Experimental Study of Bamboo As A House Retrofitting Material For Developing Countries

Abstract

Earthquake is one of the main natural disasters which frequently occur in West Sumatra. Large earthquake September 30, 2009, has caused damage to the structure and caused many casualties. Due to this condition, this research was made to study bamboo as a house retrofitting material for developing countries. Mechanical and physical properties such as moisture content testing, testing density, testing of compressive strength and tensile strength were conducted. It is obtained from the test results, the highest compressive strength and tensile strength are 94.958 MPa and 183 MPa, showed by Betung bamboo. Shaking table test are also undertaken to investigate the seismic behavior of bamboo masonry wall. Two degree of masonry walls, 60° and 90° are tested in order to check the strength of masonry wall by direction of the coming of an earthquake. From the shaking table test, it was observed that a 60° masonry wall showed a better seismic performance than those of a 90° masonry walls. Small cracks were observed at 90° masonry walls after 20 seconds, while there was no crack at a 60° masonry wall. As a result of these test, using bamboo as a house retrofitting material could be chosen, both of technically and economically.

Mulberry Leaves (Morus Rubra)‐Derived Blue‐Emissive Carbon Dots Fed to Silkworms to Produce Augmented Silk Applicable for the Ratiometric Detection of Dopamine

“…The specimens for the analysis were prepared according to ASTM C1557. [ 89 ] The quantum yield (QY) and limit of detection (LOD) were calculated as per the previous reports. [ 40,44 ]…”

“…The specimens for the analysis were prepared according to ASTM C1557. [89] The quantum yield (QY) and limit of detection (LOD) were calculated as per the previous reports. [40,44] Feeding Method of Silkworms with MB-CDs: Silkworm was an invertebrate model with the advantages of convenience and low cost and has no ethical issues related to its usage in biomedical studies.…”

Abaca Fiber as a Potential Reinforcer for Acoustic Absorption Material at Middle-High Frequencies

“…Abaca fibers have been scientifically proven to possess high mechanical properties [22][23][24]. These fibers can be applied as reinforcements in polymer matrices [17,32,52,64].…”

“…The chemical components of abaca fiber include cellulose (56%-66%), hemicellulose (20%-25%), and lignin (7%-13%) [21,22]. The mechanical properties of abaca fibers are impressive, featuring a tensile strength of 400-980 MPa, an elasticity modulus of 6.2-20 GPa, and an elongation of 1%-10% [22][23][24][25]. Cellulose, a natural organic polymer, exhibits the most crystalline structure among these components, which leads to the enhanced mechanical characteristics of abaca fibers [21,22,26].…”