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Hemra et al. [27] found the compressive strength of geopolymer sample increased from 45 MPa to 57 MPa with cordierite addition from 0 to 30 wt%, and the reason may be that it trended to reduce the volume fraction of porosity in geopolymer matrix and created network structures of cordierite which provided mechanical interlocking in the geopolymer composites resulted in the strong interaction between the matrix and particles dispersed phases.
Under UV radiation, the composites remove MB by a combination of adsorption and photodegradation, without deterioration of the geopolymer structure or the photoactive Cu2O component, suggesting that these geopolymer composites should function as useful new materials for the removal of organic pollutants from water or the atmosphere.
Behavior of Carbon and Basalt Fibres Reinforced Fly Ash Geopolymer at Elevated Temperatures, International Journal of Concrete Structures and Materials(unpublished)
Stability of MgO-modified geopolymeric gel structure exposed to a CO2-rich environment, Constr.
Improvement of physical and mechanical properties of geopolymer through addition of zircon, Materials Chemistry and Physics 217 (2018) 90–97

Provided steel chemistry and process routes compatible with high-volume mass production can be devised, new economic grades of free-machining steels could be developed.
It is thus likely that the graphite structure becomes more perfect with time and further growth (consistent with the observations described below with respect to Fig. 4).
In addition, the final structure of the smaller spheroidal nodules suggests uniform radial growth, with an increasing level of orderly arrangement of the graphene layers from a near-amorphous graphite core to a surrounding mantle considerably more graphitic in character (Fig. 4(b)).
Fig. 7(b) compares surface roughness of drilled holes and is fairly consistent with the wear comparisons shown by Fig. 7(a); graphitising from a bainite structure is again close in performance to leaded free-cutting steel.
Edmonds, A High-resolution Electron Microscope Study of the Growth Structure of Graphite Nodules in Steel, in: R.

The non-woven fabric is made from polypropylene broadly defined as sheet or web structures bonded together by entangling fiber or filaments mechanically, thermally or chemically.
Reinforced concrete experiment Most buildings and structures are made of reinforced concrete members, so a cracking experiment with RC member is significant.
The structure of the steel bars is shown in the Fig.4.
Fig.4 Structure of the test beam There were two electronic strain gauges attached to stirrups, one was attached on the stirrup near the middle of the borehole (No.1), and the other one was attached near the bottom of it (No.2).
Taylor: Cement Chemistry, 2nd edition[M].

At least 3 samples were tested and the minute quantitative differences of the water evaporation between the controls and carbonated samples due to the pore structure changes were supposed to be negligible.
Finally, the pore structure was studied with a Micrometrics Autopore III 9420 porosimeter at a contact angle of 130.0° and surface tension of 485 din/cm2.
Fig.3 TG & DSC curves for the controls and carbonated samples Porosity and pore structure The pore parameters and pore diameter distribution for the controls and carbonated samples are given in table 3 and Fig. 4 respectively.
The optimization of pore structure resulted from the formation of CaCO3 during the accelerated carbonation contributed to the mechanical strength improvement of steel slag bricks.
Julcour, et al, Understanding the Chemistry of Direct Aqueous Carbonation with Additives through Geochemical Modeling, J.

Pure titanium undergoes a transition from a hexagonal close-packed structure (α-phase) to a cubic structure (β-phase) at 883°C.
It remains in this crystallographic structure until melting at 1672°C [3, 4].
The reason for this was found in inhomogeneous material structure.
U.: Ullman's Encyclopedia of Industrial Chemistry, (Eds.: B.

As tubular structures, they have unusual capillary properties.
Theoretical calculations of their electronic structure indicate that single-walled carbon nanotubes are either metallic conductors, or semiconductors, depending on the diameter and helicity of the individual tubes.
Because of their mesoscopic structure, carbon nanotubes may exhibit quantum effects arising from their small diameter (≤10nm). [2-8] Recently, synthesis and investigation of electrical properties of composites based on polymer matrices and graphitized carbon species, including CNTs, are very popular topics in the field of materials science, and therefore, are of theoretical and practical interest.
Because of their mesoscopic structure, carbon nanotubes may exhibit quantum effects arising from their small diameter (≤10nm).
In order to modify the surface chemistry, the carbon nanotubes were subjected to an oxidation treatment before surface activation.

These narrow bands of the soft structure without any precipitate feature a lower resistance to plastic deformation than the rest of the matrix structure and will induce rapid nucleation and growth of voids.
Especially, the effect of chemistry was carefully investigated considering microalloying with Nb, V, Ti or a combination of these, with the concurrent effects of Al, N and C [4-15].
The interrupted tensile tests were performed by using an experimental setup that allowed a rapid heating of the samples and their rapid quenching right after straining, in order to "freeze" the steel structure existing at high temperature just after straining for microstructural analyses.
Small cracks can be identified in the steel structure, especially in the steels A and C2.

The results of the study could provide a theoretical basis for the restoration of the structure and function of aquatic ecosystems.
Discussion The environmental condition has the tremendous influence to plant's shape structure.
The plant shape structure change frequently reflects plant's under controlled condition growth condition.
After the experiment starts, the resistance mechanism is started, The plant SOD, POD, CAT activity elevates along with the nutritional level elevates, eliminates in the cell body active oxygen ability to enhance, the protective film normal structure and the function, resist the adverse circumstance coercion.
The Principle and Measuring Technique of Plant Physiology and Chemistry.

Sol-gel chemistry is based on the hydrolysis and condensation of precursors.
As a result, their network is too dense to obtain a good porous structure.
X-ray diffraction (XRD) patterns were recorded on a BRUKER AXS: D8DISCOVER system using Cu Ka radiation to analyze the crystal structure.
When calcined at 900°C (unshown), the Si-O-Si bands, however, are sharpened and shifted to higher wavenumber, indicating the formation of dense silica structure.
The base-catalyzed photographs show tightly-packed and uniform silica particles when calcined at 600°C due to the sintering effects, which produce the mesoporous structure.

As we can see chamber's structure from Fig. 1, there is a lid with good sealing covering on the top of the chamber which is convenient to dismantle and to place the testing tools.
Fig.1 Structure of the chamber The key technology and solutions of the temperature control module: At present, the constant temperature boxes working under the normal temperature on the market are mostly equipped with mechanical refrigeration devices.
These boxes are of high price due to their complicated structure and huge size.
Fig.2 System structure Power module.
Wu, et al: Chinese Journal of Analytical Chemistry (Science Publishing Company, China 2006), p103-p104