Which of the following is a typical application of CLSM?

Which of the following is a typical application of CLSM?

• A. Backfilling
• B. Decorative paving
• C. Structural load-bearing foundations in high-rise buildings
• D. Surfacing topsoil

Answer: (A)

The main idea is that CLSM is used for backfilling operations. Controlled Low Strength Material is a flowable, cementitious mix designed to be placed easily and to gain sufficient, but low, strength so it can be excavated again if needed. This makes it ideal for backfilling around pipes, trenches, and other utilities, where you want a fill that settles smoothly, supports the surrounding structure, and can be removed or opened for access later without heavy, costly removal work. It provides a stable, workable fill that doesn’t require the vibration and compaction often needed with traditional concrete, and it flows into irregular spaces and around obstacles. Decorative paving requires a hard, durable surface and precise finish that CLSM doesn’t provide. Structural load-bearing foundations in high-rise buildings demand high-strength concrete capable of carrying heavy loads, which CLSM is not designed to withstand. Surfacing topsoil is about organic soil material for vegetation, not a cementitious backfill, so CLSM isn’t used there either.

The main idea is that CLSM is used for backfilling operations. Controlled Low Strength Material is a flowable, cementitious mix designed to be placed easily and to gain sufficient, but low, strength so it can be excavated again if needed. This makes it ideal for backfilling around pipes, trenches, and other utilities, where you want a fill that settles smoothly, supports the surrounding structure, and can be removed or opened for access later without heavy, costly removal work. It provides a stable, workable fill that doesn’t require the vibration and compaction often needed with traditional concrete, and it flows into irregular spaces and around obstacles.

Decorative paving requires a hard, durable surface and precise finish that CLSM doesn’t provide. Structural load-bearing foundations in high-rise buildings demand high-strength concrete capable of carrying heavy loads, which CLSM is not designed to withstand. Surfacing topsoil is about organic soil material for vegetation, not a cementitious backfill, so CLSM isn’t used there either.