The sample should be representative of the concrete supplied. These quality tests on concrete give an idea about the. A final report was prepared to summarize the laboratory results, the service life simulations, the conclusions, and the recommendations. Method of tests for strength of concrete iit kanpur. Compressive strength of concrete cube test provides an idea about all the. The action of changing mixed cement from a fluid state to a solid state is called setting of cement.
Tests on concrete concrete slump test, compression test for. What are different tests for concrete quality check. Aci 30110 also makes it clear that when it appears that material furnished or work performed by contractor fails to conform to contract documents, the testing agency will immediately report such deficiency to architectengineer, owner, contractor, and concrete supplier. Concrete tests include slump, air content, temperature, yield, unit weight, watercement ratio, in addition to the casting of concrete cylindersbeams for. The strength is measured in megapascals mpa and is commonly specified as a characteristic strength of concrete measured at 28 days after. Concrete testing services has been established as an extension of these facilities. Prior to strength testing, the upv of the concrete was determined. Concrete structural assessment report examples united. Concrete mix design a nd trail mixes execution tr no.
Compressive strength of concrete cube test, procedure, results. Enclosed is your copy of the final report on the test results for the ccrl. Air tests determine the total content of entrained. Compressive testing machine ctm is the most basic machine used for testing of concrete cubes in the construction industry. Introduction nondestructive testing ndt is a wide group of analysis techniques used in science and industry to evaluate the properties of a material, component or system without causing damage. Inspect all materials used in the construction of concrete. Concrete basics a guide to concrete practice contents foreword page 2 chapter 1 concrete materials pages 35 chapter 2 concrete properties pages 69 chapter 3 concrete testing pages 10 chapter 4 ordering concrete page 14 chapter 5 proportioning and mixing concrete pages 1516 chapter 6 planning and site preparation pages 1719. The samples were pulverized using a vibratory micromill. This form is the same as 1793 a except that it also has a section to calculate random testing locations and offsets.
Upon request one of the companys field testing officers will go to the job site, measure the slump of the concrete, cast cylinders for either compressive or indirect tensile brazil test strength, or cast beams for flexural. General information is provided for those faced with the task of evaluating the condition of a concrete. Methods for production of highstrength concrete pdf. Samples are taken during production and required tests are then carried out on the samples. The report is being made on the experience of 3 weeks office training. If the concrete is placed in the work, report both tests on the weekly concrete report form 2448 with a notation of the amount of water, cement or airentraining admixture added. The number of revolutions at mixing speed shall not exceed 150 per specification 2461. Based on these syllabi, training course notes have been produced to cover industrial. It is intended to be a supplement to reading the astm as well as a study tool for the aci exam. For concrete paving projects only, send copies of all agency and contractor tests results including control charts.
Tip 11 testing concrete cores the strength of cores is used to verify the quality and strength of concrete in structures. According to wikipedia, compressive strength of concrete is defined as the characteristic strength of 150mm size concrete cubes tested at 28 days. As tested, the units met the minimum compressive strength requirement for concrete masonry units according to astm c 90, standard specification for loadbearing concrete masonry units ref. Concrete mixing and testing lab report free download as word doc. It cannot be determined directly in a time frame that would be useful as a quality control measure. Waste water basin non destructive testing report pdf 2. It can be used for all types and sizes of projects but should be supplemented with additional inspection requirements when the complexity of the project. Onsite concrete testing and inspection inspection of the placement of concrete and testing the fresh properties of concrete to verify conformance to the project plans and specifications. Report on nondestructive test methods for evaluation of. Upon request one of the companys field testing officers will go to the job site, measure the slump of the concrete, cast cylinders for either compressive or indirect tensile brazil test strength, or cast beams for flexural strength, etc.
The compressive strength is measured by breaking cylindrical concrete specimens in a compressiontesting machine. Smart crushing of concrete and activation of liberated. Astm c42c42m is the standard test method for obtaining and testing the strength of drilled cores and sawed beams of concrete. F3272 houston, tx 77043 11555 clay road suite 100 92091059. It delivers client submittal and inhouse tracking reports and lets you print lists of all specimens to be broken on a given day. This form is an option for use inlieu of the standard 1793 a form. Ctm measures and displays the compressive load on the concrete produced in kn to find the strength for the construction. Sampling the first step is to take a test sample from the large batch of concrete. The compressive strength is measured by breaking cylindrical concrete specimens in a compression testing machine. The results are applicable only to the specific concrete sample tested and may not be indicative of the strength or. The ability of chloride ions to penetrate the concrete must then be known for design as well as quality control purposes. Mix the concrete at agitating speed for all revolutions over 150.
This guide will teach you how to test air content of concrete with a type b pressure meter. Concrete mixing and testing lab report youngs modulus. This report provides technical information on pervious concretes application, design methods, materials, properties, mixture proportioning, construction methods, testing, and inspection. Structural tests of concrete compositecrosslaminated. This report concludes with a discussion of planning a ndt program. Initial setting time is defined as the period elapsing between the time when water is added to the cement and the time at which the needle of 1 mm square section fails to pierce the test block to a. Some specifications still take this tolerance approach, even though there. The penetration of the concrete by chloride ions, however, is a slow process. The measured slump must be within a set range, or tolerance, from the target slump. Different quality tests on concrete such as compressive strength tests, slump tests, permeability tests etc. Testing chloride penetration resistance of concrete. The geosystem quality control concrete qc concrete program maintains strength and property testing data on cement products, including concrete cylinders and beams, and mortar and grout cubes. Structural concrete properties and practice postgraduate course.
