Penambahan Superplasticizer (0,4%) Dan Additive Air Entraining Agent Pada Campuran Beton Mutu fc’ 30 MPa.
Addition of Superplasticizer (0.4%) and Air Entraining Agent Additive to 30 MPa fc' Quality Concrete Mixture.
Pembangunan di Indonesia sudah sangat maju, sehingga mempengaruhi kemajuan bahan bangunan seperti beton. Dalam prakteknya, pengembangan bahan bangunan beton memerlukan suatu inovasi baru agar konstruksi dapat dilaksanakan dengan baik dan cepat. Inovasi teknologi beton selalu dituntut untuk menjawab tantangan permintaan, beton yang dihasilkan diharapkan memiliki mutu yang tinggi meliputi kekuatan dan keawetan tanpa mengabaikan nilai ekonomisnya. Tujuan dari penelitian ini untuk mengetahui kuat tekan beton silinder dengan rancang campur mutu fc’ 30Mpa dengan tambahan Air Entraining Agent. Berdasarkan brosur AEA, bahan tambah befungsi untuk mengurangi berat beton dan mengurangi pemakaian semen dalam campuran. Uji coba campuran beton dibagi dalam tiga perlakuan yaitu dengan dosis AEA masing-masing 0,03%, 0,06%, dan 0,14% dari berat semen. Komposisi bahan campuran beton tersusun atas 18,48 kg semen, 42,7 kg agregat halus, 22,14 kg agregat kasar ukuran 5-12 mm, 41,10 kg agregat kasar ukuran 10-20 mm, air 5,98 kg. Hasil pengujian kuat tekan beton silinder dengan 0,03% bahan tambah AEA sebesar 30,95 MPa. Kuat tekan beton silinder dengan 0,06% bahan tambah AEA sebesar 29,10 MPa. Kuat tekan beton silinder dengan 0,14% bahan tambah AEA sebesar 26,55 MPa. Hasil pengujian berat beton tanpa bahan tambah sebesar 12,385g. Berat beton dengan 0,14% bahan tambah AEA sebesar 10,065g. Berat beton dengan 0,06% bahan tambah AEA sebesar 11,710g. Berat beton dengan 0.03% bahan tambah AEA sebesar 12,170g. Semakin banyak penambahan Air Entraining Agent vii mengakibatkan penurunan kuat tekan dan berat pada beton..
Kata kunci : bahan tambah Air Entraining Agent, kuat tekan, Beton.
Development in Indonesia has been very advanced, thus affecting the progress of building materials such as concrete. In practice, the development of concrete building materials requires a new innovation so that construction can be carried out properly and quickly. Concrete technological innovation is always required to answer the demand challenges, the resulting concrete is expected to have high quality including strength and durability without neglecting its economic value. The purpose of this study was to determine the compressive strength of cylindrical concrete with mixed design fc' 30Mpa with the addition of Air Entraining Agent. Based on the AEA brochure, added materials function to reduce the weight of concrete and reduce the use of cement in the mix. The concrete mix trials were divided into three treatments, namely with AEA doses of 0.03%, 0.06% and 0.14% respectively by weight of cement. The composition of the concrete mixture consists of 18.48 kg of cement, 42.7 kg of fine aggregate, 22.14 kg of coarse aggregate of 5-12 mm size, 41.10 kg of coarse aggregate of 10-20 mm size, 5.98 kg of water. The compressive strength test results for cylindrical concrete with 0.03% AEA added material were 30.95 MPa. The compressive strength of cylindrical concrete with 0.06% added AEA is 29.10 MPa. The compressive strength of cylindrical concrete with 0.14% added AEA is 26.55 MPa. The results of testing the weight of concrete without added ingredients were 12.385g. The weight of concrete with 0.14% added AEA is 10.065g. The weight of concrete with 0.06% added AEA is 11.710g. The weight of concrete with 0.03% added AEA is 12.170g. The more addition of Air Entraining Agent results in a decrease in the compressive strength and weight of the concrete.
Keywords: additives, compressive strength, Air Entraining Agent.