id	keyword
american_scientific_journal-5244	concrete
american_scientific_journal-5244	days
american_scientific_journal-5244	strength
american_scientific_journal-5244	compressive
american_scientific_journal-5244	figure
american_scientific_journal-5244	laterite
american_scientific_journal-5244	curing
american_scientific_journal-5244	water
american_scientific_journal-5244	engineering