Acid Attack Resistance of Magnesium Phosphate Cement

Zhu Ding; Meng Xi Dai; Can Lu; Ming Jie Zhang; Peng Cui

doi:10.4028/www.scientific.net/KEM.680.392

Paper Titles

Methods for Inhibition of Fluidity Loss of Concrete Mixed with Superplasticizers
p.370

Ultrasonic Prediction of 28-Day Compressive Strength of Crumb Rubber Concrete during early Age
p.378

The Study of Trial-Mix Strength Calculation Equation of C60 Concrete under Certain Steam Curing Schedule
p.382

ERT Imaging of Graphite Electrically Conductive Concrete
p.388

Acid Attack Resistance of Magnesium Phosphate Cement
p.392

The Effect of Sample Storage and Inspection Equipment on the Rheological Property of Oil Well Cement
p.398

Chloride Ion Erosion in Concrete under Sustained Axial Pressure
p.402

Influence of Environmental Humidity and Test Depth on the Measured Gas Permeability of Concrete
p.406

Effect of Low Content of Metakaolin Addition on the Properties and Pore Structure of Concrete
p.411

HomeKey Engineering MaterialsKey Engineering Materials Vol. 680Acid Attack Resistance of Magnesium Phosphate...

Acid Attack Resistance of Magnesium Phosphate Cement

Abstract:

Magnesium phosphate cements (MPC) had been used as repair materials for deteriorated Portland cement concrete structures. In this paper a new MPC was prepared and the basic properties including workability and compressive strength were tested. The acid attack resistance of MPC was investigated by immersing the MPC mortars in solutions at pH 3, 5, and 7, for 14d, 28d and 60d respectively. The compressive strength of MPC mortars after acid attack was tested and the microstructure of MPC were examined. The results showed that the compressive strength of MPC decreased after immersion in acid solution for 14d and 28d, however the strength of MPC with suitable materials mixture can recovered again after 60d immersion. The results indicated MPC has high acid attack resistance in static acid solution. The behavior of MPC in flowing acid solutions is need to be studied further.