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Evaluation of the Effect of Recycled Tire Rub
Name: Evaluation of the Effect of Recycled Tire Rub
File: holt paper 05-12-15 1B.pdf
Size(MB): 0.41MB
Extension: PDF
Event: 2015 ICSC - MIAMI
Speaker Name: Holt, D.
Managed by: sdickens
Date Uploaded: May 29, 2015; 2:05 pm
Download Count: 724
Downloads This Month: 724

Your Geographic Information:

Country: United States
State/Region: Texas
City: Houston
Zip Code: 77072
Area Code: 281
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Paper - "Concrete production consumes a considerable amount of natural resources that cannot be replaced or replenished. With landfills being created at an alarming rate compounded with the increased cost of disposal, the need for recycling has reached an all-time high. Of the various solid wastes, accumulated waste tires are of particular interest because of their non-biodegradable nature. This study will analyze the feasibility of the use of fine recycled tire rubber, which has a particle size ranging from 1mm to 4mm, as a fine aggregate in place of natural sand in concrete. Due to the unique mechanical properties of rubber, it is expected that the compressive strength and stiffness of concrete will decrease as the volume fraction of rubber increases. Another potential disadvantage of including recycled tire rubber is the increased water demand, as recycled tire rubber has higher moisture absorption than that of natural sand. However, lightweight, toughened concrete mixtures comprised of significant amounts of recycled materials should be beneficial for many applications. And with the huge amount of concrete consumed each year, incorporation of recycled tires could subsequently reduce the carbon footprint and conserve natural resources on an exponential scale.
In this study, concrete mixtures with various recycled tire rubber replacement levels (0, 15, 35, 50 and 100% by volume) of fine aggregate and different dosages of high-range water reducing agent were prepared. Fresh concrete properties, including slump and unit weight, and mechanical properties, including compressive strength, toughness and the modulus of elasticity, will be measured. Scanning Electron Microscopy (SEM) is to be used to evaluate the interface between rubber and cement paste, and Thermal Gravimetric Analysis (TGA) is to be used to determine the amount of moisture absorption and the decomposition temperature for the rubber."

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