Total = (100%) - Undip PAK Repository

LEMBAR

HASIL PENILAIAN SEJAWAT SEBIDANG ATAU PEER REVIEW KARYA ILMIAH : PROSIDING

Kategori Publikasi Makalah : √ Prosiding Forum Ilmiah Internasional (beri pada kategori yang tepat) Prosiding Forum Ilmiah Nasional Hasil Penilaian Peer Review :

Komponen Yang Dinilai

Nilai Reviewer

Nilai Rata- rata Reviewer I Reviewer II

a. Kelengkapan unsur isi jurnal (10%) 2.01

b. Ruang lingkup dan kedalaman pembahasan (30%) 6.15

c. Kecukupan dan kemutahiran data/informasi dan

metodologi (30%) 5.69

d. Kelengkapan unsur dan kualitas terbitan/jurnal (30%) 6.15

Total = (100%)

20.0

Nilai Pengusul = 40%/3 x 20 = 2,67

Semarang, Oktober 2022 Reviewer 1

Prof. Ir. M Agung Wibowo, M.M., M.Sc., Ph.D.

NIP. 196702081994031005

Unit Kerja : Departemen Teknik Sipil FT UNDIP

Reviewer 2

Prof. Dr. Ir. Sri Tudjono, M.S.

NIP. 195303091981031005

Unit Kerja : Departemen Teknik Sipil FT UNDIP Judul Karya Ilmiah : The Influence of Molarity Variations to The Mechanical Behavior of Geopolymer

Concrete

Jumlah Penulis : 4 Orang (Purwanto, Ay Lie Han, Nuroji, Januarti Jaya Ekaputri) Status Pengusul : Penulis ke-3

Identitas Prosiding : a. Judul Prosiding : MATEC Web of Conferences 195, 01010 (2018) The 4th International Conference on Rehabilitation and Maintenance in Civil Engineering (ICRMCE 2018)

b. ISBN/ISSN : e-ISSN: 2261-236X

c. Thn Terbit, Tempat Pelaks. : 2018, Sukoharjo, Indonesia, 11-12 Juli 2018 d. Penerbit/Organiser : EDP Sciences

e. Alamat Repository/Web : https://www.matec-

conferences.org/articles/matecconf/abs/2018/54/ma tecconf_icrmce2018_01010/matecconf_icrmce201 8_01010.html

Alamat Artikel : https://www.matec-

conferences.org/articles/matecconf/pdf/2018/54/ma tecconf_icrmce2018_01010.pdf

f. Terindeks di (jika ada) : Scopus (discontinued setelah paper terbit)

2.20 5.93 5.93 20.05.93 1.826.36

5.45 6.37 20.0

LEMBAR

HASIL PENILAIAN SEJAWAT SEBIDANG ATAU PEER REVIEW KARYA ILMIAH : PROSIDING

Kategori Publikasi Makalah : √ Prosiding Forum Ilmiah Internasional (beri pada kategori yang tepat) Prosiding Forum Ilmiah Nasional Hasil Penilaian Peer Review :

Komponen Yang Dinilai

Nilai Maksimal Prosiding Nilai Akhir Yang Diperoleh Internasional Nasional

a. Kelengkapan unsur isi prosiding (10%) 2.50 b. Ruang lingkup dan kedalaman pembahasan

(30%)

7.50 c. Kecukupan dan kemutahiran data/informasi dan

metodologi (30%)

7.50 d. Kelengkapan unsur dan kualitas terbitan

/prosiding (30%)

7.50

Total = (100%) 25.00

Nilai Pengusul = 40%/3 x 20 = 2.67 Catatan Penilaian Paper oleh Reviewer:

1. Kesesuaian dan kelengkapan unsur isi prosiding:

Paper terdiri dari abstract, introduction, literature review, research method, result and analysis, conclusion, and references => semua unsur sudah terpenuhi dengan lengkap.

2. Ruang lingkup dan kedalaman pembahasan:

Research on geopolymer => Based on the basic material behaviour. It consists of material proportions, mix design formulas and the development of a high performance geopolymer concrete. It looks on molar activator concentration.

3. Kecukupan dan kemutakhiran data/informasi dan metodologi:

Data diperoleh => 150 specimens by 300-milimeter cylinders tested.

