Polymer absorption by lightweight concretes to improve bonding between cement and aggregate and to increase strength of cement is discussed. Compressive strength of treated cement is compared with strength of untreated product. Process for producing polymers is described

Auskern, A.

English

NASA Technical Reports Server

July 1972
	
B72-10430 
AEC-NASA TECH BRIEF  
AEC-NASA Tech Briefs announce new technology derived from the research and development program of the U.S. 
AEC or from AEC-NASA interagency efforts. They are issued to encourage commercial application. Tech Briefs are 
available on a subscription basis from the National Technical Information Service, Springfield, Virginia 22151. Requests 
for individual copies or questions relating to the Tech Brief program may be directed to the Technology Utilization 
Office, NASA, Code KT, Washington, D.C. 20546. 
Strengthening Lightweight Concrete 
Polymer impregnation substantially strengthens 
lightweight concretes. Vacuum soaking followed by 
radiation polymerization using a Co 60
 gamma source 
impregnates perlite concrete, foamed glass concrete, and 
mearicrete with polymethyl methacrylate. This process 
improves the bond between the cement and aggregate 
and strengthens the cement phase. 
With this process the concretes absorb polymer 
ranging from 31 percent (by volume) for foamed glass 
concrete to 49 percent for perlite concrete. Com-
pressive strength of unimpregnated samples, generally, is 
less than 1000 psi. Compressive strength of most impreg-
nated samples varies from 3000 to 6000 psi. Adding 15 
percent polymer to concrete having an unimpregnated 
strength of 5000 psi increases its strength to the 18,000 
to 20,000 psi range: 
The lightweight concretes strengthened by the 
polymer impregnation process should be a useful devel-
opment for the construction industry.
Note:
Requests for further information may be directed 
to:
Mr. Glenn K. Ellis 
Technology Utilization Officer 
Office of Information Services 
U.S. Atomic Energy Commission 
Washington, D.C. 20545 
Reference: TSP72-1 0430 
Patent status: 
Inquiries concerning rights for commercial use of 
this information may be made to: 
Mr. George H. Lee, Chief 
Chicago Patent Group 
U.S. Atomic Energy Commission 
Chicago Operations Office 
9800 South Cass Avenue 
Argonne, Illinois 60439 
Source: Allen Auskem
Brookhaven National Laboratory

under contract to

Atomic Energy Commission

(AEC-10017) 
Category 04 
This document was prepared under the sponsorship of the Atomic 	 liability resulting from the use of the information contained in this 
Energy Commission and/or the National Aeronautics and Space document, or warrants that the use of any information, apparatus, 
Administration. Neither the United States Government nor any per- 	 method, or process disclosed in this document may not infringe pri-
son acting on behalf of the United States Government assumes any vately owned rights.
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Strengthening lightweight concrete

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