Results 51 to 60 of about 262 (136)

Optimization of mix proportion and performance research of composite shrinkage-reducing agent for aeolian sand concrete based on response surface methodology

Yantu gongcheng xuebao
To address the issues of early-age high shrinkage and the consequent strength deterioration in fully aeolian sand-based high-performance concrete, which arise from its low water-to-binder ratio and absence of coarse aggregate, this study designs and ...
WANG Jishan 1, OU Zhongwen 2, HUANG Xuefen 1, 2, GUO Yuansong 3
doaj   +1 more source

The making of pure quartzose sand in continental interiors: Paraná River (Brazil and Argentina)

Sedimentology, Volume 73, Issue 3, Page 802-837, April 2026.
ABSTRACT As part of a comprehensive project on sedimentary processes in South America, this study focuses on sediment generation in the intracratonic Paraná Basin and monitors the evolution of sand composition along the Paraná River from central Brazil to the Río de la Plata estuary in Argentina.
Eduardo Garzanti, Marta Barbarano, Mara Limonta, Guido Pastore, Pieter Vermeesch, Giovanni Vezzoli   +5 more
wiley   +1 more source

Microstratigraphy and Site Formation Processes at Quebrada Jaguay 280 (Peru)

Geoarchaeology, Volume 41, Issue 2, March/April 2026.
ABSTRACT This study presents a microanalytical, geoarchaeological study of Quebrada Jaguay (QJ)‐280, a Terminal Pleistocene–Holocene coastal site in southern Peru. Combining micromorphology, µXRF and µFTIR, we develop a site formation model that also reassesses site use and forager behaviour.
Sarah A. Meinekat, Emily B. P. Milton, Daniela P. Osorio, Susan M. Mentzer, Christopher E. Miller, Daniel H. Sandweiss, Kurt Rademaker   +6 more
wiley   +1 more source

Study on the evolution of wind-blown sand and gravel flow erosion resistance of aeolian sand concrete in cold regions and the coupling mechanism of freeze-thaw cycles: Laboratory tests and numerical simulation

Case Studies in Construction Materials
Concrete structures in the wind-sand environments of the Gobi Desert, Northwest China, face severe damage from the combined effects of freeze-thaw (F-T) cycles and wind-blown sand and gravel flow.
Kai Zhang, Haoliang Cheng, Xingxin Zhang, Yanhua Zhao, Bo Yang, Weichao Zhai, Lihai Tan   +6 more
doaj   +1 more source

Depositional Interplay Between the Ancestral Rocky Mountains and Ouachita–Marathon–Sonora Orogenies: Insights From Provenance Records in the Late Palaeozoic Marfa Basin, West Texas, USA

Basin Research, Volume 38, Issue 2, March–April 2026.
Provenance records from the late Palaeozoic Marfa Basin in West Texas reveal the transition from the Ancestral Rocky Mountains to the Ouachita–Marathon–Sonora orogenies during the early Permian in SW Laurentia. ABSTRACT The Marfa Basin in West Texas is a late Palaeozoic synorogenic depocenter associated with regional deformation linked to the Ancestral
Sandra Juárez‐Zúñiga, Daniel F. Stockli, Benjamin Johnson, Timothy F. Lawton   +3 more
wiley   +1 more source

Sedimentary Architecture of the Stimson Formation at the Naukluft Plateau, Gale Crater, Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 2, February 2026.
Abstract Sedimentary texture, facies, and architecture can be used to reconstruct the palaeoenvironment under which sediments accumulate. On Mars, palaeoenvironmental reconstructions are used to understand ancient Martian atmospheric circulation, surface sedimentary processes, and the presence of water, to provide insight into ancient habitability and ...
Amy E. Dean, Steven G. Banham, Gerhard Paar, Sanjeev Gupta, Joel M. Davis, Ashwin R. Vasavada   +5 more
wiley   +1 more source

The regional evolution of a dryland fluvio‐aeolian and lacustrine succession in response to allocyclic forcing: insights from the Early Permian Cutler Group, Utah, USA

Sedimentology, Volume 73, Issue 2, Page 297-354, February 2026.
ABSTRACT Preserved allocyclic signatures in the rock record often reflect basin‐scale climatic variability and serve as key proxies for correlating ancient dryland successions. The notion of climate cyclicity, however, remains largely untested on regionally constrained, outcrop‐calibrated studies.
Oliver Button, Jack G. Connor, Ross P. Pettigrew, Ben A. Kilhams, John A. Howell   +4 more
wiley   +1 more source

Effects of Aeolian Sand Powder on the Micro Mechanical Properties of Aeolian Sand Concrete Analysis of Impact and Improvement Mechanism

工程科学与技术
In response to the issue of decreased mechanical properties of concrete caused by replacing river sand with windblown sand in large quantities, this study adopts the concept of waste treatment.
LI Yue, WANG Hailong, WEI Lisi, GUO Haolong, MA Kuo, YUN Zhengjun   +5 more
doaj  

Analysis of the Damage to the Aeolian sand Concrete Surfaces Caused by Wind-Sand Erosion

Journal of Advanced Concrete Technology, 2017
Xue, Huijun, Shen, Xiangdong, Liu, Qian, Wang, Renyuan, Liu, Zheng   +4 more
openaire   +2 more sources

Interfacial Transition Zone Strengthening in Aeolian Sand Concrete via ssDNA Anchored CNTs on Alkali-Activated Surface Layer. [PDF]

Materials (Basel)
Zhou Y, Cai T, Zhong X, Zhao C, Luo T, Tian K, Li Y.   +6 more
europepmc   +1 more source