The role of brick pebbles and dust in conglomerates based on hydrated lime and crushed bricks

Baronio, G.; Binda, L.; Lombardini, Nora

doi:10.1016/s0950-0618(96)00031-1

Cited by 91 publications

(65 citation statements)

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“…This influence of grain size distribution of the aggregates shows an agreement with previous works [2,6].…”

Section: Influence Of the Aggregate Characteristicssupporting

confidence: 93%

“…In some previous papers, the type of aggregate has been established as a factor affecting strength [2,6]. A source of reactive silica (for example in volcanic or crushed ceramics aggregates) could react with the lime, producing CSH compounds in the interface that improve mortar strength.…”

Section: Influence Of the Aggregate Characteristicsmentioning

confidence: 99%

“…The addition of crushed ceramic aggregates is suitable in waterproofing requirement [2]. The effect of crushed brick or pozzolanic physicochemically active aggregates in order to improve the mortar's performance have also been extensively studied [6].…”

Section: Influence Of the Aggregate Characteristicsmentioning

confidence: 99%

“…The scarce literature about these mortars does not explain diverse questions. For example, the variation of compressive strength in the course of time: Degryse et al [2] state that modern copies of Roman lime mortars obtain most of their strength through carbonation after 28 days (as a function of the type of aggregate), but this idea conflicts with the knowledge of a very slow setting in these mortars [6].…”

Section: Introductionmentioning

confidence: 99%

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Masonry repair lime-based mortars: factors affecting the mechanical behavior

Lanas

Álvarez

2003

Cement and Concrete Research

340

159

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ABSTRACT:The increasing use of lime-based mortars for the restoration of historic buildings and structures justifies the research on these materials. The focus of this paper is the effect of technological variables on pore structure and mechanical properties of lime-based mortars. The influence of curing time, binder:aggregate ratio, aggregate attributes and porosity is discussed. Mortars prepared with aerial lime, varying aggregate types and binder:aggregate ratios ranging from (1:1) to (1:5) by volume were tested. Compressive and flexural strength measurements, as well as X-ray diffraction and thermal studies, were performed after 3, 7, 28, 91, 182 and 365 days. A strong increase in strength of mortar mixtures after 365 curing days (as compared to 28 curing days) is found. In spite of the fact that larger amounts of binder increase the total porosity, the strength of these mixtures is also increased. A good interlocked structure is obtained as binder contents increase. Also, higher porosities allow better portlandite carbonation. A relationship between mechanical properties and pore structure was established. However, in case of binder excess, the increase in voids leads to a strength reduction. The use of calcareous aggregates improves strength more as compared to the use of siliceous aggregates. Factors as grain size distribution and grain shape of the aggregates have also been considered.

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“…This influence of grain size distribution of the aggregates shows an agreement with previous works [2,6].…”

Section: Influence Of the Aggregate Characteristicssupporting

confidence: 93%

Section: Influence Of the Aggregate Characteristicsmentioning

confidence: 99%

Section: Influence Of the Aggregate Characteristicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Masonry repair lime-based mortars: factors affecting the mechanical behavior

Lanas

Álvarez

2003

Cement and Concrete Research

340

159

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“…Firstly, in agreement with previous works [30], the grain size distribution of the aggregates used affects the strength. An adequate grain size distribution ( Fig.…”

Section: Influence Of the Aggregate Characteristicssupporting

confidence: 90%

Mechanical properties of masonry repair dolomitic lime-based mortars

Lanas

Bernal

Bello

et al. 2006

Cement and Concrete Research

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180 different mortars made with a dolomitic lime and different aggregates were prepared in order to be used in restoration works. This paper focuses on the effect of technological variables on pore structure and mechanical properties of dolomitic lime-based mortars. Compressive and flexural strengths of the specimens were discussed according to curing time, binder:aggregate ratios, attributes of the aggregates and porosity, at long-term tests.A strong increase in the strength of mortars has been found after 365 curing days as compared to 28 curing days. The strength has been mainly attributed to the portlandite carbonation, because no significant changes have been observed in the brucite. However, higher strengths than similar aerial lime-based mortars led to think in other mechanism which increases the strength: the calcite formation through a reaction of dedolomitization (alkali carbonate reaction, ACR) and the brucite crystallization were discussed.The pore structure has presented a significant influence on the strength. More binder amounts mean more strength due to the higher values of open porosity, which allows the carbonation process. The aggregate characteristics have been correlated with the strength and porosity. Limestone and angle-shaped aggregates, reducing large pores, cause a strength increment.

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Limestone Provenance in Roman Lime‐Volcanic Ash Mortars from the Villa dei Quintili, Rome

et al. 2015

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Roman mortars were collected from the Villa dei Quintili in Rome, an archaeological site consisting of numerous edifices from nine construction phases dating from the 2nd century A.D. to modern times. A multianalytical approach was used on 34 mortar samples to infer the evolution of production techniques over time and to identify the source area of calcareous raw materials used in the preparation of the lime. Optical microscopy, scanning electron microscopy coupled with an energy-dispersive system, and laser ablation inductively coupled plasma mass spectrometry were used to study the samples. The major and trace element data were compared with the compositions of two types of limestone samples (Calcare Massiccio and Calcare Maiolica) collected from the Cornicolani Mountains. The results suggest that the technological practices and the calcareous raw materials used for lime production remained unchanged over the time period considered (2nd century A.D. to 3rd century A.D.). The compositions of lime-related particles in the mortars match those of Calcare Maiolica, which suggests its use as raw material for lime production. On the whole, the results are in agreement with data from existing literature regarding both the use by Roman builders of specific raw materials for the mortars' production and the relative supply area. C 2015 Wiley Periodicals, Inc.

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The role of brick pebbles and dust in conglomerates based on hydrated lime and crushed bricks

Cited by 91 publications

References 1 publication

Masonry repair lime-based mortars: factors affecting the mechanical behavior

Masonry repair lime-based mortars: factors affecting the mechanical behavior

Mechanical properties of masonry repair dolomitic lime-based mortars

Limestone Provenance in Roman Lime‐Volcanic Ash Mortars from the Villa dei Quintili, Rome

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