Maintenance & Repair of Highways

Maintenance & Repair of Highways

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 edition. Excerpt: ...Patch on page 88. This method or repairing a brick road is used only in making temporary repairs, as would be the case where the brick pavement is not in good enough condition to warrant making a first-class patch as described in (a) or (b). (3) Failure Due to Concentrated Temperature Stresses. Where a rigid pavement is defective in such a way as to cause the enormous pressure due to expansion from heat to be concentrated upon a reduced portion, perhaps a very small portion, of its cross_sectional area, there is likely to result a destruction of the pavement. As soon as the pressure exceeds the crushing strength of the cross section of pavement, failure results. This may take place in the form of a quiet crushing of the pavement, or in a "blow up" wherein the pavement is thrown up by the force, as in an explosion. The failure of brick pavements at expansion joints and much of the spalling off of a concrete pavement near joints, is due to the concentrated resSures on small areas of the pavement. The failure of small areas in a brick pavement due perhaps to defective foundations may concentrate the longitudinal pressure on the remaining portion of the pavement to such an extent as to cause it to fail by crushing. Hence is seen the necessity of repairing small areas as soon as possible after they have failed. The improper filling of joints in a brick pavement, wherein only a part of the joint is filled with grout, is a very common source of failure of such pavements.. Variable temperatures produce corresponding variable volumes in different substances. The expansive forces due to the increase in volume may be very great; it is therefore necessary in repairing or designing rigid pavements, to take into account these more

Product details

  • Paperback | 54 pages
  • 189 x 246 x 3mm | 113g
  • United States
  • English
  • black & white illustrations
  • 1236854179
  • 9781236854179