Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Use of magnesia sand for optimal design of high performance magnesium potassium phosphate cement mortar
https://orcid.org/0000-0001-9904-7914
HighlightsMagnesia sand increased the M/P ratio of MKPC paste particularly at the ITZ.MKPC mortar with magnesia sand to replace quartz sand achieved a higher strength.High strength is due to the strong bonding capacity of paste/aggregate interface.Failure mode of this mortar was on-site traced by X-ray CT.Excellent volume stability of this mortar was confirmed.
AbstractMagnesium potassium phosphate cement (MKPC) mortar as a construction repair material has been studied and applied for several years. In this paper, reactive magnesia sand is employed to replace conventional inert quartz sand as the fine aggregate of MKPC mortar, to adjust the M/P (i.e. MgO-to-KH2PO4) molar ratio of cement paste during mortar formation, as well as to improve the mortar performance though strengthening the bonding capacity of the interfacial transition zone (ITZ) (i.e. the paste to aggregate interface). Experimental results showed that the compressive strength of the MKPC mortar with reactive magnesia sands could achieve a mean value of 36.65MPa at 12h, and outperformed about 27.30% than that with inert quartz sand at 28-day. The interfacial transition zone (ITZ) development in the MKPC mortar with magnesia sands was investigated using the on-site X-ray computed tomography (CT). The failure modes of specimens subjected to uniaxial compression were analyzed and visualized by means of image processing technique. In addition, the chemical interaction between the paste and the aggregate was theoretically and experimentally analyzed, explaining well the excellent volume stability of the MKPC mortar with reactive magnesia sands.
Use of magnesia sand for optimal design of high performance magnesium potassium phosphate cement mortar
https://orcid.org/0000-0001-9904-7914
HighlightsMagnesia sand increased the M/P ratio of MKPC paste particularly at the ITZ.MKPC mortar with magnesia sand to replace quartz sand achieved a higher strength.High strength is due to the strong bonding capacity of paste/aggregate interface.Failure mode of this mortar was on-site traced by X-ray CT.Excellent volume stability of this mortar was confirmed.
AbstractMagnesium potassium phosphate cement (MKPC) mortar as a construction repair material has been studied and applied for several years. In this paper, reactive magnesia sand is employed to replace conventional inert quartz sand as the fine aggregate of MKPC mortar, to adjust the M/P (i.e. MgO-to-KH2PO4) molar ratio of cement paste during mortar formation, as well as to improve the mortar performance though strengthening the bonding capacity of the interfacial transition zone (ITZ) (i.e. the paste to aggregate interface). Experimental results showed that the compressive strength of the MKPC mortar with reactive magnesia sands could achieve a mean value of 36.65MPa at 12h, and outperformed about 27.30% than that with inert quartz sand at 28-day. The interfacial transition zone (ITZ) development in the MKPC mortar with magnesia sands was investigated using the on-site X-ray computed tomography (CT). The failure modes of specimens subjected to uniaxial compression were analyzed and visualized by means of image processing technique. In addition, the chemical interaction between the paste and the aggregate was theoretically and experimentally analyzed, explaining well the excellent volume stability of the MKPC mortar with reactive magnesia sands.
Use of magnesia sand for optimal design of high performance magnesium potassium phosphate cement mortar
https://orcid.org/0000-0001-9904-7914
HighlightsMagnesia sand increased the M/P ratio of MKPC paste particularly at the ITZ.MKPC mortar with magnesia sand to replace quartz sand achieved a higher strength.High strength is due to the strong bonding capacity of paste/aggregate interface.Failure mode of this mortar was on-site traced by X-ray CT.Excellent volume stability of this mortar was confirmed.
AbstractMagnesium potassium phosphate cement (MKPC) mortar as a construction repair material has been studied and applied for several years. In this paper, reactive magnesia sand is employed to replace conventional inert quartz sand as the fine aggregate of MKPC mortar, to adjust the M/P (i.e. MgO-to-KH2PO4) molar ratio of cement paste during mortar formation, as well as to improve the mortar performance though strengthening the bonding capacity of the interfacial transition zone (ITZ) (i.e. the paste to aggregate interface). Experimental results showed that the compressive strength of the MKPC mortar with reactive magnesia sands could achieve a mean value of 36.65MPa at 12h, and outperformed about 27.30% than that with inert quartz sand at 28-day. The interfacial transition zone (ITZ) development in the MKPC mortar with magnesia sands was investigated using the on-site X-ray computed tomography (CT). The failure modes of specimens subjected to uniaxial compression were analyzed and visualized by means of image processing technique. In addition, the chemical interaction between the paste and the aggregate was theoretically and experimentally analyzed, explaining well the excellent volume stability of the MKPC mortar with reactive magnesia sands.
Use of magnesia sand for optimal design of high performance magnesium potassium phosphate cement mortar
Wang, Yan-Shuai (Autor:in) / Dai, Jian-Guo (Autor:in)
Construction and Building Materials ; 153 ; 385-392
10.07.2017
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| British Library Online Contents | 2017
| British Library Online Contents | 2017
High-performance potassium magnesium phosphate cement mortar and preparation method thereof
| Europäisches Patentamt | 2015
Study on improving interface bonding performance of magnesium potassium phosphate cement mortar
| DOAJ | 2021