The molarity variations were set at 6, 8, 10 molars.

4. Kelengkapan unsur dan kualitas terbitan:

Paper dipublikasikan pada Matec Web of Conference => penerbit = EDP Sciences. Terindex Scopus, discontinued sesudah paper terbit.

Semarang, Juni 2020 Reviewer 1

Prof. Ir. M Agung Wibowo, M.M., M.Sc., Ph.D.

NIP. 196702081994031005

Unit Kerja : Departemen Teknik Sipil FT UNDIP Judul Karya Ilmiah : The Influence of Molarity Variations to The Mechanical Behavior of Geopolymer

Concrete

Jumlah Penulis : 4 Orang (Purwanto, Ay Lie Han, Nuroji, Januarti Jaya Ekaputri) Status Pengusul : Penulis ke-3

Identitas Prosiding : a. Judul Prosiding : MATEC Web of Conferences 195, 01010 (2018) The 4th International Conference on Rehabilitation and Maintenance in Civil Engineering (ICRMCE 2018)

b. ISBN/ISSN : e-ISSN: 2261-236X

c. Thn Terbit, Tempat Pelaks. : 2018, Sukoharjo, Indonesia, 11-12 Juli 2018 d. Penerbit/Organiser : EDP Sciences

e. Alamat Repository/Web : https://www.matec-

conferences.org/articles/matecconf/abs/2018/54/ma tecconf_icrmce2018_01010/matecconf_icrmce201 8_01010.html

Alamat Artikel : https://www.matec-

conferences.org/articles/matecconf/pdf/2018/54/ma tecconf_icrmce2018_01010.pdf

f. Terindeks di (jika ada) : Scopus (discontinued setelah paper terbit)

25

1.82 6.36 5.45 6.37 20.0

LEMBAR

HASIL PENILAIAN SEJA WAT SEBIDANG ATAU PEER REVIEW KARYA ILMIAH : PROSIDING

Judul Karya Ilmiah Jumlah Penulis Status Pengusul Identitas Prosiding

The Influence of Molarity Variations to The Mechanical Behavior of Geopolymer Concrete

4 Orang (Purwanto, Ay Lie Han, Nuroji, Januarti Jaya Ekaputri) Penulis ke-3

a. Judul Prosiding

b. ISBN/ISSN

c. Thn Terbit, Tempat Pelaks.

d. Penerbit/Organiser e. Alamat Repository/Web

Alamat Artikel f. Terindeks di (jika ada)

MATEC Web of Conferences 195, 01010 (2018) The 4th International Conference on Rehabilitation and Maintenance in Civil Engineering (ICRMCE 2018)

e-ISSN: 2261-236X

2018, Sukoharjo, Indonesia, 11-12 Juli 2018 EDP Sciences

https :/ /www .matec-

conferences. org/articles/matecconf/ abs/2018/54/ma tecconf icrmce20 I 8 01010/matecconf icrmce20 l 8 01010.html

https:/ /www .matec­

conferences.org/articles/matecconf/pdf/2018/54/ma tecconf ic1mce2018 01010.pdf

Scopus (discontinued setelah paper terbit) Kategori Publikasi Makalah

(beri ./ pada kategori yang tepat) : [TI Prosiding Forum Ilmiah Internasional

D

^Prosiding Forum Ilmiah Nasional Basil Penilaian Peer Review

Nilai Maksimal Prosiding Nilai Akhir

Komponen Yang

Yang Dinilai lnternasional Nasional Diperoleh

a. Kelengkapan unsur isi prosiding (10%) 2.50

D

b. Ruang lingkup dan kedalaman pembahasan 7.50 (30%)

C. Kecukupan dan kemutahiran data/informasi dan 7.50 metodologi (30%)

d. Kelengkapan unsur dan kualitas terbitan 7.50 /prosiding (30%)

Total = (100%) 25.00

Nilai Pen2usul = 40%/3 X 20 = 2.67 Catatan Penilaian Paper oleh Reviewer:

1. Kesesuaian dan kelengkapan unsur isi prosiding:

Unsur isi prosiding sesuai dan lengkap

2. Ruang lingkup dan kedalaman pembahasan:

1 pustaka disitasi dalam pembahasan sebagai acuan.

