scholarly journals Geopolymers as Alternative Sustainable Binders for Stabilisation of Clays—A Review

Geotechnics ◽  
2021 ◽  
Vol 1 (2) ◽  
pp. 439-459
Author(s):  
Jeremiah J. Jeremiah ◽  
Samuel J. Abbey ◽  
Colin A. Booth ◽  
Anil Kashyap

The need to transit to greener options in soil stabilisation has revamped research on the use of industrial and agricultural by-products in order to cut down on the current carbon footprint from the use of ordinary Portland cement (OPC) and lime related binders for the treatment of problematic soils. This study is a review on the use of geopolymers constituted by alkali activation of several industrial wastes such as pulverised fuel ash (PFA), ground granulated blast furnace slag (GGBS), metakaolin (MK), glass powder (GP), palm oil fuel ash (POFA), silica fume (SF), rice husk ash (RHA), volcanic ash (VA), and marble powder (MP) for the stabilisation of weak clays. The performance of stabilised clays as subgrade and subbase materials for road pavement construction was evaluated by comparing the 7 day UCS of the treated clays with the strength requirement for stabilised materials as outlined in BS EN 16907-4. The result of the study shows that geopolymers can be employed in improving the engineering properties of problematic clays to meet practical applications. Strength improvement was observed in the stabilised clays with increased precursor content, molarity of alkaline activator, and curing period.

2016 ◽  
Vol 111 ◽  
pp. 286-297 ◽  
Author(s):  
Iftekhair Ibnul Bashar ◽  
U. Johnson Alengaram ◽  
Mohd Zamin Jumaat ◽  
Azizul Islam ◽  
Helen Santhi ◽  
...  

Depletion of natural aggregate has created more research to explore the utilization of industrial waste as alternative aggregate in concrete construction. The use of industrial wastes in making of artificial aggregate will lead to greener environment. In this study an attempt has been made to find the suitability of waste materials of palm oil fuel ash (POFA) and water treatment sludge as possible substitute for natural coarse aggregate. Specific gravity, water absorption, crushing strength and impact value have been tested for this mixture. Both raw materials were mixed with lime and alkaline activator. The artificial aggregate was air-cured at non-sintered temperature. Results show that the different mix proportions of the POFA to silt affected the performance of the artificial aggregate. Specific gravity and water absorption increased with the proportion of silt. Lightweight aggregate comprising silt combined with POFA and alkaline activator has the potential to produce a good performance of concrete. These benefits contribute to the production of energy-efficient building materials.


2018 ◽  
Vol 7 (3.9) ◽  
pp. 89 ◽  
Author(s):  
Faisal Sheikh Khalid ◽  
Puteri Natasya Mazenan ◽  
Abdul Halim Abdul Ghani ◽  
Nurul Bazilah Azmi ◽  
Mohd Irwan Juki ◽  
...  

The consumption of agricultural and industrial wastes has grown rapidly across the world which leads to create large quantities of wastes. It reflects the problem of having a limited number of landfills due to a huge amount of waste produced. Therefore, the solution is recycle the agricultural and industrial wastes as one of the materials use in concrete. Agricultural and industrial wastes were selected as cement replacement in a concrete production. This study aims to investigate the concrete properties containing palm oil fuel ash (POFA) and ceramic tile wastes, such as workability, compressive and splitting tensile strength. The concrete mix design ratio was designed for concrete grade strength 30 and water cement ratio of 0.55. Testing for compressive strength was measured at 7 and 28 days and for tensile strength only at 28 days. This research finds that with combination of 5% POFA and 10% ceramic with 27.1 MPa for compressive strength and 2.5 MPa for tensile strength will be the optimum mix design to replace cement in concrete. This research helps to improve the knowledge, increase the level of environmental awareness and understanding the importance and recycling the construction waste generated.  


2014 ◽  
Vol 1043 ◽  
pp. 273-277 ◽  
Author(s):  
Brabha H. Nagaratnam ◽  
M.E. Rahman ◽  
A.K. Mirasa ◽  
M.A. Mannan

This paper presents the workability properties of Self-Compacting Concrete (SCC) containing a ternary mix binder using Ordinary Portland Cement and agro-industrial wastes i.e; palm oil fuel ash (POFA) and low calcium based fly ash (FA). The mixtures were prepared with 0 to 40% cement replacement using agro-industrial wastes at 10% intervals. Water to binder ratio and cement content is kept constant at 0.38 and 540 kg/m3 respectively. Self-compact-ability parameters investigated were Slump flow, J-Ring, V-Funnel, Sieve Stability and Visual Stability Index Tests. It is found that agro-industrial wastes provide a positive effect on the workability properties of self-compacting concrete.


