"Extensive Characterization of Bamboo with Different Binders as Alternative Materials for Concrete Products"
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"Extensive Characterization of Bamboo with Different Binders as Alternative Materials for Concrete Products"
- 1. “Extensive Characterization of Bamboo with Different Binders as Alternative Materials for Concrete Products”: A Thesis Proposal Paul N. Jacob* and Prof.Maria Natalia R. Dimaano, Ph.D. The Graduate School, University of Santo Tomas *M.Sc. In Management Engineering candidate
- 2. I. Introduction Problem Rationale Objective of the Study Significance of the Study Research Paradigm II. Materials and Methods Schematic Workflow Sample preparation and component combinations Property Determination Design of Bamboo Reinforced Concrete Beam III. Results and Discussion Material Characterization Chemical Property Analysis Mechanical Properties Bamboo Tensile Test Bamboo Pullout Test Compression Test Bamboo Reinforced Concrete Beam Product Flexural Test IV. Conclusion and Recommendation
- 5. 1.) Explore the possibilities of using different alternative materials to produce a more economical concrete product. 2.) Achieve a concrete strength of 2500psi – 3000psi similar to Class A mixture. Part I
- 6. Class Proportioning (Cement:Sand:Gravel) Probable compressive strength in psi (pounds per sq.inch) AA 1 : 1 ⅟2 : 3 3,500 - 4,000 psi A 1:2:4 2,500 - 3,000 psi B 1 : 2 ⅟2 : 5 1,500 - 2,000 psi C 1:3:6 D 1 : 3 ⅟2 : 7 500 - 1,000 psi less 500 psi Application / purpose Water tanks, shells & folded plates, for other water retaining structures High structural strength grade concrete for reinforced walls, slender reinforced columns, fence columns, heavy duty floors Commonly used for reinforced concrete works like beam, columns, slabs, reinforced roads, walls Foundations, walls, normal static loads, exposed Footings for domestic buildings and walls Piers, abutments, concrete walls, floors, normal static load, no rebar, not exposed Normal static loads, no rebars, not exposed source: Fig. 5-6 table of Concrete proportion, page DD500-125 structural design code data handbook Part I
- 7. I. Maximize the usage of agricultural by-products : Rice Husks, Saw dust II. Cost Saving impact. III. Encourage future researchers. Part I
- 8. - Execute testing to simulate the external loading using 3 types of mixtures to achieve comparative results in terms strength, applicability and economic value. The experiment excludes: a. The testing of exposing the alternative concrete products to different weather conditions like rain and extreme heat. b. The loading test such as cyclic loads, wind load and lateral loads. Part I
- 9. Part I
- 10. Part II
- 11. Bamboo Carbonized Rice Husk (CRH) Saw Dust Ash (SDA) Polypropylene String (PPS) Part II
- 12. 3 Types of Design Mixtures Used: (CRH + OPC ) + Bamboo + Sand + Gravel (SDA + OPC ) + Bamboo + Sand + Gravel (PPS + OPC) + Bamboo + Sand + Gravel
- 13. Control Class A mixture (1:2:4) By Weight Test Mix Plain Conc. Cement Sand 10 Kls 20 kls Gravel 40 Kls WaterCement Water Ratio 7.75 Kls 0.775 CRH Carbonized Rice Husk Class A mixture (1:2:4) By Weight Test Mix 30% CRH 20% CRH 10% CRH RHA 3 kls 2 kls 1 kl Cement 7 kls 8 kls 9 Kls Sand 20 kls 20 kls 20 kls Gravel 40 Kls 40 Kls 40 Kls WaterCement Water Ratio 6.75 kls 0.9643 8 kls 1 6 Kls 0.6667 SDA Saw Dust Ash Class A mixture (1:2:4) By Weight Test Mix 30% SDA 20% SDA 10% SDA SDA 3 kls 2 kls 1 kl. Cement 7 Kls 8 kls 9 Kls Sand 20 kls 20 kls 20 kls Gravel 40 Kls 40 Kls 40 Kls Water 9.4 kls 8 kls 6 Kls WaterCement Ratio 1.3429 1 0.6667 PPS Class A mixture (1:2:4) By Weight Test Mix 5% PPS 3% PPS 1% PPS PPS .5 Kls .3 Kls .1 Kls PPS Cement 10 Kls 10 Kls 10 Kls Sand 20 kls 20 kls 20 kls Gravel 40 Kls 40 Kls 40 Kls WaterCement Water Ratio 10 1 8 0.8 7 0.7 Part II
- 14. • Tensile Test •Compression Test • Pullout Test • Chemical Analysis Part II
- 15. 3-point Bending Scenario (ASTM C78) Cross sectional and elevation view showing the height, width and length of the Bamboo reinforced concrete beam. Part II
- 16. RHA Chemical Analysis Test Result Silica (SiO2), % Bamboo Tensile Test Test Specimen SDA 95.2 65.2 Bamboo Pullout test Breaking Load in Tension (lbs.) Sample 1 with node 2535.84 Sample 2 with node 10030.98 Sample 2 w/o node Test Specimen Sample 1 Sample 2 Sample 3 Maximum tensile stress (lbs.) 5166.6 4407.8 6887.2 Mean (lbs.) 5487.2 4298.35 Sample 1 w/o node Mean (lbs.) 17681.22 3417 13856 Part III
- 18. Specimen Widt Depth Span h (in.)(in.) Length (in.) Maximum Modulus of Flexural Rupture Load (lbs) (psi) Control+Bamboo 6 6 17.75 5575 458 10% CRH+Bamboo 6 6 17.75 5328 438 10% SDA+Bamboo 6 6 17.75 4294 753 1% PPS+Bamboo 6 6 17.75 9959 818 Part III
- 19. Objective Conclusion Compressive Strength: Saw Dust Ash & Carbonized Rice Husk substituting in 30 %, 20% & 10% of Ordinary Portland Cement yield a lower compressive strength than a standard Class A mixture which contain 100% of Ordinary Portland Cement. Both substitutes fall into a Class C mixture wherein the compressive strength is 500psi-1000psi. Explore the possibilities of using Polypropylene Plastic String substituting in 5%, 3% & alternative Materials 1% of Ordinary Portland Cement yield a lower for concrete products compressive strength than a standard Class A mixture which contain 100% of Ordinary Portland Cement. This substitutes falls into a Class C mixture wherein the compressive strength is 500psi-1000psi. Pullout Resistance: Bamboo as a reinforcement failed to resist frictional forces . It created slippage when subjected to loading. Part IV
- 20. A 10% CRH and 10% SDA mixture can be used to structures such as concrete walls, slab-on-grade, aesthetic concrete structures, and to structures that do not require reinforcement. Applicability A Bamboo reinforcement combined with a 10% substitution of OPC with either CRH or SDA mixed in concrete, can be used to a non-load bearing structures only such as concrete walls, slab-ongrade, aesthetic concrete structures. A 30% replacement of cement with either CRH or SDA will equate to a 30% saving on cost of cement per bag. Economic Value Bamboo can replace steel bar as a reinforcement. However, its usage is limited to non-load bearing structures only. Part IV
- 21. 1. 2. Execute additional field and laboratory tests to assess the effectiveness of these alternative materials in combination with Ordinary Portland cement. Explore other methods to test the resistance of Bamboo against frictional forces in order to maximize its tensile property. Part IV
- 22. “Extensive Characterization of Bamboo with Different Binders as Alternative Materials for Concrete Products”: A Thesis Proposal