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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur Paduraksa : Jurnal Teknik Sipil Universitas Warmadewa Bangunan Civil Engineering Dimension BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Journal Innovation of Civil Engineering (JICE) JAPI: Jurnal Akses Pengabdian Indonesia
Puput Risdanareni
Universitas Negeri Malang
Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Energy Engineering Environmental Science Health Professions Nursing Public Health Transportation Other

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Journal : Civil Engineering Dimension

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Effect of the Use of Metakaolin Artificial Lightweight Aggregate on the Properties of Structural Lightweight Concrete Puput Risdanareni; Afif Achsanul Choiri; Boedya Djatmika; Poppy Puspitasari
Civil Engineering Dimension Vol. 19 No. 2 (2017): SEPTEMBER 2017
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (425.241 KB) | DOI: 10.9744/ced.19.2.86-92

Abstract

This paper investigates the effect of using metakaolin Artificial Lightweight Aggre­gates (ALWA) as a substitute for coarse aggregates to produce structural lightweight concrete. A combination of 10M NaOH solution and sodium silicate solution was used as alkali activator. The ratio between the metakaolin binder and the alkali activator used in producing metakaolin ALWA is 48%:52%, by mass. It is shown that metakaolin ALWA has higher abrasion and water absorption, and lower bulk density values compared to normal aggregates. To determine the effect of using metakaolin ALWA as coarse aggregates in concrete, three variations of ALWA dosages were used, i.e. 0%, 50%, and 100% of the total coarse aggregates, by volume. The results show that the compressive strength of concrete decreased along with the increase of ALWA content in the mixture. However, concrete using 100% ALWA as coarse aggregates meets the requirements of compressive strength and density of structural light weight concrete.
Capillary Imbibition of Concrete Containing Cold Bonded Fly Ash-Based Lightweight Aggregate in a Salt Environment Risdanareni, Puput; Sulton, Mohammad; Nindyawati, Nindyawati; Rosyidi, Ditya Hafidz; Ekaputri, Januarti Jaya; Razak, Rafiza Binti Abd.; Abdullah, Mohd Mustafa Al Bakri
Civil Engineering Dimension Vol. 28 No. 1 (2026): MARCH 2026
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/ced.28.1.23-33

Abstract

Cold bonded lightweight aggregate generated from fly ash (FA LWA) has become an interesting approach to increase the consumption of fly ash and prevent over-mining of natural aggregate. However, using the cold-bonded hardening method could increase the number of open pores in LWA, making the concrete containing this LWA face an increased risk of degradation due to water ingress. Thus, in this research, the effect of using FA LWA in concrete on the mechanical and transport properties in a salt environment is being investigated. Three aggregate replacement ratios of 0, 50, and 100% were applied, while the salt environment was mimicked with NaCl and Na2SO4 solutions. The results show that the optimum replacement rate of FA LWA was 50%. Regarding the transport properties, exposing concrete to a salt environment (NaCl or Na2SO4) proved to slow down the capillary imbibition rate slightly.
Co-Authors Abdullah, Mohd Mustafa Al Bakri Adi Susetyo Afif Achsanul Choiri B. Sri Umniati Bathista, Moch. Dhoni Boedya Djatmika Cynthia Permata Dewi Ditya Hafiz Rosyidi Dwi Prastiyo Handayani, Agil Fitri Januarti Jaya Ekaputri Mohammad Sulton Nindyawati Nindyawati Pertiwi, Ziza Ayu Razak, Rafiza Binti Abd. Rosyidi, Ditya Hafidz Rr. Poppy Puspitasari Sulasmono, Raden Ian Titi Rahayuningsih Titi Rahayuningsing Wardana, Erik Fadilah Kusuma