PUBLICATION NOTICE: Development of Magnesium Phosphate Cement (MPC) Concrete Mixture Proportioning for Airfield Pavements: Laboratory and Field Validation MPC Test Report

Link: http://dx.doi.org/10.21079/11681/35475

Report Number: ERDC/GSL TR-20-4

Title: Development of Magnesium Phosphate Cement (MPC) Concrete Mixture Proportioning for Airfield Pavements:

Laboratory and Field Validation MPC Test Report

By Monica A. Ramsey, Dylan A. Scott, Charles A. Weiss Jr., and Jeb S. Tingle

Approved for Public Release; Distribution is Unlimited February 2020

Abstract: Magnesium phosphate cements (MPCs) have been used in proprietary products for pavement repairs for over 30 years. However, these products generally are intended for small repair sections less than 0.5 ft³ due to high heat generations and short working times. The objective of this research was to develop optimal mixture proportions of MPCs for use in pavement applications. Materials used in this research included three types of magnesium oxide (MgO), one phosphate salt, two types of fly ash, a retarder, two course aggregate gradations, and one sand. From these materials, 24 mixture proportions were batched with variations including water content, retarder, and fly ash to determine the effects on physical and mechanical properties. Laboratory testing at various scales was conducted on a mixture consisting of a dead-burned MgO, potassium dihydrogen phosphate, Class C fly ash, boric acid, and local aggregates. Four variations were developed and commercially blended in bulk super sacks. These concrete mixtures met the workability, setting time, and strength requirements. A volumetric mixer was used to batch 2 yd³ field placements in test sections 8.5 ft wide x 8.5 ft long x 8 in. deep. This was noteworthy because no literature was discovered for MPC concrete placements at this large volume.

117 pages / 9 Mb

ERDC is a diverse research organization with approximately 2,000 employees operating more than $1 billion in world class facilities at seven laboratories. Its annual program exceeds $1 billion as it supports the Department of Defense and other agencies in military and civilian projects. Principal research areas include Soldier support, Engineered Resilient Systems, Environmental Quality and Installations, Geospatial Research and Engineering, Military Engineering, and Water Resources.  “Discover ▪ Develop ▪ Deliver” ERDCinfo@usace.army.mil

Contact

ERDC Library
601-634-2355
ERDCLibrary@ask-a-librarian.info