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Temperature rise in concrete
July 5, 2015@12:39 pmIn Malaysia, generally for 1m3 size concrete ~ the rule of thumb is about 13.5°C/100kg Portand Cement (OPC), for 380kg cement content, the temperature rise will be 51.3°C + 30°C or equal to 81.3°C. If blended cement is used, the temperature rise will be proportionately lower. As the specification always allows the use of
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Type of cement used in Marine
July 5, 2015@12:30 pmFor type of cement to be used in marine conditions, there is the latest BS 8500-1:2006 + A1:2012. In Malaysia, this British Standard is also adopted into MS 523-2:2011 Concrete Specification. Please refer to the extract of BS 8500-1:2006 + A1:2012, marine conditions is under Exposure Classes XS1- XS3 (Table A.1) . Hence, considering the
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GGBS and Fly Ash in Malaysia
July 4, 2015@10:25 amIn MS EN 197-1 on cement specifications stipulates 27 common cement, where both Ground Granulated Blastfurnace Slag (GGBS) and Fly Ash are two commonly ‘recycled’ materials used to partially replace Portland Cement (OPC) in cement production. These materials are also pozzolanic in nature i.e. they consume the lime from OPC hydration to form additional cementitious
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GGBS or Fly Ash in Concrete Batching Plant
July 4, 2015@10:19 amIn Malaysia, cement manufactured will propose the use of pre-blended cement instead of supplying Portland Cement (OPC) mix with Ground Granulated Blastfurnace Slag (GGBS) or Fly Ash to concrete batching plant. The main reasons are less hassle and less problems in site batching. However, in most of the main concrete batching plant, they are having
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What is Base Course?
July 4, 2015@10:13 amThe base course or basecourse in pavements is a layer of material in an asphalt roadway, race track, riding arena, or sporting field that is located directly under the surface layer. If there is a subbase course, the base course is constructed directly above this layer. Otherwise, it is built directly on top of the
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Blastfurnace Cement as an alternative to Sulphate Resisting Portland Cement (SRPC)
July 4, 2015@9:55 amIn practice, cement supplier will counter propose to the contractor the use of an equivalent product for Sulphate Resisting Portland Cement (SRPC) which is Blastfurnace Cement complying to MS EN 197-1, CEMIII/B. One of the advantage is due to the pricing issues (Blastfurnace Cement is much cheaper). Blastfurnace Cement usually is manufactured with the combination of
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Production of Blastfurnace Cement
July 4, 2015@9:40 amBlastfurnace Cement is a special blend of two components; ground granulated blastfurnace slag (GGBS) and portland cement (OPC). GGBS is a by-product of the iron-making process in a blastfurnace. It is produced by the rapid water-quenching of the molten slag under controlled conditions. This granulation process yields sand-sized particles of highly glassy material of high
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Use of Blastfurnace Cement for Sulphate Resisting Properties
July 4, 2015@9:38 am1) Sulphate Resisting Portland Cement (SRPC) & ASTM Type V Cement SRPC is a costly and special type of cement where in the manufacturing process, one of the major compound i.e. tricalcium aluminate (C3A), is limited to < 3.5 %. Whereas for ASTM Type V cement, the maximum C3A content allowed is 5%. This C3A
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The difference between Civil Engineering and Structural Engineering
June 29, 2015@1:30 pmCivil and Structural engineering are two disciplines in the field of engineering which deals with evaluation, design construction and preservation of elements. Generally, structural engineering is categorized as an area of specialization of civil engineering. But through the years, modern development in science and architecture has made structural engineering into a separate discipline. The difference
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Avoided “Waste” (Disposal, Energy, and Emissions)
June 29, 2015@10:33 amWhen blast furnace slag (whether slag aggregate or slag cement) is beneficially used, landfill disposal of this byproduct material is avoided. Avoiding disposal for nearly all blast furnace slag produced is, to a great extent, accomplished through the current levels of beneficial use. It is important to continue, and even strengthen, existing policies and programs
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