2016 ◽  
Vol 9 (2) ◽  
pp. 120-128
Author(s):  
Haspiadi Haspiadi ◽  
Kurniawaty Kurniawaty

Research of  the utilization solid waste of palm oil fuel ash from boiler as row materials  for manufacturing light concrete brick has been conducted. The main objective of this study is to investigate the potential use solid waste of palm oil fuel ash from palm oil mill boilers as row materials for manufacturing light concrete brick has recently attracted for an alternative environmentally sustainable application. In this study, light concrete brick made with various proportions of palm oil fuel ash from palm oil mill boilers and sand were fabricated and studied under laboratory scales. Percentage of palm oil fuel ash of 0% as a control,  10%, 20%, 30%, 40%, 50%, 60%, replacement  sand, wheras others materials such as Portland cement, lime, gypsum, foaming agent and aluminium with the numbers constant. The quality of light concreate brick   were applied followed by the compressive strength test, density and water absorption capacity. The study discovered that the compressive strength for all composition meet the recommended value to light structural of 6.89 MPa as prescribed in SNI 03-3449-2002. In the same manner density of light concrete brick for all proportion under the maximum density recommended value of 1400 Kg/m3 according to SNI 03-3449-2002. While water absorption capacity of increased by the increasing use of ashes. Therefore, palm oil fuel ash from boiler can be used as raw material for the light concrete brick which is  environmental friendly because using solid waste and also an alternative handling solid waste.ABSTRAKPenelitian pemanfaatan limbah padat abu cangkang dan serat kelapa sawit dari boiler sebagai bahan baku pembuatan bata beton ringan telah dilakukan. Tujuan dari penelitian ini adalah pemanfaatan limbah padat abu boiler berbahan bakar cangkang dan serat sebagai bahan pembuatan bata beton ringan sebagai salah satu alternatif pengelolaan lingkungan yang bekelanjutan. Dalam penelitian ini, bata beton ringan dibuat dengan berbagai komposisi abu boiler dan pasir yang diproduksi dalam  skala laboratorium. Persentase dari abu berturut-turut 0% sebagai kontrol, 10%, 20%, 30%, 40%, 50% dan 60% mensubtitusi pasir, sedangkan bahan lain yaitu semen, kapur, gypsum,  foaming  agent serta aluminium pasta dengan jumlah tetap. Mutu bata beton ringan yang diujikan adalah kuat tekan, bobot jenis dan daya serap air. Hasil penelitian menunjukkan bahwa kuat tekan untuk semua komposisi memenuhi batas minimum yang dipersyaratkan untuk stuktural ringan yaitu 6,89 MPa sesuai SNI 03-3449-2002. Demikian pula bobot jenis dari bata ringan yang dihasilkan masih dibawah dari batas maksimum yang direkomendasikan SNI 03-3449-2002 yaitu maksimal 1400 Kg/m3. Sedangkan daya serap air mengalami kenaikan dengan naiknya jumlah abu yang digunakan . Limbah padat abu boiler berbahan bakar cangkang dan serat sawit dapat dimanfaatkan sebagai bahan baku pembuatan bata beton ringan yang ramah lingkungan dengan memanfaatkan limbah dan menjadi salah satu alternatif pengelolaan limbah. Kata kunci :  Abu cangkang kelapa sawit,  bata beton ringan, bobot jenis,  daya serap air,  limbah,  kuat tekan


2021 ◽  
Vol 1136 (1) ◽  
pp. 012046
Author(s):  
Bala Gopal Adapala ◽  
Durga Chaitanya Kumar Jagarapu ◽  
Syed Hamim Jeelani ◽  
B. Sarath Chandra Kumar ◽  
Arunakanthi Eluru

2019 ◽  
Author(s):  
Salahaldin M. A. Abuabdou ◽  
Ong Wei Teng ◽  
Mohammed J. K. Bashir ◽  
Ng Choon Aun ◽  
Sumathi Sethupathi

Sign in / Sign up

Export Citation Format

Share Document