3. Kecukupan dan kemutakhiran data/informasi dan metodologi:

8 dari 12 pustaka terbitan lebih daii 10 tahun, 4 pustaka terbitan 5 tahun terakhir. 1 pustaka merupakan tugas akhir Sl.

4. Kelengkapan unsur dan kualitas terbitan:

Terindex Scopus, 2019 SJR = 0.166 Cite Score 0.80. Similarity index Turnitin 10 %.

Semarang, Juni 2020 Revi,d;f

Prof. Dr. Ir. Sri Tudjono, M.S.

NIP. 195303091981031005

Unit Kerja : Departemen Teknik Sipil FT UNDIP 25

2.20 5.93 5.93 5.93 20.0

UNS

UNIVERSITAS SEBELAS MARET

HAKI

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is hereby awarded to :

Purwanto

in recogr;_;tion of valuable contribution as

Author an·d Presenter

entitled

The Influence of Molarity Variations to the Mechanical Behaviour of

Geopotymct c'o .. crc�C: ..

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Ph.D.

� Department of Civil Engineering, Faculty of Engineering, Sebelas Maret University �

� Department of Civil Engineering, Faculty of Engineering, Sebelas Maret University �

Nuroji

Ph.D.

UNS

UNIVERSITAS SEBELAS MARET

HAKI

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July, 11-12 2018 Solo, Indonesia

in recognition of valuable contribution as

Author

entitled

The Influence of molarity variations to the mechanical behavior of geopolymer concrete

is hereby awarded to

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MATEC Web of Conferences • Open Access • Volume • August • Article number • th International Conference on Rehabilitation and Maintenance in Civil Engineering, ICRMCE , July - July

The influence of molarity variations to the mechanical behavior of geopolymer concrete

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Purwanto^a Han A.L.^{a, b} Nuroji^c Jaya Ekaputri J.^d

Structural and Material Laboratory, Diponegoro University, Tembalang, Semarang, Indonesia Fib-Indonesia, Prof. Soedarto SH, Tembalang, Semarang, Indonesia

Civil Engineering Departement, Diponegoro University, Tembalang, Semarang, Indonesia Civil Engineering Departement, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia

a b c d

Abstract

Research on geopolymer concrete has seen a new light in the analyses and experiments for special topics in the field of their mechanical properties. Among the most important are studies of geopolymer concrete subjected to confinement and bond. Regarding the basic material behavior, research of material proportions formulations, mix design formulas and inventions towards the development of a high-performance geopolymer concrete, were conducted. The latest looked into the effects of molar activator concentrations to the 28 days compression strength, and the strength development as a function of concrete age for geopolymer concretes. The specimens were 150 by 300-millimeter cylinders tested in uniaxial compression. The molarity variations were set at 6, 8, and 10 molars. The geopolymer concrete samples were compared to conventional concrete specimens, having the exact same volumetric material proportions. The cement was replaced with fly ash, and the activator with water. The aggregate content was taken as a constant. The concrete strength as a function of molar increase followed a parabolic, convex pattern, suggesting that a maximum value exists. The strength development of all geopolymer concretes had a slower rate when compared to conventional concrete.

© The Authors, published by EDP Sciences, 2018.

Author keywords

Age; Compression strength; Geopolymer concrete; Molarity

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Rice Husk Ash and Basalt Fibre- Based Sustainable Geopolymer Concrete in Rigid Pavements. A Review

Abbass, M. Singh, G.

The Effect of Dry Mix Sodium Hydroxide onto Workability and Compressive Strength of Geopolymer Paste Ali, A.Z.M. Jalaluddin, N.A.

