In this context, using five distinctive parameters (water/cement ratio, curing, amount of cement, compression and additive), 96 cylindrical concrete samples were produced; images of the samples were taken before they were examined at the compression testing, and the training and testing procedures for ANN and IP were realized using the obtained pressure readings at the laboratory.
The simulations reveal that while the overall volume of the polymer shrinks during cure, the amount of free volume increases.
Differential scanning calorimeter (DSC) thermal analysis was conducted to determine the optimum amount of curing agent, curing temperature, and curing time.
Among several factors affecting the compressive strength, five parameters that maximize all of the responses have been chosen as the most important ones as age of testing, binder type, binder amount, curing type and steel fiber volume fraction.
Similar results were shown by Perez-Nicolas et al. (Pérez-Nicolás et al. 2017) where they found that after 28 days of curing, increasing the amount of nanometrically structured TiO2 in the cement decreased the compressive strength due to the increase of mixing water.
Sih et al. (1980) showed that there is a linear relationship between the increase in temperature during the exothermic reaction of cement curing and the amount of cement used, and they stated that a cement mantle thickness of more than 5 mm would be a risk factor for thermal bone necrosis in hip arthroplasty.
Notwithstanding subsection (b)(2) of this section and sections 506(b) and 1225(a)(5) of this title, if it is proposed in a plan to cure a default, the amount necessary to cure the default, shall be determined in accordance with the underlying agreement and applicable nonbankruptcy law.
To decrease the internal stress, we cured the epoxy resin with an excess amount of curing agents.
Bonding strength of the system with the added excess amount of curing agent showed a higher value than that for the system with an equivalent amount of curing agent.
The aim of this manuscript was to analyze the toughenability of two different epoxy systems exhibiting similar relative increases in KIC by rubber addition: (a) diglycidylether of bisphenol A (DGEBA) cured with piperidine; (b) DGEBA cured with a stoichiometric amount of 4,4′-diamine-3,3′-dimethyldicyclohexylmethane 4,4′-diamine-3,3′-dimethyldicyclohexylmethane 4,4′-diamine-3,3′-dimethyldicyclohexylmethane 4,4′-diamine-3,3′-dimethyldicyclohexylmethane
This behaviour has been related to the crosslink density of the formed networks, and also to etherification reactions occurring during cure which lower the amount of anhydride needed in order to complete the curing process.
