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Proper storage of bulk cement is critical to preserve its quality and prevent premature hydration. Whether dealing with bulk portland cement or specific mortar types like Type S masonry cement or Type N cement, the primary goal is to keep it absolutely dry.

Storage silos must be completely watertight and airtight. Any moisture ingress will cause the masonry cement to hydrate, forming lumps and leading to significant strength loss. This renders the material unusable for its intended purpose.

Furthermore, it is essential to have separate, clearly identified silos for different materials, such as Type S cement and other admixtures. This practice prevents cross-contamination and ensures the correct type of cement is loaded for each project, guaranteeing the specified performance and structural integrity of the masonry work.

While both masonry cement and mortar cement are used to create mortar, they are not interchangeable and are governed by different ASTM standards. The primary distinction lies in their performance requirements. Both are available as bulk cement, often containing bulk portland cement, and come in various types, such as Type S cement and Type N cement.

Mortar cement, specified by ASTM C1329, must meet higher bond strength requirements and has a lower allowable air content compared to masonry cement (ASTM C91). This composition gives mortar made with mortar cement superior adhesive and structural capabilities. For this reason, specifications for projects in high-wind or seismic regions, or for structurally critical masonry, will often require the use of mortar cement over a standard Type S masonry cement or Type N cement.

Handling deliveries of bulk Portland cement requires strict safety and quality control procedures. The bulk cement is typically delivered in pneumatic tankers and transferred into dedicated storage silos. Before offloading begins, the driver must verify that the silo’s protection and alarm systems are fully operational. This includes testing the high-level alarms, pressure gauges, and relief valves to prevent overfilling and dangerous pressurization.

Whether the delivery is for standard Portland cement or specific products like Type S masonry cement or Type N cement, these checks are critical. Once confirmed, the masonry cement is pneumatically conveyed into the appropriate, clearly marked silo. On-site, automated systems often move the Type S cement or other products from these main silos to smaller buffer silos for efficient use in production.

Choosing the correct masonry cement depends on the structural load and environmental exposure of the project.

For general, above-grade applications, Type N cement is the preferred choice. It offers good weather resistance and is widely used for residential construction, including brick veneers and exterior, non-load-bearing walls.

In contrast, Type S masonry cement is specified for projects requiring higher strength and durability, particularly in areas with significant moisture or soil pressure. The superior strength of Type S cement makes it essential for foundations, retaining walls, patios, and sewer applications. Both types of bulk cement, often derived from bulk portland cement, are formulated to provide the necessary performance for these distinct use cases, ensuring longevity and stability.