Results 81 to 90 of about 92,586 (282)
Archaeological Studies for the San Antonio Channel Improvement Project, including Investigations at Guenther\u27s Upper Mill (41BX342) [PDF]
, 1987 Under Contract No. DACW63-81-C-0022 to the Department of the Army, Corps of Engineers, Fort Worth District, the Center for Archaeological Research, The University of Texas at San Antonio, in the spring of 1981, conducted historic research and survey in ...
Cox, I. Waynne +2 more
core +2 more sources
Crack healing in cementitious materials including test methods [PDF]
, 2020 If concrete is crack free, deleterious substances can be avoided entering the body of the material, that may corrode the rebar or encourage freeze/thaw damage. This paper examines a self healing system of cementitious materials.
Amess, Leon +4 more
core +1 more source
Temperature‐dependent shear behavior and constitutive model of the rock–concrete interface
Deep Underground Science and Engineering, EarlyView.Shear tests were conducted to investigate the temperature‐dependent shear behavior of the rock–concrete interface, highlighting the interaction between the surrounding rock and the lining during tunnel fires. Under experimental conditions, concrete exhibited greater temperature sensitivity than rock, with the shear fracture surface transitioning from ...
Hongbin Chen +6 more
wiley +1 more source
EXPERIMENTAL DETERMINATION OF THE TOTAL SHRINKAGE STRAIN OF REINFORCED CONCRETE
International Journal for Computational Civil and Structural EngineeringThe article proposes a method for measuring the total shrinkage strain of a reinforced concrete prism in such a way that it is possible to measure the total shrinkage strain on an open surface of the prism no later than three hours after concreting ...
Valeryia Rzhevutskaya, Yuliya Maskalkova
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.This study investigates ground subsidence during tunnel excavation in karst areas, highlighting the combined effects of karst cave proximity, cave size, and soil spatial variability. Findings suggest that shorter cave distances and larger cave sizes increase subsidence variability, and a modified Peck formula is proposed for more accurate subsidence ...
Zhenghong Su +4 more
wiley +1 more source
EFFECT OF WATER-CEMENT RATIO ON RHEOLOGICAL PROPERTIES OF FOAM CONCRETE MADE OF LOCAL RAW MATERIALS
Вестник Дагестанского государственного технического университета: Технические науки, 2018 . Objectives The purpose of this work is to study the dependency of the fluidity of foam concrete mixtures on the water-cement ratio when using various local aggregates and wastes from the Republic of Dagestan and comparing the fluidity characteristics ...
Kamil A. Otsokov
doaj +1 more source
Management of the Properties of Shipbuilding Expanded Clay Lightweight Concrete
International Journal of Engineering & Technology, 2018 The purpose of the research was to improve the strength and durability of shipbuilding expanded clay lightweight concrete by using modifiers, fibers and optimizing the composition of concrete. The four-factor experiment was carried out according to the optimal plan. The experiment varied, the amount of sulfate-resistant Portland cement, silica fume and
Sergii Kroviakov +2 more
openaire +1 more source
Deep Underground Science and Engineering, EarlyView.Triaxial compression tests under unloading confining pressure conditions were conducted to systematically analyze the permeability behavior of granite retrieved from the different classification surrounding rocks. Abstract The rock mass within mountain tunnels undergoes complex changes in permeability, strength, and deformation during tunneling ...
Xiaoyan Zhang +4 more
wiley +1 more source
Fiber Reinforced Self-Compacting Lightweight Concrete for the Manufacture of Floating Structures
Zanco Journal of Pure and Applied Sciences, 2019 In this study fiber reinforced self-compacting lightweight concrete prepared using polypropylene fiber, limestone dust, and lightweight expanded clay aggregate LECA.
Danar Altalabani +2 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.A novel cavity contraction solution and multilayer shaft wall model were developed to analyze deep shaft stability, considering rock viscosity, support structures, and water pressure, with successful validation through a Hulusu Coal Mine case study.
Bin Chen +5 more
wiley +1 more source