Aci 301-05 pdf free download

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These cookies do not store any personal information. October 6, October 6, 0 Comments admin admin. This website uses cookies to improve your experience. We'll assume you're ok with this, but you can opt-out if you wish. Privacy Overview This website uses cookies to improve your experience while you navigate through the website. Add Another. Copyright Scribd Inc. Language: We've sent a link to the Scribd app. If you didn't receive it, try again.

English Text me Submit Query. We'll never share your phone number. Or, click here and we'll send an email to your iPad and Android tablet. We've sent you an email with the link to the Scribd app. Didn't receive it? Try again. Open navigation menu. Close suggestions Search Search. User Settings. Ron had a good point about the importance of the concrete temperature in contrast to the meaningless air temperature, which is easy to administer.

If you have the proper mix design, heated water, protected or heated aggregates and reasonable protection from the elements, the heat of hydration will over-rule the air temperature if the base the concrete is on is not too cold. If you are in a cold climate, heated mixes should be available from a good supplier. We even poured concrete at F from temporary plant with good aggregate storage. The volume was nothing, but the batching and delivery were critical.

Please ignore the first posting at Dick Engineer and international traveler interested in construction techniques, problems and proper design. So different from what we have to go through here.

ASTM C94 has a table for minimum concrete temperatures during cold weather concreting. Red Flag This Post Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Do not place concrete cement mortar—Acceptable repair materials other than site- until submitted plans for batching, mixing, placing, and mixed portland-cement mortar may be used for repair. Use curing have been accepted. Materials include, but are not limited to, 6. The type, grade, and class shall all individuals involved with this phase of the Work. Integrate this Work into the structure.

Prevent and coverings that will not stain the concrete. Show jointing of facing deflection of studs and walers to 0.

Surfaces produced shall require only minor 6. Where an as-cast finish is concrete shall match color and texture of surrounding surfaces. After initial set, dress surfaces of repairs manu- 6. The outer 1 in. In aggregate transfer finish, the patching mixture rated by recessed or emphasized joints, provide in the struc- shall contain the same selected colored aggregates. After tural design of the forms the locations of ties within the joints patches have been cured thoroughly, expose the aggregates so patches of tie holes will be in the recessed or emphasized together with the aggregates of adjoining surfaces by the joints, unless otherwise specified.

Thoroughly concrete surfaces for seven days. Protect patches from clean and properly coat forms before reuse. Do not use equipment for other concrete form liners of plastic, wood, or sheet metal. Secure liner panels construction during architectural concrete operations.

Do not permit impressions of nail heads, screw heads, or washers to be imparted to the 6. Seal edges of textured panels to each nated colors and uniformity of color, except when not other or to divider strips to prevent bleeding of cement paste. For a concrete mixture of Use a sealant that will not stain the concrete surface. Avoid changes in quantity of cemen- transfer and special finishes that duplicate the mockups or titious materials per unit volume of concrete.

Use only one sample panels that were prepared in advance and accepted. Provide a concrete surface tency. For architectural concrete with exterior exposure, use that will duplicate the mockups or sample panels that were air-entrained concrete with a water-cementitious material prepared in advance and accepted.

Air content shall comply with Table 4. Wet the concrete surface 6. Where a smooth- freely, until surface mortar is removed and aggregate is rubbed or similar finish is specified, work the coarse aggre- uniformly exposed.

Then rinse with clear water. If portions gate back from the forms by spading or form vibration, of the surface have become too hard to permit uniform leaving a full surface of mortar but avoiding surface voids. If deviations from desired to remove the excess surface mortar after the concrete has elevation, alignment, plumbness, or camber are observed, or if been in place at least 14 days. Remove the acid from the weakness develops and the falsework shows undue settlement finished surface with clean water within 15 min after appli- or distortion, stop work, remove the affected construction if it cation.

To facilitate aggregate exposure, cast concrete is unacceptably damaged, and strengthen the falsework. Do not pry against face of concrete. Use stainless steel or plastic reinforcement fied, the total area requiring repair shall not exceed 2 ft2 in supports and spacers near concrete surfaces to be blasted. This is in addition to tie-hole Protect adjacent materials and inserts during abrasive blasting patches, if Contract Documents permit ties to fall within as- operations.

Unless otherwise specified in the Contract Docu- cast areas. For other floors, slump of lightweight concrete surface with electric, air, or hand tools to a uniform concrete shall not exceed 4 in. Correlate equilib- cementitious coatings, or similar troweled materials are rium density with the fresh bulk density of concrete. Use the specified, prepare the surface of concrete to ensure perma- fresh bulk density as the basis for acceptance during nent adhesion of the finish.

When concrete is less than 24 h construction. Submit test results and correlation for review. When 7. After roughening, wash the surface for lightweight concrete in accordance with 4. Relate free of dust, acid, surface retarder, and other foreign material strength to cementitious materials content of the concrete. Lightweight by 4. Test aggregate for water absorption with the concrete shall comply with the requirements of Sections 1 minimum moisture content likely to occur on the project.

