Mercury intrusion porosimetry of concrete aggregates

Kayyali, O.A.

doi:10.1007/bf02472913

Cited by 17 publications

(9 citation statements)

References 5 publications

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“…The pore size distribution was determined by the mercury intrusion porosimetry (MIP) method, which is a method commonly used to measure the pore size distribution in cement-based materials [29,46,47]. The surface tension of the mercury and the mercury density were 0.480 N/m and 13.546 g/ml, respectively, assuming a contact angle of 140°.…”

Section: Mercury Intrusion Porosimetry Testmentioning

confidence: 99%

“…It has been noted that the inkbottle pore has water retention characteristics, which block this pathway, thereby decreasing the continuity of the pores and blocking the transfer of CO 2 . The MIP method has been widely used until present; however, it is wellknown that mercury pressure porosimetry does not describe the actual pore structure [40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55]. Therefore, the size distribution of inkbottle type pores is analyzed by executing a second mercury cycle.…”

Section: Effects Of the Degree Of Frost Damage And The Pore Structurementioning

confidence: 99%

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Evaluation of the combined deterioration by freeze–thaw and carbonation of mortar incorporating BFS, limestone powder and calcium sulfate

Zhang

Kim

et al. 2017

Mater Struct

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The durability performance of cementitious material is traditionally based on assessing the effect of a single degradation process. However, this study investigates the coupled deterioration properties of mortar incorporating industrial solid wasteground granulated blast furnace slag (BFS) and different mineral admixtures, such as calcium sulfate (CS) and limestone powder (LSP). The combined deterioration properties caused by carbonation and frost damage in the mortar sample were experimentally investigated with respect to accelerated carbonation and freeze-thaw tests. Different degrees of deterioration, i.e. after subjected to 12, 30 and 60 freeze-thaw cycles, were induced in the freeze-thaw tests. The experimental investigation of single degradation revealed that the compressive strength, frost resistance and carbonation resistance decrease as the BFS replacement ratio increases by weight from 0 to 45%. The less amount of CH in the BFS cement leads to the carbonation progress more easily. Moreover, to achieve the same strength as ordinary Portland cement, 2 wt% CS and 4 wt% LSP in the BFS mortar are required. However, the data shows that incorporating LSP into the BFS mortar produces a lower frost resistance. The combined damage tests revealed that different deterioration degrees resulting from 12, 30 and 60 freeze-thaw cycles slightly decreased the carbonation resistance, which is related to the decrease in the inkbottle pore volume due to its water retention characteristics. Simultaneously, the pre-carbonation deterioration could effectively decrease the surface mass scaling of the freeze-thaw and the pore structure undergoes densification due to pre-carbonation.

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Section: Mercury Intrusion Porosimetry Testmentioning

confidence: 99%

Section: Effects Of the Degree Of Frost Damage And The Pore Structurementioning

confidence: 99%

Evaluation of the combined deterioration by freeze–thaw and carbonation of mortar incorporating BFS, limestone powder and calcium sulfate

Zhang

Kim

et al. 2017

Mater Struct

View full text Add to dashboard Cite

show abstract

“…The pore size distribution was determined via the mercury intrusion porosimetry (MIP) method, which is a typical means to measure the pore size distribution in cement-based materials [27][28][29][30], using an Autopore Master33 porosimeter, which was capable of pressures from 0 to 220 MPa. That is, pore sizes under 6 nm could not be measured using the MIP method.…”

Section: Pore Size Distributionmentioning

confidence: 99%

Drying shrinkage and microstructure characteristics of mortar incorporating ground granulated blast furnace slag and shrinkage reducing admixture

Zhang

Hama

2015

Construction and Building Materials

121

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“…In this study, data for two groups of dolomite mortars were used for calculation in the right hand side of Equation (7. A similar experiment was conducted by Kayyali [1985Kayyali [ , 1987 Figure 5 in their paper.…”

Section: Gd(ub)mentioning

confidence: 84%

Strength and Durability of Concrete: Effects of Cement Paste-Aggregate Interfaces, Part II: Significance of Transition Zones on Physical and Mechanical Propeties of Portland Cement Mortar

Lee¹,

Cohen²

1998

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Prepared in cooperation with the Indiana Department of Transportation and Federal Highway Administration. AbstractThis research was based on a two-part basic research investigation studying the effects of cement paste-aggregate interfaces (or interfacial transition zones-ITZ) on strength and durability of concrete. Part I dealt with the theoretical study and Part II dealt with the experimental.Part 1, the theoretical part, illustrates the effect of ITZ on the concrete properties by assuming its elastic moduli to be varied continuously in the region. A four-phase composite model is employed and three functions are chosen to model the moduli variation in the ITZ A theoretical solution for an n-layered spherical inclusion model is used to estimate the overall effective moduli of the modified four-phase model. The influence of material and geometric characteristics of the ITZ, as well as that of the aggregate on the overall effective moduli is investigated.The effects of three different moduli variations in ITZ on the overall moduli are compared. Their potential application is discussed. Finally, by comparing the prediction of the proposed models to a set of data on mortar, it is found that the elastic modulus at the interface is about 20-70% lower than that in the bulk paste for portland cement mortar, and 10-40% lower for silica fume mortar.Part E, the experimental part, illustrates the relationship between the ITZ microstructure and the mechanical properties of the concrete. The mechanical properties studied included the dynamic modulus of elasticity, dynamic shear modulus, logarithmic decrement of damping, flexural tensile strength, and compressive strength. In addition, the effects of changing the water-to-cementitious material ratio by mass, aggregate type, volume fraction of aggregate, and silica fume substitution, on these properties were investigated. A criterion based on water quantity and the specific surface area of aggregate by mass in a mixture was developed to eliminate biased date from the analysis process. This criterion was used to detect mixing and compaction problems that may have resulted in erroneous values of mechanical properties of specimen. In order to realize the compaction condition of the fresh mixture, an index of compaction (

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Mercury intrusion porosimetry of concrete aggregates

Cited by 17 publications

References 5 publications

Evaluation of the combined deterioration by freeze–thaw and carbonation of mortar incorporating BFS, limestone powder and calcium sulfate

Evaluation of the combined deterioration by freeze–thaw and carbonation of mortar incorporating BFS, limestone powder and calcium sulfate

Drying shrinkage and microstructure characteristics of mortar incorporating ground granulated blast furnace slag and shrinkage reducing admixture

Strength and Durability of Concrete: Effects of Cement Paste-Aggregate Interfaces, Part II: Significance of Transition Zones on Physical and Mechanical Propeties of Portland Cement Mortar

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