Results 221 to 230 of about 93,292 (244)
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Journal of the Chinese Institute of Engineers, 1998
Abstract The strength of lightweight aggregate concrete depends basically on the mortar strength and the packing strength of lightweight coarse aggregate. The former can be adequately estimated based on the water/cement ratio, but there has been no appropriate method to determine the latter.
Tsong Yen +3 more
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Abstract The strength of lightweight aggregate concrete depends basically on the mortar strength and the packing strength of lightweight coarse aggregate. The former can be adequately estimated based on the water/cement ratio, but there has been no appropriate method to determine the latter.
Tsong Yen +3 more
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Construction and Building Materials, 2021
Abstract This paper reports the results of an experimental study of the shear strength of plain concrete made using recycled low-strength concrete coarse aggregates (RCA) and natural coarse aggregates (NCA). Ninety push-off specimens were cast and tested. Three types of coarse aggregates were used: recycled low-strength waste concrete, limestone, and
Khaldoun N. Rahal, Walid Hassan
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Abstract This paper reports the results of an experimental study of the shear strength of plain concrete made using recycled low-strength concrete coarse aggregates (RCA) and natural coarse aggregates (NCA). Ninety push-off specimens were cast and tested. Three types of coarse aggregates were used: recycled low-strength waste concrete, limestone, and
Khaldoun N. Rahal, Walid Hassan
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The strength of aggregates formed in flocculation
Chemical Engineering Science, 1978Abstract Three distinct techniques have been employed to determine the strength of adhesion of particles in coagulating and flocculating media. Adhesion forces ranging over 4 orders of magnitude were measured with spherical particles of glass (10–30, μm dia.) in aqueous solutions containing varying concentrations of magnesium sulphate and an anionic ...
D.K.W. Smith, J.A. Kitchener
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Effect of tillage on aggregate strength and aggregation of Vertisols
Soil and Tillage Research, 1989Abstract Strength and stability of aggregates of four Vertisols from New South Wales, Australia, were examined. The effect of tillage on aggregate properties was evaluated by comparing paired sites of cultivated soils (8 to > 50 years) with adjacent native pasture soils that had never been cultivated.
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Dependence of Cement-Aggregate Bond-Strength on Size of Aggregate
Nature, 1960IN a recent study1 the strength of the bond between Portland cement paste and sawn aggregate surfaces was found to be less than that of the paste matrix. In some instances therefore, for example in the case of the flexural strength of plain concrete containing smooth aggregate, cement-aggregate bond is likely to be the factor controlling strength ...
K. M. ALEXANDER, J. WARDLAW
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Influence of Aggregate Gradation of Coarse Aggregates on Concrete Strength
Applied Mechanics and Materials, 2012Concrete is widely used in engineering construction, and studying how to improve the strength of concrete is particularly important. The coarse aggregate is one of the elements in concrete, its property affects the strength of concrete prominently. The effect of coarse aggregate size distribution on the development process of concrete strength was ...
Wei Xie, Deng Kui Yuan, Shu Shan Li
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Strength and Fracture Properties of Aggregates
2012This paper presents a study of the mechanical and fracture properties of various types of aggregates used in asphalt mixtures. Three types of rocks namely, greywacke, granite and limestone, were evaluated. Compressive and tensile characteristics of the rocks were determined by means of uniaxial compressive and indirect tensile tests, respectively ...
Ignacio Artamendi +3 more
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A Strength Prediction of Aggregated Composites
Journal of Composite Materials, 1969This paper is concerned with the development of a theory to predict the strength and failure mechanisms of systems consisting of discrete aggregated particles held together in some fashion. From a practical viewpoint, this would include materials such as plain and asphaltic concrete, and soils.
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Role of Ionic Strength in Staphylococcal Cell Aggregation
Langmuir, 2016Cell aggregation plays a key role in biofilm formation and pathogenesis of Staphylococcus species. Although the molecular basis of aggregation in Staphylococci has already been extensively investigated, the influence of environmental factors, such as ionic strength, remains poorly understood.
Thomas, Vanzieleghem +5 more
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Bond strength of polymer lightweight aggregate concrete
Polymer Composites, 2013Bond strength, physical, and mechanical properties of lightweight PC were investigated with inclusion of pumice lightweight aggregate in maximum size of 12 mm. As binder material, epoxy resin‐based polymer was used with its hardener. The binder to aggregate ratio was 30% by weight.
Uygunoglu, Tayfun +4 more
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