Overview of Constructability Improvement through Innovations in Construction Methods during Construction Phase

What is constructability? Construction Industry Institute (CII) defines 'constructability' is the "optimum utilization of knowledge and construction experience into the planning, design, procurement and construction phase to achieve overall project objectives". CII developed the concept constructability  in 1983, the Business Roundtable's Cicé conduct studies within 4 years to improve the quality, efficiency, productivity and compliance costs in the construction industry. The results are summarized in a report given the title "Integrating"...

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Brief History of Readymix Industry in Indonesia

Bagaimana sejatinya sejarah perkembangan 'beton siap pakai' atau readymix dimulai? Sejak ditemukannya cement pozzolan perkembangan penggunaan beton untuk struktur bangunan semakin pesat. Kebutuhan akan ketepatan pengiriman dan konsistensi mutu beton menjadi penting. Readymix adalah pilihannya. Definisi Beton Siap Pakai atau Readymix Concrete menurut SNI 03-4433-1997/ASTM C94-96 adalah Beton...

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Factors Affecting to High Cement Content in Concrete Mix Design

  Introduction Generally concrete ingredients consist cement, fine aggregate, coarse aggregate and solvent water. Some additional additive or other materials for increase the concrete performance. In The project of Construction Road Sindhuli-Nepalthok Section 3 NEPAL the source of material aggregate is explored from the riverbed of Sunkhosi river from borrow pit sta. 1+000, sta 18+000,...

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Managing Temperature in Mass Concrete Pouring

  Scope The primary characteristic that makes mass concrete different from other concrete work is thermal behavior. Cement hydration process is exothermic by nature, in large mass concrete where the heat is not quickly dissipated, temperature rise can be quite high. Tensile stress may develop from the volume change due to the increase and decrease of temperature within the mass. A structure or...

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Main Priority Factors Causing Nonconforming Product (NCP) On Readymix Concrete Product

American Concrete Institute (ACI) Manual of Concrete Practice Part-1 defines ready-mix concrete (RMC) as concrete made for customer or purchaser in plastic and unhardened state. Many complaints from customers in relation with nonconforming products (NCP) requires RMC producers to improve the quality of RMC. One of its efforts is to find out the main problems of nonconforming products. An investigation...

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How to Handling Volume Complains from Customers

“Pak volume beton kok kurang, hitungan saya sekian kubik padahal volume tulangan sudah saya abaikan, gimana nich!” komplain diatas sering terlontar dari customer. Memang banyak faktor sehubungan dengan kekurangan volume beton yang sudah terkirim. Kekurangan barangkali akibat kesalahan hitung pencampuran, misalnya seharusnya 4.5 m3 di mixing hanya 4 m3, meskipun hal ini jarang terjadi.Mengapa masalah komplain volume kadang terjadi? Dalam AS 1379 dikatakan bahwa volume yang telah diukur dilapangan bisa berbeda dengan volume dari beton segar (fresh...

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