Construction chemicals approval letter

Written by Team Highway Correspondence

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Construction chemicals approval letter

Content Brief:

  • Construction Chemicals Approval Letter: This content relates to the Independent Engineer’s review observations on sources of construction chemicals proposed by the contractor or concessionaire. And, issuing or denying a permit for the proposed use of construction chemicals in highway construction work.
  • These observations are made by IE after the review of concessionaire’s submission. The submission contains the Source of construction chemicals, product manufacturing credentials, guarantees and warranties and test results of proposed chemical. These tests were conducted in-house by the contractor or a third-party test laboratory.
  • After the scrutiny, review and examinations notify the concessionaire through a letter about the IE findings and observations.
  • The following content includes various Construction chemicals approval or denial permits with site, cause, environmental and other specific review and conditions.

Construction chemicals approval letter

About Construction chemicals

Construction chemicals are chemical formulations used with masonry materials, cement, concrete or other  construction materials at the time of construction to hold the construction materials together. Construction chemicals basically include but are not limited to the following areas.

  • Concrete Admixtures
  • Waterproofing materials
  • Concrete Repair/ Grouts- Cementitious, Polymer modified
  • Industrial Flooring- Cementitious Dry shake, Polymer
  • Sealants- Polysulphides, Polyurethanes, Silicone
  • Bonding agents- SBR, Acrylic
  • Anchoring materials-Epoxy
  • Other related materials such as curing agents, Mould release agents, surface retarders, expansive agents, etc

Concrete Admixtures

  • Mineral Admixtures
  • Chemical admixtures

Mineral Admixture

  • Fly Ash
  • Silica Fume
  • GGBFS
  • Natural Pozzolans

Chemical Admixtures

Types of chemical Admixtures

  • Plasticizers
  • Super plasticizers
  • Air Entrainers
  • Waterproofing Admixtures
  • Anti washout Admixtures for underwater concreting
  • Shotcrete Admixtures
  • Pumping Aids
  • Light Weight Admixtures
  • Corrosion Inhibiting Admixtures
  • Viscosity Modifying Admixtures
  • Expansive Agents
  • Stabilizers/ Activators

Letters on various construction chemicals approval or denial permits

Construction chemicals Source approval letter:1

Review observations on source approval for Super Plasticizer and Curing Compound.

To

The Concessionaire

Subject: Source approval for Super Plasticizer and Curing Compound-reg

Dear Sir,

With reference to your submission related to the construction chemicals approval, we have reviewed the same and have received no objection to using the same from the following agencies:

Si.No Supply Agency. Super Plasticizer Curing Compound
1 SHALIMAR Strength of Construction Shaliplast-431 Shall curex
2 FOSROC Chemicals Cornplast SP430 Conplast SP430AR, Conplast P505 T

Concure WB

Subject to the following conditions:

  1. Manufacturer test certificates are required for each consignment of material.
  2. Third-party test certificates are required for each consignment of material.

This is for your information and necessary compliance.

Thanking you,

Construction chemicals Source approval letter:2

Review observations on source approval for Anti striping Agent

To

The Concessionaire

Subject: Anti striping Agent- Reg.

Dear Sir,

With reference to your above submission related to the Anti-striping agent, for our review, we have reviewed the same and would like to intimate you that, the following are our observations:-

  1. A demonstration should be arranged, before final review of the product.
  2. Details of projects, where these products were used (‘Zycosoil’) are to be submitted for our verification.

Thanking you

Construction chemicals Source approval letter:3

Denial the Request of Source Approval for Construction Chemicals

To

The Concessionaire

Subject: Denial the Request of Source Approval for Construction Chemicals.

Dear Sir,

With reference to your submission related to the source approval of Construction Chemicals from Black Cat Enterprises Pvt Ltd., we have reviewed the same and found that previously cleared 3 sources are more than enough.

So, please take it seriously, that in future we will not Accord any further clearances to any other company products as, we think those three sources are not having any constraint. Hence do not submit any other proposal in future.

This is for your information and necessary compliance.

Thanking you

Note to a visitor about the Construction chemicals approval letter

It is that a few important and mandatory aspects are only discussed herewith. Kindly note that the above review observations are considered examples. You may adopt the gist of the subject and change it to suit the current need. And before using this content in your letter drafting, you need to ensure the specific material, other aspects, etc.

Also Read the Road material Source approval letter.

Review observations on highway material source approval

You can find various sample draft formats for highway operation and maintenance.

Additionally, you can find various sample draft formats for highway construction.

FAQ’s Related to Construction chemicals approval letter

Team highway correspondence will update as and when the user or visitor raise a query regard.

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