Mix Design and Specifications for Cement-Stabilized Bases

Soil-cement is a highly compacted mixture of soil, cement, and water. Two types of soil-cement called cement-treated base (CTB) and full-depth reclamation (FDR) are widely used as a pavement base for highways, streets, parking areas, airports, shoulders, and materials-handling and storage areas. Greater strength and durability combined with low initial cost are some of the advantages soil-cement has over other types of base material.

The “soil” material in soil-cement can be almost any combination of sand, silt, clay, gravel, or crushed stone. In addition a wide variety of waste materials including fly ash, foundry sands, and screenings from quarries, can all be utilized as soil material. Failed asphalt pavements and granular bases, can also be reclaimed to make great soil-cement.

Before construction begins, simple laboratory tests establish the cement content, compaction, and water requirements of the material to be used. During construction, tests are made to verify that the requirements are being met. Testing ensures that the mixture will have strength and long-term durability.

The cost of soil-cement compares favorably with that of granular-base pavement. Economy is achieved through the use or reuse of in-place or nearby borrow materials. No costly hauling of expensive, granular-base materials are required; thus both energy and materials are conserved.

This webinar will discuss the applications, benefits, material requirements, mix design, and construction specifications of both CTB and FDR pavements.

Program features:

• PDF copy of presentation
• Free PDF of PCA Guide to Cement-Treated Base (CTB) ($25 list price)
• Free PDF of PCA Guide to Full-Depth Reclamation (FDR) ($25 list price)
• One (1) Professional Development Hour (PDH) for webinar participants

The cost of this one-hour Webinar is $60.

(There is a $30 discount for PCA members; government officials (.gov); students and educators(.edu). Please call customer service after you register at 800.868.6733 or email CustomerService@Cement.Org to get your discount.)