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6/16/2021 International Conference in Rehabilitation and Maintenance in Civil Engineeering [4th]

https://sipil.ft.uns.ac.id/icrmce04/index.php/keynote/view 1/3

Keynote Speakers

Kennichiro Nakarai

Graduate School of Engineering, Hiroshima University, Japan

 more ... (http://seeds.office.hiroshima-u.ac.jp/profile/en.82b745276185148e520e17560c007669.html)

Masyhur Irsyam Bandung Institute of Technology (ITB), Ind

more... (http://www.pri.itb.ac.id/web/geotechnics/

Hung Jiun Liao

National Taiwan University of Science and Technology, Taiwan

 more... (http://www.ct.ntust.edu.tw/ct_eng/users/view/13?itemid=23)

Apiniti Jotisankasa Kasetsart University, Thailand

 more... (http://www.ce.eng.ku.ac.th/people/faculty/geotechn

Sri Ravindrarajah Rasiah University Technology of Sidney, Australia

 more... (http://newsroom.uts.edu.au/content/dr-sri-ravindrarajah-rasiah)

Mohammad Bin Ismail Department of Structures and Materials UTM

more... (http://civil.utm.my/mohamm

Chan Weng Tat

National University of Singapore, Singapore  more... (http://cee.nus.edu.sg/people/ceecwt/)

Petr Hajek

Czech Technical University, Czech

 more... (http://www.uceeb.cz/en/people/prof-ing

Yusep Muslih Purwana

Sebelas Maret University, Indonesia  more... (https://www.researchgate.net/profile/Yusep_Purwana)

Important Dates

Deadline of abstract submission Nov 30, 2017

Jan 20, 2018

Notification of abstract acceptance Dec 31, 2017

Jan 31, 2018

6/16/2021 International Conference in Rehabilitation and Maintenance in Civil Engineeering [4th]

https://sipil.ft.uns.ac.id/icrmce04/index.php/scomm/view 1/6

Scientific Comittee

 Name 

Affiliation 

Country  Profile

Kennichiro Nakarai

Hiroshima University

Japan  (http://seeds.office.hiroshima-u.ac.jp/profile/en.82b745276185148e520e17560c007669

Shunji Kanie Hokkaido University

Japan  (http://www.eng.hokudai.ac.jp/labo/ssystem/kanie/index.htm)

A.A.A. Molenaar TU Delft The

Netherlands  (http://aaa-molenaar.jouwweb.nl/)

Henk Jonkers TU Delft The

Netherlands  (https://www.tudelft.nl/en/staff/h.m.jonkers/?no_cache=1&cHash=) Kenji KAWAI Hiroshima

University

Japan  (http://seeds.office.hiroshima-u.ac.jp/profile/en.7a727a8accb846a8520e17560c007669

Masyhur Irsyam Bandung Institute of Technology (ITB)

Indonesia  (http://www.pri.itb.ac.id/web/geotechnics/masyhur-irsyam/)

Hung Jiun Liao National Taiwan University of Science and Technology

Taiwan  (http://www.ct.ntust.edu.tw/ct_eng/users/view/13?itemid=23)

Oleg Kaplinski Instytut Architektury Planowania Przestrzennego

Poland

Ichiro ARIO Hiroshima University

Japan  (http://seeds.office.hiroshima-u.ac.jp/profile/en.4905aeee8dac8140520e17560c007669

M.F.C Martin Van de Ven

TU Delft The

Netherlands  (https://www.tudelft.nl/en/staff/m.f.c.vandeven/?no_cache=1)

Meor Othman Hamzah

Universiti Sains Malaysia

Malaysia  (http://civil.eng.usm.my/index.php/en/about-us/academic-staff/166-professor-dr-meor-othma

Chan Weng Tat National University of Singapore

Singapore  (http://cee.nus.edu.sg/people/ceecwt/)

Petr Hajek Czech Technical University

Czech  (http://www.uceeb.cz/en/people/prof-ing-petr-hajek-csc)

Phuong Trinh BUI

Hiroshima University

Japan  (http://seeds.office.hiroshima-u.ac.jp/profile/en.78fd167244fa14e7520e17560c007669

Apiniti Jotisankasa

Kasetsart University

Thailand  (http://www.ce.eng.ku.ac.th/people/faculty/geotechnicial-eng/apiniti-jotisankasa/)

Nurly Gofar Nanyang Technological University (NTU)

Singapore  (https://nanyang.academia.edu/NurlyGofar)

Sivakumar Naganathan

University Tenaga Nasional

Malaysia

Izni Syahrizal bin Ibrahim

University Technology

Malaysia  (http://civil.utm.my/iznisyahrizal/)

