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South Africa and weapons of mass destruction - Wikipedia

From the 1960s to the 1990s, South Africa pursued research into weapons of mass destruction, including nuclear, biological, and chemical weapons.Six nuclear weapons were assembled. Before the anticipated changeover to a majority-elected African National Congress–led government in the 1990s, the South African government dismantled all of its nuclear weapons, the first state in the world which ...

Concrete Testing - Nova Engineering

These products are suitable for use both in laboratories and on site and include: Cube moulds; Iso moulds; Slump cones and slump sets; Nova cube moulds are rugged and have the enviable reputation of being superior to any other mould in South Africa. They are of 3 piece construction (base and 2 sides) and are made from high grade cast iron.

COURSES | theconcreteinstitute

The cube test – how to make cubes and what they mean. The effect of hot/cold weather on the transport of concrete. Delays, contamination or spillage during transport. Access to the worksite. The effect of the addition of water. Transport of concrete around the site after discharge. Things to observe on-site. Washing out of the truck. Customer ...

concrete, plaster & mortar mixes for builders

concrete, plaster & mortar mixes for builders 1. concrete 1.1 large batches: use only common cement complying with SANS 50197 Low-strength concrete suitable for: house foundations To make 1 cubic metre of concrete you will need: 5,8 bags cement …

SOUTH AFRICAN PAVEMENT ENGINEERING MANUAL

South African Pavement Engineering Manual Chapter 13: Quality Management Preliminary Sections Page ii SCOPE The South African Pavement Engineering Manual (SAPEM) is a reference manual for all aspects of pavement engineering. SAPEM is a best practice guide. There are many appropriate manuals and guidelines available for

CMM - Full Version

Concrete 8-3 Drying shrinkage testing must comply with SABS Methods 1085 and 836 and the relevant clauses of the Standard Specification. Drying shrinkage should not exceed: • 0.040% when testing the concrete mix design, and • 130% of that of the reference aggregate for both sand and stone for prestressed concrete, or

SOUTH AFRICAN NATIONAL STANDARD

SANS 5862-2, Concrete tests – Consistence of freshly mixed concrete – Flow test. SANS 5863, Concrete tests – Compressive strength of hardened concrete . SANS 5865 (SABS SM 865), Concrete tests – The drilling, preparation, and testing for compressive

SOUTH AFRICAN NATIONAL STANDARD

EN 12390-4, Testing hardened concrete Compressive strength Specification for testing machines. Amdt 1 SANS 5860, Concrete tests Dimensions, tolerances and uses of cast test specimens. SANS 5861-2, Concrete tests Sampling of freshly mixed concrete. SANS 5861-3, Concrete tests Making and curing of test specimens. 3 Apparatus Compression testing ...

Poly Test Instruments, South Africa – South African ...

Based in Gauteng, South Africa, Poly-Test Instruments represents International manufacturers of production equipment, materials testing and analytical instruments. The companies emphasis is on cost-effective quality in the manufacturing environment.

Concrete - Protsurv

DURBAN. Protsurv Coastal Top Floor, 2 Lucas Drive Hillcrest, KZN Cell (+27) 72 038 6137 Website:

Contest - Concrete Technology Services Durban

-Testing of concrete and precast concrete products: Contest have the facilities to offer a wide range of tests on hardened concrete, which includes a number of different compressive test methods, flexural and tensile t ests on concrete cores, cubes, beams as well as on site testing.

Laboratory Testing - Statens vegvesen

2.12 Making of Concrete Test Cubes BS1881:Part 108:1983 2.13 Concrete Cube Strength BS1881:Part 116:1983 Tests on Asphalt and Bituminous Materials 3.1 Pre-conditioning of Bitumen Samples Prior to Mixing or Testing NPRA 014 test 14.511 3.2 Density of Bituminous Binders ASTM D70-97 3.3 Flash and Fire Point by Cleveland Open Cup ASTM D92-90

Evaluation of rock types for concrete aggregate ...

CITATION: Van Wyk, P. R. & Croukamp, L. 2014. Evaluation of rock types for concrete aggregate suitability for the construction of a gravimeter vault and access road at the Matjiesfontein Geodesy Observatory site near Matjiesfontein, South Africa. Journal of the South African Institution of Civil Engineering, 56(2):30-36.

