The paper argues that for answer set programming purposes it is not necessary to use unstratified negation but it is more appropriate to employ a basic language based on simple choice constructs, integrity constraints, and stratified negation. This offers a framework that enables natural problem encodings and smooth extensions, for instance, with constraints and aggregates.

   Nowadays, in addition to materials and components of asphalt mixtures that are bitumen, aggregates and mineral fillers, other materials known as additives or modifiers are also used. These compounds include wide range of organic, inorganic, industrial, and natural materials used in order to reduce deficiencies, to improve the physical properties and to modify some mechanical properties o...

Recycled concrete aggregates (RCAs) have been demonstrated as an alternative source to exhaustible natural aggregates. In this paper, we focus on the enhancement treatments for coarse and fine RCAs effect of these durability recycled (RC) made from treated by weakening strengthening cement paste adhered their surface. We conducted comparative analyses improvement mechanical properties. The resu...

In spite of not being legally accepted in most countries, mixed recycled aggregates (MRA) could be a suitable raw material for concrete manufacturing. The aims of this research were as follows: (i) to analyze the effect of the replacement ratio of natural coarse aggregates with MRA, the amount of ceramic particles in MRA, and the amount of cement, on the mechanical and physical properties of a ...

AMOEBOID OLIVINE AGGREGATES FROM EFREMOVKA (CV3). S. S. Russell, A. N. Krot, T. E. Jeffries, and A. A. Ulyanov Dept. Mineralogy, The Natural History Museum, Cromwell Road, London SW7 5BD, UK ([email protected]) Hawai’i Institute of Geophysics and Planetology, School of Ocean and Earth Science and Technology, Universitry of Hawai’i at Manoa, Honolulu, HI 96822, USA. M.V. Lomonosov Moscow State Univ...

The combined action of physical protection and chemical stabilisation is the main factor regulating persistence soil organic matter (SOM). In particular, refers to compartmentalization SOM microbial biomass within aggregates. Thus, we have investigated role (macro-, meso- micro-) aggregates in extracellular intracellular DNA (eDNA vs iDNA) from oxidative stress by treating with Low Temperature ...

Growths and clusters of minerals (magnetic electrostatic flocs micelles) in the sediment composition natural man-made reservoirs technological cycle mining metallurgical enterprises have been studied. Their influence on sedimentation differentiation substances efficiency ore separation industrial waste processing conditions beneficiation factories was determined.

Recycling is the process by which previously used materials are utilized in producing new products. Finding natural materials for used in construction is getting more and more difficult worldwide. In order to reduce the dependent on natural aggregates (NA) in concrete making recycled aggregates (RA) from demolished structures and roads can be utilized as an alternative if tests proved it is sui...