Control of concrete strength and maturity in large-scale projects has traditionally been recorded and measured manually. Nowadays, there are new technologies that allow builders to melt sensors directly into the concrete, which –connected to a transmitter– show continuous data on the material's temp...
in which dεijp denotes the value of the plastic component of strain, λ is the plastic multiplier coefficient, ɜ is the flow potential eccentricity, σto shows the uniaxial tensile stress at failure, ψ is the dilation angle which is measured in the I¯13−3J¯2 plane, and I¯...
The consequences of the use of high performance concrete on the urban and the nature, are measured in terms of impact on the Environment. For the same cement production, that is to say the same pollution, the built surfaces in concrete are considerably larger. Potential disadvantage...
after the concrete cracking the increment of the reinforcement stress changes to be much slower and even show a declining trend at some certain positions as water pressure increases. The measured data shows that the maximum value is 49.5MPa (Ye, 1998), far lower than expected. Meanwhile, simila...
a他今晚不准备去看电影。 He tonight does not prepare to watch the movie. [translate] aincluding excavation in any materials, backfilling, concrete, formworks and reinforcements, installation of cover 包括挖掘在任何材料,重新填没,混凝土、模板和增强,盖子的设施 [translate] ...
Cores were extracted and their capillary suction measured in the laboratory in order to assess their permeability when compared to control cores from similar un-treated structures, all constructed during the same time period. The study is ongoing and this paper presents the findings with regard to ...
slumpunderitsownweight.Theslumpininchesismeasuredinthemannershown.Unit6ConcreteConstruction •PartⅠIllustratedWordsandConcepts •Figure6-2TheGrowthofCompressiveStrengthinConcreteoverTime Moist-curedconcreteisstillgainingstrengthafter6months,whereasAir-driedconcretevirtuallystopscuringaltogether.Unit6Concrete...
Representation bias occurs when the sample underrepresents the population90. Data in many ML studies were collected from published literature, where mean values and standard deviations for the output (e.g., compressive strength) instead of all the measured values were typically reported. Researchers ...
The stress–strain curves of concrete with compressive strengths of 20, 30, 50, 65, 95, and 105 MPa are calculated according to the experimentally measured parameters, and the axial stress–strain curves are obtained, as shown in Fig. 11. The results show that as the strength increases, ...
The compressive and flexural strengths of concrete using lateritic sand and quarry dust were measured in the laboratory. Compressive strength of the concrete was found to increase significantly when heated up to 250 °C and also increased with age as it is with conventional concrete. It was disco...