Proposed alternative reinforced concrete pipe culverts with nylon fibers
Date of Publication
2008
Document Type
Bachelor's Thesis
Degree Name
Bachelor of Science in Civil Engineering with Specialization in Structural Engineering
Subject Categories
Civil Engineering | Structural Engineering
College
Gokongwei College of Engineering
Department/Unit
Civil Engineering
Thesis Adviser
Bernardo Lejano
Defense Panel Chair
Andres Oreta
Defense Panel Member
Jonathan Dungca
Danilo Terante
Abstract/Summary
The DPWH specifies ASTM Class 2 Standard RC Pipes to be used in the country. For a 610-mm diameter pipe, the standard design for ASTM uses 7 hoops of steel as its main reinforcing bars. However, some manufacturers are proposing to reduce the number of steel hoops in concrete pipes in order to save money. This produces weaker strengths of concrete pipes than the standard design specified by the DPWH.
In order to attain the strength of the ASTM Concrete Pipes using only 5 hoops of steel, nylon fibers were added to the concrete mixture as additional reinforcement.
This research paper tests whether adding nylon fibers to concrete pipes with only 5 hoops of steel reinforcement can reach the strength of the ASTM RC Pipes with 7 hoops of steel. This paper also investigates the effects of adding nylon fibers to concrete in terms of its compressive and tensile strengths.
Our tests show that adding nylon fibers to the dry concrete mixture increases the strength of the concrete in terms o compression and tension. For the wet concrete mixture, which is the typical mixture for RC pipes, adding nylon fibers decreases the compressive strength of the concrete.
In the case of the concrete pipes, adding nylon fibers to the RC pipes with 5 hoops increases its strength, but it still cannot reach the strength of the ASTM RC pipes with 7 hoops of steel.
Using the ASTM standards for the construction of concrete pipes is still the best way to go, despite the expenses. The safety of the public must be our number one priority, not money.
Abstract Format
html
Language
English
Format
Accession Number
TU19736
Shelf Location
Archives, The Learning Commons, 12F, Henry Sy Sr. Hall
Physical Description
67 leaves, 28 cm.
Keywords
Pipe, Concrete--Testing; Fiber-reinforced concrete--Testing
Recommended Citation
Bellosillo, P. S., & Manuel, J. C. (2008). Proposed alternative reinforced concrete pipe culverts with nylon fibers. Retrieved from https://animorepository.dlsu.edu.ph/etd_bachelors/5382
Embargo Period
4-25-2021