The advantages and imitations of the methods are highlighted. Concrete and aggregate testing construction sgs netherlands. Nominal maximum size the smallest sieve opening through which the entire amount of the aggregate is permitted to pass. Structural concrete the process of testing fresh concrete in the field begins with the procedures for obtaining and preparing the sample of concrete to be tested. Two specimens were tested and the results averaged for each strength test at each age. Sampling of fresh concrete and slump testing on site. The results of these tests were analyzed to determine the relationship among flexural. Weekly certified readymix plant report form 24143 3. It covers the reasons you are performing this test, the equipment needed, and the procedure of astm c231. Cores can also be extracted from concrete pavements and structures to verify compliance. Lab 1 concrete proportioning, mixing, and testing supplemental lab manual prepared by mutlu ozer objectives concepts background experimental procedure report requirements discussion objectives students make concrete according to the mix design. Tools standard slump cone 100 mm top diameter x 200. Results of the laboratory and field investigations were used to predict future performance of the concrete. Report on compressive strength of concrete cubes customer contractor consultant froject name location.
A full report of the unit testing results is provided in appendix a. If the concrete is placed in the work, report both tests on the weekly concrete report form 2448 with a notation of the amount of water, cement. The forms can accommodate two different formats, metric and english. Specification for moulds for use in tests of cement and concrete.
Nd t 152 air content of freshly mixed concrete by the pressure method. Nd t 166 bulk specific gravity of compacted asphalt mixtures using saturated. Quality tests on concrete are performed as a part of quality control of concrete structures. Gsp 17 gives the standardized procedures for obtaining a representative sample of a batch of concrete, from mixing andor agitating equipment. Nuclear compaction test report for acp with randoms. Most commonly, cores are extracted when there is a reported low strength test result of standard cured cylinders. Best practice guidelines for concrete placement planning, field testing, and sample collection page 1 september 2014 1 executive summary concrete is the most widely used construction material and can be used in almost any environment for a multitude of applications but successful concrete construction begins with careful planning. Experimental test procedures to determine the compressive strength, shrinkage and heat of hydration of the trial mixes were conducted.
Peter craig and george donnelly, moisture testing on concrete slabs, when 3lbs is not 3lbs, concrete international, september, 2006. Cheek the floor flatness report what the designer needs to know floor profile finish quality has traditionally been specified by limiting the gap under either an unleveled or leveled 10 ft 3 m straightedge. Tests on concrete concrete slump test, compression test. Cores are extracted from hardened inplace concrete primarily to measure inplace concrete strength. Maximum size of aggregate the smallest sieve opening through which the entire amount of aggregate is required to pass. Slump and kelly ball testing would be performed to investigate workability of mixture. Complete calculation of concrete mix design is included with solved numerical equations. The term pervious concrete typically describes a nearzeroslump, opengraded material consisting of portland cement, coarse aggregate, little or no. The ctm, however, has been observed to display false readings at times.
Research scientist introduction a drilled shaft is a deep foundation that is constructed by placing fresh concrete in a drilled hole michael and lymon, 1999. Compressive strength of concrete cube test pdf, procedure. Making and curing test specimens on your site and in our laboratory. Measurement of air content in concrete by pressure air method 3. Through the present report, the considered rebound hammer device is the standard. Guidebook on nondestructive testing of concrete structures. Nd t 248 and aashto t 248, reducing samples of aggregate to testing size. The mixture was done by hand for about 20 minutes using a shovel and wheelbarrow. Starnet, starlog, the cure for concrete moisture and ph ills, volume vii issue 2. Report theiollowmg mformanon shall be included in the report on each test. The results are applicable only to the specific concrete sample tested and may not be indicative of the strength. This report was initiated by a concrete laboratory report brief given out by professor mark alexander in the civ5002z. Nondestructive testing ndt seminar pdf report download. Assessment of concrete strength in existing structures using.
We can also use 200mm cube, but you have to convert the compressive strength of 200mm cube to the equivalent of 150mm cube to. The geosystem quality control concrete qcconcrete program maintains strength and property testing data on cement products, including concrete cylinders and beams, and mortar and grout cubes. Inspect all materials used in the construction of concrete work at their source, on the job, or both. Report on preparation of concrete mix, and testing of cubes and prisms using destructive compression and nondestructive test pundit, erudite. This section includes a sample of each of the odot forms used for submitting samples and reporting test results. This gravity framing system includes composite masstimber floor panels, reinforced concrete spandrels, and reinforced concrete joints that serve to connect the vertical masstimber elements. Structural tests of concrete compositecrosslaminated timber. Testing procedures are summarized and the data analysis methods explained. Lane senior research scientist introduction for rigid pavements, the virginia department of transportations vdot 1993 road and bridge specifications vdot 1993 specified that the concrete have a 28day compressive strength of 20. Make all certified source mill test reports available for study by mndot personnel for at least 3 years after testing of the cement represented is. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design. The tensile testing laboratory was conducted using an instron load frame and the bluehill data acquisition software.
Matt huseman 1212 asbury houston, tx 77007 76908989 reg no. We can also use 200mm cube, but you have to convert the compressive strength of 200mm cube to the equivalent of 150mm cube to know the actual strength of the concrete. Reducing samples of aggregate to testing size nd t 255 and. Efforts to produce frostresistant concrete have primarily focused on providing a proper system of entrained air voids. The samples were cylindrical in cross section, with a reduced gage. Oct 02, 2015 the report is being made on the experience of 3 weeks office training. At the top of the form is an area that allows the user to switch between the different units. The only work done onsite is to make a concrete cylinder for the compression test. Root cause analysis of failures in the testing of concrete. The slump test the slump test is done to make sure a concrete mix is workable. This should be done as soon as discharge of the concrete commences. Guide for concrete plant inspection and testing of readymixed concrete aci 311.
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