Reliance Laboratory Equipment – Laboratory Equipment

RELIANCE LABORATORY EQUIPMENT. Reliance Laboratory Equipment was established to offer our clients a full range of products for on-site and laboratory tests on aggregates, rock, soil, bitumen, asphalt, cement, concrete, mortar and steel for the construction and civil engineering industry.. Reliance Lab Equipment is a Pretoria based company supplying customers nationwide.

University of Cape Town - OpenUCT Home

tested in the University of Cape Town, New Engineering Building (NEB) laboratory according to . South African National Standards. Twelve concrete mixes were designed using two concrete strengths (30 and 50 MPa), three maximum aggregate sizes (9.2, 19.2 and 26.5 mm) and two aggregate types, namely greywacke and quartzitic sandstone.

CONCRETE STANDARDS | theconcreteinstitute

SABS method 865:1994 (SANS 5865) Concrete tests - the drilling, preparation, and testing for compressive strength of cores taken from hardened concrete SANS 6085:2006. Concrete tests - initial drying shrinkage and wetting expansion of concrete

SOUTH AFRICAN NATIONAL STANDARD

3.3 Steel float, for finishing off the surface of the concrete in the filled mould. 4 Preparation of test specimens 4.1 Moulding 4.1.1 General Using the composite sample collected on site or from concrete mixed in the laboratory (see SANS 5861-1 and SANS 5861-2, as relevant), prepare at least three specimens for each test age

Aggregate - AfriSam

factor, eg concrete used for radiation shielding is made from high-density aggregate. In addition, the relative density of the aggregate is used in calculating the absolute or solid volumes of materials in a concrete mix and thus the yield. The apparent relative density of aggregate generally varies between 2.5 and 3.0. Water absorption

Concrete Test Cubes South Africa Photos

Concrete 4 U. Strength Concrete. Mortars, Plasters & Screeds; Special Application Concrete. Go to our product page to see what kind of products we offer.read more → Head Office. 109 Cape Road, Mill Park, Port Elizabeth: Tel: +27 (0)41 501-5400: Fax: +27 (0)41 373-9446: Sales.

Services | Labco | Civil Engineering Material Testing

Concrete Testing. Labco provides concrete testing services from the initial assessment and investigation at design stage, monitoring of batch plant operations and materials to placement phase, monitoring of workability (slump), veebee, and manufacturing of concrete cube samples.

Innovative Concrete Solutions (ICS) Kwazulu-Natal

Site sampling and testing required on-site, such as making of test cubes and coring of concrete are another of our services. Chemical testing : Testing of water, hardened concrete, mortar and plaster as well as aggregates can be performed by our competent staff when required .

Testing of Materials and Soils - Encyclopedia of Life ...

TESTING OF MATERIALS AND SOILS F. Druyts Pr. Eng., Department of Water Affairs and Forestry, Pretoria, South Africa Keywords: Materials testing, soil mechanics/properties, construction materials, earth dams, concrete dams, rock mechanics, concrete aggregates, quarries and borrow pits, sand and gravel, moisture content, dam construction/design ...

Surveying Instruments/Concrete Testing Equipment/Soil ...

Protsurv Geo Centre Namibia specializing in Surveying Instruments, Soil Testing Equipment and Concrete Testing Equipment (concrete cube press), started trading in 2008 as family run business and has grown over the 10 years since its inception.

Foundations Archives - Building Regulations South Africa

SANS10400 are the Building regulations in South Africa, and both international and national standards, are fundamental to successful building and construction projects, both big and small. Building Regulations (NBR) Intro. ... Cold Weather and Concrete Foundations The surrounding local temperature has a big effect on the setting time of concrete.

Concrete moulds in South Africa | Gumtree Classifieds in ...

Exciting opportunity for anyone looking to try their hand at being an entrepeneur!A profitable and sustainable business venture in the current market.Small Brick and Paving business up for sale.1 x Big block making machine1 x Standard brick making machineover 100 paving and cladding moulds stacking boards also included+ plenty of extra's upon viewing, including concrete mixer and pigmentPaving ...

Welcome to Labco | Civil Engineering Material Testing

Welcome to Labco. Labco Southern Africa (Pty) Ltd provides materials testing in the fields of Soils, Asphalt, Bitumen, Concrete and Aggregates to our customers around South Africa.. Our diverse client base includes Consulting Engineers, Civil and Building Contractor, Architects, all tiers of Government Departments, Developers, Homeowners and many more.