![]() ![]() The results obtained and conclusion made in this study can only be compared to the properties of bricks produced under similar conditions with similar raw materials. From these points of view, it is concluded that the quality of the environmentally friendly brick KAB is better. From the observation of different properties, it is seen that, homogeneity of the Hoffman kiln brick KAB is not perfectly homogeneous and contains small internal porosity the incremental water intrusion area is very poor, and the water penetrating height through the two edges is higher than the middle part the initial rapid absorption (IRA) rate is also very poor and the water penetrating behavior of the samples is different as like as stair, capillary, wave and zigzag shape. From these measurements, the porosity, water penetrating height, water penetrating behavior, initial rapid absorption of water (IRA), elemental distribution/homogeneity and incremental water intrusion area in the sample have been found. In this case, optical density/gray values of the neutron radiographic images of the sample have been measured. Measurements were made to determine the internal structure and quality of the automated machine made environmentally friendly brick sample. ![]() Thermal neutron radiography facility installed at the tangential beam port of 3 MW TRIGA Mark-II Research Reactor, AERE, Savar, Dhaka, Bangladesh is used in the present study. Neutron radiography (NR) technique has been adopted to study the internal structure and quality of the KAB bricks made by Hoffman kiln method. Finally, the perspectives of epoxy resin for overall use in building materials and also in specific applications such as repairing of building, the protection of constructions from flood, saline water, and prevention of liquid from penetration into interior of materials have been discussed. Experimental results show that epoxy resin-based concrete exhibits high compressive strength, less chloride-ion permeation and high chemical resistance to the corrosive environment. Performance of the epoxy resin as a protective coating on rebar has also been discussed. Some ambiguous results on epoxy resin-based concrete available in the literature have been verified in the laboratory, and the confusions have been diffused. Challenges on the use of epoxy resin in the concrete and masonry mortar composition and contribution of the resin on the mechanical and physical properties of building materials have been described. ![]() Literature survey reveals that the properties of concrete could be improved significantly with the variation of concentration of the epoxy resin in the composition of polymer-modified concrete (PMC), and that makes the PMC very versatile in applications. It reviews in brief the growth of epoxy resin-based high-performance concrete and masonry mortar technology, and epoxy resin as protective coating on mild-steel bar (rebar) for concrete reinforcement. This paper describes the role of epoxy resin in the development of advanced building materials. Finally it was concluded that homogeneity, elemental distribution in the EPS aggregate poly brick sample is better than that of the aerated brick sample. From this measurement it is found that the neutron intensity/optical density variation with the pixel distance of the AOI of the NR images in both expanded polystyrene (EPS) aggregate poly brick and aerated brick samples comply almost same in nature with respect to the whole AOI but individually each AOI shows different nature from one AOI to another and it confirms that the elemental distribution within a AOI is almost homogeneous. In the present study the internal defects like homogeneity, porosity, elemental distribution, EPS aggregate and aerator distributor in the test samples have been observed by the measurement of gray value/optical density of the neutron radiographic images of these samples. A powerful non-destructive testing (NDT) technique is adopted to study the internal defects and elemental distribution/homogeneity and porosity of aerated brick and EPS aggregate poly brick samples. ![]()
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