This paper aims to evaluate mechanical behavior (compressive and flexural strength) of reactive powder concrete (RPC) with ferronickel slag (FNS) as quartz sand replacement. Standard laboratory tests were performed i.e. sieve analysis to determine the particle size distribution of the FNS, slump and density tests as well as compressive and flexural tests on the RPC. Promising results were obtained in this study. An increased consistency and density were observed upon increasing the FNS content. The utilization of FNS could lead to a compressive strength value of 86 MPa at 28 days. A higher strength enhancement in the early curing days (7 days) was observed than in the longer curing days (28 days), when FNS mixes were compared to reference mixes. The flexural strength result demonstrated two different phenomena at two different ages, where there was a slight rise at 7 days and relatively no increment at 28 days when FNS mixes were compared to the reference mixture.
One of the thermal behaviors of bricks on building walls might store heat in large amounts and delay it to be re-released. This performance will consequently prevail over the building’s environment, comprising the Urban Heat Island (UHI) phenomenon. Hence mitigation technology for controlling and managing heat gain is required to reduce the effect of UHI. Various research has studied this phenomenon mainly from orientation and the several types of wall insulation for sundry types of climates. However, it has not been significantly scrutinized from the green wall and metal panel wall viewpoint. This study aims to discern the thermal behavior of regular building brick walls using 3 (three) types of walls, i.e., conventional brick walls, metal-panel wall technology such as Aluminum Composite Panel (ACP) without air gap, and green walls technology by planting the vines in a trellised container with a sandy loam substrate. ENVI-met V4 software is performed for simulation by modeling a house building measuring 8 meters long, 6 meters wide, and 5 meters high. Metal panels and green walls are installed on all brick walls on the building’s west and east sides. The parameter observed was the surface temperature of walls and the air temperature pattern by introducing fixed wind speed (0,1 m/s). In the daytime, the results showed that using the technology intervention with ACP provided better results in terms of lower surface temperature than other types with a 0,6 – 6,7 % difference due to its conductive properties in storing heat. Moreover, green wall intervention utilizing vegetation yields better performance in the nighttime with a 0,3 – 3% difference as the Ivy Hadera is holding the heat during that time. Green wall intervention also evinces significant temperature rising at 09.00 – 16.00 since the Ivy Hadera vegetation has relatively sparse leaf space; hence there is a considerable amount of heat radiation reaching through the walls, and there is evapotranspiration of the vegetation causing heat release to the atmosphere.
This study performed investigation of physical and mechanical properties of hollow brick design with sago husk as filler and its combination with 10% bottom ash. As previous works showed excellent result in those properties, and 5.6 MPa gap for compressive strength with the minimum requirement, it was expected that hollow design of bricks still provided good results. Six models of hollow bricks were developed by considering stress concentration factor that might affect compressive strength. Those models were examined with three composition of sago husk filler, i.e. 1.1%, 2.2% and 2.5%. Similar method of production was conducted. It can be concluded from the result that all developed models could be used for both structural and non-structural element of wall housing. The bulk density varied from 1.3 to 1.8 kg/cm 3 and the IRA was approximately 0.18%. Therefore, utilization of hollow brick design for building will provide better performance in terms of strength and building weight.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.