Injection
Solutions for Underground Construction

2Injection
from Master Builders Solutions

Master Builders Solutions
The Master Builders Solutions brand brings all of our expertise
together to create chemical solutions for new construction,maintenance, repair and renovation of structures. Master
Builders Solutions is built on the experience gained from morethan a century in the construction industry.
Our know-how and experience as a global community of Master
Builders Solutions construction experts form the core of Master
Builders Solutions. We combine the right elements from ourportfolio to solve your specific construction challenges. Wecollaborate across areas of expertise and regions and draw on
the experience gained from countless construction projects
worldwide. We leverage global Master Builders Solutions
technologies, as well as our in-depth knowledge of local building
needs, to develop innovations that help make you more
successful and drive sustainable construction.
The comprehensive portfolio under the Master Builders
Solutions brand encompasses concrete admixtures, cement
additives, chemical solutions for underground construction,waterproofing solutions, sealants, concrete repair & protection
solutions, performance grouts, and performance flooringsolutions.

Global underground construction team

Our comprehensive portfolio

Master Builders Solutions, with its global underground construction team, provides reliable, customer-oriented solutions focused on your needs in the tunneling and mining
industries all over the world. We recognize that yoursuccess is underpinned by our ability to deliver solutions
that meet or exceed your critical needs. By accompanying
you from the start of your project and understanding theissues that are important to you, we can contribute to yoursuccess. We support you with product training and quality
control, and our professional technical services team is on
hand around the clock, helping you with specialist technicaladvice and trouble shooting.

n Concrete admixtures
n Cement additives
n Chemical solutions for underground constructionn Waterproofing solutionsn Sealants
n Concrete repair and protection solutionsn Performance groutsn Wind turbine groutsn Performance flooring solutions

Injection
from Master Builders Solutions

Avoid the Unexpected with Pre-Injection

Ground Consolidation

Unexpected water ingress and poor groundconditions during underground construction
usually escalate costs, can have a negative
influence on the environment, and inevitablycause significant delays. To counteract theserisks, an economical approach is to pre-inject
the ground ahead of the advancing face to avoid
water ingress occurring, and to stabilize theground.
Microcements and colloidal silica, thelatter also known as mineral grout, allow
a cost-effective approach and improve
working safety with minimal environmental
consequences.

Fast-reacting and non-water-sensitive polyurea
silicate systems quickly stabilize poor ground.
The high-foaming version is excellent for void
filling. The less water-sensitive polyurethanesare also suitable to strengthen the ground.

Water Stopping
Foaming, water-sensitive polyurethanes are
ideally suited to combat water ingress quickly
and effectively. For particularly difficult cases
the solution is a combination of drainage andthe injection of a fast-reacting foaming resin.

Crack Sealing and Concrete
Rehabilitation
The range of acrylic resins are particularly
suitable for rehabilitation injection for castconcrete, segment linings and brick & masonry
lined tunnels.

34Injection
from Master Builders Solutions

Microcement

Excavation face

Injection drillhole
Tunnel invert

Injectionlance

Stable microcement penetrating fine fissures

Fast Setting, Fast Cycle
MasterRoc MP microcements are a range of superfine
portland cements for pre-injection application. Due to theirfineness they provide extremely effective penetration intofine cracks in rock and fine grained soils to give efficientwater tightness, stability and durability.
They represent a significant technological advantage incementitious injection. Their unique and innovative featureis rapid and controlled setting, allowing uninterrupted
blasting rounds or continued injection sequences, thereby
enhancing productivity considerably.
Where it would take 6 hours between blasting roundswith normal cement, the waiting time is only 2 hours withMaster Builders Solutions‘ microcements.

