is based on the adhesion principle, no additional load stress is imparted to the base material as with expansion type anchors and are therefore ideal for close to edge fixing, reduced center and group anchoring and use in the concrete of unknown quality or low compressive strength.

5. Hybrid systems

The hybrid system includes a two part chemical anchor that is designed to cure fast so you can load the fastening point earlier than you could with an epoxy anchor. It can be used anywhere requiring a threaded rod or rebar into concrete. Whether you require anchorage for structural steel connections such as steel beams or columns to concrete, structures such as racking, sound barriers or fencing, Highly reactive resins can be injected into the borehole before the insertion of the steel stud or bolt. The reacting mixture fills in all irregularities and makes the hole airtight with 100% adhesion, which creates extra load strength. It also reinforces the structure of the concrete walls as well as around the borehole, making it resistant to cracking. Finally, chemical anchoring allows the installer to make slight adjustments to the stud’s alignment while the chemical mixture is still curing.

What is the hole size of chemical anchors?

Studs are generally available in 8, 10 and 12mm sizes. Dowels, for reinforcement or joining are available in high tensile plated steel or epoxy-glass in 6 – 25mm diameters. Masonry drill bits are required for this and you need to allow a standard over-size of at least 4mm on the diameter – an 8mm stud will require a 12mm drill bit and so on.

What is wire saw?

Wire saw is a saw that uses a metal wire or cable for cutting. Industrial wire saws are usually powered. There are also hand-powered survivalist wire saws suitable for cutting branches. Wire saws are classified as continuous (or endless, or loop) or oscillating (or reciprocating). Sometimes the wire itself is referred to as a "blade".
A wire saw makes use of a cable cutting and metal wire. A simple wire saw can be used manually by simply rubbing the wire rope across the object to be cut. When the sharp wire rubs across the subject,it cuts through it. Industrial wire saws do not require manual work, and rather they are powered to make precise cuts more easily. They are, hence, more efficient in cutting intricate detail sand fragile crystals.

Is wire saw effective?

Wire saws are very effective medium to use as they are lighter, easier to store, and can cut large logs for a lasting fire or a recovery shelter. Besides being very intuitive to use, these saws are very effective, to the extent that some special models are used in mining and quarrying to perform the first rough cut of the material. Typically, they consist of two handles and a braided wire blade. In the simplest design, the blade is just a stainless-steel wire, while other models include a multi-strand cutting wire or even a chain. Using such a saw is quite easy: you just need to wrap the material to be cut, put the wire on tension, and pull the handles alternatively.
These wire saws make use of diamond impregnated beads and are large machines that can use for the purpose. On the other hand, abrasive wire saw, either automatic or manual, is used commonly for cutting the foam into different shapes and sizes. In various industries, wire saws use for cutting foams such as in the furniture industry where foam has to be cut for cushions and couches, etc. In the housing industry, wire saws are also used, such as for insulation and pipe insulation.

What can be done using wire saw?

The wire saw are used in wide-range . Mining and quarrying industries make use of a wire saw for cutting hard stones into large blocks. These blocks are then transferred to processing plants so that they can refine further, or they sent to distributors.

  • Dismantling large steel structures e.g decommissioning mine sites
  • Ideal for cutting thick/reinforced concrete structures: bridges, dams, factory floors, jetties, columns or beams
  • Making angular cuts to vertical and horizontal structures
  • Performing cuts in restricted, confined and sensitive areas
  • Cut through heavy rebar and embedded steel
  • Cut circular openings
  • Extreme applications can include subsea cutting of pipelines, conductors and other various underwater structures

What is wall saw?

Wall sawing also known as track sawing, is the most effective cutting solution for vertical or sloped surfaces made of concrete, reinforced concrete, stone, asphalt, or cinder block. Wall sawing uses a circular diamond blade, usually attached to a track-mounted machine, allowing for precise placement of the saw cut. The track system enables the wall saw to be attached to just about any horizontal or vertical surface, including steep inclines and floors.
Wall saws run on hydraulic, air, or electric power—and can make both straight and bevel cuts. The wall saw is an excellent choice for creating precise openings in any concrete structure. The wall saw blade with laser welded segments are for sure the best choice, because they grant high cutting performance and avoid any possible detachment of the segment from the metal core.

What is concrete wall saw machine?

The wall sawing technique calls for a circular blade on a track-mounted machine. This machine is capable of operating on vertical walls, steep inclines, or on floors. It is also suitable in circumstances not suited to flat saws. It involves a round steel core that includes diamond segments attached to the outer side.
The method of diamond wall or track sawing is generally utilized in applications needing precise cutting utilizing straight and bevel concrete saw cutting. For example, dimensional window, door and vent openings.
The wall sawing technique is a highly efficient method of concrete cutting, powered by hydraulic, air or electric sources. It is an option that provides a solution for the creation of exact openings in any form of concrete structure.

