Results 11 to 20 of about 173,582 (292)

Effect of calcium aluminate cement variety on the hydration of Portland cement in blended system [PDF]

open access: yes, 2014
Two kinds of CACs with different monocalcium aluminate (CA) contents were used in the PC/CAC (PAC) mixtures. Effects of CA and CACs on the properties of PAC were analyzed by setting times and the compressive strength tests, and also by means of ...
De Schutter, Geert   +3 more
core   +2 more sources

Early Hardening Process of CA Mortar Indicated by Electrical Resistivity [PDF]

open access: yes, 2020
A non-contact electrical resistivity measurement device was employed to indicate the early hardening process of cement asphalt emulsified mortar (CA mortar). It was found that this process was analogous with the hydration process of cement and could be categorized into three parts: dissolving period, induction period and setting period.
Wang, Tao   +8 more
openaire   +1 more source

Preliminary Study on Assessing Delaminated Cracks in Cement Asphalt Mortar Layer of High-Speed Rail Track Using Traditional and Normalized Impact–Echo Methods

open access: yesSensors, 2020
The severe deterioration of a cement asphalt (CA) mortar layer may lead to the movement of the upper concrete slab and impair the safety of the speedy train.
Ying-Tzu Ke   +5 more
doaj   +1 more source

The Mechanical and Thermal Properties of Cement CAST Mortar/Graphene Oxide Composites Materials

open access: yesInternational Journal of Concrete Structures and Materials, 2022
This paper presents the influence of the graphene oxide (GO) sheet contents at conditions of 0, 0.01, 0.03, 0.05, and 0.1 wt% on the mechanical and thermal properties of GO/CAST 11 LW mortar (GMT) composites for heat insulating brick.
Thidatip Janjaroen   +6 more
doaj   +1 more source

Reliability-based analysis of recycled aggregate concrete under carbonation [PDF]

open access: yes, 2018
Durability represents a crucial issue for evaluating safety and serviceability of reinforced concrete structures. Many studies have already focused on carbonation-induced corrosion of natural aggregate concrete (NAC) structures, leading to several ...
Faleschini, Flora   +2 more
core   +1 more source

Experimental Research on Compression Properties of Cement Asphalt Mortar due to Drying and Wetting Cycle

open access: yesAdvances in Materials Science and Engineering, 2014
Uniaxial compression test of cement asphalt (CA) mortar specimens, due to drying and wetting cycle of 0, 2, 4 and 8 times, is carried out by using the electronic universal test machine, with the strain rate ranging from 1 × 10−5 s−1 to 1 × 10−2 s−1.
Ping Wang   +4 more
doaj   +1 more source

Total replacement of recycled aggregate and treated wastewater: concrete recycling in extremis [PDF]

open access: yes, 2016
Million tons of construction and demolition waste (CDW) are generated every year around the world, and most of them are not adequately disposed, generating significant pollution on water, soil and air.
Cabrera Covarrubias, Francisca Guadalupe   +3 more
core   +2 more sources

Relationship between Degree of Deformation in Quartz and Silica Dissolution for the Development of Alkali-Silica Reaction in Concrete. [PDF]

open access: yes, 2017
This paper presents research on the influence of quartz deformation in aggregates for the development of the alkali-silica reaction in concrete and its relationship with silica dissolution.
Dal Molin, Denise   +4 more
core   +1 more source

Short-Term Creep Experiment of Cement Asphalt Mortar and Its Numerical Simulation

open access: yesAdvances in Materials Science and Engineering, 2016
In order to investigate the creep performance of cement asphalt mortar (CA mortar), the field sampling of CA mortar cylinder samples was produced, and all samples were tested on WDW series electric universal testing machine by using uniaxial static creep
Hao Xu   +3 more
doaj   +1 more source

Efeito da pré-molhagem do agregado nas propriedades das argamassas com agregado reciclado deconcreto e agregado leve [PDF]

open access: yes, 2019
This paper examines the suitability of partially replacing natural aggregate, sand, (NA) with recycled concrete aggregate (RCA) or lightweight aggregate (LWA) in mortars, under the hypothesis that pre-wetting aggregates would produce improvement in ...
Aponte Hernández, Diego Fernando   +3 more
core   +4 more sources

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