Miliyon Woldekidan

BAM Infra Nederland

Netherlands

6/16/2021 MATEC Web of Conferences

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MATEC Web of Conferences

Volume 195 (2018)

The 4 ^th International Conference on Rehabilitation and Maintenance in Civil Engineering (ICRMCE 2018)

Solo Baru, Indonesia, July 11-12, 2018

P. Hajek, A.L. Han, S. Kristiawan, W.T. Chan, M.b. Ismail, B.S. Gan, R. Sriravindrarajah and B.A. Hidayat (Eds.)

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Open Access

Statement of Peer review

Published online: 22 August 2018 PDF (40.8 KB)

Open Access

About the conference

Published online: 22 August 2018 PDF (3.64 MB)

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Open Access

Preface

⁰⁰⁰⁰¹

Published online: 22 August 2018

DOI: https://doi.org/10.1051/matecconf/201819500001 PDF (83.21 KB)

- Construction Materials

Open Access

Advanced high-performance concrete structures - challenge for sustainable and resilient future

⁰¹⁰⁰¹

Petr Hajek

Published online: 22 August 2018

DOI: https://doi.org/10.1051/matecconf/201819501001 PDF (612.5 KB) References

Open Access

Waterproo ng practices in Australia for building construction

01002

Rasiah Sriravindrarajah and Elizebeth Tran

Published online: 22 August 2018

DOI: https://doi.org/10.1051/matecconf/201819501002 PDF (738.9 KB) References

Open Access

Proposed concrete compaction method using an electrical internal vibrator: a review of compaction standard for concrete in laboratory according to SNI 2493:2011

⁰¹⁰⁰³

Agus Maryoto

Published online: 22 August 2018

DOI: https://doi.org/10.1051/matecconf/201819501003 PDF (828.7 KB) References

Open Access

Microscopic investigation on concrete cured internally by using porous ceramic roof- tile waste aggregate

⁰¹⁰⁰⁴

Azusa Shigeta, Yuko Ogawa and Kenji Kawai

 Construction Materials

 Structural Engineering

 Geotechnical Engineering

 Transportation Engineering

 Hydrologic Engineering

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6/16/2021 MATEC Web of Conferences

https://www.matec-conferences.org/articles/matecconf/abs/2018/54/contents/contents.html 4/29

Agus Maryoto and Gathot Heri Sudibyo Published online: 22 August 2018

DOI: https://doi.org/10.1051/matecconf/201819501009 PDF (405.6 KB) References

Open Access

The in uence of molarity variations to the mechanical behavior of geopolymer concrete

⁰¹⁰¹⁰

Purwanto, Ay Lie Han, Nuroji and Januarti Jaya Ekaputri Published online: 22 August 2018

DOI: https://doi.org/10.1051/matecconf/201819501010 PDF (566.6 KB) References

Open Access

The e ect of additional aluminium to the strength of geopolymer paste

⁰¹⁰¹¹

Aulia Rahman and Januarti Jaya Ekaputri Published online: 22 August 2018

DOI: https://doi.org/10.1051/matecconf/201819501011 PDF (415.2 KB) References

Open Access

E ects of microbial agents to the properties of y ash-based paste

⁰¹⁰¹²

Kiki Dwi Wulandari, Januarti Jaya Ekaputri, Triwulan, Chikako Fujiyama and Davin H. E. Setiamarga Published online: 22 August 2018

DOI: https://doi.org/10.1051/matecconf/201819501012 PDF (944.4 KB) References

Open Access

Microstructure and mechanical properties of FA/GGBS-based geopolymer

⁰¹⁰¹³

Apriany Saludung, Yuko Ogawa and Kenji Kawai Published online: 22 August 2018

DOI: https://doi.org/10.1051/matecconf/201819501013 PDF (2.117 MB) References

Open Access

Repair of rigid pavement using micro concrete material

⁰¹⁰¹⁴

Jonbi Jonbi, A. R. Indra Tjahjani, Nuryani Tinumbia, A. M. Pattinaja and Bambang S. Haryono Published online: 22 August 2018

DOI: https://doi.org/10.1051/matecconf/201819501014

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© The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).

