Influence of water-to-cement ratio and curing period on pore structure of cement mortar

Chen, Xudong; Wu, Shenxin

doi:10.1016/j.conbuildmat.2012.09.058

Cited by 247 publications

(66 citation statements)

References 48 publications

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“…The intensity of occurrence of pores of this size also decreases. Similar observations concerning both cement pastes and mortars were presented by the authors of the publications [1,[31][32][33].…”

Section: Test Resultssupporting

confidence: 72%

Open porosity of cement pastes and their gas permeability

Tracz

2016

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. This paper presents the results of extensive research work on the open porosity and gas permeability of cement pastes. Tests were conducted on cement pastes with different water/cement ratios and types of cement. The three most popular cements in Poland from the CEM I, CEM II and CEM III groups were tested after the pastes had been cured for 90 days in laboratory conditions. The scope of experiments included the assessment of open porosity determined using three different methods: comparing the bulk and specific densities, mercury intrusion porosimetry and saturating the material with water. In addition, this article contains an analysis of the porosity characteristics based on the distributions produced by porosimetry examinations. Gas permeability was determined using the modified RILEM-Cembureau laboratory method. The results of the completed test allowed a quantitative determination to be made of the impact of water-cement ratio and type of cement used on open porosity assessed by various methods, and the influence of these parameters on the gas permeability of the paste. The quantitative changes in the content of capillary pores and meso-pores in the cement pastes analysed are also presented.

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Section: Test Resultssupporting

confidence: 72%

Open porosity of cement pastes and their gas permeability

Tracz

2016

Bulletin of the Polish Academy of Sciences Technical Sciences

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“…Hence a distinct influence of individual defects may be ignored in such a case, and then the mesoscopic element can be considered as a particle within a framework of continuous mechanics theory. To proceed in this way, we have the possibility of exploring the damaging (or failure) behavior of a concrete on the basis of the properties of those mesoscopic elements involved [59][60][61]. Therefore, if the defects existing in a concrete are considered to be randomly induced during the loading phase, then the damage or failure with respect to individual mesoscopic elements is also viewed to be random, more precisely, the strength level of mesoscopic elements may be stochastically distributed.…”

Section: Referencesmentioning

confidence: 99%

Experimental study and analytical formulation of mechanical behavior of concrete

Chen

Zhou

2013

Construction and Building Materials

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“…Performance and hydration microstructure of cement are affected by many factors, such as cement strength grade, watercement ratio, admixtures and temperature [6][7][8][9]. Especially the change of curing temperature may bring significant variations to hydration reactions.…”

Section: Introductionmentioning

confidence: 99%