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Objective of the Research
To determine which between CCA and RHA could be better used in the construction industry as a construction material
This study determined the mechanical properties of concrete specimen with Corn Cob Ash (CCA) and with Rice Husk Ash (RHA). Specifically, this study has:
1.1 Class A (1:2:3) with the corresponding weight of CCA
1.2 Class A (1:2:3) with the corresponding weight of RHA
Statement of the Problems
1. Mechanical Properties considered
2. Total number of Specimen
3. Molding of Specimen:
4. Curing Period at University Hydraulics Laboratory:
5. Class A Concrete (1:2:3)
6. The Percentage of Replacement
7. Compressive and Flexural Strength Test by UTM at NDDU Construction Materials Testing Laboratory
Scope and Delimitation
Method and Procedures
1 Sampling Method (AASHTO T2)
2 Reducing samples to testing size (by quartering)
3 Determining amount in weight of CCA and RHA
4 Preparation of concrete specimens
5 Testing for workability
6 Molding Process
7 Curing of concrete specimen
8 Standard Test Method for Compressive Strength of Cylindrical Specimens (ASTM C 39)
9 Flexural Tests (ASTM C 293 – Center-Point Loading Test Method)
One-way Analysis of Variance (ANOVA)
Tukey Method
Results
Discussion and Recommendations
Only mixtures of 5% and 10% Rice Husk Ash (RHA) and Corn Cob Ash (CCA) as replacement to Cement for Class A concrete mix reached the required Compressive Strength.
Nevertheless, Rice Husk Ash (RHA) and Corn Cob Ash (CCA) passed the strength requirement for Flexural.
The study chooses the use of concrete with CCA as an alternative construction material.
Fabricate multiple specimens
Make sure that the aggregates used for the specimen preparation does not vary over the change in weather
Use only homogenous ashes
Use varying water/cement ratio
Cap each cylindrical specimen before testing
Use other type of ash
Conduct a cost analysis
Consider the Chemical Effects
Develop efficient means of producing ashes in bigger volume.
Outline
Recommendations for future similar studies:
Figure 2
The Flexural Strengths
Figure 1
The Compressive Strengths
Adviser:
Engr. Shiela Jingle A. Soriño, CE, MA-EE
Researchers:
Janno Franco J. Pilapil, BS-Civil Engineering
Mark Jay B. Tadeje, BS-Civil Engineering
II.) Data Analysis
I.) Experimental Procedures