MATEC Web of Conferences 195, 01002 (2018) https://doi.org/10.1051/matecconf/201819501002 ICRMCE 2018

Waterproofing practices in Australia for building construction

Rasiah Sriravindrarajah^1,*

and Elizebeth Tran

¹

1CBIR, School of Civil and Environmental Engineering, University of Technology Sydney, Australia

Abstract. Waterproofing is an essential component in building construction to maintain the integrity of buildings with reduced maintenance cost. A comprehensive waterproofing system is an integrated combination of factors, and includes product selection, membrane detail, substrate preparation, design, installation and maintenance. It is designed to work under different environmental conditions, substrates and applications. Proper understanding of the issues related to waterproofing membrane systems is important to minimise the waterproofing failures in both commercial and residential buildings. This paper aims to discuss Standards and Codes; membrane systems and performance, waterproofing practices, design and installation techniques, inspection and testing and quality assurance adopted by the waterproofing industry in Australia.

1 Introduction

Waterproofing is a fundamental and vital construction activity to maintain the integrity of both commercial and residential buildings over its service life. It minimises the post- completion problems mainly caused by water damages such as mould growth and rusting.

A comprehensive waterproofing system is an integrated combination of factors, includes product selection, membrane detail, drainage design, substrate preparation, design, installation, quality assurance and maintenance. The advancements in technology have led to the development of various waterproofing membrane systems, namely liquid, sheet and spray-applied membranes. Each of these systems has its advantages and disadvantages.

This paper aims to discuss Standards and Codes; membrane systems and performance, waterproofing practices, design and installation techniques, inspection and testing and quality assurance adopted by the waterproofing industry in Australia.

2 Standards and building codes in Australia

AS3740 [1] (Waterproofing of domestic wet areas) and AS4654.1/2 [2, 3] (Waterproofing membrane systems for exterior use) are current Australian standards used by the building and construction industry in Australia. AS4654.1 [2] lists the conditions and requirements that membranes will be subjected to test its durability. This includes time, humidity, water

*Corresponding author: Sri.Ravindrarajah@uts.edu.au

© The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).

MATEC Web of Conferences 195, 01001 (2018) https://doi.org/10.1051/matecconf/201819501001 ICRMCE 2018

Advanced high-performance concrete structures – challenge for sustainable and resilient future

Petr Hajek^1,*

1Czech Technical University in Prague, Faculty of Civil Engineering, 166 29 Prague 6, Thakurova 7, Czech Republic

Abstract. Development and recent changes in natural and socio-economic environment requires new technical solutions for construction of new and reconstruction and modernization of existing structures. Structures and all built environment should be better prepared for new conditions – they should be sustainable and resilient. Concrete is building material with high potential for new technical solutions resulting in needed environmental impact reduction and consequent social and economic improvements. The paper presents potential contribution of concrete industry, advanced high- performance concrete and concrete structures to Sustainability Development Goals specified in UN 2030 Agenda for Sustainable Development and presents basic principles of implementation of sustainability approach into design of concrete structures and particularly to fib Model Code 2020.

1 Introduction

1.1 World is changing

Considering scale line - one year for entire life of the Earth - the human civilization exists only last 90 seconds and RC structures are used in last one second. Earth existed long before humans developed on the Earth and will exist long after the conditions on the Earth will not be suitable for human life. Sustainability is about preservation of environmental, social and economic conditions on our planet in the form which will enable survival of humans on the Earth as long as possible [1]. The question raised in this paper is how concrete, as the second most used material after water and the most used construction material, can help in this process.

Changing of the climate on the Earth is innate and everlasting process; environmental conditions are continuously changing due to continental drift followed by volcanic, seismic effects and due to man-made impacts. Human life conditions for life are modified – and as a consequence biodiversity is irrecoverably changed. This process was in previous periods very slow, enabling consecutive adaptation of life forms (incl. humans) to changing

*Corresponding author: petr.hajek@fsv.cvut.cz

© The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).

