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A Brief Study of Ready-Mix Concrete

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A Brief Study of Ready-Mix Concrete
Study on Ready-Mix Concrete with Survey and Experiments in the Context of Bangladesh
A. S. M. Fahad Hossain1. Dr. Md. Mahmudur Rahman2.
Abstract : The research study conducted here is focused on the ready mix concrete (RMC) in the context of Bangladesh. At present time ready mix concrete (RMC) is a very important subject of interest. In foreign countries most of the construction work is carried out by ready mix concrete. In the present study, it was tried to find out the condition of ready mix concrete company of Bangladesh and their products.
Experiments as well as questionnaire survey were carried out to achieve the goal. Using a questionnaire form a detailed survey was done on several popular RMC companies of Bangladesh and their factories. The survey study dealt with a number of useful information such as the materials used for RMC, production volume, the manufacturing & transportation process etc. For experimental purpose fresh RMC of different companies was collected and afterwards tested in the Concrete Laboratory of Ahsanullah University of Science & technology. From the survey results, it is seen that in our country also the use of RMC is quite high & is being increased. Also most of the company’s RMC reached the target strength as found from the test result. However, some RMC samples failed to reach target strength.
Keywords: Concrete technology, Ready mix concrete, Questionnaire survey, Quality control.

Introduction
A concrete whose constituents are weight batched at a central batching plant, mixed either at the plant itself or in truck mixers, and then transported to the construction site and delivered in a condition ready to use, is termed as READY
MIXED CONCRETE (RMC) [1]. The technique of RMC is useful in congested sites or at diverse work places and saves the consumer from the botherations of procurement, storage and handling of concrete materials. RMC has a number of advantages over normal concrete. Due to its durability, time

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