Vilnius Gediminas Technical University

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SCIENTIFIC INSTITUTE OF THERMAL INSULATION

Contacts

Address: Linkmenų g. 28, 37 kab.

Phone: +370 5 275 0001

Internal phone: 9324

E-mail: crypt:PGEgaHJlZj0ibWFpbHRvOnRlcm1vQHZndHUubHQiPnRlcm1vQHZndHUubHQ8L2E+:xx

Working Hours

Monday – Thursday 08.00 – 16.45
Friday 08.00 – 15.30

Lunch Break: 11.30 – 12.00

Map

Laboratory of Acoustics (accredited)

The laboratory has more than 30 years of experience in the field of building and partition constructions acoustics, noise control in residential and working environments. It also carries out laboratory and in situ accredited measurements of acoustic descriptors, sound classification of buildings, environmental noise monitoring, as well as conducting scientific research.

The laboratory was given an accreditation certificate Nr.LA.01.28 in 28-09-1999 and was approved in technical expertise in accordance with accreditation scope (see crypt:PGEgaHJlZj0ibWFpbHRvOmh0dHA6Ly93d3cubmFiLmx0Ij5odHRwOi8vd3d3Lm5hYi5sdDwvYT4=:xx) by Lithuanian National Accreditation Bureau (LA).

Notified testing laboratory status was achieved when VGTU Institute of thermal insulation (laboratory of acoustics) began to carry out notified measurements on sound absorption of thermal insulation materials and conformity assessment under provisions of Directives 89/106/EEC, approved by LA's scope of accreditation in 02-10-2009 (Europe's granted notification certificate Nr.1688-CPD). In 01-07-2013 the laboratory was reaccredited (Nr.1688-CPR) to perform notified stability of acoustic properties performance evaluation and verification of construction products (thermal insulation materials, glass units, windows and doors) in accordance with EU regulation Nr.305/2011 (see scope of notification at http://www.nab.lt and http://europa.eu.int/comm/enterprise/nando-is/cpd).

Research Areas:

– Acoustic properties of building materials and constructions;

– Sound insulation properties in constructions and of building elements;

– Protection against aviation and environment noise;

– Noise in buildings.

Research of buildings and partition constructions protection against noise:

– Airborne sound insulation measurements of partitions between dwellings and other elements (facade, doors, windows, etc.) at residential and public buildings;

– Floors airborne and impact sound insulation measurements at residential and public buildings;

– Reverberation time measurements at residential, public and other types of buildings;

– Radiated noise measurements from building’s engineering equipment;

– By the basis of determined acoustic descriptors the laboratory is accredited for evaluating buildings, such as apartments, rest & nursing homes, science purpose constructions or hotels sound class rating and signing a sound classification protocol in accordance with STR 2.01.07:2003. The protocol is necessary for Building approval commission to certify the building as appropriate to use in accordance with STR 1.11.01:2010 Annex III page 11.

Consults specialists and habitants on:

- designing sound class of a building (its elements);

- sound insulating and absorbing material effective appliance issues;

- improvement of acoustical comfort conditions and protection against noise issues;

- improvement of partition constructions (walls and floors) sound insulation due to the causes of increased noise in residential areas and dwellings.

Building materials and products testing:

– Building materials sound absorption measurements in reverberation chamber.

– Sound power evaluation of electrical machinery and household appliances.

– Sound insulation laboratory measurements of windows, doors, glass units and partition constructions in two adjacent reverberation rooms.

– Sound absorption and insulation measurements of road noise installations (acoustic barriers) in reverberation chambers.

– Outdoor machinery and equipment sound power levels determination and noise emission declaration under 2000/14/EC (STR 2.01.08:2003).

Noise measurement:

– Noise sources in the living environment: vehicles, railroads, aircraft and industrial facilities measurements of all noise descriptors.

– Evaluation of installed road noise barriers acoustical performance.

– Environmental noise monitoring and noise impact assessment.

– Prepares recommendations for habitants and organizations to reduce noise indoor the building premises and in its outdoor environment.

– Laboratory specialists are involved in international projects, as well as with the Technical Committee LST TK 31 "Akustika" and CEN/ISO standards development working groups.

