CONTENT
Introduction
What is Soil Cement?
Why Use Soil-Cement?
How is Soil-Cement Built?
Objective of the Work
Soil Cement Road
Performance of Soil Cement
Types
Advantages
Disadvantages
References
INTRODUCTION
Soil cement is frequently used as a construction
material for pipe bedding, slope protection, and road
construction as a sub base layer reinforcing and
protecting the sub grade.
It has good compressive and shear strength, but is
brittle and has low tensile strength, so it is prone to
forming cracks.
WHAT IS SOIL CEMENT?
Soil cementis a construction material, a mix of
pulverized natural soilwith small amount of portland
cementand water, usually processed in a tumble,
compacted to high density.
Hard, semi-rigid durable material is formed by
hydration of the cementparticles.
RAW MATERIALS
Soil aggregate
Portland cement
water
Soil Cement Construction
Process steps
1. Soil preparation: Remove vegetation and debris, and grade the
soil to the desired elevation and compaction level
2. Cement application: Apply cement to the soil as a dry powder
or slurry
3. Mixing: Mix the soil and cement using a rotary mixer, pug mill, or
traveling mixing plant
4.Compaction: Compact the mixture using a roller, plate
compactor, or vibrating compactor
5.Curing: Allow the mixture to cure to achieve maximum strength
Why Use Soil-cement In
Construction
Durability
Cost-effectiveness
Strengthnesssoil
Fire resistance
Thermal performance
Stiffness
Strength over time
Objective of the Work
To study about soil cement roads.
To study about construction methods.
Discuss about various properties of soil cement roads.
Discuss about advantages and disadvantages of soil
cement roads.
Soil Cement Road
Soil-cement is a highly
compacted mixture of
soil/aggregate, Portland
cement, and water.
Soil-cement differs from
Portland cement concrete
pavements in several
respects.
Performance of Soil Cement
Significantly reduced thickness
soil-cement is a cemented, rigid material
Facilitates the distribution of loads over a larger area
Hard
rigid soil-cement resists cyclic cold, rain, and spring-
thaw damage.
Types of soil cement
1.Cement-modified soils (CMS)
2.Soil-cement base (SCB)
3.Cement-treated base (CTB)
4.Acrylic copolymer (Rhino Snot)
1.Cement-modified soils (CMS):
A cement-modified soil contains relatively small proportion of
Portland cement.
result :
caked or slightly hardened material
similar to a soil
but with improved mechanical properties -lower plasticity
increased bearing ratio and shearing strength
and decreased volume change
2.Soil-cement base (SCB)
A soil-cement base contains higher proportion of cement than
cement-modified soil.
It is commonly used:
as a cheap pavement base for roads
streets
parking lots
airports
material handling areas.
3.Cement-treated base (CTB)
A cement-treated base is a mix of granular soil
aggregates or aggregate material with
Portland cement and water.
4.Acrylic copolymer (Rhino Snot)
is a water soluble acrylic copolymer applied to
soil or sand which penetrates and coats the
surface.
Advantages
Environmental friendly
Low First Cost
Fast Construction
Recycling of Existing Materials
High strength and durability
Resistance to weathering and erosion
Can be used in various soil types
Low maintenance
Disadvantages
1.High initial cost
2.Requires specialized equipment and labour
3.Limited flexibility
4.Limited ductility
5.Can be prone to cracking and shrinkage
Benefits
Improved soil strength and stability
Increased load-bearing capacity
Enhanced erosion resistance
Reduced soil settlement and deformation
Cost-effective and sustainable
Great Strength
Cores taken from soil-cement
pavements furnish proof of its
strength. Samples taken after
15 to 20 years show
considerably greater strength
than sample taken when the
pavement was initially built.
Superior Performance
More than 70 years of collective experience have
demonstrated that different kinds of soil-cement mixtures
can be tailored to specific pavement applications,all
achieving superior performance as a result of soil-
cement’s strength.
low maintenance costs.
References
1.BikashChandra Chattopadhyay, JoyantaMaity, "Foundation
Engineering" (Text Book), PHI, New Delhi
2.Dastidar, A.G. (1985). "Treatment of weak soil-An Indian
perspective"-Geotechnical Engineering, Vol.
3.1.G. W. K. Chai, E. Y. N. Oh and A. S. Balasubramaniam. (2014).
"In-Situ Stabilization of Road Base Using Cement-A Case Study
in Malaysia", School of Engineering, Griffith University, Australia