Investigation on the compressive strength and bulk density of concrete hollow blocks with low density polyethylene (LDPE) pellets as partial replacement for sand

Date

12-2014

Degree

Bachelor of Science in Civil Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Jonathan David D. Lasco

Abstract

Recycling should e viewed as pone of the solutions to ease the aggravating problem on a solid waste, particularly waste plastic, management in the country. This study explored a possible venue for recycling, which is integrating waste plastic into concrete hollow blocks. The study aimed to do the following :(a) determine the compressive strength and bulk density of concrete hollow bocks with LDPE pellets as partial replacement for sand,(b) compare the compressive strength and bulk density obtained to the standards as set by ASTM c90 and ASTM c129, and (c) to compare the prices of the specimens to the cost of standard production. Forty specimens of concrete hollow blocks of varying percentage of LDPE replacement (O%, 10%. 20%, 30% and 40% were molded and cured for 28 days. Twenty-five specimens were tested for compressive strength using a Universal Testing Machine. Fifteen specimens were tested using water displacement method. Results showed that as the percentage of LDPE pellets increases, the compressive strength of the concrete hollow blocks decreases, except for the specimens with 10% LDPE replacement which yielded an increase in compressive strength. Moreover, that as the percentage of LDPE pellets increases, the bulk density of the concrete hollow block decrease. It was concluded that LDPE, at 10% replacement is a good partial replacement for sand, assuming the limits set by the economic analysis are met.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993.5 2014 E63 /D67

Document Type

Thesis

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