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All Journal Jurnal Penelitian Saintek Inersia : Jurnal Teknik Sipil dan Arsitektur JPTK: Jurnal Pendidikan Teknologi dan Kejuruan Indonesian Journal Of Civil Engineering Education

Agus Santoso

Dosen Jurusan Pendidikan Teknik Sipil dan Perencanaan FT UNY

Author-ID : 2909045

Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Education Other

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ANALYSIS OF MIX DESIGN BETON HOW DOE (ENGLISH) AND ACI (AMERICA) Agus Santoso
Jurnal Penelitian Saintek Vol 7, No 1: April 2002
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

This research was aimed to describe concrete mix design using British DOE and American AC/ methods viewedfrom concrete compressive strength and cost per-m', The mix design research used materials of sand and split from Krasak River, Nusantara brand Portland cement, and ground water from Faculty of Engineering UNY They were 10 samples each methods of (J 5 x15 x 15) em dimension. The data were collected by meant of experiment in the Laboratory of Building Materials, Faculty of Engineering, UNY, and analyzed descriptively. The results were that, to design concrete with K.225 characteristic, the DOE method required mix composition of PC : sand: split = I : 1,58: 3,49 with slump = 13 em, the average weight of concrete cubes = 8,066 kgs and characteristic of compressive strength = 263,1 kg/em". The ACI method required mix composition of PC: sand: split = I: 2,24: 3,12, with slump = tcm (slightly over the design value), the average weight of concrete cubes = 8,215 kgs, and characteristic of compressive strength = 284,73 kg/em', Based on the cost analysis, per-cube, the DOE method cost was Rp 215.906,- and the ACI method cost was Rp 195.791,-.. From the analysis, in general the AC/ method was more effective as well as efficient than DOE method.

PERFORMANCE OPTIMIZATION OF BEAM CONCRETE BEAMS TO INCREASE BUILDING STRUCTURE PERFORMANCE IN EARTHQUAKE AREA Agus Santoso; Slamet Widodo; Nuryadin Eko Raharjo
Jurnal Penelitian Saintek Vol 15, No 2: Oktober 2010
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

The paper summarizes the experimental result of flexural capacity of full scale reinforced concrete beam prepared as a composite members consisting of two concrete layers made of Hybrid Fiber Reinforced Concrete (HFRC) and High Strength Concrete (HSC). Compressive strength and modulus of elasticity test, splitting tensile, flexural tensile tests conducted to identify the important mechanical properties of both HFRC and HSC. Every mechanical properties data collected using 3 standard samples based on ASTM and SNI codes. 15 reinforced concrete beams in 150x250x2400 mm dimensions, usedfor full scale flexural test of structural RC beam. The tests conducted on 5 types of composite beam: 100%, 75%, 50%, 25%, and 0% of HSC cross sectional depth, combined with HFRC for the opposite sides.The experimental results indicated that HFRC shows higher modulus elasticity compared with HSC, it was 28618,611MPafor HFRC, and 21790,660 MPafor HSC. All types of composite members and full depth of HFRC shows higher first crack load capacity compared with HSC structural reinforced concrete beam. The first crack load capacity increase ranging from 29,753% up to 33,267%. All types of composite members and full depth of HFRC also shows higher maximum load capacity compared with HSC structural reinforced concrete beam. The first crack load capacity increase ranging from 11,284% up to 16,03%. Based on the experimental test results, it can be suggested to apply partial depth of HSC and HFRC; 50% HSC and 50% HFRC on static determinate RC beam.Keywords: Composite Reinforced Concrete Beam, HFRC, HSC, Full Scale Flexural Test

Co-Authors Faqih Ma’arif Hasdi Nur Pratomo Nuryadin Eko Raharjo Slamet Widodo Wisnu Rachmad Prihadi

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