Application of Zeolite Tuffs as Mineral Filler in Warm Mix Asphalt

Woszuk, Agnieszka; Wróbel, Michał; Franus, Wojciech

doi:10.3390/ma13010019

Cited by 25 publications

(9 citation statements)

References 32 publications

(43 reference statements)

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“…Therefore, controlling the stiffness of the designed asphalt mix is a factor that can prevent early defects of the surface. It is particularly important in the case of uncertain compaction process and adaptation of additives softening the asphalt binder [57][58][59].…”

Section: Stiffness Modulusmentioning

confidence: 99%

Laboratory Methods for Assessing the Influence of Improper Asphalt Mix Compaction on Its Performance

2020

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Compaction index is one of the most important technological parameters during asphalt pavement construction which may be negatively affected by wrong asphalt paving machine set, weather conditions, or the mix temperature. Presented laboratory study analyzes the asphalt mix properties in case of inappropriate compaction. The reference mix was designed for AC 11 S wearing layer (asphalt concrete for wearing layer with maximum grading of 11 mm). Asphalt mix samples used in the tests were prepared using Marshall device with the compaction energy of 2 × 20, 2 × 35, 2 × 50, and 2 × 75 blows as well as in a roller compactor where the slabs were compacted to various heights: 69.3 mm (+10% of nominal height), 66.2 mm (+5%), 63 mm (nominal), and 59.9 mm (−5%) which resulted in different compaction indexes. Afterwards the samples were cored from the slabs. Both Marshall samples and cores were tested for air void content, stiffness modulus in three temperatures, indirect tensile strength, and resistance to water and frost indicated by ITSR value. It was found that either insufficient or excessive level of compaction can cause negative effect on the road surface performance.

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Section: Stiffness Modulusmentioning

confidence: 99%

Laboratory Methods for Assessing the Influence of Improper Asphalt Mix Compaction on Its Performance

2020

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“…Furthermore, Heap et al [ 41 ] determined that the weathering of these monuments is caused by the presence of zeolite in the tuffs. Some recent studies [ 42 ] described the use of clinoptilolitic tuff as a foaming additive in asphalt technology, capable of replacing ordinary filler with positive results.…”

Section: Introductionmentioning

confidence: 99%

Altered Volcanic Tuffs from Los Frailes Caldera. A Study of Their Pozzolanic Properties

et al. 2021

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This work presents the results of the study of the physical, chemical, mineralogical and pozzolanic properties of the altered volcanic tuffs (AVT) that lie in the Los Frailes caldera, south of the Iberian Peninsula, and demonstrates their qualities as pozzolans for the manufacturing of mortars and pozzolanic cements of high mechanical strength. The main objective of this research is to show to what extent the AVTs can replace portland cement (PC) in mortars, with standardised proportions of 75:25% and 70:30% (PC-AVT). To achieve these objectives, three AVT samples were studied by a petrographic analysis of thin section (PATS), DRX, FRX and MEB. The pozzolanic properties were determined by three methods: electrical conductivity (ECT), chemical pozzolanicity tests (CPT) at 8 and 15 days and mechanical strength tests (MS) of the specimens at 2, 7, 28 and 90 days. Studies of a PATS, DRX, FRX and MEB showed that the AVT samples’ constitutions are complex where smectite (montmorillonite), mordenite, quartz, halloysite, illite, kaolinite, volcanic glass and lithic fragments coexist. The results of the ECT and CPT tests confirmed the pozzolanic properties of the samples analysed and proved an increase in mechanical strength from 2 to 90 days of testing.

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“…The uses of tuff as binder or aggregate in buildings materials has been studied by many researchers in the last decades. Some analyses have provided evidence of the pozzolanic properties of volcanic tuff [9] and the possibility for its use as an admixture in mortar or concrete composition [10][11][12][13][14][15], as lightweight concrete blocks [16,17] or in asphalt mixes [18], while others have shown their potential use as masonry units [19] in masonry structural elements.…”

Section: Introductionmentioning

confidence: 99%

Volcanic Tuff as Secondary Raw Material in the Production of Clay Bricks

et al. 2021

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The present work examines an innovative manufacturing technique for fired clay bricks, using tuff as a secondary raw material. Samples were made of clay and tuff (0–30 wt.%) fired at 900 to 1100 °C. The chemical and mineralogical compositions and physical and thermal analyses of raw materials were investigated by using SEM-EDS, RX and DTA-TG curves. The samples were analysed from the mineralogical, technological and mechanical points of view. The result show that the tuff’s presence in the clay mixtures considerably reduced the shrinkage of the product during the firing process, and the manufactured samples were of excellent quality. The compressive strength of the bricks varied from 5–35.3MPa, being influenced by the tuff content, clay matrix properties and firing temperatures. Finally, the heat demand for increasing the temperature from room to the firing temperature of the sample with 10% tuff content was 22%.

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Application of Zeolite Tuffs as Mineral Filler in Warm Mix Asphalt

Cited by 25 publications

References 32 publications

Laboratory Methods for Assessing the Influence of Improper Asphalt Mix Compaction on Its Performance

Laboratory Methods for Assessing the Influence of Improper Asphalt Mix Compaction on Its Performance

Altered Volcanic Tuffs from Los Frailes Caldera. A Study of Their Pozzolanic Properties

Volcanic Tuff as Secondary Raw Material in the Production of Clay Bricks

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