초록 ▼

Improved polymer bonded concrete is disclosed wherein the amount of polymer binder used may be reduced to amounts as low as 3 to 10% by weight of the concrete. The concrete has however high strength and other improved properties such as high modulus of elasticity, low thermal expansion and contracti

Improved polymer bonded concrete is disclosed wherein the amount of polymer binder used may be reduced to amounts as low as 3 to 10% by weight of the concrete. The concrete has however high strength and other improved properties such as high modulus of elasticity, low thermal expansion and contraction, better fire resistance, low shrinkage on curing and the like and also very importantly, the cost is reduced. Preparation of the concrete is disclosed using an in situ polymerization process together with intense vibration of the monomer component-solids mix.

대표청구항 ▼

A process for preparation of a polymer bonded concrete of less than 10% by weight organic binder which comprises (1) mixing an aggregate containing sand, stone or gravel or mixtures thereof with, as binder components, (a) at least one material selected from the group of ababab1-18 alkyl esters of ac

A process for preparation of a polymer bonded concrete of less than 10% by weight organic binder which comprises (1) mixing an aggregate containing sand, stone or gravel or mixtures thereof with, as binder components, (a) at least one material selected from the group of ababab1-18 alkyl esters of acrylic acid, C1-8 alkyl esters of methacrylic acid, divinyl benzene, and mixtures thereof; and (b) a free radical polymerication initiator, to form a mixture of aggregate with binder components; (2) casting the mixture; (3) subjecting the mixture to intense vibration, wherein the vibration is sufficiently intense to cause segregation of aggregate from binder and to cause a layer of excess liquid binder to form on the upper surface of the cast mixture, and (4) allowing the monomers to polymerize and set to produce the polymer bonded concrete.