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Copy of Senior Project
Transcript of Copy of Senior Project
The construction boom led to increase
in the consumption of building materials
which in turn led to higher prices of these materials. The possibility of using recyclable materials in
construction by using the recyclable materials as a partial replacement for aggregates or cement in the concrete mix. The increase in the usage of materials has led to its huge presence as waste. Glass "Modern Glass and Al-Jubail Glass and Mirror “ Rubber
Concrete "Delmon Ready-mix and Site construction in NABIH SALEH" "Gulf Rubber Company and Bahrain Rubber Company" Recyclable Materials The Possibility of using the
as Partial Replacements
of cement and aggregate in the concrete mix Recyclable Materials Modern Glass “ and “ Al-Jubail Glass and Mirror “. Strongest Cheapest Our purpose is to get 1. Mix ingredients are calculated
2. Weigh the quantities of the materials
3. Use the rotary machine to mix the ingredients starting by the dry components 4. Measure the temperature of the mix and check its slump 5. Use the vibrator to compact the mix when it is pored into the cubes
( cubes used here are
100 x 100 mm, and for each mix six cubes have been prepared) 6. Label the samples 7. Record plastic density measurements 8. After the samples harden , put them in the water tub and leave them
for 7 days and 28 days for testing 1- Control mix “TM1835” 2- Mix with 20% of green glass as a partial replacement for fines
“TM1836” 3- Mix with 20% of clear glass as a partial replacement for fines
“TM1837” 4- Mix with 20% of blue glass as a partial replacement for fines
“TM1838” 5- Mix with 20% of combination of the glass as a partial replacement
for fines “TM1839” 6- Mix with 20 % of clear glass as a partial replacement for coarse (10mm) aggregates “TM1845” 7- Mix with 15% of grinded glass as a partial replacement for cement
“TM1850” 8- Mix with 15% of rubber tire powder as a partial replacement for
cement “TM1851” 9- Mix with 20% of shredded rubber tires as partial replacement for 10
mm coarse aggregates “TM1844” 10. Mix with 50% of old crushed concrete as a partial replacement for
coarse aggregate of 40 mm (TM1852). 11. Mix with 25% of old crushed concrete as a partial replacement for
coarse aggregate of 40 mm (TM1857). Compressive Strength Test Water Absorption test Water Absorption Test Compressive Strength Test Economical Comparing the cost of rubber tires, cement and aggregate we noticed that cement (1.8 BD per 50 kg) is much cheaper than the tire powder (10 BD per 44 kg) which is noticed also when we compare the aggregate (12.5 BD per ton) with shredded tire rubber ( 10 BD per 44 kg).The previous comments indicate that replacing the aggregate and cement in the concrete mixture by rubber tires is not economical . The cost of crushed old concrete is zero so using it as a partial
replacement for aggregate in the concrete mix is an economical choice
compared with the cost of the ordinary materials.
BD 12.500 per ton for RAS ALKHAIMA aggregate (or BD 15 per 1 m3) Glass Rubber Tires Old Concrete If you are considering to collect the glass from the recycle companies the cost of the glass will be zero
Another way is by collecting glass from glass companies you can collect the damaged glass or waste glass and it cost us around BD 5 to get 40kg of various color glass from Modern Glass Company. If you wish to buy glass you can buy 40kg of crushed glass for about BD 15 delivered to you location from Al-Jubail Glass and Mirror. when comparing the cost of the glass with the cost of the cement you can notice the difference that the glass has a much higher price. Although this choice might cost more but it is considered a good choice when taking the environment side into consideration and maybe in the future when construction companies starts using glass in their mixes the prices will be much closer. One advantage of the glass which might influence the choice whether to use ordinary ingredients or the glass is that the crushed glass can be used either as aggregate or cement. Consideration Compressive Strength Test Conclusion Old Concrete Elements
- Used as a partial replacement for aggregates only.
- Regarding economy and strength it is an excellent choice because the properties of the trial mixes were better than the control mix.
- Not the best choice regarding water absorption Glass
- Best option regarding strength and
- Bad choice regarding economy.
-It is better to use glass as a partial replacement
for aggregates rather than cement.
- Different colors give different properties. It is a very good idea to reuse materials again because it will be economical and will have benefits on the environment. We indulge people who liked our approach presented throughout this report to try implementing and developing it so that they can get even better results. We indulge people who liked our approach presented throughout this report to try implementing and developing it so that they can get even better results Further Work 1. Prepare reinforced beams trials.
2.Increase the percentage of glass and old concrete used to determine the maximum quantity to use as replacements.
3.More tests to apply on samples (such as tensile test).
4.Use normal glass instead of tempered
5. Using grinded old concrete as partial replacement of cement Pleased to answer your questions Rubber Tires
- Mixes with rubber tires had lower strength
compared with the control mix.
- It is better to use shredded tires as a partial
replacement for aggregates than tire powder because
it produces a stronger concrete mix.
- Not an economical choice compared with
the ordinary raw materials. Fatima Isa Qudrat 20082200
Fatima Khaled Mujeeran 20081751
Sara Mohammed Shaheen 20081524 References : 1.Concrete Technology, A.M Neville & J.J Brooks
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