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Letter of Transmittal


Building and Construction Authority
52 Jurong Gateway Road #11-01
Singapore 608550

Dear Sir/Madam,
Re: Proposal to Implement Self-Healing Bacteria Agent into Concrete
Enclosed for your kind consideration is a response toward the request for a proposal on developing solutions for an engineering problem in Singapore. The enclosed report has been prepared with the objective of implementing a self-healing bacteria agent into today’s concrete mix practices to heal cracks located in historical buildings.
This proposal explores the lack of self-healing properties in the concrete structures of historical buildings located in Singapore and discusses the mechanism of the self-healing bacteria agent, which consists of calcium lactate and a bacteria called “bacillus”. The benefits and limitations of our proposed solution are provided as well.
In conjunction with Singapore’s efforts to preserve its heritage, implementing a self-healing bacteria agent into concrete mix practices to heal cracks in historical buildings are of high importance. This implementation increases the longevity of such buildings for future generations to appreciate the art and the history of our historical buildings.
 Thank you for your time and consideration of the proposal.

Yours sincerely,
Moe Wai Yan Tun
On behalf of Apollo Concrete
CVE1281 Effective Communication
Singapore Institute of Technology

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