Campos, Roze Anne G.  <br/><br/>
Effects of powdered engshells as partial cement substitute in flexural strength of cement mortar/  
Roze Anne G. Campos, Andrea Grace B. Casas, Mariel Mikah B. Jaranilla, Justiine Joy A. Maderazo, Warren P. Manaog, Ma. Sophie Diana T. Mosquera .-- 
 - Manila:   Technological University of the Philippiines,   2022. 
 - ix, 93pages:   29cm.   +1 CD-ROM (4 3/4in.)  
<br/><br/> Thesis (undergraduate)  
<br/><br/>College of Industrial Technology .-- 
<br/><br/>Includes bibliography:  
<br/><br/> Cement is a nonrenewable resource, and its high demand is due to ongoing exploration to<br/>meet the development goal. These could lead to natural resource depletion without<br/>replacement, resulting in a severe environmental crisis in the future. Because of this risk, alternative construction materials resources must be investigated for replacement<br/>purposes. Because cement mortar is a critical element of masonry construction, the rising<br/>demand for cement has converted the cement industry into the second greatest<br/>greenhouse gas producer, contributing to global warming. Raw material such as eggshells<br/>is introduced as a partial substitute for cement in the construction field. Therefore, this<br/>paper aims to present mortar's water absorption and flexural strength by incorporating<br/>powdered eggshells. Powdered eggshell was used as a partial substitute for cement-based<br/>mortar in four mortar mixtures of 0%, 8%, 10%, and 13% of powdered eggshell. A total<br/>of 24 mortar cubes were prepared, with six mortar samples for each mixture. All of the<br/>specimens are cured in the air. Each mixture of mortar consists of 1 sample for the water<br/>absorption test and 5 samples for the flexural test at 24 hours. The result obtained that<br/>13% partial substitution of cement with powdered eggshell produced the highest flexural<br/>strength compared to the controlled mixture but only third on the water absorption. The<br/>powdered eggshell as a partial substitute for cement in producing mortar still presented<br/>the opposite relationship between flexural strength and water absorption, and this<br/>experimentation possesses the potential to be used as sustainable construction materials. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Construction technology <br/>Construction materials <br/>Civil engineering 
<br/><br/><label>LC Class. No.: </label>BTH TH 438  / C36 2022