CONCRETE TECHNOLOGY & CONSTRUCTION MATERIAL SURVEY

Mix design of concrete, physical, thermal properties and setting up quality control system

Our expertise includes the following:
a). Construction Materials Survey for Hydropower and Irrigation Development Projects.

b) Inspection and safety evaluation of old dams, powerhouses and other hydraulic structures.
c). Setting up of field quality control laboratories.
d). Supervision and execution of quality control measures.
e). Temperature control studies on mass concrete for dams & other massive structures.
f). Concrete Mix Design for design of structural grade concrete, mass concrete, high performance concrete, self compacting concrete and high strength concrete.
g). Laboratory testing of concrete for compressive strength, tensile strength, modulus of elasticity & Poisson’s ratio and concrete permeability etc.
h). Tests on hardened concrete: cement content, sulphate content and chloride content
i). Laboratory testing of construction materials such as Cement, Lime, Pozzolana, Coarse Aggregate, Fine Aggregate, Mixing and Curing Water, Bricks, Building Stones etc.
j). Grout mix design studies.
k). Alkali -aggregate related investigations.
l). Petrographic studies

NON-DESTRUCTIVE TESTING OF STRUCTURES

Building condition survey, structural analysis and audit, pile integrity testing and assessment of vulnerable structures

Non destructive Testing (NDT) is used to examine condition or quality of a structure without damaging it. We offer the following services using state-of-the-art testing techniques:

Reinforced Cement Concrete (RCC)

– Rebound Hammer tests for assessing the concrete compressive strength.
– Ultrasonic pulse velocity tests for establishing quality of concrete.
– Drilling out concrete cores for laboratory testing to determine compressive strength.
– Tests for determining depth of carbonation in concrete.
– Half-cell potential tests for determining likelihood of corrosion of reinforcement.
– Tests for determining the chloride & sulphate contents in concrete.
– Rebar locator tests for determining details of rebars in various RCC members and for assessing concrete cover.
– Permeability of insitu concrete.
– Pull Out (LOK), Pull Off and Break Off Tests.

CONDITION SURVEY

Mapping defects in buildings, bridges and dams through rapid visual survey to plan NDT locations for effective testing.

SLOPE STABILISATION

Investigate, design and execute for cost effective solutions to slope stability problems

We provide total solution for slope stability – carryout investigations to assess the geology and determine the strength parameters, analyse to assess safety, design appropriate measures for stabilizing the slopes, and implement the solution. Our slope stability measures include the following:

– Soil Nailing
– Micropiles
– Grouted & Driven Anchors
– Rock Bolting /Anchoring
– Geogrids

GEOPHYSICAL INVESTIGATIONS

Measurement of geophysical properties for interpreting ground profile.

The application of geophysics to challenging geologic, environmental, engineering, or other scientific problems provides an alternative, often unique, insight into the subsurface unlike more conventional assessment methods such as drilling. We offer site investigation strategies that cover a large area of the site in a short time and with a low cost. We provide high quality services to address a wide spectrum of needs and structures like dams, tunnels, underground powerhouses, underground storage tanks, etc. Objectives of investigations can include environmental site assessments, determining depth to rock and mapping subsurface features in geotechnical investigations, fracture and aquifer mapping in hydro geologic investigations, providing detailed stratigraphic data in coal explorations, and locating buried objects in archaeological studies.
Our services include the following but are not limited to:

  • Seismic Refraction Survey
  • Cross Hole, Up Hole & Down Hole Tests
  • Electrical Resistivity Test
  • Sonic Tomography
  • GPR Investigations covering profiling and detection of buried utilities

ROCK MECHANICS

Specialized insitu and laboratory tests for evaluating rock mass

Our capability in rock mechanics includes field and laboratory testing and interpreting the results for determining properties and behavior of intact rock, rock joints and rock mass.

GEOTECHNICAL INVESTIGATIONS

Insitu tests and laboratory investigations for determining engineering design parameters

Our geotechnical engineering capability includes field and laboratory testing and interpreting the results for determining soil stratification, physical properties and strength behavior, bearing capacity, assessing risks posed by site conditions, designing earthworks and foundation structures, and monitoring site conditions. A thorough field investigation of any civil infrastructure is called for in order to avoid construction delays and cost over-runs due to unforeseen conditions in the ground. Cost effective site investigations, combined with experienced interpretation of the data collected, constitute an essential element of project risk assessment and management.
We provide complete feasibility assessment, design and project management services in all aspects of ground engineering.