Results 141 to 150 of about 81,897 (314)
River, EarlyView.Abstract This study describes the effect of electromagnetic field (EMF) treatment on the chemical and electrical properties of tap water. It also contributes to a better understanding of the influence of this technique on the physicochemical properties of water exposed to different treatment times by an EMF generated by the Aqua 4D.
Abderrahmane Elmelouky +6 more
wiley +1 more source
100 Years of Concrete Pavements in Iowa Final Report, March 2009
, 2009 Portland cement concrete (PCC) pavements have given excellent service history for Iowa. The first concrete pavement was placed in Le Mars in 1904 and was in service until 1968. The Eddyville Cemetery Road placed in 1909 is still in service today.
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Experimental Study on the Compressive Strength and Fatigue Life of Cement Concrete under Temperature Differential Cycling. [PDF]
Materials (Basel), 2023 Tao C, Dong L, Fan W, Yu T.
europepmc +1 more source
The Hidden Costs of Coffee Production in the Eastern African Value Chains
Sustainable Development, EarlyView.ABSTRACT There is increasing recognition that significant hidden costs associated with agrifood systems are not reflected in market prices. Coffee is among the three most traded agricultural commodities in the world and supports the livelihoods of more than 30 million smallholder households.
Annet Adong +3 more
wiley +1 more source
Experimental and Numerical Simulation on the Penetration for Basic Magnesium Sulfate Cement Concrete. [PDF]
Materials (Basel), 2023 Mei Q, Yu H, Ma H, Tan Y, Wu Z.
europepmc +1 more source
Leveraging Life Cycle Assessment for Informing Packaging Eco‐Design and Eco‐Modulation
Sustainable Development, EarlyView.ABSTRACT Eco‐modulation is designed to promote the adoption of eco‐design. However, in practice, its application is mostly concentrated on end‐of‐life (EoL) optimization. This study addresses the gap by proposing a framework to assess product–packaging systems as integrated units throughout the full life cycle.
Dwi Putri Yudianti Yudison +2 more
wiley +1 more source
Effects of pre-hydration on hydraulic properties on Portland cement and synthetic clinker phases
, 2008 The ageing of cements (CEM I 52,5 R and API Oilwell Class G) and also the pure cement clinker minerals (C3S, pure C3A, Na2O-doped C3A, C4AF and calcium sulphate hemihydrate) has been studied at 60% and 85% RH using in-situ XRD, calorimetry, ESEM, XPS and
Black, L +3 more
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The relationship between porosity and thermal conductivity of concrete [PDF]
, 1990 This thesis reports the details and results of an experimental study into the effect of porosity on the thermal conductivity of lightweight and normal-weight concretes.
Ganjian, Esmaiel
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Sustainable Development, EarlyView.ABSTRACT Sustainable Development interventions must deal with rapid and novel changes affecting complex social‐ecological systems, calling for design based on a resilience approach. However, limited analytical attention has been paid to the design settings in which such approaches are deployed.
Yiheyis Maru +6 more
wiley +1 more source
Evaluating Properties of Blended Cements for Concrete Pavements, December 2003
, 2003 The addition of supplementary cementitious materials (SCMs), such as fly ash (FA) and slag, generally improves concrete workability, durability, and long-term strength.
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