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Topic: Compressive strength

Related Topics

Compressive stress

Strength of materials

Tensile strength

Tensile stress

Deformation

Concrete

Stress (physics)

Shear stress

Plasticity (physics)

Solid mechanics

Reinforced concrete

Prestressed concrete

Elastic

Rope

Gravel

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	Compressive stress - Wikipedia, the free encyclopedia
		Compressive stress is the stress applied to materials resulting in their compaction (decrease of volume).
		Usually compressive stress applied to bars, columns, etc. leads to shortening.
		Compressive stress has stress units (force per unit area), usually with negative values to indicate the compaction.
	en.wikipedia.org /wiki/Compressive_stress (234 words)

	Compressive strength - Wikipedia, the free encyclopedia
		Compressive strength is the capacity of a material to withstand axially directed pushing forces.
		When the limit of compressive strength is reached, materials are crushed.
		Concrete can be made to have high compressive strength e.g.
	en.wikipedia.org /wiki/Compressive_strength (169 words)

	comp
		The compressive strength of mortar is sometimes used as a principal criterion for selecting mortar type, since compressive strength is relatively easy to measure, and it commonly relates to some other properties, such as tensile strength and absorption of the mortar.
		Field testing compressive strength of mortar is accomplished with Test Method C 780 using either 2 in.
		Compressive strength of mortar increases with an increase in cement content and decreases with an increase lime, sand, water or air content.
	www.maconline.org /tech/materials/comp.html (327 words)

	t3a
		Compressive strength of brick and structural clay tile is determined in accordance with ASTM C 67 Method of Sampling and Testing Brick and Structural Clay Tile.
		The shear strength of a masonry assemblage may be separated into four parts: 1) the shear strength of the unit, mortar and grout assemblage, 2) the effect of the shear span-to-depth ratio, M/Vd, 3) the enhancement of shear strength due to compressive stress, and 4) the contribution of shear reinforcement in the masonry assemblage.
		The elastic modulus is roughly proportional to the compressive strength of the masonry assemblage.
	www.bia.org /BIA/technotes/t3a.htm (3825 words)

	Rigid Plastics Compressive Properties, rupture testing, psi test
		The Compressive Property of a material is calculated as Psi required to rupture or deform a specimen in a given percentage of height.
		Compressive Properties Test method covers the determination of the mechanical properties of unreinforced and reinforced rigid plastics, including high-modulus composites, when loaded in compression at relatively low uniform rates of straining or loading.
		Compressive Properties Test - compressive strain-the ratio of compressive deformation to the gage length of the test specimen, that is, the change in length per unit of original length along the longitudinal axis.
	www.crtlabs.com /compressive_properties_testing.html (586 words)

	Long-term compressive strength - Yara
		The 16 h and 1 day strengths are about equal, while compressive strengths from 3 days and more are higher than the reference concrete.
		The relative increase in compressive strength in a OPC concrete with 2 % NITCAL
		The reason for the long-term strength increase is not known at present, but it may be due to morphology/composition changes in the binder.
	www.yara.com /en/products/gas_chemicals/applications/lt_compressive_scements.html (214 words)

	Zeolite compositions having enhanced compressive strength - Patent 7048053
		The final strength or saturated compressive strength of a zeolite composition, i.e., a compressive strength at which further setting time contributes a minimal amount to the compressive strength, is dependent upon the zeolite/activator ratio in the composition, carrier, fluid content, particle size, and reaction temperature and time.
		The enhanced compressive strength zeolite compositions of embodiments of the present invention are useful as a replacement for hydraulic cement, such as where cement is to be set in a water environment.
		The compressive strength data indicates that wellbore treating fluids comprising zeolite and water, such as the settable spotting fluids illustrated in Example 1, develop compressive strengths when the amount of an activator, such as lime, is present in an amount greater than about 7% based on the weight of the zeolite.
	www.freepatentsonline.com /7048053.html (7098 words)

	Laminations for improved container compressive strength - Patent 5447270
		In another further preferred embodiment, the compressive strength of the container is substantially improved through the use of the strip or patch laminations because the laminations improve the transfer of compressive loads into the container panels.
		The mechanism of strength improvement by lamination was investigated in a series of tests using panels to simulate performance of corrugated board in a box.
		Compression strengths were no greater with 42 lb or 69 lb laminations.
	www.freepatentsonline.com /5447270.html (2001 words)

	Compressive Strength Of Concrete Blocks - Buildilng With Concrete Blocks - www.concretesealer.academysportinggoods.be (Site not responding. Last check: 2007-11-03)
		When the concrete was completely dry, the wooden molds were removed, leaving behind a solid mass of great strength, though rough in appearance, which was often covered afterward with stucco or even sheathed with marble revetment.
		Combining the compressive strength of concrete and the tensile strength of steel...
		Acceptance of the compressive strength of the concrete facing panels...
	www.concretesealer.academysportinggoods.be /buildilng-with-concrete-blocks/compressive-strength-of-concrete-blocks.html (142 words)

