Tamcem 8R Normet Additive Addition in the use of Concrete Pumps
Abstract
The aim of the study was to determine the use of the Additive Normen Tamcem 8R on the compressive strength of concrete and to determine the percentage of the compressive strength of concrete in normal concrete and in concrete with the Additive Normen Tamcem 8R.
This research was conducted from March to June 2020 at the Laboratory of the Faculty of Engineering, University of 17 August 1945 Samarinda.
The stages of the research are as follows: literature study, preparation, taking samples or test materials in the field, preparing for laboratory testing, making mix designs, making concrete mixes, slump testing, making test materials, treating test objects, compressive strength testing, analysis, and reporting.
The results showed that (1) the average compressive strength of normal concrete was 275.99 kg/cm2 and the compressive strength of mixed concrete was 285.80 kg/cm2 and (2) the percentage ratio of compressive strength of concrete under normal conditions and the use of additive norms Tamcem 8R 400 ml is as big as 1.76%.
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Introduction
Concrete is a construction that is very important and most dominantly used in building structures. Buildings are constructed using concrete as the main construction material, both buildings, water structures, transportation infrastructure buildings and other buildings.
Concrete is in great demand because it has many advantages compared to others. Concrete technological innovation is always required to develop in order to answer the challenges of concrete needs, the concrete produced should have good qualities such as strength and durability without neglecting economic value (Aman, et al. 2017).
The concrete material used in construction projects consists of fine aggregate, coarse aggregate, cement and water (Mulyono, 2003), these materials are mixed with a certain composition ratio to produce a certain concrete strength.
High rise building construction projects are growing. This development will surely be followed by the implementation of more sophisticated equipment technology which will certainly help the implementation run smoothly. Widely used tool in the current construction project is a concrete pump (Limanto, 2009).
Conclusion
Based on the test results on normal concrete with a total of 60 cylinders measuring 15 cm x 30 cm, with a design compressive strength of k-250 kg/cm2 or the equivalent of f'c 20.75 MPa, it is concluded that:
1. The percentage of concrete compressive strength in normal conditions and the use of Additive Normet Tamcem 8R 400 ml is 1.76%.
2. The average compressive strength of normal concrete is 275.99 kg/cm2 and the compressive strength of mixed concrete is 285.80 kg/cm2 .