Final answer:
To make non-combustible materials more fire-resistive, you can treat them with fire-resistant chemicals or coatings.
Step-by-step explanation:
To make non-combustible materials more fire-resistive, you can treat them with fire-resistant chemicals or coatings. These chemicals or coatings can improve the fire resistance of the materials by reducing their flammability and slowing down the spread of fire. For example, fire-resistant paints and foams can be used to coat materials like steel to provide fire protection. Another method is the use of intumescent materials, which expand when exposed to heat or flames, forming an insulating barrier.