Best Wall saw service company in UAE ?

New Diamond Technical Service (NDTS) of UAE have been providing concrete cutting, drilling, and sawing services for over 15 years. We have gained practical experience in working safely with the most cost-effective methods for cutting, drilling or sawing concrete and other masonry materials.We are able to provide our customers with the latest in technically advanced cutting equipment, tools, and technology.
NDTS wall saw are powerful, compact and lightweight. This is really an exceptional combination.

What is Concrete Scanning?

Concrete scanning is a non-destructive concrete assessment technology which is used to detect material or voids within a concrete slab. This could include concrete-specific ground penetrating radar (GPR), a cover meter, an ultrasonic scanning equipment. Regardless of which of these tools is used, they are all able to penetrate the ground and locate objects and/or anomalies within a specified depth range and in a variety of conditions. Those anomalies are then interpreted by our highly experienced engineers; time served professionals who can tell you what lies beneath and, crucially, what might need to be avoided during any works due to take place. At NDTS we have variety of different scanning options available.

Why concrete scanning is used?

It is used because huge range of construction projects – particularly renovations – may involve the cutting or coring of a concrete slab for a real variety of reasons. When carrying out this type of work, it’s vital that those involved are aware of anything beneath the service that may pose a risk to them, other people or the structure itself.
For example, if when cutting into a slab, the workers accidentally cut through a cable, reinforcement or a utility, the outcome could be costly and potentially dangerous. It could be costly because of the cost of repairs, because of the resultant negative effects upon both program and budget or because of the trickledown effect upon other trades, taking time and resources from what are often already stretched budgets.

How does concrete scanning works?

Concrete is scanned with the use of ground penetrating radar. A device is passed over the concrete’s exposed surface, sending a signal into the concrete. The signal is deflected back to the device in different patterns depending on what type of material is found in the concrete and how deep the material is. An experienced technician will be able to determine the type and location of the material based off of this reading. Ground penetrating radar is effective at penetrating concrete in order to determine what is inside of it. GPR can be used to detect any non-concrete material or voids within. GPR equipment is regularly used to scan for the location of rebar in concrete columns and walls. It can also be used to scan the underside of a floor to mark out the reinforcing steel and any embedded conduits.

Best Concrete Scanning company in UAE ?

NDTS Easy Locator Core includes the best data quality on the market, real-time interpretation support through wireless data collection using mobile devices, cloud storage, post-processing and on-site reporting. All with the fastest workflow on the market.
It is great for avoidance with its light and flexible design, ease-of-use and unique ability to support the user with instant feedback. The Easy Locator Core has a number of unique strengths which make it the best choice for any mark-out project.

What is concrete drilling?

Concrete drill is cylindrical drill that is used to make holes through a surface. It is made of metal, and the drill tips are usually coated with either diamond or carbide. A core drill is composed of a motor, handle, and drill bits. The main difference between a core drill and other cement cutting tools is that a core drill will extract a sample from the material. The center of the drill is hollow, allowing it to carve out a sample from the drilled material. This sample, called a core sample, conforms to the shape of the hollow walls of the drill.
A core drill can penetrate various surface types. It can cut cement, wood, rocks, and ice. It pushes through the surface with a twisting motion to create the hole. A different drill bit needs to be installed for each surface to allow for the best performance.
The size, power, and features of a core drill can vary, depending on what it will be used for. Individuals can use a small core drill at home, while a powerful, medium-sized drill can be used for buildings and mines. Large drills are usually used for the cutting of concrete on massive construction projects.
Drilling a hole in concrete is a useful and handy technique. You can put up shelves, hang paintings, install lights, and do much more quickly and safely. The process itself is simple, but selecting the right tools and understanding how to use them will save you a huge amount of time.

How to drill into concrete?

