Leading cement manufacturer,
Bamburi Cement has urged the government and players in road
construction to incorporate Hydraulic Road Binders (HRBs) into
existing road design manuals and specifications for designers
and contractors thereby giving HRBs a legal basis of use.
Soil stabilization is the process by which the strength,
stiffness and bearing capacity of soils in road are improved by
either mechanical or chemical means.
Through the process, soils are altered and enhanced to
increase suitability for construction purposes as well as ensure
strong foundations for roads.
In Kenya, specification for soil treatment and stabilization
has been highly restrictive, allowing only the use of a CEM I
42.5 cement, traditionally known as Ordinary Portland Cement (OPC).
However, if fully embraced, the use of HRB will be a significant
milestone heralding a major change in road construction.
"We urge all players in the country’s road construction
industry to fully embrace the use of the more cost effective
HRBs as opposed to the widely used OPCs.
Laboratory tests show that use of HRBs significantly improves
stabilized soil thereby translating to more durable roads," said
Bamburi Cement Chief Executive Officer Mr. Seddiq Hassani.
He was speaking during a conference organized by the cement
manufacturer and Panafrican Equipment in conjunction with the
Materials Testing and Research Department in the State
Department of Infrastructure - Ministry of Transport,
Infrastructure and Urban Housing to create awareness on use of
new binders and technologies, and construction equipment in road
design and construction and also to educate on the economical
use of alternative binders to Ordinary Portland Cement (OPC)
cement in soil treatment and stabilization.
The one-day conference brought together key stakeholders in
the country’s road infrastructure industry, including road
designers, engineers in both the private and public sectors,
KeNHA, KERRA, KURRA and County Governments among others.
During the conference, Materials Testing and Research
Division, State Department of Infrastructure, Ministry of
Transport Infrastructure and Urban Development presented a
report - Verification Trials on Hydraulic Road Binders.
They had conducted laboratory trials on HRBs and their effect
in improving soil properties.
The conclusion was that certain HRB’s improve properties of
certain soils and can be used in road construction.
The report recommends that further work be conducted on
trials on actual roads across the country reflecting different
climatic and geotechnical environments.
Bamburi Cement has already developed its set of HRB products
which are ready for roll-out.