Predampening may be used to achieve this condition. For pumped concrete, increase slump of concrete entering the pump to 7. Prewet lightweight aggregate in accordance with 7. For pumped concrete, prewetting conform to 4. Use 7. Determine the air appears at the surface. Select 7. When the fresh bulk density varies of 4. Do not use 8. Do not use steam requirements: or other curing methods that will add heat to the concrete.

Post-tensioned concrete shall comply with the following requirements: requirements in Sections 1 through 5 unless otherwise specified. These tolerances tendon locations shown on the Contract Documents are apply separately to both vertical and horizontal dimensions and proposed. Calibrations shall be 9. Store cement and demonstrating compliance with 9. Only 9. Contract Documents and shall conform to one of the 9.

Tendons shall be fabricated in Post Tensioning Institute 9. Include in the scale, oil, dirt, and pitting. A light coating of rust is permissible. For unbonded tendons, test a third sample in accor- coating materials during concrete placement.

Test tendon assembly with a method that shape and resist damage during construction, and shall will allow accurate determination of yield strength, breaking prevent the intrusion of water from the cement paste. Duct- strength, and elongation of the specimen to ensure compli- forming material left in place shall not directly or indirectly ance with 9.

Ducts shall be 9. Systems using multiple strands, wires, or bars area of the prestressed reinforcement. Provide drain holes at 9. The bearing plate portation, storage at project site, installation, and concrete or anchorage shall be perpendicular within plus or minus 1 placement. The sheathing shall be continuous over the degree to the direction of the tendon at the anchorage. Other anchorages to provide full encapsulation of the prestressing admixtures may be used, provided acceptable tests or perfor- steel in accordance with ACI The actual 9.

Water content shall be the actual breaking strength of the tendon. Provide the required minimum necessary for proper placement, and the water- bond length between the anchorage and the zone where the full cementitious material ratio shall not exceed 0.

Pass the grout through the No. Total elongation of the tendon culation. Continue pumping as long as the grout retains the over a minimum gauge length of 10 ft. Discard grout that has partially set.

All couplers 9. Comply with 9. A light coat of rust on the prestressed 9. Fly ash or other 9. The of 9. The maximum water-soluble chloride ion coating may be shop or field-applied, and can be plastic, concentration in the hardened grout shall be in accordance epoxy, or other acceptable material. Before placing Anchor tendon supports to the formwork to maintain the concrete, examine the duct and grout fittings for holes, and tendon profile during concrete placement.

If the tendon remains ungrouted for 9. When a 9. Firmly support tric ground currents. Do not conduct burning and welding oper- tendons to prevent displacement during concrete placement. Continue injection until grout of the same procedure is contrary to the recommendations of the consistency as the grout injected flows from vent and drain prestressed reinforcement or anchorage manufacturer. Close vent and drain openings progressively in the direction of the flow.

Shrinkage-compensating concrete tendons composed of multiple strands in a common duct shall comply with the requirements of Sections 1 through 5 simultaneously unless the tendon is designed for the strands unless otherwise specified in this section.

Calibrate the gauge or dynamometer within six The pressure gauge shall have gradua- accordance with ASTM C for the concrete mixture tions no larger than psi. Apply the jacking force required proportions. Documents or Installation Drawings and measure the tendon elongation. Verify that the prestressing force is adequate by If the measured elongations differ from the calcu- Do not remove stressing tails, grout ducts, ash or ground-granulated blast-furnace slag.

The concrete ments shall permit the previous placements to have two adja- shall then be mixed for an additional 2 min.

Record the expan- 72 h. Submit test results shrinkage-compensating concrete for a minimum of seven along with the revised mixture proportions. This Foreword is included for explanatory purposes ACI Responsibilities for project participants must be defined in the Project Specification.

ACI Specification may stipulate requirements more restrictive than the minimum. Compaction Characteristics of Soil Using F6. These references provide guidance to the Speci- fier and are not considered to be part of ACI Specification Jackson Blvd Ste. Concrete mixtures 4.

Additional information on the effects of chlorides on corrosion of reinforcing steel is given in ACI An initial evaluation can be obtained by testing individual concrete ingredients for total chloride content. If total chloride-ion content, calculated on the basis of concrete proportions, exceeds that permitted in Table 4.

Some of the total chloride ions present in the ingredients will either be insoluble or will react with the cement during hydration and become insoluble under the test procedure described. When concrete is tested for water-soluble chloride-ion content, the tests should be made at an age of 28 to 42 days. The limits in Table 4. Be the first to review this item Amazon Best Sellers Rank: The engineer on our current project did not specify a minimum concrete temperature, the spec says to place concrete in accordance with ACI Defense manufacturing is all about project manufacturing and project accounting.

Thank you for helping keep Eng-Tips Forums free from inappropriate posts. ACI for Structural Concrete is a reference specification that an architect or engineer can apply to any construction project involving structural concrete by citing it in the project specifications.

Shopbop Designer Fashion Brands. For more information, contact: Minimum Concrete Temperature So different from what we have to go through here. Posting Guidelines Promoting, selling, recruiting, coursework and thesis axi is forbidden. It is usually in the form of air temperature.