Stable (left) vs. unstable (right) groutInjection
from Master Builders Solutions

Fine fissure
0.02 mm

Colloidal Silica,
MasterRoc MP 320
0.015 µm

MasterRoc
MP 9009 µm

MasterRoc
MP 80012 µm

MasterRoc
MP 65015 µm

Ordinary Portland Cement
CEM I 52.5
40 µm

Illustration of the difference in D95 values of MasterRoc MP microcements compared to ordinary Portland Cement

Microcement - Stable Penetrating Grout
A stable grout is crucial for efficient penetration
into the rock, and cannot be achieved withordinary cement. A stable grout can travel far
without losing its effectiveness, reducing timerequired for a given result as less drilling andless pumping are necessary. Microcements
penetrate small cracks and inter-granular spaces
very well, and allow high pumping pressure
where needed as the grout remains stable. A
further benefit is that standard cement injection
equipment can be used.

Limit Grout Travel Distance withAccelerated Setting of Microcement
The setting of microcement grout suspensions
can be accelerated with a controlled dosageof a specially designed alkali-free accelerator.
Using this unique method, the open time of thegrout suspension can be controlled from 1-2
minutes up to approximately 20 minutes,
remaining pumpable before it sets and becomessolid.
This is particularly suitable for situations wherecontrolled injection is needed to limit grout
spread in very permeable rock masses andsoils, as well as for cold groundwater conditions
where very fast setting is necessary.
MasterRoc MP microcements are available on
special request as slower setting sulphate
resisting versions and in different grades
relating to the maximum particle size as givenby the D95 values illustrated in the image above.

56Injection
from Master Builders Solutions

Polyurethane andPolyurea Silicates
Water Stopping, Water Sealing,
Consolidation and Cavity Filling
The MasterRoc MP 350 series of polyurethanes
and the fire-resistant (according to DIN4102-B2)
MasterRoc MP 360 series of polyurea silicatesare designed for water stopping and sealing,strata consolidation and cavity filling
applications, meeting the modern-day demandsof the tunneling and mining industry. The rangevaries from a convenient 1-component PU forsmall water sealing jobs to specialist robust
2-component systems to effectively stop
massive water ingress problems.

Many of the products for preventing water
ingress can be adjusted on site to give varying
performance properties to suit the conditions
using different accelerators. All MasterRoc MP
polyurethane and polyurea silicate products are
solvent free, and all foaming products build
closed-cell foams, acting as a water barrier.
They have been tested and certified by external
institutes in terms of technical properties andhealth and safety aspects.

Injection
from Master Builders Solutions

Ground consolidation with MasterRoc MP 368

Cavity filling with MasterRoc MP 367 Foam

Water Stopping

Ground Consolidation

MasterRoc MP 355 1K

MasterRoc MP 358 GS / MP 358 SC

 To stop low- to mid-volume water ingress Reaction time: 10 to 120 seconds at 20°C
(accelerator provided to adjust reaction time) Foam factor: 20 to 30
 MasterRoc MP 355 1K DW is an almost
identical product with a potable water
approval
 1-component pump To consolidate fractured ground,low sensitivity to water Reaction time: 30 to 70 seconds
 Foam factor: GS – up to 1.5, SC – up to 3
 2-component pump

MasterRoc MP 355
 To stop mid- to high-volume water ingress Reaction time: 20 to 70 seconds dependingon accelerator type
Foam factor: 8 to 20 depending on acceleratortype MasterRoc MP 355 Thix is a similar productfor very high-volume water ingress 2-component pump
Water Sealing

MasterRoc MP 350
 For permanent structural crack sealing ofconcrete and masonry structures
 Reaction time: 30 to 100 seconds
 Foam factor: up to 8
 1-component pump

MasterRoc MP 368
 Dense glue-like resin for fractured rock,gravel and coal, not sensitive to water Reaction time: 90 to 120 seconds
 Foam factor: 1 2-component pump

MasterRoc MP 367 Foam
 Brittle foam for cavity filling in rock,gravel and coal, not sensitive to water Reaction time: 10 to 60 seconds
 Foam factor: 2 to 30
 2-component pump

7

8Injection
from Master Builders Solutions

Acrylic Resins
Crack injection in tunnel linings
Possibly leaking joints

Goal of injection:
to section and create barriers,
subsequently removing water.

