Results 11 to 20 of about 3,740 (263)

Physicochemical Properties of Hydrated Portland Cement Blended with Rice Husk Ash

open access: yesJournal of Chemistry, 2020
In the presence of significant quantities of carbon dioxide (CO2) and elevated temperatures in the atmosphere due to climate change, cement-based materials are susceptible to carbonation. Blended cements are more prone to carbonation attack than Portland
Joseph Mwiti Marangu   +2 more
doaj   +1 more source

Decay Resistance of Surface Carbonized Wood

open access: yesMaterials, 2022
Surface carbonization, or charring, of wood is a one-sided modification method primarily intended for protection of exterior cladding boards. The heavily degraded surface acts as a barrier layer shielding the interior from environmental stresses, and as such acts as an organic coating.
Belt, Tiina   +4 more
openaire   +3 more sources

Performance of GGBS Cement Concrete under Natural Carbonation and Accelerated Carbonation Exposure

open access: yesJournal of Engineering, 2021
One of the primary problems related to reinforced concrete structures is carbonation of concrete. In many cases, depth of carbonation on reinforced concrete structures is used to evaluate concrete service life.
Jun Zhao   +3 more
doaj   +1 more source

Carbon Resistances [PDF]

open access: yesPhysical Review (Series I), 1902
n ...
openaire   +1 more source

Electrical resistivity of carbon films [PDF]

open access: yesCarbon, 1973
The electrical resistivity along 500 A thick carbon films has been measured from 1.2 to 1100°K. The electrical resistivity measurements at high temperature indicate a change in the structure of the film beginning at about 670°K. In the theory of non-crystalline solids by Mott, the temperature dependence of the electrical conductivity σ, at low ...
D.S. Kupperman, C.K. Chau, H. Weinstock
openaire   +3 more sources

Effect of Superabsorbent Polymer (SAP) Internal Curing Agent on Carbonation Resistance and Hydration Performance of Cement Concrete

open access: yesAdvances in Materials Science and Engineering, 2022
To clarify the influencing mechanism of superabsorbent polymer (SAP) internal curing agent on the carbonation resistance of cement concrete, accelerated carbonation experiment was conducted to explore the effect of particle size and dosage of SAP on ...
Jieting Xu   +5 more
doaj   +1 more source

Study on carbonation resistance and chloride ion distribution after carbonation of alkali-activated raw sea sand slag mortar

open access: yesCase Studies in Construction Materials, 2023
Driven by the scarcity of river sand and accompanying environmental concerns, sea sand is emerging as an alternative material. However, the durability of construction products can be jeopardized by chloride ions in raw sea sand.
Wenda Wu   +3 more
doaj   +1 more source

Effect of Freeze–Thaw Cycles on Carbonation Behavior of Three Generations of Repeatedly Recycled Aggregate Concrete

open access: yesApplied Sciences, 2021
Multiple recycling of waste concrete has attracted widespread attention. This study presented the carbonation behavior of repeatedly recycled aggregate concrete (RRAC) used in a micro-frozen region.
Hui Liu   +6 more
doaj   +1 more source

Research on Carbonation Characteristics and Frost Resistance of Iron Tailings Powder Concrete under Low-Cement Clinker System

open access: yesAdvances in Materials Science and Engineering, 2020
The accelerated carbonation, natural carbonation, fast freeze-thaw test, and pore structure analysis of C30 and C50 concrete with different proportions of iron tailings powder and slag powder were tested, respectively.
Ruidong Wu   +4 more
doaj   +1 more source

The Impact of Fractal Gradation of Aggregate on the Mechanical and Durable Characteristics of Recycled Concrete

open access: yesFractal and Fractional, 2023
Properties of recycled aggregate concrete (RAC) are influenced by the composition and particle size distribution of recycled coarse aggregate (RCA). The study herein designed seven distinct groups of RACs with varying aggregate fractal dimensions (D) and
Chang-Qing Quan   +5 more
doaj   +1 more source

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