TY - JOUR
TI - Strengthening method of effectiveness evaluation of reinforced concrete with external unbonded steel tendons
AU - Seruga, Andrzej
AU - Zych, Mariusz
AU - Faustmann, Dariusz
TI - Strengthening method of effectiveness evaluation of reinforced concrete with external unbonded steel tendons
AB - 
	Nowadays reinforced concrete bending elements are strengthened most often using post-tensioning technology with unbonded steel tendons or CFRP materials. Type of material used to strengthen of the building structure is selected based on the real conditions of structure exploitation as well as structural solution, accessibility to element and anticipated strengthening effectiveness. Values of post-tensioning forces are known based on measured jack pressure, concrete strains in selected cross sections and girder deflection. In case of strengthening the cracked elements, the cracks should be injected with epoxy resin before start to strengthen. The method of injection should be suitable to values of crack widths. In case of many cracks, some of them (small cracks) are unfilled. It can be supposed their presence have influence for strengthening effectiveness evaluation of reinforced concrete elements.
VL - 2012
IS - Budownictwo Zeszyt 4-B (21) 2012
PY - 2012
SN - 0011-4561
C1 - 2353-737X
SP - 1
EP - 1
DO - 10.4467/2353737XCT.14.078.1855
UR - https://ejournals.eu/czasopismo/czasopismo-techniczne/artykul/strengthening-method-of-effectiveness-evaluation-of-reinforced-concrete-with-external-unbonded-steel-tendons
KW - prestressing structures
KW - reinforced concrete structures
KW - unbonded tendons
KW - reinforced concrete girder
KW - structure strengthening by prestressing