text: Yo, listen up, I got knowledge to drop,
  Sustainable development, it's time to make it pop.
  We need materials that are friendly to the Earth,
  Low-carbon, energy-intensive, that's their worth.
  
  Glass waste, homie, let's put it to use,
  Instead of fine aggregate, let's make a truce.
  Glass cullet, recycled, post-consumer, no joke,
  Bottles, food packaging, medicine, and more, that's the scope.
  
  In this experiment, we tested it out,
  Four different glass cullet contents, no doubt.
  5, 10, 15, and 20 percent, that's the deal,
  Let's see how it affects the mortar's appeal.
  
  We checked the compressive, flexural, and tensile strengths,
  Modulus of elasticity and Poisson coefficient, no pretense.
  Adding glass sand aggregate, it's a game-changer,
  Boosting mechanical properties, no danger.
  
  Split tensile strength, it didn't change much,
  But the others showed improvement as such.
  This effect, my friend, it's rarely seen,
  Glass sand aggregate, a sustainable dream.
  
  And as we increased the glass sand aggregate,
  The density of the mortar took a slight dip.
  We observed the relationships, they were clear,
  Glass sand aggregate, it's the future we revere.