	Compressive Strength
		The compressive strength of a material that fails by shattering fracture can be defined within fairly narrow limits as an independent property.
		However, the compressive strength of materials that do not shatter in compression must be defined as the amount of Stress required to distort the material an arbitrary amount.
		Compressive strength is calculated by dividing the maximum load by the original cross-sectional area of a specimen in a compression test.
	www.instron.com /wa/resourcecenter/glossaryterm.aspx?ID=25 (95 words)

	[Study on fatigue toughness of dental materials. 1. Compressive strength on various luting cements and composite resin c
		In this study, we investigated compressive strength of various luting cements and composite resin cores in both dry and wet condition, and then influences of repeating load on compressive strength in wet condition of distilled water at 37 degrees C. As frequency of repeating load increased, compressive strength of all materials decreased.
		In the condition of no loading in both dry and wet condition, resin cement indicated the highest compressive strength of all cements examined and was followed by glass ionomer cement, zinc phosphate cement and polycarboxylate cement.
		After 10,000 cycles of loading in wet condition, resin cement indicated the highest compressive strength again and was followed by glass ionomer cement, polycarboxylate cement and zinc phosphate cement.
	www.galenicom.com /medline/article/2489748/au:Takagawa+T (280 words)

	USE OF MUNICIPAL WASTEWATER FOR PLAIN CEMENT CONCRETE CONSTRUCTIONS (Site not responding. Last check: 2007-11-03)
		It is used in special applications for early strength gain (design strength in one day); Ettringite cements are calcium sulphoaluminate cements that are specially formulated for particular uses, such as the stabilization of waste.
		· The increase in sulfate concentration is inversely proportional to the compressive strength of concrete.
		The compressive strength of sample cylinders/beams was checked basing on the age of 7 days, 21 days and 28 days (curing periods).
	ejeafche.uvigo.es /4(6)2005/003462005F.htm (1561 words)

	Mechanical Properties of Materials - Tensile, Compressive, Shear, Torsional and Yield Strength Defin (Site not responding. Last check: 2007-11-03)
		While data sheets often quote values for strength (e.g compressive strength), these values are purely uniaxial, and it should be noted that in real life several different stresses may be acting.
		Compressive strength is defined as the maximum compressive load a body can bear prior to failure, divided by its cross sectional area.
		Yield strength is defined as the stress at which a material changes from elastic deformation to plastic deformation.
	www.azom.com /Details.asp?ArticleID=3426 (392 words)

	compressive strength of aluminium alloy (compressive strength of alumiium alloy) information. (Site not responding. Last check: 2007-11-03)
		Effect of an axial compressive mean stress on the fatigue strength of aluminium alloy bar (plain and notched).
		Compressive behavior of age hardenable tetrahedral lattice truss.
		The compressive strength is the maximum compressive stress that a..
	www.translation-directory.com /c/compressive_strength_of_aluminium_alloy.html (197 words)

	Concrete Compressive Strength (Site not responding. Last check: 2007-11-03)
		The theoretical dielectric strength of a material is an intrinsic property of the bulk material and is not dependent on the configuration of the material or the electrodes with which the field is applied.
		The field strength at which breakdown occurs in a given case is dependent on the respective geometries of the dielectric (insulator) and the electrodes with which the electric field is applied, as well as the rate of increase at which the electric field is applied.
		Peace through strength is the doctrine that military strength is a primary or necessary component of peace.
	www.wwwtln.com /finance/51/concrete-compressive-strength.html (790 words)

	Untitled Document
		The test method consists of applying a compressive axial load to molded cylinders (or cores) at a rate which is within a prescribed range until failure occurs.
		The compressive strength of the specimen is calculated by dividing the maximum load attained during the test by the cross-sectional area of the specimen.
		Compression tests are made as soon as practicable after removal from moist storage.
	civilx.unm.edu /laboratories_ss/pcc/unconfined.html (665 words)

	Compressive vs. flexural strength - Troubleshooting Concrete Producer, The - Find Articles
		Tensile strength is the basis for its ability to resist bending, or its flexural strength.
		The relationship of compressive strength to tensile is given in terms of the modulus of rupture, a more direct measure of flexural strength, which can be found by raising the compressive strength to the 2/3 power and multiplying that by 2.3.
		For concrete with a compressive strength of 3000 psi, the corresponding calculated tensile strengths using these four approximations are 300, 367, 219, and 478 psi, respectively.
	www.findarticles.com /p/articles/mi_m0NSY/is_12_21/ai_111616523 (509 words)

	CTLGroup - Evaluation of Strength of
		To measure strength, the project specification allowed the use of compressive strength of field-molded cylinders in lieu of flexural strength of field-molded beams.
		Soon after paving began, the contractor evaluated concrete strength on the basis of compressive strength of field-molded cylinders.
		Because the two procedures for relating cylinder and core compressive strengths to flexural strength were in conflict, the MSHA retained an arbitrator to examine the concrete strength concern.
	www.ctlgroup.com /template_project.asp?topic=2245 (276 words)

