Indospark Construction Services

Chemical Mortar CM345VESF

 
Steel, Zinc plated / Stainless Stee A4 316
 
 
Chemical anchor stud CAS
 
 
Approved for Non-cracked concrete >= C20/25 & max C 50/60 
For Fixing of 

1. Staircase , Consoles , Steel Constructions, High Racks, Gates, Fascades
2. Standfoff installation, Wooden Constructions, Machines, Ladders,Railings 
 
Advantages
1. Threaded rods are supplied with an easy to use hexagonal installation drive or can be installed with an adaptor.
2. The resin anchoring is free of expansion forces and permits small axial spacing and edge distances.
3. Wide range for many applications.
  • Overview
  • Description
  • Product Range
  • Installation
  • Loadchart

What are chemical anchors 

Chemical or resin anchors are characteristics related to steel studs, bolts or fixings which are bonded into a substrate, commonly masonary and concrete, with the use of a resin based adhesive system. Ideally suited for high load applications, in almost all cases the resulting bond is stronger than the base material itself and as the system is based on chemical adhesion, no load stress is exposed to the base material as with expansion type anchors and are as a result ideal for close to edge fixing, reduced centre and group anchoring and use in undetermined concrete quality or low compressive strength. All systems function using the same principle with the base resin requiring the introduction by mixing of a second component to start the chemical curing process, hence the term chemical anchor.

Chemical anchor formats 

Injection cartridge systems are the most commonly used format and consists of two resin components in separate compartments of a cartridge which mix proportionally in the supplied nozzle when pumped using the specific manual dispenser for each type, this is a very versatile delivery system as relatively resin may be used per anchor dependant on the application and it can be applied with variable types and sizes of anchor bolts and fixings, the outcome non sag mix makes this system the ideal choice for horizontal and overhead installations and perforated and hollow masonry.
Glass capsule systems consists of a resin, a quartz sand aggregate and a catalyst (in a secondary vial) all metered and factory sealed in a glass capsule for mixing in the hole with a specific anchor stud which is driven through the capsule using a drilling machine, smashing the glass which then also forms part of the aggregate. Glass capsule systems provide high bond strengths due in part to the larger aggregate size in comparison to the finer aggregates used for injection systems and they are a simple cost effective method of chemical anchoring. Glass capsule systems are generally viscous in nature, prior to mixing, and can be unsuitable for overhead installations and hollow masonry.

Resin formulations

There are two fundamental resin catagories, catalytic and non-catalytic, the dissimilarity being catalytic resins use a two component resin and catalyst at rations of almost 10:1 and it is this catalyst that activates the curing process. The chemical reaction of the two components when mixed spreads throughout the mix provided that the base resin is in contact with any amount of the catalyst, the advantages of these resins are that mix proportions are not crucial and they are usually less costly due to the lower amounts of catalyst needed per mix volume. Catalytic resins for chemical anchoring are once more broken into different types such as polyester, vinylester, epoxy acrylate and methacrylate etc. dependant on the manufacturers formulation, all offer differing advantages and performance. For the CFS range we offer polyester, epoxy acrylate and vinylester with vinylester being ETA approved, and the highest performer of the three for strength, durability and load testing..
Non-catalytic resins, usually mixed in 1:1 rations, cure simply when equivalent quantities of the two components are in direct contact and the chemical reaction does not spread throughtout the mix as with catalytic resins, they are generally therefore only supplied as an injection system as this automatically dispenses the exact quantity of each component into the mixing nozzle ensuring a through controlled mix has taken place prior to injection.
Pure epoxy resin is the only non-catalytic resin presently in use for chemical anchoring, Epoxy resins cure slower than catalytic resins, nevertheless they generally have excellent mechanical and adhesive properties permitting higher loading and a stronger bond; moreover epoxy is effectively 100% non shrink and is consequently more suitable for larger holes and underwater applications due to its water impervious nature.

The advantages of chemical anchoring

When compared with steel expansion anchors, chemical anchors offer a significantly stonger bond and hence higher loadings per anchors can be attained on an equivalent size basis. This is mainly because of a single point expansion anchor that relies on a friction hold to the drill hole wall from an expanding sleeve within the bolt. In general this expanding sleeve may only represent a quarter or a third of the bolt length in the drill hole whereas a chemical anchor forms a permanent bond between the fixing element and base material for the full length of the installed anchor with the resin usually being stronger than the base material itself.

Description :

The chemical anchor CAS is a chisel ended anchor for use with any of our injection systems and glass capsules in masonry and concrete. On installation the stud becomes chemically bonded to the base material. Notably the fixing method imposes no expansion stress on the base material and is ideal for shock or vibratory loading and for softer or low density building materials where expansion stresses would normally result in failure. The method also gives exceptional performance for close centre and close to edge fixing. The nut may be removed and replaced without affecting the anchorage. The chemical anchor CAS is supplied complete with high tensile hex nut and plain washer in addition to one external hex drive adapter in each box.
Installation - concrete and solid masonry

 Drill hole to correct diameter and depth, diamond cored drill holes should be roughened prior to installation.
 Clean drill hole thoroughly using wire brush / blow and remove all dust using a out pump or airline.
 Place the capsule in the drill hole ensuring fitting is below the surface.
 Attach the driver to the anchor stud, fit the drill and drive through the capsule until the stud reaches the base of the hole or the depth marker on the stud is reached.
 Detach the drive tool and leave stud undisturbed until cured and then attach fixture and torque to required setting.
 Insert clean fixing with a rotating motion until resin can be seen at the mouth of the hole, remove any excess immediately.
 Leave undisturbed until cured and then attach fixture and torque to required setting.

Installation








Notes :
 
1.  All grades shown for information
2.  M30 studding is 8.8 grade instead of 5.8 grade.
3.  M30 for A4-70 tensile strength of 500N/mm2, instead of 700N/mm2
4.  bSafety Factor is 1.25 for all carbon steel.
5.  Safety Factor is 1.56 for stainless steel, up to M24, M30 is 2.0
6.  Safety Factor is 1.5 for BSt 500 rebar
 
 
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