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I am using 8-inch, 3-core concrete blocks in the construction of residences and some stores. How can I avoid cold, damp walls (sweating walls)?
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I have a job requiring heavyweight shielding concrete. How do I get this type of concrete?
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We have been experiencing a considerable amount of surface cracking. How can this be prevented?
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How does one go about repairing a badly worn and pitted concrete floor?
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Can you suggest how to correct a severe dusting condition on a factory floor?
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If specifications call for a 1:2 cement-sand floor topping, would you suggest using a mix containing coarse aggregate?
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Of what value are yield charts?
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In your first installment of "Elements in Good Floor Construction" in the March 1969 issue, it is stated that "the topping should have no structural function" in Class 6 floors. Why should this statement be applicable to toppings installed monolithically or integrally with the base concrete slab or...
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It is indicated in your publication that most floor construction is improved by including a vapor barrier. There are a number of experiences in our area that indicate the use of a vapor barrier may not be advisable. The water in a concrete slab placed on
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We would like to know what the formulation of concrete fills placed over structural slabs should be so that the installation of thin-set floor coverings such as epoxy, neoprene, acrylic, etc. will be crack-free.
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Would you discuss the solution to the problem of crack control by suitable spacing of control joints or sawed joints in the slab, particularly when the slab is assumed to provide bending resistance to the longitudinal girders spanning between columns and also cross beams spanning between...
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In an article on acid etch, reference was made to combining sawdust with a mixture of hydrochloric acid and water. I would like to know a recommended method of mixing the hydrochloric acid-water with the cement. Would it be advisable to mix it in a small
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I poured a concrete drive, dusted and floated in black Colorundum, and sprayed with "60 D" curing compound. There were about five pours involved to complete the driveway. Some pours were rained on during the night after the pouring. In varying degrees, white powdery material formed on the black...
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I have a particular problem with a damp basement in a new home. The floor seems to change color and darken in the center of the room and toward the walls.
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What does the term "water of convenience" mean?
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Does embedding copper in concrete present problems?
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What are the advantages of using steel pipe as permanent formwork for building columns?
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I would like some information on paving concrete outside (driveway) with the concrete being heated in winter. Heating will be done with hot water. The concrete will be 12 by 50 feet. What pound concrete should I use and what thickness. Should I put wire in for reinforcement?
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Please tell me how to correctly prepare and apply a concrete topping. We recently placed a slab, and then topped it with a mixture of 1 part cement and 3 parts sand. The slab was given a broom finish before the topping was applied. We did not use a bonding agent between the slab and the topping...
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I have been placing quite a few concrete floors that are scored in 32-inch squares. The finish on these floors is hand troweled. When completely cured, the floor is either acid stained and waxed or simply waxed. I usually use a black wax. My problem is this: I am getting larger size work to finish...