ABSTRACT
Polymer concretes (PCs) are known to be less permeable to water, but its usage is less popular in tropical countries like Nigeria because its common binder, thermoset resins, are very sensitive to rising temperature. This sensitivity to temperature accelerates the polymerization process and this jeopardizes its early strength development, thereby producing a PC with low workability and high porosity. To address this, polymer inhibitors with addition of Methyl Methacrylate (MMA) was introduced. Firstly characterization work on binder formulation was carried out by introducing Methyl Ethyl Ketone Peroxide (MEKP) and cobalt Naphthenate (CoNp) into the polyester resin as accelerators. Properties like density, specific gravity, particle size distribution, surface area, morphology and chemical composition were carried out on fillers. Sorghum Husk Ash (SHA) and calcium carbonate (CaCO3) were added as fillers. PC with optimum mix proportion at low binder (11%) and different filler contents (12, 14/ & 16%) were investigated under compressive test. Two types of PC (PC-SHA and PCCaCO3) with polyester binder were produced and its physical and mechanical properties were tested. PC-SHA gave highest compressive strength (56.6N/mn2 ) at 14% filler contents and least water absorption of 0.26% at 16% filler contents after 28 days as compared to compressive strength value of PC-CaCO3 (49.8N/mm2 ) and water absorption of 3.1% at 16% filler contents after 28 days. Conclusively, SHA is seen to be highly promising filler for PC after being modified by grinding
EXCERPT FROM THE STUDY
In this study, our focus was to carryout a critical analysis on determining the causal rela...
ABSTRACT
THE ROLE OF ACTIVITY-BASED COSTING IN BUSINESS OPERATIONS
This study explores the role of activity-based costing (ABC)...
Background of the study
As physical and time-consuming operations are digitalized,...
ABSTRACT: This research investigates the role of early childhood education in reducing malnutrition among young children. Educating children a...
ABSTRACT
This study was carried out to examine the the factors affecting reading culture of students in the university &...
ABSTRACT
The contribution of literature in modern African society is very enormous and imperative in view to contemporar...
Statement of the Problem
Previous studies have shown that normal pregnancy is associated with profound changes in haematological profile...
ABSTRACT
An area that brings problem continuously to second language (L2) learners of English is vocabulary development. Exposing words t...
Background to the study
Financial misappropriation is gaining attention throughout the world, with many...
ABSTRACT: This study examines the impact of international collaborations on vocational education, focusing on how partnerships with foreign in...