	Compressive Strength Test (ASTM C 39)
		strength tests are used during concrete mix design to evaluate the performance of the materials and to establish mixture proportions that will give the required strength.
		"Compressive strength" is defined as the average of the strengths of all cylinders of the same age made from a sample taken from a single batch of concrete.
		Report the average compressive strength of all cylinders from the same concrete sample.
	www.tpub.com /inteng/13m.htm (468 words)

	CMUBasics - Strengths
		Compressive strength of an individual cmu is expressed in terms of gross or net psi.
		A minimum average gross compressive strength of 1000 gross psi was specified in older UBC and ASTM specifications.
		is approximately 80% of the cmu and grout strengths
	www.angelusblock.com /strength.cfm (550 words)

	Quality control and testing of high-strength concrete
		For concrete with a specified compressive strength greater than 10,000 psi (70 MPa), or at least 1,000 psi (7 MPa) higher than previously supplied, the guide recommends that the project specifications assign responsibility for quality control of the mix and its ingredients to the concrete supplier.
		It is not unusual to require that strengths be measured at seven and 28 days in addition to the specified age.
		Smaller test cylinders are acceptable provided the strength is determined in accordance with ASTM C 39 and the same size cylinder is used for both trial mixtures and acceptance testing.
	concreteproducts.com /mag/concrete_quality_control_testing/index.html (1129 words)

	The Effect of Mold Size and Mold Material on Compressive Strength Measurement Using Concrete Cylinders
		Cylinders were cured in the standard manner and tested for compressive strength, primarily at an age of 28 days.
		Differences in observed strengths due to type and size of mold were influenced by the type of concrete tested and the procedure for initial storage during the first 24 h of curing.
		Some of the differences in strength among the mold types was traced to differences in moisture loss during the first 24 h of storage.
	journalsip.astm.org /JOURNALS/CEMENT/PAGES/22.htm (412 words)

	Cement & Concrete Basics: High Strength Concrete \| Portland Cement Association (PCA)
		The primary difference between high-strength concrete and normal-strength concrete relates to the compressive strength that refers to the maximum resistance of a concrete sample to applied pressure.
		When selecting aggregates for high-strength concrete, producers consider the strength of the aggregate, the optimum size of the aggregate, the bond between the cement paste and the aggregate, and the surface characteristics of the aggregate.
		At 969 ft (295 m), Chicago's 311 South Wacker Drive uses concrete with compressive strengths up to 12,000 psi (41 MPa) and is the tallest concrete building in the United States.
	www.cement.org /basics/concreteproducts_histrength.asp (450 words)

	Cement Association of Canada - Compressive Strength
		Compressive strength may be defined as the measured maximum resistance of a concrete or mortar specimen to axial loading.
		The specified compressive strength is designated by the symbol f'c and ideally is exceeded by the actual compressive strength fc.
		Compressive strength of concrete is a primary physical property and one frequently used in design calculations for bridges, buildings, and other structures.
	www.cement.ca /cement.nsf/0/FD75CF9BC0FB1029852568A9005B0082?OpenDocument (305 words)

	Masonry in Practice: Verifying Compressive Strength \| Portland Cement Association (PCA)
		One is the unit strength method and the other is testing masonry prisms for compressive strength.
		The unit strength method verifies the compressive strength of the individual materials and then uses tables to determine compressive strength of the assembly from that information.
		They have one table for clay masonry and one for concrete masonry and each give the compressive strength of the assembly based on the strength of the unit and the type of mortar.
	www.cement.org /masonry/ds_compressive_strength.asp (498 words)

	Compressive Test ASTM D 695 ISO 604
		Compressive properties describe the behavior of a material when it is subjected to a compressive load.
		Compressive strength and modulus are the two most common values produced.
		Compressive strength and modulus are two useful calculations.
	www.ptli.com /testlopedia/tests/Compression-d695.asp (214 words)

	Very High Strength (Site not responding. Last check: 2007-11-03)
		Using readily available materials, the flexural strength of VHSC is approximately 10 times that of conventional strength portland concrete (CSPC) and its tensile strength is over twice that of CSPC.
		The compressive strength of VHSC is approximately 7 times that of conventional concre.
		By using select materials, the compressive strength can be increased an additional 40 percent and the flexural strength can be increased an additional 90 percent.
	www.wes.army.mil /SL/TREAT_ISL/Programs/VeryHighStrength22.html (294 words)

	strength testing instruments utilized to evaluate material compressive strength
		The second are tensile field tester systems to either determine the tensile strength of an overlay or bond material, or tensile strength of anchors embedded in the concrete.
		The first group is pure Non-Destructive Testing where the strength of the material is determined by correlation to another parameter more easily available and readily apparent.
		This is typically the hardness of the concrete or the resistance to penetration by either a pin or probe.
	www.ndtjames.com /catalog/strengthTesting/index.html (338 words)

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