Polystyrene foam (Styrofoam) as supplementary coarse aggregate for lightweight concrete / by Rachel June A. Dagasdas and Starlet S. Sibayan.
Material type:
TextLanguage: English Publication details: Indang, Cavite : 2009. Cavite State University- Main Campus,Description: xx, 86 pages : illustrations ; 28 cmContent type: - text
- unmediated
- volume
- 624.1834 D13 2009
- College of Engineering and Information Technology (CEIT)
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Ladislao N. Diwa Memorial Library Theses Section | Non-fiction | 624.1834 D13 2009 (Browse shelf(Opens below)) | Link to resource | Room use only | DP-3970 | 00007669 |
Design Project (BS Civil Engineering) Cavite State University
Includes bibliographical references.
College of Engineering and Information Technology (CEIT)
Dagasdas, Rachel June Aparicio and Sibayan, Starlet Sidamon. Polystyrene (Styrofoam) as Supplementary Coarse Aggregate for Lightweight Concrete. Undergraduate Thesis. Bachelor of Science in Civil Engineering. Cavite State University, Indang, Cavite. April 2008. Thesis Adviser: Roslyn A. Pena.
The study was conducted at the Cavite State University, Indang, Cavite and Cavite Testing Center, Imus, Cavite from December 2007 to February 2008. The study aimed to determine the compressive and flexural strength of the concrete with styrofoam
as aggregates at 7th, 14th and 28th days, determine if styrofoam, as supplementary
aggregates, can be utilized to produce lightweight concrete and determine the economical mixture of concrete using styrofoam as partial substitute for aggregate. The styrofoam was cut into % inch in size. Five trial mixes for compression and flexural concrete samples were tested for the weight, compressive, and flexural tests. The trial mixes were 100%gravel - 0%styrofoam, 75%gravel - 25%styrofoam, 50%gravel - 50%styrofoam, 25%gravel -75%styrofoam, and 0%gravel - 100%styrofoam. Styrofoam was proved to be lightweight aggregate based on the unit weight test of materials. The weight of the concrete samples were decreasing as amount of styrofoam was increasing. Concrete samples with 0%gravel - 100%styrofoam was the lightest. The presence of styrofoam in the mixtures provided a lightweight concrete from 50%gravel - 50%styrofoam to 0%gravel - 100%styrofoam, wherein 50 - 50 mixture was fell under structural lightweight concrete type for compression specimen. For flexural density, 50 - 50 and 25 - 75 mixtures passed as a lightweight concrete under structural lightweight concrete types.
Highest compressive strength was attained by control mix or the 100%gravel — 0%styrofoam on its 7th day of curing. For flexural, highest strength was attained by 75%gravel — 25%styrofoam on its 7th day of curing while the 50%gravel — 50%styrofoam gained the highest strength on its 28th day of curing. The 0%gravel — 100%styrofoam was the least cost mixture for both compression and flexural. The source of recyclable styrofoam is difficult because it is limited. Likewise, if commercially available styrofoam is used to provide as lightweight aggregate, it can be costly than using ordinary aggregate since no machine can do the production of cut styrofoam and only manual cutting can be the option. Least cost mixture with styrofoam and considered to be lightweight concrete at the same time was attained by 50%gravel - 50%styrofoam for compression while 50 - 50 and 25 - 75 mixtures for flexural.
Submitted to the University Library 05-18-2009 DP-3970