id	keyword
american_scientific_journal-5335	asphalt
american_scientific_journal-5335	temperature
american_scientific_journal-5335	mixtures
american_scientific_journal-5335	research
american_scientific_journal-5335	bending
american_scientific_journal-5335	aggregate
american_scientific_journal-5335	point
american_scientific_journal-5335	pavement
american_scientific_journal-5335	engineering
american_scientific_journal-5335	clay
american_scientific_journal-5335	strength
american_scientific_journal-5335	astm
american_scientific_journal-5335	test
american_scientific_journal-5335	journal
american_scientific_journal-5335	materials