Results 81 to 90 of about 4,002 (161)

Activación de arcillas de bajo grado a altas temperaturas Activation of low grade clays at high temperatures

open access: yesRevista Ingeniería de Construcción, 2010
Se presenta una propuesta de producción de puzolanas artificiales a partir de activar arcillas de baja pureza, como alternativa de producción de Metacaolín. Se trabajó básicamente con tierra rica en minerales arcillosos, principalmente caolín.
Rancés Castillo   +5 more
doaj  

Microstructural analysis and durability performance of concrete incorporating calcium-carbonate-rich marble waste as fine aggregate replacement

open access: yesMaterials Research Express
Calcium-carbonate rich (CCR) marble waste with high calcium-carbonate content was investigated as a possible full or partial substitute for natural fine aggregate in concrete.
Kamaldeep Kaur, Gurpreet Singh
doaj   +1 more source

Does no-till cover crop influence in situ measured soil water potential and saturated hydraulic conductivity?

open access: yesSoil and Water Research
Soil water energy determines soil water balance, plant water uptake, and soil thermal properties, but the effects of cover crops (CCs) on in situ measured soil water energy and temperature are not well understood.
Olivia Peters, Samuel I. Haruna
doaj   +1 more source

Factors Affecting Transfer Sorptivity of Lime and Cement Mortars in the Freshly-Mixed State

open access: yes, 2013
The sorptivity, S, is a measure of the ability of a porous material to absorb and transmit water by capillary action. Transfer sorptivity, A, is a measure of the ability of an absorbent substrate to withdraw water from a wet mortar mix.
Derogar, Shahram, Ince, Ceren
core   +1 more source

Design of an automated tension infiltrometer for unsaturated hydraulic conductivity measurement [PDF]

open access: yes, 2006
A tension infiltrometer for field use, where both water level changes measurement and tension settings could be automated, was built in-house. Differential pressure transducers were used to automate the water level measurement in the reservoir.
Špongrová, Kamila
core  

Experimental study of lightweight concrete prepared from super absorbent polymers (SAPs) and glass fibers (GF)

open access: yesJournal of Asian Architecture and Building Engineering
This study investigates the effect of super absorbent polymers (SAPs) and glass fiber (GF) additions on the properties of lightweight concrete. The SAPs act as a pore-forming agent, with the addition of various GF contents (0.1–1.0% by weight of dry ...
Kittipong Kunchariyakun   +6 more
doaj   +1 more source

Determining soil conductivity and sorptivity from single ring infiltration tests

open access: yes, 2007
E-mail Addresses: touma@ensam.inra.frInternational audienceThe difference between the cumulative infiltration occurring during three-dimensional axisymmetric and one-dimensional vertical flow is a linear function of time.
Touma, Jaoudat   +2 more
core   +1 more source

Investigation of the sorptivity of type l and type lP cement concrete

open access: yes, 2012
This study investigated the durability of Type I and Type IP cement concrete. Specifically on the effect of varying water-to-cement ratio and curing period and was assessed through the sorptivity test.
Dela Rosa, Kenneth M.
core  

Water Sorptivity and Permability of New-Old Concrete Composite System

open access: yes, 2010
Several experiments were carried out to investigate the effects of water to binder ratio(w/b) and mineral admixtures on water sorptivity and permeability of new-old concrete composite system in this paper in order to further understand the transport ...
Guang Cheng Long   +2 more
core   +1 more source

Sorptivity calculation for arbitrary diffusivity [PDF]

open access: yes
An estimate of the sorptivity that requires only the knowledge of simple integrals of the soil-water diffusivity weighted by a power of the water content is present.
Haverkamp, R.   +4 more
core   +1 more source

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