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181
Optimization of Low-Carbon Footprint Quaternary and Quinary (37% Fly Ash) Cementitious Nanocomposites with Polycarboxylate or Aqueous Nanosilica Particles
Published 2019-01-01“…In this paper, nS particles dispersed in (a) polycarboxylate or (b) water were added to a low-carbon footprint reference binder containing 43% Portland cement (PC), 20% limestone powder (LS), and 37% fly ash (FA) by mass of binder. …”
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182
Erodibility and sedimentation potential of marly formations at the watershed scale
Published 2019-07-01“…The results indicated that Kashkan formation comprises siltstone, sandstone, shale, and conglomerate, and Grupi formation contains shale, clay, and limestone with a high erodibility potential. Field measurements and soil samples analyzed for effective factors releaved that sediment yield for Merek watershed was 18080.6 m3/ha/y. …”
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183
Research on Design Indicators for Graded Crushed Stone Mixture Based on Vibration Molding Method
Published 2020-01-01“…Therefore, based on the modified vibration compaction, the guidelines for standardized mix design of graded crushed stone mixture in Fujian province are proposed: the resilient modulus of 300 MPa and the deformation rate of 10–8 in the dynamic triaxial test are used as the performance indicators of the bearing capacity and the antideformation ability; the shear strength of 400 kPa in the static triaxial test is used as the performance indicators of the shear failure resistance. Besides, most limestone mixtures perform well and have the advantages of good resistance to permanent deformation and shear resistance.…”
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184
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185
PRELIMINARY FINDINGS AND AWARENESS FROM THE C6-1 ARCHAEOLOGICAL EXPLORATION IN KRONGNO, DAKNONG PROVINCE
Published 2018-12-01“…Vietnamese archaeologists have discovered and studied over 200 limestone caves with prehistoric dwellings dating from the early period of the Old Stone Age to the New Stone Age. …”
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186
Experiment of Carbonate Dissolution: Implication for High Quality Carbonate Reservoir Formation in Deep and Ultradeep Basins
Published 2017-01-01“…In the semiopen system, the weight loss from dolomitic limestone prevailed with 0.3% CO2 as the reaction fluid. …”
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187
Prediction of end-point phosphorus content of molten steel in BOF with machine learning models
Published 2024-01-01“…The factors influencing the end-point phosphorus (P) content in BOF were ranked in order of importance as: Tapping temperature > Turning down times > Steel scrap quantity> Operation habits of different working groups > Amount of oxygen injection> Sulfur and phosphorus content of molten iron > Addition amount of lime, limestone, and lightly burnt dolomite in the slag > Slag-splashing amount.…”
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188
Influence of the Chemical Composition of Asphalt and the 3D Morphology of the Aggregate on Contact Surface Adhesion
Published 2021-01-01“…The type of adhesion between the aggregate and the asphalt includes chemical and physical adsorption; chemical bonding is relatively strong, and the physical orientation force and mechanical interlocking force are relatively weak. Alkaline limestone aggregates should be used with asphalt with a high aggregate content of colloid and asphaltenes. …”
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189
The search for minerals and creation of first production and territorial complexes in Yamalo-Nenets National District (1932–1937)
Published 2018-06-01“…In 1935–1936, Yamalo-Nenets District Commitee applied to the Omsk regional Executive Committee for the allocation of funds for the district for the construction of mining industry — brick and limestone industry…”
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190
Rome à la campagne : les décors en pierre de la villa de la Grande Boussue à Nouvelles (Mons, Belgique)
Published 2023-12-01“…Belgian stones are predominantly present: Devonian and Carboniferous grey-blue limestones, various Belgian marbles including the Gris des Ardennes and the Rance red marble, as well as clayey limestones of the Tournai stone type. …”
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191
RESERVOIR CHARACTERIZATION OF THE CHELA FORMATION OF THE NSIAMFUMU AND LIAWENDA FIELDS IN THE ONSHORE COASTAL BASIN, D.R. CONGO