Water can flow in every direction,
before and during injection.

Strong Durable Gels for Crack Sealing
and Concrete Rehabilitation
The MasterRoc MP acrylic series is a range ofhigh-performance acrylic resins thatpermanently seal the finest cracks in concrete
instantly and even accommodate limited
movement due to their flexibility and swellingcapability. They are also ideal products forcurtain injection behind leaking tunnel liningsand diaphragm walls.
Furthermore, they can stabilize weak soil andsand immediately and seal off water. They arewidely used in major infrastructure projects suchas power stations’ generator housings for thepermanent waterproofing of concrete defects.

Certification

The European CE certificate specifies
requirements and conformity criteria for theidentification, performance (including durabilityaspects) and safety of injection products for the
repair and protection of concrete structures.
Two of our latest acrylics, MasterRoc MP 303
CE and MP 307 CE have CE certification for
the “swelling fitted filling of cracks, voids andinterstices in concrete” according to EN 1504-5.

Injection
from Master Builders Solutions

Mastering underground construction challenges requires the right partner.
Continuous innovation and customized solutions ensure that customers
using Master Builders Solutions operate successfully, and to the highest
safety standards.

Crack Sealing and Rehabilitation

Ground Consolidation

MasterRoc MP 303 CE

MasterRoc MP 309

 Flexible with good adhesion to wet rockand concrete and can swell up to 200%
 Reaction time: 10 seconds to 3 minutes
 Viscosity: 5 mPa·s
 2-component pump

 Extremely strong with good adhesion to wetrock and concrete, for consolidation in silty
and sandy strata Reaction time: 45 seconds to 8.5 minutes
 Viscosity: 13 mPa·s
 2-component pump

MasterRoc MP 307 CE
 Rubber-like and very flexible with good adhesion
to wet rock and concrete, balances groundmovement, for “living cracks”
 Reaction time: 4 to 17 minutes
 Viscosity: 7 mPa·s
 1- or 2-component pump

910Injection
from Master Builders Solutions

Colloidal Silica

The Mineral Grout
MasterRoc MP 320 and MP 325 are colloidal
silica gels, referred to as “mineral grouts”. Theseare not chemical grouts and consist
only of natural ingredients (quartz sand, waterand salt). They are made of a stable liquid
dispersion of discrete, nanometric sphericalparticles composed of 100% amorphoussilicon dioxide. The colloidal silica products
are used in jointed rock and fine grainedsoils mostly as a supplement to microcement
injections to achieve the final required result andwhere durable long-term solutions for watersealing and ground stabilization are required.

Having a viscosity similar to water, colloidal
silica penetrates soils and fine rock fissures very
easily, ensuring unrivalled penetration andpermanent stabilization of fine, silty sands.
Unlike sodium-silicate-based products(waterglass), colloidal silica is durable and does
not affect the pH value of the ground water, andcontinually gains strength over time. The geltime can be adjusted to between 10 minutes and2 hours, allowing for adaptation to the needs ofeach project. A further benefit is that standard
cement injection equipment can be used.

Injection
from Master Builders Solutions

Training and Education
We provide technical injection training courses
on a frequent basis centrally located in theHagerbach underground facility in Switzerland.
The courses are organized both as demonstration workshops in realistic underground settings
and as practical injection operators’ training.
The demonstration workshops are practical“show-and-tell” sessions and aim to visualize
and explain the possible types of applicationand the technical performance of our injection
systems.
The practical injection operators’ training isoffered exclusively to injection customers who
are working with Master Builders Solutions
injection systems. During this training theparticipants are given the chance to work insmall groups, taking part in hands-on exercises
under the supervision of experienced

instructors. The main objective is to gain
practical skills for the correct application andexecution of injection works.
In addition, tailored training is organized forindividual projects worldwide when required bycustomers.

