Iskandar, Tommi (2023) Perbandingan Kuat Tekan Paving Block Dengan Dua Tipe Semen. Other thesis, Universitas Islam Riau.

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Abstract

Paving Block (Concrete Brick) is a building material composition made from a mixture of cement or similar hydraulic adhesive, water, and aggregate with or other added materials (SNI 03-0691-1996). In this comparison test, two different types of cement will be used to make paving blocks. Each type of cement has different characteristics and can have a different effect on the compressive strength of paving blocks. The aim of the research is to find out the comparison of the compressive strength of two different types of cement. This research was carried out using the experimental method of comparing compressive strength and water absorption capacity with PCC and Portland Type 1 based on SNI 03-0691-1996. There are 6 experimental samples that will be made, including using PCC cement and 3 more using Portland Type 1 cement. The test object is square with dimensions of 10.5 cm x 10.5 cm x 10.5 cm. Compressive strength and water absorption tests were carried out at the age of 28 days. This research uses a mixture composition with a percentage of 30% PCC cement type, and variations of 70% sand and 0% stone ash, 65% and 5% stone ash, 60% sand and 10% stone ash. And the percentage of Portland cement type 1 is 30%, and variations of sand 70% and stone ash 0%, 65% and stone ash 5%, 60 sand and stone ash 10%. The results of the average compressive strength of paving blocks aged 28 days using PCC cement type with the addition of 0%, 5% and 10% stone ash, namely with quality B, 311.3 kg/cm2, B 328.3 kg/cm2, and quality A 369.9 kg/cm2. Meanwhile, we use Portland cement type 1 with the addition of 0%, 5% and 10% stone ash, namely with quality B, 317.5 kg/cm2, B 331.4 kg/cm2, and quality A, 376.1 kg/cm2. cm2. The water absorption of paving blocks at the age of 28 days increased with each variation in the addition of stone ash by 0%, 5%, 10%, whether using PCC cement or Portland cement type 1. The results of the water absorption test using the PCC type were 0.76% , 0.87%, 1.36%, and water absorption testing using Portland type 1, namely 1.23%, 1.53%, 2.34%. The conclusion from the results of the comparison of compressive strength and water absorption obtained is of compressive strength, namely 6.2 Kg/cm2, 3.2 Kg/cm2, 6.2 Kg/cm2, and the results of the comparison of water absorption capacity are 0.47%, 0.66%, and 0.98. The conclusion is that the use of each additional stone ash in compressive strength testing with PCC cement types has increased, and the use of each additional stone ash in compressive strength testing with Portland cement type 1 has also increased. Meanwhile, the results of water absorption show that the greater the variation in the use of stone ash in the paving block mixture, the greater the absorption of the paving block.

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