MATEC Web of Conferences 195, 01004 (2018) https://doi.org/10.1051/matecconf/201819501004 ICRMCE 2018

Microscopic investigation on concrete cured internally by using porous ceramic roof-tile waste aggregate

Azusa Shigeta¹

, Yuko Ogawa

¹

, and Kenji Kawai

^1*

1Department of Civil and Environmental Engineering Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, Japan

Abstract. Porous ceramic roof-tile waste aggregate (PCA), which is a recycled material, is an effective internal curing material for concrete. Part of the aggregate is replaced with saturated internal curing material to supply internal water into the cement paste continuously. Internal water is effective to promote the hydration of cement paste, especially in concrete with a low water-to-cement ratio because external curing water cannot easily reach inside the concrete. It has been reported that PCA leads to an increase in compressive strength and the reduction of autogenous shrinkage of concrete. However, the effects of PCA in previous researches are different with regards to the experimental conditions and have not been evaluated sufficiently. Therefore, the present study aims to investigate the effect of internal water supplied from PCA microscopically. In the experimental program, a compressive strength test was conducted for 6 types of concrete with a W/C of 0.35. The microhardness around the aggregate in the concrete was also measured to investigate the extent of the influence of the internal water supply. The results showed the possibility that microhardness of ITZ around PCA is improved by internal curing water supply and the compressive strength of concrete is also improved by using PCA.

1 Introduction

Generally, curing is conducted for concrete immediately after casting in a humid environment in order to promote the hydration of cement paste. However, external curing water cannot reach the inside of concrete sufficiently, especially in concrete with a low water to cement ratio (W/C) because the surface part of such a type of concrete is dense. To compensate for such a problem, internal water curing is effective to promote hydration. Internal curing is a curing method in which part of the aggregate is replaced with saturated internal curing material to supply internal water into the cement paste continuously. In concrete, capillary water is consumed for hydration of

*Corresponding author : kkawai@hiroshima-u.ac.jp

© The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0/).

MATEC Web of Conferences 195, 01005 (2018) https://doi.org/10.1051/matecconf/201819501005 ICRMCE 2018

Modulus elasticity of the graded concrete, a preliminary research

M. Mirza Abdillah Pratama^1,*

, B. Sri Umniati

¹, Bunga Arumsari Mutiara Wulandari¹

,

Ay Lie Han²

, Buntara Sthenly Gan

³, and Zhabrinna Zhabrinna⁴

1Department of Civil Engineering, Faculty of Engineering, Universitas Negeri Malang, Indonesia

2Department of Civil Engineering, Faculty of Engineering, Diponegoro University, Indonesia

3Department of Architecture, College of Engineering, Nihon University, Koriyama, Japan

4School of Engineering and Physical Science, University of Birmingham, The United Kingdom

Abstract. The elastic modulus of materials plays a role in determining the stiffness of a structural element and its level of serviceability. Previous research indicates that the concrete modulus of elasticity could be improved by combining 2 (two) concrete mixes using a gradual compacting method.

In this study, the effect of different concrete strength combinations to the resulting modulus of elasticity is examined. Three types of concrete mixes with a strength of 30 MPa, 40 MPa and 50 MPa are prepared. The graded concrete is moulded in cylindrical concrete casts (150 mm x 300 mm) with the following casting configurations: 30-40 MPa, 30-50 MPa, and 40-50 MPa. The static modulus of elasticity test is performed at an age of 28 days using compressometers in accordance with ASTM C469. The test results show that the modulus of elasticity of the graded concrete is proportionally influenced by the stiffness of the higher and the lower concrete material.

Additionally, the resulting compressive strength of the graded concrete is determined by the lower concrete strength.

1 Introduction

Graded concrete is a unique construction material combining multiple concrete mixes to optimise the use of cement as a binding agent to achieve more sustainable construction development [1-7]. By composing distinguished concrete mixes in an element, the graded concrete members possess mechanical characteristics that vary in their elements’ depth.

Preliminary researches focusing on the investigation of the compressive strength of graded concrete have been conducted recently, but information about the modulus of elasticity of graded concrete is not yet widely available. As a fundamental mechanical property of the material, the modulus of elasticity of concrete should be predicted and be defined correctly provided that it affects the material stiffness and structural rigidity of an element [8-9].

Therefore, this research aims to experimentally investigate the modulus of elasticity of graded concrete at a preliminary level.

*Corresponding author: mirza.abdillah.ft@um.ac.id