Investigation of magnesium phosphate cement hydration in diluted suspension and its retardation by boric acid

Lahalle, Hugo; Coumes, C. Cau Dit; Mesbah, Adel; Lambertin, David; Cannes, Céline; Delpech, Sylvie; Gauffinet, Sandrine

doi:10.1016/j.cemconres.2016.04.010

Cited by 129 publications

(46 citation statements)

References 28 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%

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%

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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“…This phenomenon is due to the crystallization, which takes place on the cement matrix of mortars [34][35][36]. The crystallization effect is more noticeable on formulations without AEA because their porosity is lower as well as a higher densification of the mortar is allowed.…”

Section: Modulus Of Elasticitymentioning

confidence: 99%

Magnesium phosphate cements formulated with low grade magnesium oxide incorporating phase change materials for thermal energy storage

Maldonado-Alameda

Palacio

Giró-Paloma

et al. 2017

Construction and Building Materials

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“…Nevertheless, the MPC is a contemporary inorganic cementitious material is made by setting up the phosphate and dead utilized magnesia, through-arrangement acidbased reaction to create chemical bonding strength [14,15], Besides, it is superior correlated to (OPC) ordinary Portland cement, MPC has a different chemical reaction, and performance [16][17][18]. MPC has numerous beneficial properties, such as high strength, quick setting in an inhibited temperature condition (− 20 °C) without heat analysis, quick-setting and hardening (can be demolded within 30 min after casting), frost resistance, great holding quality with old concrete, a bit of drying shrinkage, low thermal development coefficient, good adhesive performance, great corrosion resistance, and fire resistance conduct [15,[19][20][21][22]. Due to its high early strength, MPC is used as repair or binders materials and widely applied in the rehabilitation works related to civil engineering infrastructural projects worldwide for a long time, such as airfield runways, bridges, highways, fixing harmed asphalts and 3D powder printing materials [18,19,[23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Utilization of Marble Powder and Magnesium Phosphate Cement for Improving the Engineering Characteristics of Soil

Rai

Pei

Meng

et al. 2020

Int. J. of Geosynth. and Ground Eng.

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In this study, the effects of waste marble powder and magnesium phosphate cement on the properties of soil were investigated. The incorporation of waste marble powder (MP) and (MPC) magnesium phosphate cement as a novel additive, lead the significant environmental and economic contributions in soil stabilization. The key properties of natural soil were extracted and several tests, such as specific gravity, Atterberg limits, sieve analysis, unconfined compression strength test, Direct shear box test, modified Proctor test, California bearing ratio, and Scanning electron microscopy test were performed on soil samples prepared with different percentages of MPC and MP, i.e. 0%, 2.5%, 5%, 7.5% and 0%, 5%, 10%, 15%, respectively. An unconfined strength test was used to obtain desired comprehensive strengths following 7, 14, 28 days of curing time. The overall experimental results revealed that MP and MPC can be added to enhance the stability of the soil. While usability and effectiveness of MPC and MP are cost-effective and eco-friendly as the substitution of natural soil for deep foundations.

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Investigation of magnesium phosphate cement hydration in diluted suspension and its retardation by boric acid

Cited by 129 publications

References 28 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

Magnesium phosphate cements formulated with low grade magnesium oxide incorporating phase change materials for thermal energy storage

Utilization of Marble Powder and Magnesium Phosphate Cement for Improving the Engineering Characteristics of Soil

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