Published 2024-07-01“…The following observations were obtained: • Wells Lw-1: the formation is characterized by dolomitic limestone and micaceous black shale with a thickness of 34 m having heavy oil indices and an average porosity of 17% and a salinity greater than 300 gr/L; • Well Lw-2: the formation is characterized by islands of sand, coarse sandstone and a few quartz pebbles with a thickness of 10m showing evidence of light oil, gas and an average porosity of 24%; • Shaft Lw-3: the formation is dominated by micaceous shale and dolomite interbeds with a thickness of 14m showing little evidence of hydrocarbons, only salt water and residual oils; • Puits Ns-1: the formation is characterized by beige to grey dolomite, grey shale and white sand with a thickness of 6m showing evidence of light oil and an average porosity of 20%. …”
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192
Sierra Espuña (Librillos, 2023)
Published 2023-10-01“…It is part of the Betic reliefs that were formed in the Tertiary Era, and it is a mountain range composed of permeable limestone rock that produces springs such as the Balneario de Archena. …”
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193
Vestiges humains des niveaux de l’Aurignacien ancien du site de Brassempouy (Landes)
Published 2004-06-01“…It includes several caves (grotte du Pape, grotte des Hyènes, galerie Dubalen, galerie du Mégacéros) which are part of a complex karstic system developed in an Eocene limestone formation just a few meters beneath the natural ground surface. …”
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194
Sierra Espuña (Librillos, 2023)
Published 2023-10-01“…It is part of the Betic reliefs that were formed in the Tertiary Era, and it is a mountain range composed of permeable limestone rock that produces springs such as the Balneario de Archena. …”
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195
Analysis of Sedimentary Environment Conditions for Lacustrine Fine-Grained Sedimentary Rocks and Its Control of Lithofacies Development: A Case Study of the Lower Submember of Memb...
Published 2021-01-01“…In this submember, the lithofacies primarily includes organic-rich mudstone, organic-rich lime mudstone, organic-rich lime-bearing mudstone, and organic-contained argillaceous limestone/lime mudstone. The sedimentary environment controls the mineral composition and content in the lithofacies and thus determines the lithofacies types. …”
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196
Aménagements de berge monumentaux d’époque laténienne et romaine à Besançon (Doubs)
Published 2020-12-01“…BC) built with undressed limestone blocks of highly heterogeneous sizes. This development was followed by an imposing murus gallicus which is dated to about 80 BC and possibly corresponds to that quoted by Caesar. …”
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197
Hydrogeochemical Characteristics of the Haiyuan-Liupanshan Seismic Belt at the Northeastern Edge of the Tibet Plateau
Published 2022-01-01“…The higher concentrations of Ca2+ + Mg2+ and HCO3- were found in Group 2, which is located in the southeast of the HLFZ and may be attributed to carbonate weathering and the recharge of karst fissure water from ordovician dolomite and limestone. Contamination of groundwater in HLFZ is severe, with 78.6% of the sites classified as grade V, which means they cannot be used for drinking water or agriculture. …”
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198
A Machine Learning Approach for the Autonomous Identification of Hardness in Extraterrestrial Rocks from Digital Images
Published 2024-12-01“…A custom dataset of 1496 rock images, including granite, limestone, basalt, and sandstone, was created. Ten features, such as roundness, elongation, convexity, and Lab color values, were extracted for prediction. …”
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199
Relationship between Brittleness Index and Crack Initiation Stress Ratio for Different Rock Types
Published 2020-01-01“…According to results of the limestone tests, α = 3 for σc < 60 MPa (high porosity), α = 5 for 60 MPa ≤ σc ≤ 90 MPa (moderate porosity), and α = 8 for σc > 90 MPa (low porosity) as well as for igneous and metamorphic rocks. …”
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200
La flore sauvage du boulevard Dr Henri-Henrot à Reims/Durocortorum : approche carpologique de l’environnement du site et des productions de denrées végétales
Published 2022-11-01“…Several of them are strictly segetal flora, and accompany limestone soil improvements in harvesting practices. …”
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