Asphalt composition and method for testing, selecting and adding oil contaminated soil to asphalt for road construction
OwnerEsra Eisa Abdulwahab Aleisa, Lubna Abdulaziz Khaled Aljenai +1inventors
InventorsEsra Eisa Abdulwahab Aleisa, Lubna Abdulaziz Khaled Aljenai, Dalal Taleb Hussain Ali Jeraq
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Abstract
A method for recycling oil contaminated soil is disclosed as well as a method for testing and selecting soil and adding the oil contaminated soil to the asphalt used in road construction. The oil contaminated soil has a saturation of oil between about 2% and 4%. The demoisturizing of soil was done prior to conducting a sieve analysis and obtained the percentage of oil contamination in the soil. After testing, the oil contaminated soil is used as a replacement for up to 50% of the mineral aggregates used in asphalt concrete for road construction.
Claims10
A method for testing, selecting and adding oil contaminated soil to asphalt for use in road construction, said method comprising the steps of:
- a. providing a mass of oil contaminated soil having a saturation of oil ranging between 2% and 4%, selecting a sample of said soil and demoisturizing said selected sample and cleaning said sample with hot toluene;
- b. conducting a sieve analysis by placing said sample in a shaker and determining the aggregate grain size of said oil contaminated soil;
- c. determining the specific gravity of said oil contaminated soil;
- and
- d. selecting the said oil contaminated soil as a partial replacement for aggregates in asphalt concrete and adding said oil contaminated soil to said asphalt and wherein between 30 and 50% of aggregate is replaced with said oil contaminated soil.
The method for testing, selecting and adding oil contaminated sand to asphalt for use in road construction, said method consisting of the following steps:
- a. providing a mass of oil contaminated sand having a saturation of oil ranging between 2% and 4%, selecting a sample of said oil contaminated sand and demoisturizing said selected sample by heating at 175° C. to 190° C. for about 24 hours;
- b. cleaning said demoisturized sample from step a with hot toluene under vigorous agitation after heating at 175° C. to 190° C. for 24 hours then cleaned at 40° C. for 30 minutes;
- c. subjecting the demoisturized and cleaned sample to a sieve analysis and determine that the mineral aggregate particles are between 4.5 mm and less than 75 μm;
- and
- d. selecting said oil contaminated soil as a partial replacement for aggregate in asphalt concrete and adding said oil contaminated soil to said asphalt and wherein between 30% and 50% of aggregate is replaced with said oil contaminated soil.
A method for recycling oil contaminated soil as a partial replacement for aggregate in asphalt concrete, said method consisting of:
- a. obtaining a mass of oil contaminated soil having a saturation of oil ranging between 2% and 4%, selecting a sample of said soil and demoisturizing said selected sample by heating at 175° C. to 190° C. and cleaning said selected sample with hot toluene at 40° C. for about 30 minutes;
- b. conducting a sieve analysis of said demoisturized and cleaned sample from step a to determine that the grain size of said demoisturized and cleaned sample is between 4.75 mm to about 75 mm and wherein the specific gravity is between 2.4 and 2.28;
- c. if the selected sample meets the criteria of step b, demoisturizing the mass of oil contaminated soil by heating at 175° C. and 190° C. for 24 hours and cleaning with hot toluene at a temperature of 40° C. for about 30 minutes;
- and
- d. selecting said oil contaminated soil as a partial replacement for aggregate in asphalt concrete and adding said oil contaminated soil to said asphalt and wherein between 30% and 50% of aggregate is replaced with said oil contaminated soil.
Dependencies are inferred from the claim text.