Technical Services
We provide more than simply a range ofproducts. Assisting customers in selecting theright injection system and setting out theinjection method, as well as providing initialsupervision and site training of the customer’spersonnel, is an essential part of our concept.
We work together with suppliers of equipment
and injection accessories to provide the best,
most cost-effective and complete technologysolution.

More brochures on our underground construction solutions are available athttps://ugc.master-builders-solutions.com/en
Documentation available on request: Reference list
 Project reports
 Technical data sheets Design guidelines
 Method statements

11

Master Builders Solutions
for the Construction Industry
MasterAir
Complete solutions for air
entrained concrete

MasterFlow
Solutions for precision grouting
MasterFiber
Comprehensive solutions for fiber
reinforced concrete

MasterBrace
Solutions for concrete
strengthening

MasterGlenium
Solutions for high performance
concreteMasterCast
Solutions for the manufactured
concrete product industry
MasterCem
Solutions for cement manufacture
MasterEase
Low viscosity for high performance
concrete
MasterEmaco
Solutions for concrete repair
MasterFinish
Solutions for formwork treatment
and surface improvement		

MasterInject
Solutions for concrete injection
MasterKure
Solutions for concrete curing
MasterLife
Solutions for enhanced
durability
MasterMatrix
Advanced rheology control for
concrete

MasterPel
Solutions for hydrophobization,
anti-efflorescence andsurface protection
MasterPolyheed
Solutions for mid-range concrete
MasterPozzolith
Solutions for water-reduced
concrete

MasterSet
Solutions for set controlMasterSphere
Solutions for guaranteed
freeze-thaw resistance
MasterSuna
Solutions for sand and gravelin concrete

MasterProtect
Solutions for concrete protection

MasterSure
Solutions for extraordinary
workability retention

MasterRheobuild
Solutions for high strength
concrete

MasterTop
Solutions for industrial andcommercial floors

MasterRoc
Solutions for undergroundconstruction

Master X-Seed
Advanced accelerator solutions
for concrete

MasterSeal
Solutions for waterproofing
and sealing

UcreteFlooring solutions for harshenvironments

QUANTIFIED SUSTAINABLE BENEFITSADVANCED CHEMISTRY BY MASTER BUILDERS SOLUTIONS

Let the numbers do the talking: We have portrayed some of our most eco-efficient productsolutions for concrete and precast production, construction, civil engineering, and flooring.

sustainability.master-builders-solutions.com

Master Builders Solutions
Deutschland GmbHSalzachstr. 1768199 Mannheim, Germany
ugc@mbcc-group.com

Master Builders Solutions
Admixture Systems US, LLC
23700 Chagrin Blvd
Beachwood, OH 44122, USA
P +1-216-839-7500
admixtures@mbcc-group.com

Master Builders Solutions
Brasil Indústria e Comércio
de Químicos para
Construção Ltda.
Rua Costa Barros, 3089, Sitio
Pinheirinho,
Vila Prudente03210-001, Sao Paulo, Brazil
P +55 (11) 3164-4277
sac.eb@mail.mbcc-group.com

MB Solutions Singapore
Pte. Ltd.
1 Harbourfront Avenue #07-07/08
Keppel Bay Tower
Singapore, 098632
P +65 6232 4888

Master Builders Solutions
Construction Chemicals LLC
Head Office: Dubai Investments
Park,
PO Box 37127
Dubai
United Arab Emirates
P +971 4 8090800
ugc@mbcc-group.com

The data contained in this publication are based on our current knowledge and experience. They do not constitute the agreed contractual quality of the product and, in view of the many factorsthat may affect processing and application of our products, do not relieve processors from carrying out their own investigations and tests. The agreed contractual quality of the product at the timeof transfer of risk is based solely on the data in the specification data sheet. Any descriptions, drawings, photographs, data, proportions, weights, etc. given in this publication may change without
prior information. It is the responsibility of the recipient of our product to ensure that any proprietary rights and existing laws and legislation are observed (01/2021).
® = registered trademark of MBCC Group companies in many countries

MBS-01-2021-UGC-0046-EN