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Title: Development of magnesium phosphate cement (MPC) concrete mixture proportioning for airfield pavements : laboratory and field validation MPC test report
Authors: Ramsey, Monica A.
Scott, Dylan A.
Weiss, Charles Arthur, 1961-
Tingle, Jeb S.
Keywords: Magnesium phosphate cement
Mixture proportioning
Runways (Aeronautics)--Maintenance and repair
Strength properties
Setting time
Magnesium phosphate
Repair of concrete
Military bases
Publisher: Geotechnical and Structures Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/GSL TR-20-4
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.
Description: Technical Report
Gov't Doc #: ERDC/GSL TR-20-4
Rights: Approved for Public Release; Distribution is Unlimited
Size: 117 pages / 9.066 Mb
Types of Materials: PDF/A
Appears in Collections:Technical Report

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