ABSTRACT
In the recent time effort has been made to replace Portland Cement (PC) wholly, thus producing an alternative binder. This innovation could be due to environmental challenges attributed to the green-house gas emission coupled with energy intensity and consumption associated with PC production. The use of Rice Husk Ash (RHA) and Calcium Carbide Waste (CCW) as a binder in the production of mortar has revealed positive results with some drawbacks such as poor initial setting time (IST), final setting time (FST) and early strength gain. This study therefore target at inclusion of silica-Nano particle (SNP) and superplasticizer in RHA-CCW binder with a view to evaluate the influence of SNP inclusion of its performance characteristics. Silica-Nano Particles were extracted by chemical leaching of the RHA and so was the physical and chemical properties of the constituents materials determined before the assessment of the fresh properties of the binder paste. Mortar specimen were thereby made with 60:40 RHACCW binder containing varied SNP contents (i.e. 0 to 5 % at 0.5 step increment) for 1:3 binder/sand mix of 0.5 W/B ratio. This was tested for compressive strength, water absorption and abrasion resistance at various curing ages in accordance with BS EN 196- 1:2016 for Strength of cement and other established standards. The results shows mortar specimen of 60:40 RHA-CCW binder containing 3% SNP has the best performance in compressive strength (having 28 56 and 90 days values of 10.94, 13.50 and 15.75 N/mm2 ) representing an increase in strength 40, 63 and 80 % when compared to the RHA-CCW without SNP. 3% SNP addition in 60:40 RHA-CCW binder at 60/40 1:3 binder sand mortar, with 0.5W/B and 1.5% Superplasticizer by weight of binder was thereby recommended for masonry operations as it conforms to Class N of ASTM C270.
Background of the study
Technical and vocational education is used as a comprehensive term in the educa...
The Nigerian stock exchange (NSE) has been created to serve various function such as often of business guideline to top busine...
ABSTRACT
The research was undertaken to study the impact of information and community technology on classroom teaching a...
ABSTRACT
The study examines and conceptualizes accumulation in the context of Nigeria‟s neocolonial state. It investigates the nature of...
Abstract
This study is designed to examine how effectively Christian Handbill and posters in Abuja comm...
ABSTRACT
Taxation is the key to a sustainable development. This is because no government can survive without sufficient revenue to financ...
STATEMENT OF PROBLEM
Presently, the rate of misbehaviour among pupils is a...
ABSTRACT
Comparative examination of three main sources of water supply in Independence layout Enugu was carried out with a view to determ...
ABSTRACT
The notion that art reflects reality is an ideology set upon works of art to influence the perception of the audience to decode...
ABSTRACT
This study was designed to assess the knowledge, attitude and adoption of appropriate infant&n...