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A Comparative Study Of The Compressive Strength Of Concrete Hollow Blocks Using River And Sea Sands

Author: 
Tessie A. Guial and Dennis A. Jalbay
Subject Area: 
Life Sciences
Abstract: 

This study was conducted at Engineering Laboratory Building of ESSU-Salcedo Campus, Salcedo, Eastern Samar. Specifically, this study was concerned with the following objectives: (1) To determine the weight of the Concrete Hollow Block (CHB) using river and sea sands, (2) To determine the compressive strength of CHB using river and sea sands, and (3) To determine the significant difference between the compressive strength of CHB using river and sea sands with a varying amount of fine aggregates of 100%, 50%, and 33.33%. The amount of fine aggregate varies in each level of treatment considering the workability of the mixture. Seven (7) levels of treatments were replicated five (5) time. Weighing and Compressive Testing was carried out using thirty-five (35) pieces whole concrete hollow block samples. Result of the study revealed that the initial weight was 10,790 grams and a maximum of 11,645 grams. The initial crushing strength gained 2.4 MPa (384.11 psi) and a maximum of 4.7 MPa (681.71 psi). Thirty four (34) CHBs surpassed the standard individual compressive strength of 350 psi and all treatments surpassed the standard average compressive strength of 300 psi. The compressive values obtained from the specimens were above the standard. It was found out that treatment two (T2) gained the highest compressive strength of 4.20 MPa (609.20 psi) contained with white sea sand inert material.

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