  1. Mark the desired position of the holes in pencil on the concrete surface, and double-check their locations before you proceed.
  2. Don your goggles, then insert the appropriate tungsten carbide masonry drill bit for your desired hole size into the hammer drill. Next, get into position to drill by planting your feet firmly on the ground, shoulder-width apart. Hold your drill securely with both hands: Grip it in one hand like a handgun, and, if there’s no auxiliary handle for your spare hand, use that hand to brace the back of the drill.
  3. Make a guide hole first. Many hammer drills offer only two speeds, so turn your drill on at the slower speed for best control when making the guide hole. If your drill has only one speed, then work in short, controlled bursts of a few seconds each until you’ve established a hole. The guide hole needs to be just 1/8 to ¼ inch deep.
  4. When you start with a guide hole at least 1/8 inch deep, your drill will be easier to control, but all the same continue to operate the drill with a steady, light-but-firm touch so you’re never forcing it in. If you’re feeling confident, turn the speed to full, keeping a firm grip on the tool with both hands, and drill into the concrete until the hole is complete. When you start with a guide hole at least 1/8 inch deep, your drill will be easier to control, but all the same continue to operate the drill with a steady, light-but-firm touch so you’re never forcing it in. If you’re feeling confident, turn the speed to full, keeping a firm grip on the tool with both hands, and drill into the concrete until the hole is complete.
  5. If you hit obstructions, never force the drill farther into the concrete. This can damage the bits or drill, or cause you to lose control of the drill and mess up your hole, damage the concrete surface, or worse.
    Whenever you reach any too-tough-to-crack spots that impede progress, set the drill down and grab the masonry nail and hammer. Put the tip of the masonry nail at the problem spot and give it a few taps—not hard whacks—with the hammer to break up the obstruction. When you’re done, resume drilling the concrete at a slow speed until you’re sure you’ve passed the rough patch.
  6. Periodically pull the drill out to brush away concrete dust. Considering you can bore a two-inch hole in under a minute using a hammer drill, pausing every 15 to 20 seconds should suffice.
  7. Once you have drilled your hole to the necessary depth, blow all of the concrete dust out of the hole with a can of compressed air then vacuum up whatever has fallen to the ground. You should still be wearing your goggles throughout this process in order to protect against any concrete dust and shards that might fly in your face and scratch your eyes.
  8. Repeat this procedure for any other holes you need. Once through, a pass with a vacuum will make cleanup a breeze.

What are the types of Concrete Drilling?

There are two main types of core drilling: hard coring and soft coring. This refers to the type of lithology each method is suited for.
Soft coring is used when taking a core sample of unconsolidated material and is capable of reaching depths of 500 feet (or more—but this is what is typical for environmental industry projects). Soft coring uses a punch core system. This involves using two barrels, one nested inside the other. The inner barrel is pushed out in front to capture the core sample, then the outer barrel is extended to provide casing, so the hole doesn’t collapse. This method protects the integrity of the sample from the air or fluid used when progressing the outer barrel.
Hard coring is used when the subsurface consists of materials as hard or harder than sandstone. Much greater depths can be reached with this type of coring; when telescoping, 5,000 feet bgs is not uncommon. Hard coring also uses two nested barrels, but the outer barrel is extended before the inner barrel. This means the sample is washed with the drilling fluid or air, but because the core sample is of competent rock, there is no danger in it being disturbed or contaminated. Hard coring is sometimes referred to as diamond coring, as drill bits with small diamonds embedded are used in difficult lithology to cut through rock.

Best Concrete Drillers in UAE?

At NDTS, we offer a full range of concrete cutting services, state of the art technology, highly qualified employees, a ‘safety first’ mindset, and unequalled customer service. We are committed to seeing your project through from beginning to end. We are committed to innovation, our customers, and our community.

What is Controlled Demolition?

The term ‘controlled demolition’ refers to the demolition of a building or structure by means of explosives. The process of systematically demolishing a structure in order to achieve a certain objective. Often used for working on buildings where high control measures of safety and order are essential, controlled demolition ensures that disturbance to the surrounding structures and area is kept to a minimum.
Safety is paramount in controlled demolition, achieved by removing sections of the building in a timed process to ensure that no damage comes to the surrounding buildings, and that dust and debris can be cleared in an orderly way. All of our controlled demolition projects at M Hall Diamond Drilling are carried out using state-of-the-art machinery.

What are the types of Controlled Demolition?

  1. Brokk Robotic Demolition:– a method that can be used off site with the use of a remote control. This hand held remote enables the machine to do the dangerous work for us, so our workers can avoid falling rocks, concrete and general debris. Brokk Robotic demolition is precise, quick, efficient and can be maneuvered into hard to reach areas – they can even climb the stairs! Brokk Robotic demolition is also environmentally friendly because it gives off very little noise pollution and thus, reduces the negative impact on the local workers and wildlife.
  2. Diamond Drilling:– uses a rotary drill fixed diamond drill bit to make flawlessly measured holes. Why use a diamond drill bit? Diamond is the hardest naturally occurring matter, which is why it’s a common method used within this industry because it can drill through strong, resilient materials including concrete, glass and metal.
  3. Hydraulic Concrete Bursting and Crunching:– the ‘bursting’ method is used to demolish vast concrete structures in a quick and safe way. This works by placing hydraulic bursting heads into drilled holes, which then creates splitting forces up to a maximum of 500 tons in order to crack the material. Once this is complete, the concrete will then be crunched and this method recycles uncontaminated concrete.

How do we do controlled demolition?

