Question

Which of the below would increase the abrasive strength of concrete?

1) Low water-cement ratio
2) Steel - troweled surface
3) Harder aggregate
4) All of these

Answer 1

To increase the abrasive strength of concrete, using a low water-cement ratio, a steel-troweled surface, and harder aggregate would all be effective.

Step-by-step explanation:

To increase the abrasive strength of concrete, all of the options listed would be effective. A low water-cement ratio reduces the amount of water in the concrete mixture, resulting in a stronger and more durable substance. A steel-troweled surface helps to compact the concrete and make it smooth, which increases its resistance to abrasion. Finally, using harder aggregate in the concrete mixture provides additional strength and abrasion resistance.