Laboratory evaluation of magnesium phosphate cement paste and mortar for rapid repair of cement concrete pavement

Li, Jiusu; Zhang, Wenbo; Yong, Cao

doi:10.1016/j.conbuildmat.2014.02.015

Cited by 131 publications

(33 citation statements)

References 14 publications

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“…MPC mortar at other M/P had the similar results. To increase the setting time, partial replacement with fly ash, ground granulated blastfurnace slag, or aluminate cement would be alternative to chemical admixture [15][16][17][18][19]. Notwithstanding, the time to set seems still very short, ranging from 16.74 to 34.12 min.…”

Section: Mechanical Properties Of Mpcmentioning

confidence: 99%

“…The flexural bond strength of MPC was 1.7 MPa while control mortar achieved only 1.2 MPa. Li et al [17] also investigated the tensile and flexural bond strength found using other type of phosphate such as diammonium phosphate ((NH 4 ) 2 HPO 4 ) and disodium hydrogen phosphate (Na 2 HPO 4 ⋅12H 2 O) and had almost doubled the higher strength in flexural strength when diammonium phosphate was used, which does not, however, seem suitable due to its environmental issues.…”

Section: Mechanical Properties Of Mpcmentioning

confidence: 99%

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Fundamental Properties of Magnesium Phosphate Cement Mortar for Rapid Repair of Concrete

Park

Kim

Ann

2016

Advances in Materials Science and Engineering

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Fundamental properties of magnesium phosphate cement (MPC) were investigated in this paper. The setting time and compressive and bond (i.e., flexural and tensile bond) strengths were measured to assess the applicability, and hydration product was detected by the X-ray diffraction. The specimens were manufactured with magnesia and potassium dihydrogen phosphate (K 2 HPO 4 ) was added to activate hydration process. The Borax (Na 2 B 4 O 7 ⋅10H 2 O) was used as a retarder to mitigate overwhelming rapid hardening. Mercury intrusion porosimetry was used to examine the pore structure of MPC mortar, and simultaneously rapid chloride penetration test was performed. As a result, the compressive strength of MPC mortar was mostly achieved within 12 hours; in particular, the MPC mortar at 4.0 of M/P ranked the highest value accounting for 30.0 MPa. When it comes to tensile and flexural bond to old substrate in mortar patching, the MPS had the higher tensile and flexural strengths, accounting for 1.9 and 1.7 MPa, respectively, compared to OPC mortar patching. Unlike Portland cement mortar, the MPC mortar contained mainly air void rather than capillary pores in the pore distribution. Presumably due to reduced capillary pore in the MPC, the MPC indicated lower penetrability in the chloride penetration test.

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Section: Mechanical Properties Of Mpcmentioning

confidence: 99%

Section: Mechanical Properties Of Mpcmentioning

confidence: 99%

Fundamental Properties of Magnesium Phosphate Cement Mortar for Rapid Repair of Concrete

Park

Kim

Ann

2016

Advances in Materials Science and Engineering

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“…Most researchers focused on chemical composition, mechanical properties, microstructure and durability of MPC concrete [2][3][4][5][6][7]. However, the corrosion of reinforced MPC concrete beam is a big challenge for engineering applications.…”

Section: Introductionmentioning

confidence: 99%

Performance investigations of reinforced magnesium phosphate concrete beams under accelerated corrosion conditions by multi techniques

Pei

Zhang

et al. 2015

Construction and Building Materials

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“…Borax and fly ash can be added as effective retarders to concrete pavements but with limited extension for the time of setting, whereas a big amount of aluminate cement can significantly delay the time of setting, and it also reduces strength [7], but fly ash significantly increases the workability of the concrete [8].…”

Section: Introductionmentioning

confidence: 99%

“…The scientists [5][6][7][8] studied how the strength of concrete used to manufacture the elements for the improvement of surroundings changes by adding some fly ash and other waste to their composition. Compressive strength decreases when increasing fly ash replacement ratio for each series.…”

Section: Introductionmentioning

confidence: 99%

The Dependence of Physical Mechanical Properties of Concrete Pavement Blocks on Coarse Aggregate Type

Malaiškienė¹,

Šemelis²,

Girskas³

et al. 2014

Construction Science

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-The aim of this research is to determine the dependences of the physical mechanical properties of vibropressed concrete (pavement blocks) on the type of coarse aggregate used in the main layer. Sustainability of concrete pavement blocks is a really important matter. Five different batches of pavement blocks were produced, changing the consistence ratio of coarse aggregate in the main layer. There are two types of course aggregate: crushed gravel and granite. The consistence of a facing layer was not changed. All tests: density, tensile split strength, water absorption for vibro-pressed concrete units were made according to EN 1338:2003+AC2006.

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Laboratory evaluation of magnesium phosphate cement paste and mortar for rapid repair of cement concrete pavement

Cited by 131 publications

References 14 publications

Fundamental Properties of Magnesium Phosphate Cement Mortar for Rapid Repair of Concrete

Fundamental Properties of Magnesium Phosphate Cement Mortar for Rapid Repair of Concrete

Performance investigations of reinforced magnesium phosphate concrete beams under accelerated corrosion conditions by multi techniques

The Dependence of Physical Mechanical Properties of Concrete Pavement Blocks on Coarse Aggregate Type

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