At NDTS, UAE , all demolition works undertaken by a qualified and experienced demolition contractor are completed in a controlled environment. This ensures the safety of the demolition team, other contractors and stakeholders, and the surrounding general public.We perform four major steps:-

  1. Surveying:- Surveying means the study of different features of the building or structure and surroundings.
  2. Removal of hazardous materials:- Hazardous materials which could include asbestos could come to light as the result of a demolition survey. Specialist asbestos removal and remediation companies should be employed to remove dangerous substances from the site before the Demolition.
  3. Preparation of plan:- A demolition plan illustrates the different process involved, and they are:
    • Location of the building.
    • The distances from adjacent buildings, roads, structures and schools.
    • The structural support.
    • Method statements for the Demolition of the building; showing the sequence of Demolition and the method of Demolition to be employed.
    • A health and safety plan showing all the measures for the protection of the public including hoardings, covered walkways, crash decks, and scaffolding protection screens.
    • Waste management plan.
    • Programme of the demolition process.
  4. Safety measures:- Safety Measures during Demolition of Buildings
    • All the workforce will have a site induction and toolbox talk to discuss methods and environment.
    • Fire and emergency plans are prepared and included within the health and safety induction.
    • As a matter, of course, measures are put in place to reduce and monitor, Dust, noise and vibration.
    • All the workforce wear full PPE. Occupational health checks are carried regularly for all demolition workers.

What is Interior Fit Out?

The term fit-out refers to providing necessary equipment for the buildings like interiors, decorations, fittings .Shell and core are type of buildings developed for office buildings for rent and also to speed up the design and building process. Interior fit out refers to the installation of ceilings, floors, furnishings, and partitions of a building, as well as the installation of all required building services.

What’s the difference between interior design & Fit out?

When talking about interior designing, it is more about the look, style, and feel, of the inside of a space (whether residential or commercial). It deals with color choice, décor, flooring, furniture, material, texture and designs. A fit-out, on the other hand, pays more attention to features like the shapes and sizes of rooms, placement of windows and ventilation, space planning, plumbing, heating, doors, lighting and any other utilities.
NDTS in Dubai, our company offer fit out solutions at competitive prices. Creative Shelf is one of such firms here that is renowned for its interior designing as well as fit-out component. We have the best team of experienced experts who offer their services for the entire of your designing project from scratch to finish.

Best Interior fit out company in UAE?

NDTS leads among the best interior fit out companies in UAE . NDTS interior design projects are light, stunning and creative, a combination of different styles that allows their clients to fall in love with every single one of them.
We believe “The essence of interior design will always be about people and how they live. It is about the realities of what makes for an attractive, civilized , meaningful environment , and not about fashion or what’s in or what’s out. “

What is GPR Scanning?

Ground penetrating radar (GPR) is a non-destructive detection and imaging method which can be used to identify subsurface elements either underground or within a surface such as concrete. It is a geophysical method that uses radar pulses to image the subsurface. It is a non-intrusive method of surveying the sub-surface to investigate underground utilities such as concrete, asphalt, metals, pipes, cables or masonry. This nondestructive method uses electromagnetic radiation in the microwave band (UHF/VHF frequencies) of the radio spectrum, and detects the reflected signals from subsurface structures.It detects metallic and non-metallic objects and voids.It is faster, safer and lower cost than radiography and uses pulses of electromagnetic radiation to image the subsurface. It provides a non-intrusive and non-destructive method of surveying the sub-surface.

What we can see in GPR scan?

Through GPR scanning ,we can scan a variety of mettallic and non-metallic materials. r can locate all types of utilities, including electric, steam, communications, gas & oil, water,sewer & storm, and many others.It can also be used to locate void spaces, unmarked graves, and other buried elements.GPR is used in concrete scanning applications to locate the presence of voids, rebar, conduit, post-tension cables, and other structural elements.Ground Penetrating Radar will detect most materials providing there is a sufficient difference in the electromagnetic property between the target and surrounding material. Ground Penetrating Radar will not work in certain ground conditions such as heavy clay soils, particularly if they are waterlogged. De-ionised water does not pose a problem to GPR. However, water with a high mineral content (e.g. seawater) attenuates the signal making it an unsuitable medium. Ground Penetrating Radar is also unable to penetrate through metallic objects, including very dense reinforcement.

Why do we need GPR Scanning?

GPR Scanning is needed so that the contractors or homeowners get to know a clear picture of what lies beneath before continuing a project.It is used to create a map of underground utilities and other findings, as well as to scan for materials within concrete. Both applications are necessary before performing any work which would disrupt or damage these elements.Both applications are necessary before performing any work which would disrupt or damage these elements.It is regularly used to scan for the location of rebar in concrete columns and walls. It can also be used to scan the underside of a floor to mark out the reinforcing steel and any embedded conduits.

What is the depth of GPR radar?

The depth of GPR radar is dependent on the application being used. For concrete scanning, the radar used can typically penetrate depths of 18-24”. For private utility locating needs on grass, soil, asphalt, or concrete the type of antenna used can penetrate up to 8.