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BIOMASS AGGREGATE CONCRETE FOR SOFT SOIL SUBBASE (S3) SYSTEM
YL Lee, PhD, MCSM
Faculty of Civil and Environmental Engineering, UTHM, 86400 Parit Raja, Batu Pahat, Johor Darul Takzim, Malaysia.
30 January 2013
Objectives:
• To inspire innovation• To explore opportunities in research & postgraduate studies
Outline
• Biomass aggregate concrete• Foundation on soft soil• Opportunities• Challenges
Rice husk ash (biomass aggregate)
Milestone achievement for the exploitation of solid wastes in construction
• Fact Sheet
• Name of Rice Miller - Lok Eak Khim Rice Mill, Skun, Kampong Cham, Kingdom of Cambodia
• Date of Installation – November 2007
• Capacity of Gasifier – 250kW
• Type of Gasifier – Downdraft type
• Saving of Diesel to existing Diesel Engine – 85%
• Carbon credit – not pursued
• Addition of Gas Engine 250kW, installed in May 2008.
Biomass Silica Project in Cambodia
Bulk handling of biomass silica
Bulk handling of biomass silica
Prepacked biomass silica
Emerging Technology
A method of using air bubbles and catalyst in cement mortar
Reduce density Enhance durability performance
On-site production of KUIKcrete
KUIK Block for soft soil subbase (S3) system
Research opportunities
Test site at RECESS, UTHM
Soft soil subbase (S3) system
Soft soil subbase (S3) system
Novel combination of foamed aggregate and scrap tyres
S3 experimentation
S3 subgrade ready for pervious concrete pavement
KUiK block for pervious pavement
Biomass aggregate for plantation road
Within 3 days, 1800m3 of foamed concrete (6m high) was cast. The total volume was about 180 units of low cost houses.
Technology Showcase
Density monitoring of foamed concrete
Stress Distribution due to Lifting
KUiK wall at UTHM
KUiK Cabin for construction research
KUiK Drain experimentation
The soft soil sample
PROPERTIES OF ORIGINAL SOILProperties Values
Liquid limit, LL (%) 67.47
Plastic limit, PL (%) 30.16
Plasticity index, PI (%) 37.31
Moisture Content (%) 84.19
pH Soil 3.32
pH Water 3.82
Color Light gray
Specific gravity, Gs 2.62
Grain size distribution
Silt (%) 79.5
Clay (%) 10.7
Fines (%) 10.8
Soil Type MH (organic silty clay with high plasticity)
STRENGTH DEVELOPMENT OF SOILCRETE
Unconfined compressive strength of TIA treated soil under humid curing
CuringPeriodAdditiveContent
7 Days 14 Days 28 Days
0% TIA + 100% cement(Specimen Cement)
85.010 kPa 205.621 kPa 304.202 kPa
8% TIA + 92% cement(Specimen A)
53.066 kPa 97.046 kPa 98.988 kPa
10% TIA + 90% cement(Specimen B)
79.787 kPa 154.178kPa 158.562kPa
13% TIA + 87% cement(Specimen C)
121.309 kPa 134.611 kPa 160.264kPa
Unconfined compressive strength of TIA treated soil under wet curing
CuringPeriodAdditiveContent
7 Days 14 Days 28 Days
0% TIA + 100% cement(Specimen Cement)
79.507 kPa 72.441 kPa 78.733 kPa
8% TIA + 92% cement(Specimen A)
41.156 kPa 123.303 kPa 41.686 kPa
10% TIA + 90% cement(Specimen B)
63.850 kPa 109.568 kPa 155.823 kPa
13% TIA + 87% cement(Specimen C)
49.233 kPa 83.381 kPa 93.951 kPa
Compressive strength development of TIA soilcrete (Humid Condition)
0
100
200
300
400
0 2 4 6 8 10 12 14
TIA % CONTENT IN 10% CEMENT (%)
Str
en
gth
, q
u (
kPa
)
7 Days Curing
14 Days Curing
28 Days Curing
Compressive strength development of TIA soilcrete (Wet Condition)
0
100
200
0 2 4 6 8 10 12 14
TIA % CONTENT IN 10% CEMENT (%)
Str
en
gth
, q
u (
kPa
)
7 Days Curing
14 Days Curing
28 Days Curing
Tan Sri Soon Siew Hoong and Azra’i Shu’ib @ SMIDEX2008 KLCC
Challenges
Discussion with Sheikh Farhad Nur of the ILA Group
Opposed Jet Mill micronising chamber
Water treatment for industrial applications
Industrial RO water
ACKOWLEDGEMENT
We wish to acknowledge Cradle Fund for supporting (www.1.com.my) and www.1.net.my leading to the Kumomo Tree Charity Project for humanity.
Referenceswww.1.net.my
www.ashmann.com
www.biomass.org.my
