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Utilization of recycle paper mill residue and rice husk ash in production of light weight bricks

100%

Raut S. , Ralegaonkar R. , Mandavgane S.

tom Vol. 13, no. 2

269--275

Resource recovery and utilization of industrial by-product materials for making construction material has gained significant attention across the world. In this research study, recycle paper mill residue (RPMR) and rice husk ash (RHA) are utilized to improve the properties of bricks. This research study evaluated the feasibility of utilizing RPMR and RHA for making construction bricks. A homogeneous mixture of RPMR–RHA–cement was prepared with varying amount of RHA (10–20% by weight) and RPMR (70–80% by weight) and tested in accordance with the IS codes. Characterization of RPMR and RHA was performed using XRF, TG-DTA, XRD and SEM techniques. The SEM monographs show that RPMR has a porous and fibrous structure. The TG-DTA characterization demonstrated that RPMR can withstand temperatures up to 280 °C. The results indicate that RPMR-bricks prepared from RPMR–RHA–cement combination are light weight and meet compressive strength requirements of IS 1077-1992. This novel construction material serves objectives of resource recovery through prudent solid waste management.

Klocki LEGO - zabawka dla dzieci i afoli. Konteksty edukacyjne oraz pedagogiczne

100%

Nowak-Kluczyński K.

nr 69

77-96

LEGO bricks are undoubtedly one of the most famous and strong construction toy brands. The name comes from the Danish phrase “leg godt” which means “play well”. The company motto is: “Only the best is good enough”. The bricks have limitless capacities. They are used not only for playing but more and more often in the educational context, from kindergarten to universities. LEGO is creativity and play as well as stimulation of mental development. The bricks excite the imagination of both children and adults. In the therapy, they improve focus, concentration, logical thinking and improve small motor skills. Nowadays, they are encroaching the adult world boldly, because they have become strong icon of pop culture and the socially engaged “toy”. LEGO sets produced especially for AFOLs (the acronym of “an adult fan of LEGO”) strengthen hobby development. They are collector’s items as well as a sentimental journey to the childhood and, especially, a supporting gesture for marginalizing environments.