Property characterization of concrete paving blocks using recycled concrete aggregates/ Bren Jousef T. Bayhon, Daniel G. Dela Cruz, Jeremiah O. Delgado, Kristine Cameron D. Felix, and Erries B. Galvez.--

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Bayhon, Bren Jousef T [author]

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Material type: Text

TextPublication details: Manila: Technological University of the Philippines, 2023.Description: xvi, 192pages: 29cmContent type:

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BTH TA 145 A46 2023

Dissertation note: College of Engineering.-- Bachelor of science in civil engineering: Technological University of the Philippines, 2023. Summary: Construction and demolition waste generation has increased over time as the world continues to develop, and an influx of waste has steadily filled up backfills which are left unused while it continues to degrade and pollute the surrounding environment. While studies have been done internationally about its potential usage as recycled material for concrete production, limited local studies have been done regarding this topic. Its application as a structural member is still experimental as it shows varying results as these wastes are from varying buildings or construction wastes. This study focused on the property characterization of recycled concrete aggregates (RCA) and the concrete paving blocks with RCA. The blocks were tested in accordance to the American Society for Testing and Materials (ASTM) specifications for compressive strength and water absorption. A beam obtained from the demolition of an elementary school in Novaliches, Quezon City was crushed into RCAs. The RCA was then utilized for full replacement of standard-coarse aggregates for the prepared design mixes. Different design mixes (Class AA, A, B, and C) and water-to-cement ratios (0.30, 0.40, 0.50) were used in the production of the concrete paving blocks. Physical and mechanical property test results showed the highest average compressive strength of 38.50 MPa which is below the required specified by ASTM C-936 Standard Specification for Solid Concrete Interlocking Paving Units and the highest water absorption rate of 3.50% which is standard for paving block applications which should be below 5%. Upon consideration of these test results, among the prepared design mixes, the most desirable design mix is the Class AA mix with the optimal water- to-cement ratio being 0.4.

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Holdings
Item type	Current library	Shelving location	Call number	Copy number	Status	Date due	Barcode
Bachelor's Thesis COE	TUP Manila Library	Thesis Section-2nd floor	BTH TA 145 B39 2023 (Browse shelf(Opens below))	c.1.	Not for loan		BTH0005814

Bachelor's thesis

College of Engineering.-- Bachelor of science in civil engineering: Technological University of the Philippines, 2023.

Includes bibliographic references and index.

Construction and demolition waste generation has increased over time as the world
continues to develop, and an influx of waste has steadily filled up backfills which are left
unused while it continues to degrade and pollute the surrounding environment. While
studies have been done internationally about its potential usage as recycled material for
concrete production, limited local studies have been done regarding this topic. Its
application as a structural member is still experimental as it shows varying results as these
wastes are from varying buildings or construction wastes. This study focused on the
property characterization of recycled concrete aggregates (RCA) and the concrete paving
blocks with RCA. The blocks were tested in accordance to the American Society for
Testing and Materials (ASTM) specifications for compressive strength and water
absorption. A beam obtained from the demolition of an elementary school in Novaliches,
Quezon City was crushed into RCAs. The RCA was then utilized for full replacement of
standard-coarse aggregates for the prepared design mixes. Different design mixes (Class
AA, A, B, and C) and water-to-cement ratios (0.30, 0.40, 0.50) were used in the production
of the concrete paving blocks. Physical and mechanical property test results showed the
highest average compressive strength of 38.50 MPa which is below the required specified
by ASTM C-936 Standard Specification for Solid Concrete Interlocking Paving Units and
the highest water absorption rate of 3.50% which is standard for paving block applications
which should be below 5%. Upon consideration of these test results, among the prepared

design mixes, the most desirable design mix is the Class AA mix with the optimal water-
to-cement ratio being 0.4.

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