Which of the following is NOT a benefit of using CLSM?

The choice identifying high compressive strength as not a benefit of using Controlled Low Strength Material (CLSM) is accurate because CLSM is primarily designed for applications where strength is not the primary concern. CLSM typically has a compressive strength that is significantly lower than conventional concrete, which is intentional. Its main advantages lie in its ease of placement, low permeability, and improved insulation properties rather than high strength.

Understanding CLSM involves recognizing that it is formulated to flow easily and fill voids or excavations without the need for extensive compaction, which underscores the benefit of ease of placement. Additionally, low permeability is a desirable trait that helps in preventing moisture intrusion and enhances durability in certain applications. Its insulating properties also make it suitable for specific contexts, such as backfill applications where thermal insulation is valued.

In contrast, high compressive strength does not align with the typical uses for CLSM, as its intended applications usually do not require a high load-bearing capacity, thereby making it a distinct characteristic that does not resonate with the primary benefits of CLSM.