Laboratory of Building Products Technology

The laboratory was created in year 2010 by joining 3 laboratories (Refractory Concretes, Local Binding Materials and Physical-chemical Investigations). We use our competence in national and international research projects.

Special facilities

– X-Ray diffractometer (Dron 7);

– Pore meter (Poremaster PM-33-12);

– Derivatograf (Linseis STA PT-1600);

– Dilatometer (Linseis L76);

– Scanning electron microscope (JEOL 7600F);

– Ultrasonic cement paste testing equipment (Shleibinger device with Pundit 7);

– Calorimeter (ToniCal III);

– Universal electromechanical testing equipment (Tinius Olsen H200KU);

– Ultrasonic pulse velocity test equipment (Pundit 7);

– Autoclave with capacity of 100 liters and maximal pressure of 2.4 atmospheres;

– Autoclave with shielded drive RGC-10-10;

– Vibro viscometer (A&D SV-10);

– Differential isothermal micro-calorimeter (MDK 3);

– Electric ovens SNOL with software.

Research Areas

We perform both fundamental research and application-oriented research (R&D) not only on cement-based (mortars, plasters, concretes) but also on other building materials (ceramics, silicates).

– Cement hydration;

– Rheology;

– Admixtures;

– Durability;

– Corrosion;

– Microanalysis;

– Application of advanced materials in construction;

– Concrete for energy technologies;

– Cement-based composites;

– Ceramic-based composites.

– Research into the relationship between raw materials, technology of production and utilization of industrial wastes;

– Application of nanotechnologies in advanced building materials;

– Physical and mechanical tests;

– Chemical and mineralogical analysis;

– Microscopy investigations;

– Scientific research, development and characterization of refractory concretes;

– Scientific research, development and characterization of autoclaved and non-autoclaved aerated concretes;

– Fresh concrete control;

– Consulting about problems in the areas of cement, mortar, concrete and admixtures;

– Cooperation in the elaboration of national standards.

Laboratory of Building Materials (accredited)

– Research, creation and application building materials, construction and technologies;

– Research of durability of building materials and products;

– Research of ceramics products and sintered ceramics;

– Application and creation of technologies of a waste processing of manufacture of a mineral wool and other waste products;

– Researches of properties and ranges of application of products from natural anhydrite and phosphogypsum.

Laboratory has an experience in providing proficiency testing schemes. Laboratory has provided inter-laboratory comparisons and has written corresponding reports:

– “Thermo 2000”. Thermal conductivity and compressive strength testing of thermal insulating products (PT program for building products testing laboratories of Central and East European Countries, 2000);

– “EA ILC MT 2. Testing of thermal insulating materials and products” (PT program for countries – EU members, 2003-2004).

Laboratory of Thermal Insulating Materials (accredited)

The scientists of Laboratory have been testing physical-mechanical and thermal-technical characteristics of thermal insulating materials and products for more than 40 years. The main areas are the investigation of compressive behaviour under short and long-term compression as well as long-term prediction of their deformability. Other area is the investigation and prediction of moisture characteristics and their influence on thermal conductivity while calculating thermal characteristics of layered building envelopes.

Since 1996 the Laboratory has been accredited for quality assurance testing of thermal insulating materials and products (relevant flexible accreditation scope). Accreditation certificate No LA.01.004 (see http:/www.nab.lt).

Since 2005 the Scientific Institute of Thermal Insulation has been registered as notified body (identification number 1688) for the evaluation of performance according to requirements of Regulation (EU) No 305/2011 of the European Parliament and Council (according to the 3^rd system). The main function of Laboratory under evaluation of performance according to the 3^rd system is product type determination tests.

On the basis of contractual agreements the Laboratory may perform the following work:

– investigations of physical-mechanical and thermal-technical characteristics of thermal insulating materials and products;

– calculation of thermal resistance and thermal transmittance of building materials;

– creation of indirect methods for the quality control of thermal insulating materials during the process of production (e.g., control of thermal conductivity and strength characteristics of expanded polystyrene slabs according to the density of the product);

– processing of the data relating to any area using mathematical-statistic methods;

– technical and mathematic-statistical assistance in organizing of inter-laboratory comparison testing and processing results in the area of construction materials and products and in the related areas (e.g., chemistry);

– development of new thermal insulating materials from local renewable materials.

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